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Influence of temperature and humidity on the stability of carotenoids in biofortified maize (Zea mays L.) genotypes during controlled post-harvest storage Darwin Ortiz, Torbert Rocheford, and Mario G. Ferruzzi J. Agric. Food Chem., Just Accepted Manuscript • DOI: 10.1021/acs.jafc.5b05698 • Publication Date (Web): 03 Mar 2016 Downloaded from http://pubs.acs.org on March 7, 2016
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Journal of Agricultural and Food Chemistry 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.
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Journal of Agricultural and Food Chemistry
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1. Influence of temperature and humidity on the stability of carotenoids in biofortified
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maize (Zea mays L.) genotypes during controlled post-harvest storage
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Darwin Ortiz, 2Torbert Rocheford§, 1,3Mario G. Ferruzzi§
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Department of Food Science, Purdue University, West Lafayette, Indiana, USA
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Department of Agronomy, Purdue University, West Lafayette, Indiana, USA
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Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA
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6. §Corresponding Authors:
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7. Dr. Mario G Ferruzzi, Department of Food Science, Purdue University, 745 Agriculture Mall
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Dr, West Lafayette, IN 47907, USA.
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8. Email:
[email protected].
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9. Fax: +1-765-494-7953
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10. Dr. Torbert Rocheford, Department of Agronomy, Purdue University, West Lafayette, IN,
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USA
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11. Email:
[email protected] 18
12. Fax: +1-765-496-2926
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Journal of Agricultural and Food Chemistry
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13. ABSTRACT
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14. Maize is a staple crop that has been the subject of biofortification efforts to increase the
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natural content of provitamin A carotenoids. While significant progress towards increasing
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provitamin A carotenoid content in maize varieties has been made, post-harvest handling
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factors that influence carotenoid stability during storage have not been fully established. The
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objectives of this study were to determine carotenoid profiles of six selected provitamin A
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biofortified maize genotypes at various developmental stages, and assess the stability of
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carotenoids in maize kernels during controlled storage conditions (12 month-period),
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including elevated temperature and relative humidity (RH). There were no significant
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changes in the content of individual carotenoids within genotypes during kernel development
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from 45 days after pollination through the time of harvest. Carotenoid losses through
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traditional grain drying were also minimal (
