乳酸

Objective To explore the effect of Lactobacillus fermentation filtrate and its components on the cell cycle and apoptosis of Hela cell as well as its possible mechanism.

目的 观察乳酸杆菌DM9811发酵滤液对宫颈癌细胞株Hela细胞的细胞周期和细胞凋亡的影响，探索乳酸杆菌发酵滤液对宫颈癌细胞作用的可能机制。

These differences arise from different stabilities of a common intermediate of reduced flavin enzyme and pyruvate.

乳酸单加氧酶的催化机理和乳酸氧化酶相似，但产物不同，这主要是由于中间产物复合体稳定性的差别。

The purpose of this study was to investigate the relationship between lactate threshold and lactate production after resistance exercise.

本研究的目的在探讨乳酸阈值对重量运动后乳酸产生的关系。

DETERMINATION OF LACTIC ACID AND LACTATES CONTENT.

乳酸和乳酸酯含量的测定。

PLA has been produced by ring-opening polymerization of lactide or direct polycondensation of lactic acid.

制备聚乳酸常通过乳酸的直接聚合或丙交酯的开环聚合两种方法。

Two main synthesis methods of PLA, condensation polymerization of lactic acid and ring-opening polymerization of lactide in recent years are described in details, and the situation of production is analyzed as well.

最后，对聚乳酸的合成及应用前景进行了展望，并指出可生物降解材料聚乳酸一旦工业化，它在医用及降解塑料方面将会有难以估量的应用前景

The cost of lactide is one of the most important factors that hamper the PLA from widely use for a long time. In this paper a series of apparatus which can boost the product ratio to the utmost was focused on. Meanwhile the factors affecting the molecular weight of PLA in the polymerization were also discussed.

长期以来丙交酯的成本一直是制约聚乳酸推广应用的最重要的因素之一，本文致力于设计出一套能最大限度降低丙交酯成本的工艺过程，并对丙交酯聚合过程中影响聚乳酸分子量的因素进行了初步探讨。

It was shown that high optical purity lactide and crystallization in polymerization led to higher molecular weight PLA using low-toxic zinc lactate as catalyst.

结果表明，合适的裂解温度有利于合成高光学纯度的丙交酯；在低毒乳酸锌的催化作用下，高光学纯度的单体以及聚合过程中的结晶都有利于制备高分子量聚乳酸。

Objective To investigate the adhesive ability of lactobacillus to enterocytes and the effects of spent culture supernatant of lactobacillus on it.

目的研究乳酸杆菌与肠上皮细胞的黏附作用，以及乳酸杆菌的耗尽培养上清液对其黏附性的影响。

The lactic acid product was analyzed and the quality met the specifications of GB 2023—80,and the mass spectrum of was identical with standard lactic acid.

分析的指标中，完全达到GB 2023—80对乳酸的质量规定，并且乳酸产品与标准品的质谱图吻合很好。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。