(S)-苹果酸,(S)-malic acid
1)(S)-malic acid(S)-苹果酸
2)S-(-)-malic acidS-(-)-苹果酸
3)D-malic acidD-苹果酸
1.UsingD-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%。
英文短句/例句
1.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
2.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
3.sour apple酸苹果(打得不好的球)
4.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
5.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。
6.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
7.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
8.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
9.Apple pie. Apple pie. Apple pie. SOUP!苹果派，苹果派，苹果派，汤！
10.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
11.Study on Fermentation Promoter of MLF in Wine;葡萄酒苹果酸—乳酸发酵助剂的研究
12.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
13.any of numerous wild apple trees usually with small acid fruit.任何野生苹果树，果实小且酸。
14.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
15.ap-ple jui-cy, ap-ple sweet.苹果 多汁，苹果 甜。
16.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
17.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
18.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
相关短句/例句
S-(-)-malic acidS-(-)-苹果酸
3)D-malic acidD-苹果酸
1.UsingD-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%。
4)calcium malate苹果酸钙
1.The conditions for preparation of thecalcium 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。
2.The calcium fumarate was used as substrate to producecalcium 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。
3.It was very important to study the dissolution behaviors for substrate calcium fumarate and productcalcium 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。
5)L-(-)-Malic acidL-(-)-苹果酸
6)Malate["m?leit,"meileit]苹果酸
1.Study on Effects ofMalate on Rumen Fermentation and Performance of Inner Mongolia White Cashmere Goats;苹果酸对内蒙古白绒山羊瘤胃发酵功能及生产性能影响的研究
2.Research Progress on TonoplastMalate Transporter液泡膜苹果酸转运蛋白研究进展
3.A method is studied in this paper,thatMalate、 Citrate、 Cl~-、 NO_3~-etc in tobacco were determined by(anion-)chromatographic method with 10 mmol/L NaOH and ultrasonic for lixiviation.5 mL/min,成功地测定了烟草中的苹果酸、柠檬酸、NO3-、NO2-、Cl-、SO42-等成份。
延伸阅读
苹果酸苹果酸malicacid分子式HOOCCHOHCH2COOH。又称羟基丁二酸。广泛存在于未成熟的水果如苹果、葡萄、樱桃、菠萝、番茄中。苹果酸分子中含有一个手性碳原子（见不对称原子），有两种对映异构体，即左旋苹果酸和右旋苹果酸，其结构式分别为：天然存在的为左旋苹果酸，为无色晶体；熔点100℃，加热至140℃左右即分解成丁烯二酸；溶于水、乙醇、丙酮中。苹果酸含有羧基和羟基，具有这两种官能团的性质，例如与醇作用生成单酯或双酯。苹果酸不能形成酸酐，但易形成环状交酯。由反丁烯二酸钙经延胡索酶发酵水合，首先生成左旋苹果酸钙，酸化后得左旋苹果酸。若将反丁烯二酸或顺丁烯二酸经高温高压催化加水，可生成外消旋苹果酸。右旋苹果酸可由外消旋体拆分制得。苹果酸广泛用于食品工业，如制造饮料。苹果酸钠是无盐饮食的调味品。苹果酸酯可作人造奶油和其他食用油脂的添加剂。苹果酸也是制造醇酸树脂的原料。
