After treatment of rice seed with DL-malic acid the activities of amylase, dehydrogenases and catalases have increased.
水稻种子经苹果酸处理后，淀粉酶过氧化氢酶和脱氢酶活性均有提高。
The synthetic technique of pharmacopoeia grade DL-malic acid through orthogonal test was studied.
采用正交设计试验研究了药典级DL -苹果酸的合成工艺。
Citric acid, DL-malic acid, succinic acid and acetic acid were the main organic acids existed in the apple vinegar.
主要存在的有机酸为柠檬酸、DL -苹果酸、琥珀酸和乙酸。
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