采用直接酯化法，将山梨酸与四种醇反应，合成了山梨酸甲酯、乙酯、丙酯、丁酯。
Methyl, ethyl, propyl and butyl sorbates were synthesized by esterification of sorbic acid with four kinds of alcohol respectively.
介绍一种新型的精细化工产品山梨酸乙酯的合成及在食品、畜牧业、农林业的应用。
The Synthesis of ethyl sorbate and it's applications in food industry, animal husbandry and agriculture are introduced.
通过与苯甲酸和山梨酸比较，说明尼泊金酯具有良好的市场和发展前景。
Compared with benzoic acid and sorbic acid, Nipagin has a good market and development prospects.
该法简单、快速、准确，可用于饼干、月饼等焙烤食品中糖精钠、富马酸二甲酯、苯甲酸和山梨酸的日常检测。
The method is simple, efficient and accurate, and suitable for routine analysis of saccharine sodium, dimethyl fumarate, benzoic acid, and sorbic acid in baked food such as biscuits and moon cakes.
本文研究了温度和紫外光对食品防腐剂山梨酸、对羟基苯甲酸乙酯的稳定性和防霉效果的影响。
In this paper, the affects of temperature and ultraviolet light on the stability and mildewproof effect of sorbic acid and ethyl-p-hydroxybenzoate used as food preserving agent, was studied.
用核磁共振波谱、质谱和红外光谱表征了非离子表面活性剂中山梨醇酐脂肪酸酯和聚氧乙烯山梨醇酐脂肪酸酯的结构特征和它们的组成。
The characteristics of structures and composition for sorption carboxylic esters and polyoxyethylene sorbitan carboxylic esters of typical non _ ionic surfactants are indicated by NMR, MS and IR.
对于所述表面活性剂，最适合的是非离子表面活性剂，并且可以使用脂肪酸酯，例如甘油脂肪酸酯、脱水山梨糖醇脂肪酸酯和蔗糖脂肪酸酯。
For the surfactants, non-ionic surfactants are most suitable, and fatty acid esters such as glycerine fatty acid esters, sorbitan fatty acid esters and sucrose fatty acid esters may be used.
为了解决这个限制，一个低分子量增塑剂如甘油数量，山梨醇，柠檬酸三乙酯使用。
To remedy this limitation, a number of low molecular weight plasticisers such as glycerol, sorbitol and triethyl citrate are used.
为脂肪酸（它是构成脂肪的）的一和二甘油酯及一油酸山梨糖醇酯。
The emulsifiers in all examples are mono-and diglycerides of fat-forming fatty acids or soubitan monooleate.
为脂肪酸（它是构成脂肪的）的一和二甘油酯及一油酸山梨糖醇酯。
The emulsifiers in all examples are mono-and diglycerides of fat-forming fatty acids or soubitan monooleate.
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