It is important that fatty acid ester has alcohol of plant steriod alkyl and good physiology function. The cost of enzymatic law synthesis of steriod alkyl mellow ester is difficult the activator that at realizing industrialized; tradition existence of chemical synthesis law reacts temperature Gao Yi produces the problem such as deputy reaction to consider to aim to search efficient green originally builds alcohol of alkyl of effective synthesis steriod the method of fatty acid ester. The sieve singled out exterior activator to combine proton acid activator 12 alkyl are vitriolic sodium combines hydrochloric acid (SDS+HCl)+%119 ℃ %; chooses linoleic acid to study not saturated fatty acid for the representing best craft condition is the synthetic craft of ester heart thing sick at heart is pure 31 activator SDS+HCl adds Maerbi the quantity is 3%150. The method that determined mellow ester of alkyl of TLC detached steriod used law of analyse of layer of silica gel column to depart mixture of steriod alkyl mellow ester. Saturated fatty acid steriod alkyl mellow ester with ℃ of oil aether 60-90 / ester of second acerbity second (91v/v) is flow (the article in all 61 pages) article catalog | Read full text >>Paper of Master of university of authoritative provenance Changjiang Delta 2012 university of Hua Zhongke ability
L- ascorbic acid and its salt kind it is a kind of commonly used water-solubility antioxidant but the application that because sex of oily dissolve of this kind of antioxidant is poorer,restricted its to wait for a domain in grease food and cosmetic. And L- ascorbic acid and commonly used fatty acid (or alkyl ester) the L- that reaction gets ester maintained ascorbic acid fatty acid not only ascorbic acid fights L- of oxidation characteristic and moving, the solubility that comparative is had in vegetable oil. Because this is applied extensively at the industry such as grease food, cosmetic and medical sanitation. Current L- ascorbic acid fatty acid it is more difficult that ester synthesizes product quality control, downstream depart with chemical craft more return existence pollution to discharge. Was activator to study with palmy acid armour ester, fatty acid and soybean oil are mode heart thing to synthesize L- ascorbic acid fatty acid with lipase to overcome these defect to consider to be medium with organic dissolvent originally the enzymatic law of ester engineering technology. Main result is as follows (1) was optimized turn over law of color atlas of photograph of concentrated juice to make its can detect at the same time L- ascorbic acid and L- ascorbic acid fatty acid the content of ester. (2) is used on the foundation that only factor experiments answered cover magic art to optimize L- ascorbic acid is palmy the technology of equipment of enzymatic legal system of acerbity ester. The Maerbi that best parameter is ascorbic acid of 10 MLL- of Ding Chun of father's younger brother and ester of palmy acid armour reacts for ℃ of 1 ∶ .6 time is 1. . . (The article in all 75 pages) article catalog | Read full text >>
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