细菌素
- bacteriocin
![细菌素](../cache/1193000.jpg)
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对甘蓝泡菜的一株产细菌素植物乳杆菌LactobacilusplantarumG8进行了研究,确定了在MRS液体培养基中其细菌素产生的条件。
In this article , a bacteriocin produced Lactobacillus plantarum G 8 isolated from cabbage pickle was studied .
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产广谱细菌素米酒乳杆菌C2发酵培养基的研究
Study on Fermentation Medium of Broad-spectrum Bacteriocin Produced by Lactobacillus sake C2
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Lab为开发环境建立。乳酸菌发酵过程中的代谢产物包括有机酸和细菌素。
The metabolites during ferment of LAB include organic acids and bacteriocins .
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研究表明,培养温度30℃、时间48h、pH值为7时是乳酸菌细菌素的最佳产生条件。
The optimal conditions for bacteriocin production were incubation for 48 h at pH 7 and 30 ℃ .
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环境条件对发酵影响的研究表明,最佳起始pH值为6.5;产细菌素的最适温度为30℃;
The study on condition of fermentation showed that the optimum initial pH for producing Bacteriocin is 6.5 , it produced the highest amount of Bacteriocin at 30 ℃ .
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细菌素纯化后经SDS-PAGE电泳出现清晰条带,分子量在14.4kDa-20kDa之间。
The clear belts showed up after SDS-PAGE electrophoresis of purified bacteriocin ; its molecular weight was between 14.4 kDa-20 kDa .
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本研究探讨了营养要素(包括培养基组成和不同的起始pH值)和环境要素(包括培养温度、装液量和接种量)对细菌素产生的影响,以求得产生细菌素的最佳发酵条件。
Different factors were investigated such as the ingredients of medium , temperature , pH , inoculating amount and medium capacity on production of bacteriocin in order to optimize the fermentation condition .
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烟草青枯病菌(pseudomonassolanacearum)细菌素的生物学特性研究三种病原细菌产生细菌素的研究
Some Characteristics of Bacteriocin Produced by Pseudomonas solanacearum strain from Tobacco Study on the Bacteriocin from Three Pathogenic Bacteria
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研究表明,当培养基初始pH为6.5时菌株代谢产生活性最高的细菌素。这四种细菌素对胃蛋白酶、蛋白酶K和胰蛋白酶都较敏感。
The initial pH with 6.5 in media allowed the four studied strains to form the highest bacteriocins activity against sensitive organisms . All the bacteriocins were sensitive to pepsin , proteinase K and trpsin .
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用响应面方法对lactococcuslactis生产细菌素乳链菌肽的培养基进行了优化。
Response surface methodology was used to optimize a medium for nisin production of Lactococcus lactis .
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自从乳酸乳球菌代谢产生的细菌素Nisin批准作为食品防腐剂以来,细菌素的研究已成为食品微生物研究中的一个重要课题。
Development of bacteriocin had become an important topic , since Nisin production by Lactococcus lactis was licensed as preservative .
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选择X1、C15两株细菌进行细菌素的提取以及用SDS-聚丙烯酰胺凝胶电泳方法进行初步鉴定,发现有明显的电泳条带。
X1 and C15 were selected to extract the bacteriocin and proved their existence with SDS-PAGE .
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乳酸菌SD-22产类细菌素的生物学特性及初步应用研究
Properties of Bacteriocin-like substance synthesized by Lactobacillus SD-22 and its application in pork
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乳酸杆菌SD-22产类细菌素发酵条件的优化
Optimization of Fermentation Conditions for Production of Bacteriocin-like Substance by Lactobacillus Brevis SD-22
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结果所筛选的产细菌素R260菌株经鉴定为植物乳杆菌。
Results Bacteriocin-producing R260 strain was identified as Lactobacillus plantarum by physiological and biochemical experiments .
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着重介绍了乳酸菌一个重要的细菌素&nisin的分子遗传学研究现况:nisin的分子结构、生物合成、基因分析和表达、免疫抗性、作用方式以及在食品工业中的应用。
This is a systematic review on molecular genetics of Nisin , including its molecular structure , biosynthesis , analysis and expression of gene , immune resistace , mode of action and application of food industry .
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无致病力产细菌素拮抗菌MA-7防治番茄青枯病研究初报
Preliminary studies on control of bacterial wilt of tomato ( pseudomonas solanacearum ) by avirulent bacteriocin-producing stain ma-7
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细菌素(bacteriocin)是某些细菌产生的抑菌肽或蛋白,这些物质可以杀灭和抑制与之相同或相似生境的其他微生物。
Bacteriocins produced by certain bacteria are antimicrobial peptides or proteins , in sufficient amounts , these peptides can kill or inhibit bacteria competing for the same ecological niche or the same nutrient pool .
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通过预防接种J5菌苗和用抗菌素、细胞因子、细菌素及激素治疗奶牛乳腺炎,可有效地控制该病。
Through preventive inoculating J 5 vaccine and using antibiotic , cell factor , bacteria and hormone against mammitis of dairy cattle can effectively control this disease .
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结果表明,菌株MLS5发酵上清液经饱和度为50%硫酸铵盐析及732-阳离子交换树脂层析,最后细菌素得率为15.14%,比活力为1854.27IU/mg,是发酵上清液的31.96倍。
The bacteriocin was extracted and purified through both degree of saturation 50 % ammonium sulphate precipitation and 732-cation exchange resin chromatography . The yield of bacteriocin was 15.14 % . The specific activity was 1854.27IU/mg . and 31.96 times of supernate .
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1mg/mL的细菌素溶液可形成17mm的抑菌环,最小抑菌浓度为62.5μg/mL。
Final production rate of bacteriocin after purification with freeze-dry was 0.082 % , and solution of bacteriocin at 1 mg / mL formed an inhibitory ring with 17 mm in diameter , and its minimal inhibitory concentration was 62.5 μ g / mL.
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口臭;挥发性硫化物;细菌素。
Streptococcus salivarius ; halitosis ; volatile sulphur compound ; bacteriocins .
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1株抗猪链球菌细菌素产生菌的筛选与鉴定
Screening and identification of a strain producing bacteriocin against Streptococcus suis
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细菌素的应用及发酵条件的研究进展
Research Progresses on the Application and Fermentation Conditions of Bacteriocins
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长寿老人源产细菌素乳酸菌的筛选与分子生物学鉴定
Screening and identification of bacteriocin-producing lactic acid bacteria from centenarians ′ intestine
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产细菌素乳酸菌的选育及其抑菌特性的研究
Screening of bacteriocin-producing lactic acid bacteria and the characteristics of antibacterial compound
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温度诱导双水相分离纯化细菌素工艺条件的选取与优化
Optimizing Conditions for Bacteriocin Isolation and Purification in Temperature-induced Aqueous Two-phase Systems
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固定枯草芽孢杆菌发酵生产类细菌素的研究
Study on Bacteriocin - like Substance Fermentation by Immobilized Bacillus subtilis Cells
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细菌素在植物细菌病害生防中的应用
Application of bacteriocin in biological control of plant bacterial diseases
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有些细菌素对种外细菌也有抑制作用。
Some bacteriocins could also inhibit bacteria outside their species .