查询词典 lactic acid

An innovative process for the production of high molecular weight poly(L-lactic acid) was presented, featuring solid-state polycondensation of L-lactic acid in a closed system with a dehydrant to remove water selectively.

研究在真空密闭、存在脱水剂的条件下聚乳酸固相缩聚工艺的可行性，得到了分子量达25万的聚乳酸；实验研究了催化剂浓度，预聚体粒度和反应时间对缩聚过程的影响，表明降解副反应仍然是控制聚乳酸最终分子量的重要因素。

Based on the higher alcohols and lactic acid metabolism theory, a method was developed to low higher alcohols capability Saccharomyces cerevisiae strains by screening high lactic acid dehydrogenization enzyme activity in this study.

本研究对Y1110菌株及其出发菌株、突变等株16株不同来源的酵母菌株进行全基因组RAPD分析，建立并优化了酵母RAPD扩增体系和分型系统，从20条随机引物中筛选出了3条具有较好的扩增多态性，共扩增出34条RAPD谱带，多态性为85.3％；获得了稳定清晰的RAPD指纹图谱。

Each of three lactic acid bacteria from EZAL-MY96 was cultured and fermental techniques were studied by experiments with 5L fermentive vessel. Technique parameters of three lactic acid bacteria were determined.

对EZAL-MY96直投式酸奶发酵剂中分离出来的3株乳酸菌利用5L发酵罐进行发酵工艺研究，确定3株菌中每一菌株的最佳发酵工艺参数。

This study has discussed that Lactic acid bacteria are isolated from 752 samples of milk and other dairy products, collected from 500 household in pastoral areas in Inner mongolia, and its biological properties are analyzed and studied.765 strains of lactic acid bacteria, including 28 species of Lactobacellus,2 species strains of Bifidobacterium, 9 species strains of Enterococcus, 3 species strains of Lactococcus, 1 specie of Streptococcus, 6 species of Leuconostoc,1 specie of Pediococcus , are identified.

从代表内蒙古牧区不同地域特点和独特生态环境的9个盟市18个牧业旗500多户牧民家庭，以目的采样和层次分类随机采样相结合的方法，共采集鲜乳及乳制品样品752份，分离到947株乳酸菌，并用形态、染色、培养特性及生化反应等实验对其进行了鉴定，有765株实验菌株分别归于7个属50个种和亚种，其中归于乳杆菌属的有28个种和亚种；归于双歧杆菌属的有2个种；归于肠球菌属的有9个种；归于链球菌属的有1个种；归于乳球菌属的有3个种和亚种；归于明串珠菌属的有6个种和亚种；归于片球菌属的有1个种。

Star-shaped polyL-lactic acid(SPLLA was synthesized using L-lactic acid and pentaerythritol as starting material by means of polycondensation .

以L-乳酸和季戊四醇为原料，采用缩聚法合成了星形结构的聚L-乳酸。

High performance liquid chromatographyanalysis showed the mango fruit of these two cultivars contained 3 carbohydrates, 11 organic acids and 4 carotenoids. The carbohydrates were composed of fructose, glucose and sucrose; the organic acids were oxalic acid, tartaric acid, quinin acid, malic acid, ascorbic acid, lactic acid,α-ketoglutaric acid, citric acid, fumaric acid, succinic acid and gallic acid; the carotenoids were violaxanthin,β-carotene, lutein, lycopene.

高效液相色谱分析表明，芒果果实共含3种糖、11种有机酸和4种类胡萝卜素，即果糖、葡萄糖和蔗糖；草酸、酒石酸、奎尼酸、苹果酸、抗坏血酸、乳酸、α-酮戊二酸、柠檬酸、富马酸、琥珀酸和没食子酸；堇菜黄素、β-胡萝卜素、叶黄素和番茄红素。

Most lactic acid bacteria are commonly considered as safe probiotics. Some strains of lactic acid bacteria are found to have the ability to adhere and live in the gastro-intestinal tract, urinogenital system or mucosa with no contemporary immunogenicity.

大部分乳酸菌是普遍认为安全的益生菌，利用一些乳酸菌可以在胃肠道、泌尿、生殖系统中或粘膜部位粘附存活且无病原性等特点，开展乳酸菌作为活菌口。。。

Some cheeses are coagulated entirely by lactic acid bacteria and are known as lactic-curd or acid-curd cheeses.

有些奶酪是凝固完全由乳酸菌和被称为乳酸豆腐或酸奶酪豆腐。

In order to prove the anti-fatigue function, we do the experiment of mouse swimming with a heavy burden, the test of lactic acid, the test of lactic acid deoxidizing enzyme and the test of serum urea nitrogen respectively.

为正实抗疲劳功能，分别作了金匮回生液小鼠负重游泳实验，乳酸的测定，乳酸脱氧酶的测定，血清尿素氮的测定等四个项目试验。

The method pressurizes and domesticates lactic acid bacteria under the concentration which is close to or higher than the concentration of gastrointestinal urea of patients with uremia, which cultures conversion urea with high efficiency and food-grade lactic acid bacteria which adapts to gastrointestinal environment.

本方法在近似于或者高于尿毒症患者胃肠尿素浓度下对乳酸菌进行加压驯化，培育出了高效率转化尿素、适应胃肠环境的食品级乳酸菌。

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。