A hypothetical acid, NH2COOH, that exists only in the form of its esters and salts.
一种假设的酸，NH2COOH，仅存在于氨基甲酯和氨基甲盐中。
OBJECTIVE To compare the ability to quench singlet-oxygen of lutein and its esters from marigold flower in vitro.
目的比较万寿菊花中叶黄素及其酯体外淬灭单线态氧能力。
Stabilities of lutein and its esters against light, heat, acid, alkali, metal ions, oxidant and reductant were studied.
研究光、热、酸、碱、金属离子、氧化剂和还原剂对叶黄素酯和叶黄素稳定性的影响。
The result shows that polyglycerols that is synthesized by Z catalyst does not contain cyclic polyglycerols and its esters have better emulsification.
结果表明，由催化剂Z合成的聚甘油中不含有环状聚甘油，其聚甘油酯具有更好的乳化性能。
The properties and applications of sucrose fatty acid esters have been presented in the article. Its synthetic methods and features have also been summarized.
介绍了蔗糖脂肪酸酯的性质及其应用，概述了它的各种合成方法及各自的特点。
The phytosterol esters (PE) are the esterification products of phytosterols, its lowering cholesterol effect is better than the later.
植物甾醇酯（PE）是它的酯化产物，具有比植物甾醇更优的脂溶和更佳的降血胆固醇效果。
The synthesis of low cross-linking tertiary ammonium resin and its application to esters synthesis are studied in this paper.
本文研究了低交联度季铵树脂的合成及其在酯类合成中的应用。
The production of lactic acid, its salts and esters were introduced in China. The consumption and development progress of lactic acid were analyzed.
介绍了我国乳酸、乳酸盐(酯)的生产现状，分析了我国乳酸的生产消费及发展趋势。
This paper summarizes recent progresses of binders, esters and sand reclamation for the phenolic ester cured process, and put forward some ideas for its development in this country.
详细地叙述了酯硬化酚醛树脂砂采用新型酚醛树脂粘结剂、硬化剂和再生新工艺的最新进展，并对国内酯硬化酚醛树脂砂的研究与应用提出了若干建议。
The properties and applications of sucrose fatty acid esters have been presented in the article. Its analysis methods and features of these methods have also been summarized.
介绍了蔗糖脂肪酸的性质及其应用，概述了它的主要分析方法及各自的特点。
This article reviewed the current situation of the MAS of aromatic esters and prospected its future development.
该文综述了微波辅助合成芳香酯的研究进展，并展望了微波技术在芳香酯合成中的发展前景。
This article reviewed the current situation of the MAS of aromatic esters and prospected its future development.
该文综述了微波辅助合成芳香酯的研究进展，并展望了微波技术在芳香酯合成中的发展前景。
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