Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1987-07-28
1989-03-07
Gray, Bruce D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C07C10102
Patent
active
048108189
ABSTRACT:
A process for producing dry .alpha.-L-aspartyl-L-phenylalanine methyl ester having an improved solubility from wet crystals of .alpha.-L-aspartyl-L-phenylalanine methyl ester having a water content of at least 20% by weight, which comprises drying the wet crystals at a temperature of higher than 50.degree. C. to obtain moist crystals having a water content of less than 20 and more than 15% by weight, then drying the moist crystals at a temperature of not higher than 50.degree. C. to obtain semi-dry crystals having a water content of less than 5% by weight, and further drying the semi-dry crystals at a temperature of higher than 50.degree. C. to obtain dry crystals of .alpha.-L-aspartyl-L-phenylalanine methyl ester.
REFERENCES:
patent: 4579747 (1986-04-01), Sugiyama et al.
Perry et al, Chemical Engineers' Handbook, 5th ed, McGraw-Hill, New York, pp. 20-4 to 20-16 (1973).
"Application Potential for Aspartame in Low Calorie and Dietetic Foods", In Low Calorie and Special Dietary Foods, pp. 59-114, CRC Press 1978 CFR 21, Food and Drugs revised as of Apr. 1, 1981.
Harada Tsuneo
Irino Shigeaki
Oyama Kiyotaka
Tokuda Akira
Wakamatsu Hidetoshi
Gray Bruce D.
Toyo Soda Manufacturing Co., Ltd
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