生物素羧化 的英文怎麼說
中文拼音 [shēngwùsùsuōhuà]
生物素羧化
英文
biotin carboxylase- 生 : Ⅰ動詞1 （生育; 生殖） give birth to; bear 2 （出生） be born 3 （生長） grow 4 （生存; 活） live;...
- 物 : 名詞1 （東西） thing; matter; object 2 （指自己以外的人或與己相對的環境） other people; the outsi...
- 素 : Ⅰ形容詞1 （本色; 白色） white 2 （顏色單純） plain; simple; quiet 3 （本來的; 原有的） native Ⅱ名...
- 羧 : 名詞[化學] （羧基） carboxyl
- 生物 : living things; living beings; organisms; bios （pl bioi bioses）; biont; thing; life生物材料 biol...
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The microorganism which produce ethanol from lignocellulose must be able to dissimilate both five - carbon and six - carbon sugars and consist of the pdc and adh ii which are key enzymes in ethanol formation. regretfully, no naturally occurring organism can efficiently1 produce ethanol from all monosaccharides
要從木質纖維素生成乙醇，所利用的微生物必須能同化所有的戊糖、已糖成分，而且含有生成乙醇的關鍵酶：丙酮酸脫羧酶（ pdc ）和乙醇脫氫酶（ adh ） 。Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased
文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少Chitin possesses special character and usage after modification such as modified as sulphonation, carboxymethylation, deacetylation etc. the derivatives are widely used in the fields of chemical industry, medicine, food, cosmetics, printing and dyeing, papermaking, environmental protection and agriculture etc. chitin is the ba
甲殼素經過化學修飾和改性，如磺化羧甲基化脫乙酰化等可獲得具有特殊性質和用途的甲殼質系列衍生物，在化工醫藥食品化妝品印染造紙環保農業等領域具有廣泛用途。
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