Spherical yeast OS-194 is an only erythritol production osmophilic yeast. 10 percent of glucose ,0.5 g/dL for yeast extract and 0.1 g/dL for urea were the best components of medium,which obtained high erythritol yield by OS-194.The optimum culture conditions were 35℃,150 rpm,and 4 d.

球擬酵母OS-194是一株單產(chǎn)赤蘚糖醇的耐高滲酵母日韩精品一区地址一地址二，該菌株高產(chǎn)赤蘚糖醇的最佳培養(yǎng)基配方為：葡萄糖10 g/dL国产美女在线精品网站，酵母膏0.5 g/dL，尿素0.1 g/dL精品熟女碰碰人人A久久。

RESULTS suc2 gene fragment of about 1.5 kb was amplified and cloned. DNA sequencing confirmed that , compared with the published sequence, the cloned suc2 gene had correct sequ ence except for one point mutation, but that did not alter the amino acid sequence o f t he encoded peptide. By transformation of yeast cells with a constructed gene dis ruption vector, four yeast clones were obtained which showed correct auxotrophy. PCR and DNA sequencing indicated that these yeast clones had the expected genot ype.

結(jié)果用 PCR從酵母基因組DNA中擴(kuò)增出大小約1.5 kb的suc2基因片段操国产熟女，序列測(cè)定表明除585位有一點(diǎn)突變外，所得suc2基因與文獻(xiàn)報(bào)道相同，構(gòu)建的定位突變載體導(dǎo)入酵母細(xì)胞后欧美XX网，得到4株?duì)I養(yǎng)型符合的突變體http://91.伊人.com，PCR表明這些突變體中均有suc2基因的同源重組，取其中1株的PCR產(chǎn)物進(jìn)行序列測(cè)定證實(shí)了同源重組的發(fā)生大色佬色色插入。

As shown by the result, the biomass and astaxanthin content of oceanic red yeast was reduced due to the presence of β-ionone which inhibited the synthesis of carotenoids. The lethality rate of oceanic red yeast would attained 92.3% if 370 mg/L of the β-ionone concentration was contained in the plate medium. The oceanic red yeast mutated by ethyl methane sulfonate was cultured on plate medium containing 370 mg/L of the β-ionone. 200 mutants were randomly screened, positive mutants with increased the biomass, astaxanthin volumetric yield and astaxanthin specific yield accounted for 18% of the total strain, the mutants with higher biomass, astaxanthin volumetric yield and astaxanthin specific yield higher occupied 22.5%, 45% and 46%, respectively.

實(shí)驗(yàn)結(jié)果表明97人人操.com，在β-紫羅蘭酮存在的情況下，由于類胡蘿卜素合成受到抑制精品久久人人摸，海洋紅酵母的生物量和蝦青素合成量都減少黄片一区二区免费看；當(dāng)平板培養(yǎng)基中β-紫羅蘭酮濃度達(dá)到370 mg/L時(shí)，海洋紅酵母的致死率為92.3%国产全程粗口对白；在這種平板培養(yǎng)基上涂布經(jīng)甲基磺酸乙酯誘變的海洋紅酵母美女狂摸尿口动态图GIF，隨機(jī)篩選200個(gè)菌落，結(jié)果表明生物量免费看到女人爽到高潮的视频、蝦青素體積產(chǎn)率和細(xì)胞產(chǎn)率均有所提高的正突變株占18%黄色网站秒播视频，生物量、蝦青素體積產(chǎn)率和細(xì)胞產(chǎn)率的單項(xiàng)指標(biāo)有所提高的正突變株分別占22.5%黄视频在线无限免费看、45%和46%美国免费黄色大片。

The result showed that the fermentation ability and survival ratio of BY-03 and FY-03 remained at about 40% and 60%, which was obviously higher than commercial yeast after freezing and kept up at -20℃ for 4 weeks. BY-03 and FY-03's maltase ability were respectively 10. 12 and 15.10u/g, which were higher than commercial yeast, and BY-03 and FY-03's sugar tolerance were also better than commercial yeast under 0%-4% sugar.

實(shí)驗(yàn)結(jié)果表明，-20℃下冷凍4周后BY-03和FY-03的發(fā)酵力保持在40%以上在线观看A网址，存活率在60%以上麻豆日韩一级黄片，明顯高于市售普通酵母；其麥芽糖酶活力分別為10.12和15.10u/g乱人伦熟妇中文字幕，高于普通低糖酵母和普通高糖酵母欧美一极；且在蔗糖質(zhì)量分?jǐn)?shù)為0%~40%的條件下生長良好。

We transformed antiapoptotic genes Bcl-2, CED-9 and PpBI-1 into the yeast to evaluate their function of resistance to cold stress. The results are as follows:(1) Cold induced apoptosis in yeast cells, moreover, yeast cells display representive features such as chromatin condensation, DNA fragmentation and chromatin margination.

而且酵母沒有如Bcl-2家族的主要凋亡調(diào)控基因的同源基因亚洲三级片免费观看视频，因此酵母是研究外源抗凋亡基因Bcl-2国产精品色哟，CED-9和PpBI-1在抗冷方面的作用及其調(diào)控機(jī)制的理想體系。

If beer yeast was saved at low-temperature beer ,that maybe reduce yeast dead and yeast autolyze and could ensure the beer quality.

研究表明雙乙酰還原結(jié)束后清纯唯美亚洲色图，應(yīng)該低溫儲(chǔ)存酵母特级毛片A片全部兔，以降低酵母的死亡率和酵母自溶，保證釀造的啤酒有純正風(fēng)味国产三级片免费看。

We selected the 2nd and the 3rd generation yeast with powerful vitality from the yeast mud fermented in tanks in working field as the ideal species source separated from yeast monoplast in beer and the ways to obtain them were as follows: 24 hours after deoxidisation of diacetyl to threshold value and decrease of its temperature to 5℃ was the best time for selection and sample－extraction location was at the nozzle of pressure－discharge pipes.

摘 要：從生產(chǎn)現(xiàn)場(chǎng)大罐發(fā)酵的酵母泥中選取第2～3代生命力強(qiáng)的酵母作為啤酒酵母單細(xì)胞分離的理想種源国产白领诱惑在线观看电影视频网站，選取的最好時(shí)間為雙乙酰還原至閾值后降溫至5℃，并讓其停留24h時(shí)取樣位置為排壓酵母的管口黄色视频免费在线看，最后將所得菌種進(jìn)行初選亚洲无码一级片黄片、復(fù)選或模擬生產(chǎn)恒溫培養(yǎng)鑒定，選出優(yōu)良菌株717电影网午夜福利理论片狼牙电影网。

These yeast extracts may simply be labeled as 'Autolyzed Yeast Extracts' or as 'Yeast Extracts'.

這些酵母抽提物一般被簡(jiǎn)單標(biāo)注為&自溶酵母抽提物&或&酵母抽提物&

There are two main categories of beer yeast: ale yeast and lager yeast.

啤酒酵母有兩大類：淡啤酒酵母和貯藏啤酒酵母免费A级毛片无卡免费视频。

With this method, the effect of autolyzation on the yeast vitality and the variation of yeast viability when the beer yeast was stored in high or low temperature were studied.

通過這種方法，研究了啤酒酵母自溶對(duì)酵母細(xì)胞活性的影響，以及高低溫貯存時(shí)酵母細(xì)胞活性的變化情況国产www性性。