Using D-malic acid as materials,Ethyl(R)-2-hydroxy-4-phenylbutyrate is synthesized by four steps of anhydride activity,Frieded-Crafts reaction,hydrogenolysis and esterification.
从D-苹果酸出发,经过酐活化、付-克反应、常压催化氢解和酯化四步合成了(R)-2-羟基-4-苯基丁酸乙酯,总收率达到了68%。
The conditions for preparation of the calcium malate from seashells were studied from the angle of environmental protection in this pa- per.
从保护环境的角度出发,探索了以废弃贝壳为原料制备苹果酸钙的工艺条件。
The calcium fumarate was used as substrate to produce calcium malate directly.
运用生物反应分离耦合原理 ,以富马酸钙为底物 ,采用游离延胡索酸酶 ,直接转化生成苹果酸钙。
It was very important to study the dissolution behaviors for substrate calcium fumarate and product calcium malate.
采用反应分离耦合技术以富马酸钙为底物生产Ｌ－苹果酸是目前该产品生产的最佳方式，因此，研究该工艺过程中底物富马酸钙与产物苹果酸钙的溶解行为显得十分重要。
Research on Production of D-Malice Acid in Simultaneous Reaction and Separation;
反应分离耦合制备D-苹果酸的研究
Seperation of Amino Nitrogen and Fruit Acid (malic acid) in Apple Juice;
苹果汁中氨基态氮、果酸（苹果酸）的分离
sour apple
酸苹果(打得不好的球)
Studies on Molybdenum and Tungsten Complexes with Citrate, Malate and Citramalate
柠檬酸、苹果酸和柠苹酸钼（钨）配合物研究
Tart apples taste sharp and are pleasantly acid in their taste.
酸苹果的味道酸，但酸的令人舒服。
Inhibition of preharvest malic acid treatment on skin browning of pear fruit(cv.Pingguo)
采前喷施苹果酸对苹果梨采后黑皮病的抑制
Inhibiting effect of postharvest malic acid treatment on blue mould of pears(cv.Pingguoli)
采后苹果酸处理对苹果梨青霉病的抑制
Study on L-Malic Acid Production Technology by Submerged Fermentation
利用苹果渣发酵生产L-苹果酸工艺研究
Apple pie. Apple pie. Apple pie. SOUP!
苹果派，苹果派，苹果派，汤！
Preparation and Application on the Compound Salt of Calcium Citrate Malate;
柠檬酸—苹果酸钙复合盐的制备和应用
Study on Fermentation Promoter of MLF in Wine;
葡萄酒苹果酸—乳酸发酵助剂的研究
Studies on the Preparation and Application of Calcium Otrate Maltrate;
柠檬酸、苹果酸钙的制备与应用研究
any of numerous wild apple trees usually with small acid fruit.
任何野生苹果树，果实小且酸。
Study on Sugar Organic Acid and Phenolic Compounds of Processing Apple Fruit;
加工苹果果实中糖酸和酚类物质研究
ap-ple jui-cy, ap-ple sweet.
苹果 多汁，苹果 甜。
Sulfur Dioxide Control in Apple Wine Fermentation and the Effect on Malolactic Fermentation;
苹果酒发酵中SO_2的控制及其对苹果酸乳酸发酵的影响
Cloning and Expression Analysis of Key Genes Related to Malic Acid Metabolism and Accumulation in Apple Fruit;
苹果果实中苹果酸代谢关键酶基因的克隆和表达分析
Determination of L-lactic Acid in Malolactic Fermentation Solution with Enzyme Electrode
酶电极法检测苹果酸-乳酸发酵过程中乳酸变化