乳酸

Was used as main material to produce lactic acid beverage ,the best fermented conditions determined by orthogonal test is that the additive amount of lactic acid bacteric is 2%,the additive amount of sucrose is 7%,the additive amount of pure milk is 15% and the fermented time is 30 hours.

以金樱子果为主要原料，研制乳酸饮料。运用正交实验确定其最佳发酵条件为乳酸发酵菌剂接种量为2%，加糖量为7%，牛奶添加量为15%，发酵时间为30h。所得产品口感良好、性质稳定，是一种营养保健的大众饮品

GPC results revealed that the molecule weight of PLA reduced to a certain extent during the processing. DSC scan showed that the crystallinity of the film not been drawn was low, which was propitious to be biaxially drawn in the later process.

通过GPC测试分子量及其分布表明，聚乳酸在加工过程中会有一定程度的降解；DSC分析说明，在现有的工艺条件下得到的厚膜具有较低的结晶度，有利于后期膜的双向拉伸进行，经双向拉伸后聚乳酸膜的结晶度具有较大程度的增加。

Among them, 3 strains isolated from yellow water could convert lactic acid into ethanol and most strains isolated from Daqu could convert lactic acid into flavoring compositions such as ethanol, isobutyric acid, caproic acid or isovaleric acid etc.

其中，从黄水和大曲中分离到多种降乳菌，黄水中的3株菌可将乳酸转化为乙醇，大曲中的多数降乳菌可转化乳酸为异丁酸、己酸、异戊酸、乙醇等风味成分。

The esterifying effects of monascus, daqu and rhizopus strain on single acid (acetic acid, caproic acid, lactic acid, butyric acid) and mixed acid (acetic acid,caproic acid,lactic acid, and butyric acid mixed together according to the ratio of 1∶1∶1∶1) were studied.

对红曲霉、大曲以及根霉菌对单一酸（乙酸、己酸、乳酸、丁酸）和混合酸（四大酸按1∶1∶1∶1混合）的酯化效果进行了研究，结果表明，红曲霉能促进己酸、丁酸及混合酸与乙醇的酯化作用，生成的酯类物质均为己酸乙酯，而且酯化能力极强；大曲能促进己酸、丁酸及混合酸与乙醇的酯化作用，生成的酯类物质均为己酸乙酯，并且能促进乙酸与乙醇的酯化生成乙酸乙酯；根霉能促进己酸和混合酸与乙醇的酯化作用，生成少量的己酸乙酯和乳酸乙酯。

Stannous caprylate was selected as the catalyst. Under certain vacuum, we investigate the relation of both the dose of catalyst, the temperature of reaction, the time of reaction and the molecular weight of the PLA.Furthermore we investigate how the purity of lactide and the circumstance of vacuum affect the molecular weight of the PLA.

实验中选用辛酸亚锡Sn(oct_2为催化剂，在一定的真空度下考察了催化剂用量、反应温度、反应时间与聚乳酸分子量的关系；并考察了丙交酯纯度及真空度对聚乳酸分子量的影响。

The activities of the lactic acid-producing cocci usually cease when the acid content reaches 0.7% to 1.0%.

当乳酸浓度达到O.7%～1.0%时产乳酸的球菌停止产酸。

The invention uses the method of the fusion and direct polymerization to prepare the carboxyl-terminated lactic acid prepolymer and then copolymerize with the aliphatic polycarbonate; then the reaction is done in the twin-screw extruder to screw out the extension chain and the good polylactic acid copolymer is made.

本发明采用熔融直接缩聚的方法制备出羧基封端的乳酸预聚物，接着再与脂肪族聚碳酸酯二元醇进行共聚，然后再在双螺杆挤出机中进行反应挤出扩链，制备性能良好的聚乳酸共聚物。

The n butyl lactate was synthesied by the esterification of lactic acid and n butyl alcohol in presence of ammonium ferric sulfate dodecahydrate NH 4Fe(SO 4) 2·12H 2O,and the factor influencing on the yield of reaction were discussed.

在十二水合硫酸铁铵催化下，由乳酸和正丁醇发生酯化反应合成了乳酸正丁酯。

The cure rate of Yunbao on the diseases was 93.10%,7273% and 83.33% respectively.The effect of ciprofloxacin lactate on purulent catarrhal endometritis was better than that of Yunbao...

乳酸环丙沙星治疗慢性卡他性脓性子宫内膜炎的效果优于&孕宝&，&孕宝&治疗慢性卡他性子宫内膜炎和隐性子宫内膜炎的效果则高于乳酸环丙沙星。

The results indicated that 16S rRNA gene homology of strain MD-9 with Lactobacillus fermentum was 99.6%.

目前发酵工业上生产乳酸的原料主要是玉米、大米等粮食，这也是造成乳酸生产成本较高的原因之一。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。