propionic acid造句
例句與造句
- This paper is focused on reviewing the present application - oriented research of extraction technique based on chemical complexation in food analyzing , separating of amino acid fermented liquid , disposing of citric liquid waste , separating of lactic acid fermented liquid and separating of propionic acid fermented liquid
摘要綜述了絡合萃取技術在食品分析、氨基酸發(fā)酵液分離、檸檬酸廢水處理、乳酸發(fā)酵液分離和丙酸發(fā)酵液分離中的應用特點和研究進展。 - But in s . mycarofaciens , there is no distinctive propionate kinase , so that the utilization rate of propionic acid is lower than that of acetic acid . for this reason , it is hoped that the higher producers would be obtained by protoplast interspecies fusion between s . mycarofaciens and s . erythreus , which would transfer propionate kinase of s . erythreus to s . mycarofaciens . therefore , the fusion cells could use propionic acid as precursor in synthesis of mdma _ ( 1 ) , which would reduce the production costs
根據(jù)文獻報道，紅霉素鏈霉菌中的丙酸激酶對丙酸的利用率是對乙酸的利用率的13倍；而在生米卡鏈霉菌中，無特異的丙酸激酶，菌體對丙酸的利用低于對乙酸的利用，因此希望利用原生質(zhì)體種間融合的方法將紅霉素鏈霉菌的丙酸激酶基因轉(zhuǎn)移到生米卡鏈霉菌中，從而使融合子能夠利用丙酸鹽作為合成mdma _ 1的前體，提高mdma _ 1的產(chǎn)量，降低生產(chǎn)成本。 - The synthesis of poly ( - hydroxybutyrate - co - - hydroxyvalerate ) by the strain g - iiiy from different precusor was studied . it was found that the strain g - iiiy could accumulate phbv with sucrose as carbon source and propionic acid or valeric acid as precursor . in 2l self - controlled fermentor , the dry cell weight , phbv concentration and phbv content reached 35 . 8g ? l - 1 , 22 . 6g ? l - 1 and 38 . 4 % respectively in the case of fermentation for 42 hours and the propionic acid as precursor
研究了添加不同前體物， g - y菌株生產(chǎn)聚-羥基丁酸和聚-羥基戊酸共聚物( phbv )的發(fā)酵條件，結(jié)果表明，此菌株能以丙酸或戊酸為前體，在蔗糖為碳源的條件下合成phbv共聚物；在2l發(fā)酵罐中，以丙酸為前體，發(fā)酵16小時開始流加丙酸，根據(jù)發(fā)酵液ph值變化控制丙酸流加量，發(fā)酵42小時，細胞干重、 phbv產(chǎn)量和含量分別達到35 . 8g / l ， 22 . 6g / l ， 63 . 13 。 - 464 and erythromycin producer s . erythreus as original strains , studies were carried out for researching higher producers and enhancing content of midecamycin ( mdm ) ai , which could use propionate as precursor to reduce production costs . according to the literature , the utilization rate of propionic acid is thirteen times to that of acetic acid by propionate kinase in s . erythreus
本論文主要研究了生米卡鏈霉菌與紅霉素鏈霉菌原生質(zhì)體種間融合育種，以提高麥迪霉素a _ 1 ( mdma _ 1 )的組分，增加其對丙酸鹽的利用度，降低生產(chǎn)成本。 - It's difficult to find propionic acid in a sentence. 用propionic acid造句挺難的
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