N E E R I N G C I l E M I STW Y
convertor haviug a (:apitcity of 40 gallons (151.6 liters), Steam was introduced until a pressure of 25 pourids per square inch (1.8 kg. per sq. cm.) wzs reached. This pressure was maintained for about 20 minutes, and the hydrolyzed extract then bluwn off. During the conversion tliere was a 10 per cent dilution of the extract oiviirg to the steam. The extent of the hydrolyris tinder t11e.e &ditiotis was 80 to 90 per cent of the hydrolyzable material. The acidified and converted extract was then traitsferred to a glass-lined vacuum sugar pail and concentrated to a derisity of 60 per cent solids. Ihring this concentration some hydrochloric acid i m s lost in the distillate, thereby reducing the amount OS alkali required for neutralizxtion. The sirup was ivitbdrnwii from the pan and neutralized with soda to a pII of 5.4, the course of the neutralization lieirig followed by nieaiis of the quinligdrone elect,rode. The neutralized sirup was filtered and treated with Carboraffin to reduce the color tu a value approxiniating that of an average maple sirup. The resulting sirup WBB returried to tlic pan arid concent,rated to 82 per cent solidi;. The sirup has been marketed in this commimity tlirouglr the agency of the University Agricultural Sales Room A number of users have expressed Favorahle comments. The principal uses thus far hare been as a general tahle sirug aid in cooking recipes in wliich a colorcd sirup mag be used. Ot,lier tests.. dcoeiidine more snecificallv 011 the exocotional . progcrties of Iev~~Iosc, are imm being made.
VOI.
25,
NO.
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ACKNOWLEDGMENT This mvestigation was made possible through a special appropriation by the University of Illinois for a study of the growing and utilization of new agricultural products. To Roger Adams who has sponsored this uroiect and whose aid a n i encouragement have been chiefly responsible for the resnits obtained the authors wish to express their appreciation. ~~1TEllAl'UP.ECITED
Hmf.MO.Bull., 8 , 243 (ISIU). (2) Cohen. B.S. Thesis. Unir. of Ill., 1Y29. (3) Usweon, M.S. Thesis, Univ. of 111.. 1928. (4) Golovin, Uryukhaiiovn. and Fridman,J. S u g a i l n d . (U.S. S. R.). 3, 140 (192'3). (5) Harding,?'. S., Bugw. 25,406(1923). (6) Hardinp. W. T., I5.S. rheais, Univ. of Ill., 1'321 ( 6 8 ) Heiibaiirn, Pacts About SUWT. 28. to be uublishc!d (1933). (7) Hoehe. Z. Ver. deut. Zuckwind. 76. UT:I (1936). (8) Jackson, Siisbeo. and l'mfiitt. Bur. Standards, Sei. Paper 519 (1) Cockerell. CaILJ. Comm.
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(Y) lilcidorer and Englis, Ino. ENG.CIIE&
