Subscriber access provided by UNIV OF SCIENCES PHILADELPHIA
Positive Aspects of Cane Sugar and Sugarcane Derived Products in Food and Nutrition Gillian Eggleston J. Agric. Food Chem., Just Accepted Manuscript • DOI: 10.1021/acs.jafc.7b05734 • Publication Date (Web): 10 Mar 2018 Downloaded from http://pubs.acs.org on March 11, 2018
Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts.
is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Published by American Chemical Society. Copyright © American Chemical Society. However, no copyright claim is made to original U.S. Government works, or works produced by employees of any Commonwealth realm Crown government in the course of their duties.
Page 1 of 22
Journal of Agricultural and Food Chemistry
1
Positive Aspects of Cane Sugar and Sugarcane Derived Products in Food and
2
Nutrition
3 4
Gillian Eggleston
5 6 7
USDA-ARS-Southern Regional Research Center
8
1100 Robert E. Lee Boulevard
9
New Orleans, LA 70124, United States
10
[email protected] 11
Tel: 504-286-4446
12 13 14
15
16
17
18
19
20
1 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
21
ABSTRACT: Recently, like previously for fat and protein, there has been negative discussion
22
about carbohydrate, including blaming it for the rise of obesity and related metabolic conditions,
23
even though overconsumption and sedentary lifestyles are more defined contributors. In many
24
parts of the world, natural sugar (sucrose) from sugarcane is the main dietary source of
25
carbohydrate. Considerable misinformation about sugar is in the public domain with the average
26
consumer being unaware of (i) the critical need of body cells, particularly brain cells, for sugar to
27
function, (ii) the multitude of functionalities other than sweetening that sugar imparts, and (iii)
28
micronutrients delivered with many sugar products.
29
KEYWORDS: sugarcane; commercial sugars; nutrition; phenolics; specialty cane products
30
31
32
33
34
35
36
37
38
39
40
2 ACS Paragon Plus Environment
Page 2 of 22
Page 3 of 22
41
Journal of Agricultural and Food Chemistry
INTRODUCTION
42
In recent years, like for the dietary macronutrients fat and protein, there has been a lot of
43
negative attention to the other macronutrient carbohydrate (more specifically sugar or sucrose),
44
including blaming it for the rise of obesity and related metabolic conditions, even though
45
consuming excess calories from all sources and sedentary lifestyles are more defined
46
contributors.1
47
Academy of Sciences is 130 g/day for adults and children based on the average minimum amount
48
of glucose utilized by the brain (the only true carbohydrate-dependent organ).1 A person is at risk
49
of gaining weight when the energy (Calories) digested is greater than the energy used to perform
50
normal bodily functions. Anthony2 stated that “it takes overeating to get fat on carbohydrates,
51
because the first store of metabolized glucose is as glycogen in muscle cells, not fat in fat cells.”
52
Furthermore, there are many other different risk factors for obesity, including gut (microflora)
53
health, environmental factors, sleep patterns, stress, and genetics.3 Plainly speaking “everything
54
in moderation” equally applies to fats, proteins, and sugar, and when one or a combination of
55
these macronutrients is consistently overconsumed then obesity and related problems occur.
The recommended dietary allowance for carbohydrate set by the National
56
The negative focus on dietary sugar has mostly been on high fructose corn syrup (HFCS),
57
which is enzymatically produced from corn starch and, to a lesser extent, refined sugar which is
58
natural sucrose (α-D-glucopyranosyl-1↔2-β-D-fructofuranoside) extracted commercially from
59
either sugarcane (Saccharum officinarum) stalks or sugar beet (Beta vulgaris) tuberous roots.
60
After HFCS introduction into the U.S.A. in the 1970s, its utilization (75 to 80% was in beverages
61
and soft drinks) peaked in 1999 and has declined thereafter, with the decline being consumer
62
rather than price driven4 (Note: HFCS is typically less expensive than refined sugar but this
63
depends on the supply and demand of raw materials). In the past 8 years this has led to many
3 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
64
large beverage manufacturers replacing HFCS with “natural” sweeteners such as cane sugar.4 It
65
is of interest to note that although HFCS intake has been on the decline since 1999, obesity and
66
type 2 diabetes continue to rise, which indicates that HFCS is not the direct culprit.2
67
Nevertheless, with the new food labeling in the U.S.A. (implementation has been delayed)
68
having to include “added sugars”, there has been a push to get people to think more seriously
69
about how much sugar they consume.5 Unfortunately, the typical consumer does not understand
70
the label “added sugars” because they are not sure if it is good for their health.6 This is further
71
compounded by “added sugar” not being different from the natural sugar content in many foods,
72
making it impossible to detect or distinguish it.6 Many consumers are also unaware that even
73
though a product is marketed and sold as “low or zero sugar” it can still be packed with
74
carbohydrates. For example, apple pie with no added sugar still has pastry that contains a great
75
amount of starch which breaks down into glucose in the human digestive system.
76
The world production of sugar in 2016/17 was 179.2 million tonnes (raw value) and 78.1%
77
of this was from non-GMO sugarcane.7 Moreover, the total production and consumption of
78
world sugar has risen dramatically since 1971/72,4 and even in the past year consumption has
79
risen by 2.2%.7 Sugarcane is a giant grass grown in tropical or sub-tropical areas of the world.
80
Refined, white sugar from sugarcane has a very high purity (>99.9%) making it one of the purest
81
organic substances that is produced on the industrial scale. To obtain such a pure product,
82
complex isolation and purification processes are followed at both the sugarcane factory (end
83
product is raw sugar which is not considered food-grade in the U.S.A.) and then the cane refinery
84
(end product is refined white sugar), which are illustrated in Figure 1. For a full description of
85
sugarcane processing the reader is referred to another review.4 Although sugarcane is used
86
primarily as a source of refined sucrose, considerable quantities of less refined sugars are
4 ACS Paragon Plus Environment
Page 4 of 22
Page 5 of 22
Journal of Agricultural and Food Chemistry
87
consumed in less industrialized areas of the world, and there has recently been a huge growth for
88
“unrefined” and “natural” products from sugarcane in industrial areas, both of which will be
89
discussed in later sections of this paper. This perspective paper outlines the numerous positive
90
aspects of commercial cane sugars and other sugarcane derived products in food and nutrition.
91
DISCUSSION
92
The Multiple Roles of Sugar (Sucrose) in Foods. Although current consumers say they
93
would like to avoid added sugar and artificial sweeteners, and reduce total sugar consumption,
94
when sugar is reduced in foods more than just sweetness intensity changes.8 Flavor intensity is
95
also reduced, as well as mouthfeel, gelling, suspension, etc. Off-tastes, such as bitter and
96
metallic, are also increased because sucrose masks them, and harsh notes from acids, vitamins,
97
and minerals become more apparent.8 Thus sugar can make many health foods more palatable
98
and contributes to the consumption of important minerals, vitamins, and acids. Long lists of the
99
numerous functions or roles of sugar in foods and beverages are shown in Figure 2. These
100
functions are related to the physical and chemical properties of sucrose, particularly solubility,
101
viscosity, crystallinity, osmotic pressure, water activity, and humectancy.
102
Other factors also have to be taken into account when reducing sugars in foods by adding
103
substitutes, which include the following (not in order of importance): (i) sensory, (ii) stability,
104
(iii) regulatory status, (iv) natural or artificial, (v) availability, (vi) consumption thresholds, (vii)
105
soluble solids, (viii) crystallization, (ix) caloric value, and (x) cost.8 Thus, reducing total sugar in
106
foods is not only very complex but also very difficult, which explains why formulators are
107
having great challenges in replacing sucrose in foods and beverages,9-11 and why combinations of
108
ingredients are working better as a replacement than one specific ingredient.11 Additionally,
5 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
109
reformulating can mean that processing efficiency can be reduced causing overall costs of the
110
foodstuff to rise, and functionality may not be as consistent.10
111
Many consumers also fear artificial non-caloric sweeteners because of health concerns,12,13
112
and want to avoid artificial sweetener replacements such as aspartame, acesulfame potassium,
113
sucralose, cyclamate, and saccharin.10 These are synthetic sugar substitutes that are also known
114
as intense sweeteners because they are considerably sweeter than sucrose and even fructose.
115
Although artificial sweeteners may be helpful with weight and diabetes control they can
116
sometimes leave an unwanted after-taste, and many consumers believe they are unhealthy, e.g.,
117
saccharin was previously thought to cause cancer but there is no sound scientific evidence for
118
this and it is considered safe by FDA.14 Artificial sweeteners are required in only a fraction of
119
the sugar needed to impart the same sweetness but cannot substitute sugar in many recipes or
120
foodstuffs, because they provide no bulk or volume and do not replace other functions of sucrose
121
(Figure 2). Natural sugar replacers such as stevia and monk fruit have also been difficult to use in
122
formulations because they also bring flavor off-notes with sweetness which need to be masked.4
123
Composition of Cane Juice and Refined Sugar and Molasses. The composition of food-
124
grade white, refined sugar and molasses (blackstrap molasses) are listed in Table 1 and compared
125
to sugarcane juice. Juice not only contains sucrose, glucose and fructose but also small amounts
126
of protein, fat, polysaccharides, minerals, and vitamins, and lesser and greater amounts of these
127
micronutrients are found in refined sugar and molasses, respectively (Table 1). Although the
128
protein is relatively low in sugarcane it is a non-gluten protein.
129
Less-Refined Sugars and Specialty Sugars. Considerable quantities of less refined sugars
130
are consumed in lesser industrialized areas of the world and, recently there has been a huge
131
growth for “unrefined” and “natural” products from sugarcane in more developed areas of the
6 ACS Paragon Plus Environment
Page 6 of 22
Page 7 of 22
Journal of Agricultural and Food Chemistry
132
world.
In India, noncentrifugal sugars or crude sugar products, such as Jaggery or Gur,
133
Khandsari, and Cane Juice (beverage), are popular and represent as much as 29% of sugar
134
consumption in that country.15 Noncentrifugal sugar products are more simply produced than
135
conventional sugar products (Figure 1) and do not need to be transported over long distances.16
136
Jaggery is produced by simply boiling down the sugarcane juice to the point where it will
137
harden; a similar product is made in Latin America named Panela.
138
micronutrients are not removed during the processing of noncentrifugal sugars their nutritional
139
value is relatively high, and as such represents a very important food consumed by all sections of
140
society For example, Columbian noncentrifugal sugar contains the following nutrients (per 100
141
g): water, 12.3 g; carbohydrates, 86.0 g; inorganic minerals, 1.1 g; fat 0.1 g; protein, 0.5 g,
142
calcium, 80 mg; phosphate, 60 mg; iron 2.4 mg; thiamin, 0.02 mg; riboflavin, 0.07 mg; niacin,
143
0.3 mg, ascorbic acid, 0.3 mg; energy value, 1300 kJ/100 g.17 In Okinawa, Japan, elderly people
144
consume Kokutou, a noncentrifugal cane sugar, that has been reported to contribute to the above
145
average lifespans of women and men.18,19
Since many of the
146
In many developed countries, various Brown or soft sugars are produced at the cane refinery.
147
Brown sugars range in color from light to dark brown, have very small crystals, and high
148
moisture content (0.5 to 5.0%).4 They are produced mostly by two methods. (1) The most
149
common method is to coat a lesser quality refined sugar with a small amount of refiner’s syrup
150
or molasses to produce a consistent product. (2) The traditional method is to boil the brown
151
sugar from a low-purity liquor. A typical brown sugar composition is 85-90% sucrose, 2-5%
152
glucose and fructose, 2-5% moisture and 1-3% ash (inorganic minerals). Specialty sugars such
153
as Demerara, Barbados, Muscovado, and Turbinado are various grades of brown sugar and/or
154
raw sugar. Turbinado sugar is raw sugar that has been washed by centrifugation in the presence
7 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
155
of steam in order to remove some of the colored molasses coating the surface of the crystals,
156
resulting in a light golden sugar with large crystals and a mild cane taste.4
157
Currently world-wide there is a large growing market for Organic sugar, which is projected
158
to reach USD 1314 million by 2022.20 In Europe, the current demand for Organic sugar is so
159
high it exceeds the supplies of domestic beet sugar, so it is made of imported cane sugar.20
160
Organic sugar is a product from sugarcane grown without synthetic herbicides and pesticides,4
161
that can be lightly refined or almost pure white and, compared to refined sugar contains more
162
amino acids, minerals, vitamins, and antioxidants.20
163
popularity of Organic sugar are: (i) the increasing public awareness of the need for
164
environmental protection, and (ii) the nutritional benefits derived from renewable resources,
165
even though the cost of Organic sugar tends to be higher than conventional sugars. Rigorous
166
organic standards have to be followed during organic sugarcane cultivation as well as during
167
processing, and site inspections are common.
168
undertaken in a unit separate from conventional sugar processing and synthetic processing aids
169
such as clarification flocculants cannot be used, although lime is permitted. Organic sugar is
170
mostly used by ready to eat food manufacturers, for example, chocolate, confectionery, and
171
bakery products. Additionally, carbonated beverage manufacturers are also increasingly utilizing
172
organic sugar because of rising demand for organic beverages in developed countries.20
173
Two major reasons for the growing
Processing of organic sugarcane has to be
Natural Phytonutrients in Sugarcane Products.
Plant phenolic compounds including
174
flavonoids, have been recognized as important phytonutrients due to their physiological,
175
pharmacological, and health benefits.21 Such dietary benefits of phenols are linked to their strong
176
antioxidant and radical scavenging activity.21 Nutraceutical ingredients such as antioxidants
177
allow for health and wellness claims for a particular foodstuff.22 Phenolic compounds are
8 ACS Paragon Plus Environment
Page 8 of 22
Page 9 of 22
Journal of Agricultural and Food Chemistry
178
frequently found in fruits, vegetables, and cereals,21 but as shown in Table 2 they also occur in
179
relatively high amounts in commercial Cane Juices. Freshly squeezed cane juice has been sold
180
for many years in less industrialized countries, but more recently it has begun to be sold as a
181
bottled (pasteurized) beverage in the U.S.A. For example, Alma Grown Company in Louisiana,
182
U.S.A. is now selling Cane Juice mixers that are either unflavored (original) or flavored.
183
Moreover, such Cane Juices contain select protein, minerals, and vitamins (Table 1).
184
Extracted Cane Juice (typically the first extraction through a roller mill) contains a complex
185
mixture of polyphenolic and phenolic flavonoid compounds that are often colored but some are
186
non-colored.23 Almost one hundred phenolic and flavonoid compounds have been identified in
187
cane products.23,24 The major polyphenols in sugarcane are caffeic, chlorogenic, protocatechuic,
188
ferulic, and coumaric acids.23 The predominant flavonoids are tricin, naringenin, luteolin, and
189
apigenin23,24 which are dependent on the sugarcane variety.24
190
As shown in Table 2, the total phenolic content (TPC) of commercial Cane Juices is 418 to
191
728 mg/L with more in Cane Juices flavored with fruit juice extracts. Original (unflavored) Cane
192
Juices ranged from 418 to 567 mg/L TPC which is in the range for commercial apple, grapefruit,
193
orange, and pineapple juices. Blueberry and peach juices contain only slightly higher TPCs (729
194
to 741 mg/L) than original Cane Juices, but cranberry, red grape, and especially pomegranate
195
juices contain much higher amounts (up to 2882 mg/L) of phenolics (Table 2).
196
Except for white refined sugars, phenolic compounds are also contained in relatively high
197
amounts in various other commercial (conventional and specialty) products of sugarcane (Table
198
2). Such products include Cane Syrups, Blackstrap Molasses (refinery food-grade), as well as
199
Brown and Organic sugars. Koge et al.19 observed that natural phenolic compounds in
200
commercial cane products are related to their antioxidant and color properties. In particular,
9 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
201
Blackstrap Molasses, one of the final products of sugarcane refining that has been subjected to
202
numerous unit processes (see Figure 1 and Table 2), represents a very concentrated source of
203
valuable phenolic compounds.24 Blackstrap Molasses contains even more total phenolics than
204
pomegranate, cranberry, and red grape juices (Table 2).
205
molasses are for cattle feed, and the manufacture of some fermentation products including yeast,
206
citric acid, potable and fuel ethanol,4 but molasses value as a dietary nutrient may open up more
207
new markets in the future.
Currently, the main uses of cane
208
Results in Table 2 also indicated that the TPC of commercial Cane Syrups are lower than in
209
molasses. This can be attributed to less concentrating of phenolics occurs across processing for
210
syrup production compared to molasses production. Greater mixing of molasses with sugar also
211
mostly explains why darker brown sugars contained more phenolics than lighter brown sugars
212
(Table 2). Nevertheless, compared to other foodstuffs the Cane Juice and Cane Syrup still
213
contained more nutritional phenolic compounds. For example, HFCS, maple syrups, honeys,
214
agave, and corn syrups contain less TPC than cane syrups.25
215
Sugarcane and refined cane sugar also contains nutritional prebiotic oligosaccharides that are
216
non-digestible food ingredients which selectively stimulate the growth of advantageous bacteria
217
in the human colon. Specifically, these are fructooligosaccharides or the kestose series of
218
oligosaccharides, which are also found in at least 12% of vascular plant species. In sugarcane,
219
the major kestose oligosaccharides (trisaccharides) are 1-kestose (1F-O-β-frutosylsucrose), 6-
220
kestose (6F-O-β-frutosylsucrose), and neo-kestose (6G-O-β-frutosylsucrose), with 1-kestose
221
being the most abundant.26 Similar short-chain fructooligosaccharide mixtures albeit in much
222
higher concentrations are sold commercially as prebiotics, e.g., NeosugarTM and ActilightTM.
223
The world market for such products is several thousand tonnes,27 which is only expected to grow
10 ACS Paragon Plus Environment
Page 10 of 22
Page 11 of 22
Journal of Agricultural and Food Chemistry
224
due to the growing demand for health-orientated food. Kestose oligosaccharides occur in the
225
sugarcane stalk but are more concentrated in the top part of the stalk and particularly in the green
226
leaves.26
227
Sugarcane Extracts.
In the past two decades, like for other plants, there have been
228
numerous investigations on sugarcane extracts, including their physiological functions and use in
229
health foods. This has led to the commercialization and sale of Sugar Cane Extracts (SCE),
230
especially in Asia where markets for nutraceuticals are great.18 For example, Mitsui Sugar
231
Company in Japan, currently produce and sell a variety of SCE products for various target
232
markets.18,19 There are four main types of SCEs named, 1, 2, 3, and 4, in order of the discovery of
233
the SCE’s physiological effect.19 SCEs 1 and 4 are both prepared from cane juice, SCE 3 is
234
prepared from sugarcane bagasse (fibrous by-product at the factory; Figure 1), and SCE 2
235
consists of volatile compounds from sugarcane processing.19
236
SCEs have a myriad of useful functions which make them effective as ingredients in
237
functional foods, health foods, and functional animal feed. Moreover, they are safe natural
238
products and relatively inexpensive compared with other extracts because sugarcane is already a
239
mass-cultivated global crop.19 SCEs 1, 2, and 3 exhibit deodorizing effects. SCE2 is a useful
240
deodorant in the food and other industries, and SCEs 1 and 3 are useful deodorizers of food
241
products such as meat and fish. SCEs 1 and 2 can be used to improve the taste of a variety of
242
foods, with off-tastes and after-tastes being particularly improved or masked. SCEs, particularly
243
SCE 1, are also rich in antioxidants and have DPPH (1,2-diphenyl-2-picrylhydrazyl) free radical
244
scavenging activities much higher than values for apple extracts that are sold as a source of plant
245
polyphenols.19 SCEs also stimulate the immune response and promote resistance to viral and
246
bacterial infections.18
11 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
247
Another extracted cane product named MEGANOX™ antioxidant is currently being sold in
248
The Philippines by Forever Living Corp. MEGANOX™ is a refined cane molasses extract
249
produced from clarified sugarcane juice that is being sold as either a liquid (MEGANOX™L) or
250
dried powder (MEGANOX™).
251
Other Highly Nutritious Foodstuffs from Sugarcane. There is a little known natural
252
extract of sugarcane waxes named “policosanols” (PC) that is a mixture of long chain, aliphatic
253
alcohols, which can also be isolated from other plants.28 PC is used as a medicine to treat
254
peripheral artery disease by reducing total cholesterol and low density lipoprotein cholesterol
255
(LDL-C), and can be used like statin drugs.28 It has also been claimed to be a potent antioxidant
256
but studies are still needed to verify this. Another health product manufactured from sugarcane
257
wax is octacosanol, which has been reported to enhance physical endurance.29
258
An Australian Company (KFSU Pty) recently developed a new sugarcane flour branded
259
Kfibre™ in Queensland,30 which is produced from mashed cane stalks after the juice has been
260
removed. The leftover mash is dried and ground into a powdered fiber. Kfibre™ is marketed as
261
100% natural whole plant dietary fiber for the maintenance of digestive health. Specifically
262
Kfibre™: (i) is high in fiber, (ii) is low in Calories, (iii) has a low Glycemic Index (GI), (iv) is
263
gluten free, and (v) is allergen free. Kfibre™ can be used to substitute wheat flour in food
264
products for celiac patients or alternatively it can replace some of the flour in baked goods to
265
lower the GI and overall Calories while boosting dietary fiber content. The company has also
266
produced Fibacel™ a dietary fiber from sugarcane that has a better water retention property than
267
starch. Fibracel™ is already being supplied to food manufacturers in Asia.30
268
Future Needs. Since there is considerable misinformation about sugar in the public domain
269
with respect to nutrition and health, many consumers are confused. At the same time, consumers
12 ACS Paragon Plus Environment
Page 12 of 22
Page 13 of 22
Journal of Agricultural and Food Chemistry
270
are also unware of the numerous functions of sugar in foods and beverages as well as the array of
271
micronutrients many sugars deliver in foodstuffs that have health benefits. Thus, consumers
272
urgently need to be provided correct information about sugar as an ingredient in a way that is
273
easy to understand and which can contribute to informed decisions. Food technologists and
274
manufacturers also need to engage in a more meaningful dialogue with consumers about the
275
roles of sugar in foods, what “added sugars” really means, and the impact sugar has on health.
276 277
ABBREVIATIONS USED
278
HFCS
High fructose corn syrup
279
GMO
Genetically modified organisms
280
Aw
Water activity
281
USD
United States Dollars
282
TPC
Total phenolic content
283
SCE
Sugar Cane Extract
284
DPHH
1,2-diphenyl-2-picrylhydrazyl radical
285
LDL-C
Low density lipoprotein cholesterol
286
PC
Policosanols
287
GI
Glycemic Index
288
ACKNOWLEDGEMENTS
13 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
289
Mention of trade names or commercial products in this article is solely for the purpose of
290
providing specific information and does not imply recommendation or endorsement by the U.S.
291
Department of Agriculture. USDA is an equal opportunity provider and employer.
292
FUNDING None
293
REFERENCES
294
(1) Anon. Institute of Medicine. Dietary reference intake for energy, carbohydrates, fiber,
295
fat, protein and amino acids. National Academy of Sciences Panel, National Academies
296
Press, 2005, Washington, 1-1358.
297
(2) Anthony, M. Toxic sugar or tortured logic. Food Proc., 2013, April edn., p. WF-11.
298
(3) Anon.
Uncover the truth about sugar.
Canadian Sugar Institute, July, 2013.
299
http://sugar.ca/Nutritional-Information-Service/Health-professionals/Fact-and-Fiction-About-
300
Sugars-and-Health.aspx, 1-6.
301
(4) Eggleston, G.; Legendre, B. L.; Godshall, M. A. Sugars and other sweeteners. In
302
Handbook of Industrial Chemistry and Biotechnology, 2017, 13th edition, Springer, 933-978.
303
(5) Ritter, S. The bitter side of sugars. Chem. Eng. News, 2012, 44, July 16 edn., p. 44.
304
(6) Arnot, C. Sugar is sugar? Apparently not. Food. Proc., 2017, Oct. edn., 12.
305
(7) Anon. 2017d. Switch to ethanol could save the sugar market from collapse. F. O. Licht
306
Sugar and Sweetener Report, 149, 490-500.
307
(8) Nessinger, B. T. Sweetener strategies. Prepared Foods, 2017, June edn., 102-107.
308
(9) Fusaro, D. Sweeteners on stage. Food Proc., 2017, July edn., 45-46.
309
(10) Hartman, L. R. Ingredients under fire. Food Proc., 2016, Nov. edn., 39-43.
310
(11) Hartman, L. R. New Year, new formulations. Food Proc., 2017, Jan edn., 33-35.
311
(12) Caldeira, S.; Maragkoudakis, P. Sweet ingredients. New Food, 2012, 15, 49-52. 14 ACS Paragon Plus Environment
Page 14 of 22
Page 15 of 22
Journal of Agricultural and Food Chemistry
312
(13) Phillips, D. Hitting the beverage sweet spot. Food Proc., 2014, May edn., 45-51.
313
(14) Anon. 2017c. Artificial sweeteners and other sugar substitutes. Https://mayoclinic.org.
314
Accessed 10/30/2017.
315
(15) Sawhney, D. H. The Indian sugar industry. Zuckerind. 2002, 127, 186-194.
316
(16) Keysers, H., Shieweck, H., Delavier, H.J. Special crystal sugar products. In Sugar
317
Technology Beet and Cane Sugar Manufacture, eds. Van der Poel, P.W., Schiweck, H, and
318
Schwartz, T. 1998, Bartens, Germany, chapter 19, 961-972. (17) Tateo, F. Production technology of chancaca Incas sugar. Ind. Aliment., 1978, 17, 28-
319 320 321 322 323 324 325 326
32. (18) Nagai, Y.; Mizutani, T.; Iwabe, H.; Araki, S.; Suzuki, M. Physiological functions of sugar cane extracts. Proc. Sugar Industry Technol. Mtg., 2001, 60, No. 795, 97-105. (19) Koge, K.; Saska, M.; Chou, C. Antioxidants and other functional extracts from sugarcane. In Asian Functional Foods CRC Press, 2006, 411-432. (20) Anon. 2017a. Organic sugar market analysis, size, share, growth, trends and forecast 2017-2022. Http://www.emailwire.com/release/503259. Accessed 10/25/2017.
327
(21) Balusundram, N.; Sundram, K.; Samman, S. 2005. Phenolic compounds in plants and
328
agri-industrial by-products. Antioxidant activity, occurrence, and potential uses. Food Chem.,
329
2005, 99, 191-203.
330 331
(22) Pelofske, E. Formulating for beverage innovation. Prepared Foods, 2017, July edn., 85-88.
332
(23) Paton, N. H.; Dong, M.; Barklett, M. Sugar cane phenolics and first expressed juice
333
colour. IV. Statistical relationships between concentration of chlorogenic acid and flavonoids in
334
cane, colour of cane extracts and color of first expressed juice. Internat. Sugar J., 1992, 94, 94-
335
210. 15 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
336
(24)
Page 16 of 22
Duarte-Almeida, J. M.; Salatino, A.; Genovese, M. I.; Lajolo, F. M.
Phenolic
337
composition and antioxidant activity of culms and sugarcane (Saccharum officinarum L.)
338
products. Food Chem. 2011, 125, 660-664.
339
(25) Eggleston, G.; Triplett, A., Boue, S.; Bett-Garber, K.; Bechtel, P.; Bice, D. Total
340
phenolics in sweet sorghum syrups compared to other commercial syrup sweeteners: Antioxidant
341
activity and color. J. Agric. Fd. Chem., 2018, in preparation.
342
(26) Eggleston, G.; Grisham, M. Oligosaccharides in cane and their formation on cane
343
deterioration. ACS Symposium Series 849, Eds: Eggleston G and Cote G., 2003, Oxford Univ.
344
Press, Chapter 16, 211-232.
345 346 347 348 349 350 351 352 353
(27) Côté, GL. 2008. Value-added products from sucrose. In: Novel Enzyme Technology for Food Applications, R.A. Rastall (ed.), Woodhead publishing. (28) Marinangeli, C. P; Jones, P. J.; Kassis, A. N.; Eskin, M. N. Policosanols as neutraceuticals: Fact or fiction. Crit. Rev. Food Sci. Nutr. 2010, 50, 259-267. (29) Koga, N. Development and application of new natural functional waxes. Fragrance J. (in Japanese), 1990, 8, 13-21. (30) Chibber, A. Australian company bets on cane flour. From https://www.foodnavigatorasia.com/Article/2011/11/08. 2011, pp.1. (31)
Gardner, P. T., White, T. A. C.; McPhail, D. B.; Duthie, G. G.
The relative
354
contributions of vitamin C, carotenoids and phenolids to the antioxidant protential of fruit juices.
355
Food Chem., 2000, 68, 392-398.
356
(32) Sánchez-Moreno, C.; Cao, G.; Ou, B.; Prior R. L. Free radical scavenging capacity
357
and inhibition of lipid oxidation of wines, grape juices and related polyphenolic compounds.
358
Food Research International, 2003, 32, 407-412.
16 ACS Paragon Plus Environment
Page 17 of 22
Journal of Agricultural and Food Chemistry
359 360 361 362 363
FIGURE CAPTIONS
364 365
Figure 1. Basic scheme of the raw sugar manufacturing process in a sugarcane factory that is
366
followed by the refining of raw sugar into white, refined sugar in a cane sugar refinery.
367
Typically the raw sugar is transported to the sugar refinery in trucks or barges; occasionally the
368
refinery can be next to the factory. Molasses with an asterisk is Blackstrap molasses produced at
369
the refinery, which is food-grade.
370
371
Figure 2. Lists of the multitude of functionalities of sugar in foods and beverages.
372 373 374 375 376 377 378 379 380 381 382 383 384 385 17 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
386 387 388 389 390 391
Table 1. Typical Composition of Conventional Sugar Products from Sugarcane Processing in the U.S.A.a Constituent
392 393 394 395
Sugarcane Juiceb
White, Blackstrap Refined (Refiners) Sugar Molasses (% on soluble solids) Non FoodFood-Grade Food-Grade Food Status in U.S.A: Grade 9000 10-50b >1 million Color (ICU) 79 - 88 99.70 - 99.95 35 - 37 Sucrose 2-4 0.003 16.5 Glucose 2 4 0.003 16.5 Fructose b,c n/a 0.023 20-25 Moisture 2-4 0.007 3.25 Inorganic Ash 0.12 trace 1-2 Kestoses 1.0 - 3.0 0.014 0.33 – 0.87 Organic Acids 0.5 - 2.5 no data 0.3 – 0.5 Amino Acids 0.5 - 0.6 0.003 4-5 Protein 0.1 - 0.6 0.002 no data Starch 0.3 - 0.6 no data no data Total Polysaccharides 0.05 - 0.15 0 no data Waxes, fats, phosphatides 0.4 - 2.0 0.002 3.5d Potassium 0.03 - 0.1 no data 0.1d Sodium 0.11 - 0.52 no data 1.5d Sulfate 0.10 - 0.29 no data 1.3d Chloride 0.17 - 0.32 0.001 0.7d Calcium 0.20 - 0.33 no data 0.3d Magnesium 0.06 - 0.71 no data no data Silica 0.01- 0.40 no data 0.3 Phosphate 0.07- 0.14 0.0001 0.02 Iron 0.000014 no data 0.00022 Biotin 0.0001 no data 0.0004 Vitamin B6 (Pyridoxine) 0.00006 0.000019 0.00025 Vitamin B2 (Riboflavin) 0.00005 no data 0.0001 Vitamin B1 (Thiamine) a Values vary from country to country, and from manufacturer to manufacturer. Specifications for edible products vary with usage. For example, beverage specifications for white, refined sugar are usually higher than for solid foods b n/a=not applicable
18 ACS Paragon Plus Environment
Page 18 of 22
Page 19 of 22
396 397 398 399 400 401 402 403 404 405 406
Journal of Agricultural and Food Chemistry
c
Sugarcane juice (first expressed) typically contains 73-76% water, 10-16% soluble solids (Brix), and 11-16% fiber (dry)
Table 2. Total Phenolic Content of Some Commercial Cane and Fruit Juices and Food Products from Sugarcane Available in the U.S.A. Commercial Juicea
Brand
A
Total Phenolics Content mg/La,b 418 ± 10
Sugarcane Syrup
A
Total Phenolics Content mg/La,b 1988 ± 113
B B
567 ± 11 728 ± 138
Sugarcane Syrup Cane Sugar Syrup
B C
759 ± 25 1209 ± 23
Commercial Cane Producta
Brand
Raw Sugarcane Juice Original Cane Juice Original Sugarcane Juice Lime and Mint Sugarcane Juice Strawberry Apple Organic Apple Apple Grapefruit Grapefruit
B
633 ± 16
Blackstrap Molassesc
D
2988 ± 60
n.d.d C D n.d. E
339 ± 4331 592 ± 27 1382 ± 15 535 ± 1131 766 ± 47
E E F G F
2977 ± 49 2941 ± 109 3024 ± 72 663 ± 18 722 ± 6
Orange Orange (no pulp)
n.d. F
755 ± 1831 585 ± 18
G F
1077 ± 26 1371 ± 4
C
569 ± 23
F
114 ± 4
G n.d.
751 ± 61 358 ± 331
H F
315 ± 39 363 ± 20
Blueberry
H
729 ± 28
G
276 ± 30
Peach Pomegranate Cranberry Cranberry
E I I H
741 ±13 2882 ± 58 716 ± 42 1798 ± 82
G F H F
116 ± 12 44 ± 4 43 ± 13 290 ± 5
Fresh Grape (red)
n.d.
172832
G
0
Fresh Grape (red)
n.d.
51932
Blackstrap Molassesc Full Flavor Molassesc Organic Molassesc Light Brown Sugar Organic Light Brown Sugar Dark Brown Sugar Organic Dark Brown Sugar Biodynamic Cane Sugar Turbinado Raw Sugar Organic Turbinado Raw Cane Sugar Demerara Washed Raw Cane Sugar Organic Cane Sugar Organic Cane Sugar Organic Cane Sugar Natural Cane Sugar (very light brown) Refined Cane Sugar Refined Cane Sugar
H
0
Organic Orange (no pulp) Orange (Valencia) Pineapple
19 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
Refined Cane Sugar 407 408 409 410 411 412
a
I
0
mg gallic acid equivalents/L. The Total Phenolic Content of the juices was determined using a Folin–Ciocalteu method with minor modifications, using gallic acid as the standard.25 All determinations were undertaken in triplicate, and the results are expressed as mg of gallic acid equivalents/L of extract. c All the molasses were unsulphured d n.d. = not disclosed by author b
413 414 415 416
Page 20 of 22
Fig. 1
417 418 419 420 421
20 ACS Paragon Plus Environment
Page 21 of 22
Journal of Agricultural and Food Chemistry
Fig. 2.
21 ACS Paragon Plus Environment
Journal of Agricultural and Food Chemistry
For Table of Contents Only
The Numerous Functions of Cane Sugar (Sucrose) in Foods which are Difficult to Replace:
22 ACS Paragon Plus Environment
Page 22 of 22