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KMID : 0380619920240030247
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Korean Journal of Food Science and Technology
1992 Volume.24 No. 3 p.247 ~ p.250
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Effects of Free Alkali and Moisture on Sucrose Polyesters Synthesis
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김석주/Kim, Suk ju
공운영/윤희남/정하열/윤성우/Kong, Un Young/Yoon, Hee Nam/Chung, Ha Yull/Yoon, Sung Woo
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Abstract
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Effects of free alkali and moisture on sucrose polyesters (SPE)-possible non calorie fat substitute synthesis were investigated using a model system composed of sodium oleate, sucrose, potassium carbonate and methyl oleate. Trace amounts of free alkali in sodium oleate were found to interefere with SPE synthesis. When free alkali content in sodium oleate was varied gradually from 0% to 5% (w/w), the yield of SPE production was reduced from 92% to 45.5%. The moisture absorbed in sodium oleate, sucrose and potassium carbonate during storage also interefered with SPE synthesis. The yield (92%) of SPE production with dried (105℃, 6 hrs) reactants and catalysts was higher than that (89%) of SPE production with non-dried. Soybean oil fatty acid sodium soaps (FASS) not containing free alkali could be manufactured with slightly less than molar ratio of sodium hydroxide to soybean oil fatty acid methyl esters (FAME). Practically, 91.7% yield of soybean oil SPE production was outcomed by minimizing free alkali and moisture which were remaining in sucrose, potassium carbonate, soybean oil FASS and soybean oil FAME.
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