The effect of combination of L-ascorbic acid with cysteine and sodium sulfite on anti-browing of green tea liquor was better than that of single compound of L-ascorbic acid.
抗坏血酸与半胱氨酸和亚硫酸钠组合处理对绿茶水的保质效果优于L-抗坏血酸单独处理。
The second part, synthesized L-AS by a direct esterification from L-ascorbic acid and stearic acid by lipase-catalyzed.
第二部分，用脂肪酶催化l -抗坏血酸与硬脂酸直接酯化合成L - AS。
The stable derivative of L-ascorbic acid, L-ascorbic Acid-2-sulphuric acid ester dipotassium salts are synthesized using potassium pyrosulfate as esterifying agent and pyridine as solvent.
以焦硫酸钾为酯化剂，以吡啶为溶剂合成了L- 抗坏血酸的稳定衍生物L- 抗坏血酸- 2 - 硫酸酯二钾盐。
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