1)  endogenous activity
内源活性
2)  Endogenous
内源
1.
The contents of endogenous IAA and ABA in the differentiation of adventitious root in vitro of Elaeocarpus sylvestris were studied.
本文研究山杜英组培苗生根过程中内源IAA、ABA含量变化规律。
3)  endogenous NO
内源NO
4)  endogenous processes
内源过程
1.
But sludge reduction was essentially carried out by the manipulation of endogenous processes.
利用原生动物的捕食作用进行污泥减量的研究对污水处理厂普遍存在的污泥控制问题有着重要的现实意义,但污泥减量的本质是通过控制微生物内源过程实现的。
5)  internal pollution sources
内源污染
1.
The study on the causes of eutrophication shows that internal pollution sources and external pollution sources are the main causes for the eutrophication .
对富营养化成因进行分析,结果表明内源污染和外源污染是造成洋河水库富营养化的主要原因,其中淀粉废水和地表径流是主要的外污染源。
6)  endogenous enzymes
内源酶
1.
Angiotensin I-converting enzyme inhibitory activity of shrimp meat hydrolysate by endogenous enzymes from shrimp head and its antihypertensive effects on spontaneously hypertensive rats;
虾头内源酶酶解虾肉产物的ACE抑制活性及其降低原发性高血压老鼠血压的效果(英文)
2.
Analysis of endogenous enzymes activity in mutant of Populus tomentosaand its relative species during root formation;
芽变毛白杨及其亲缘种扦插生根相关内源酶活性特征分析
3.
While Labadou is produced with soybean which is enzymolysised by endogenous enzymes to a certain extent, the hardness of the product is obviously reduced and the content of nitrogen of amino acid and reducing sugar increase to a certain extent.
大豆经内源酶作用生产腊八豆,产品的氨基态氮和还原糖的含量都有增加,货架期内产品的硬度明显降低。
参考词条
补充资料:-戊内酯、3-甲基丁内酯、咖吗-戊内酯
CAS: 108-29-2
分子式: C5H8O2
分子质量: 100.12
沸点: 207-208℃
熔点: -31-208℃

中文名称: 4-戊内酯、γ-戊内酯、3-甲基丁内酯、咖吗-戊内酯

英文名称: dihydro-5-methyl-2(3H)-Furanone、dihydro-5-methyl-2(3h)-furanon、4-hydroxypentanoic acid lactone、4-hydroxyvaleric acid lactone、4-methyl-gamma-butyrolactone、gamma-methyl-gamma-butyrolactone、gamma-valerolakton

性质描述: 无色至微黄色液体。凝固点-31℃,沸点205-206.5℃,83-84℃(1.73kPa),相对密度(25/25℃)1.0578,折光率(nD25)1.4301。能与水、许多有机溶剂、树脂和蜡等混溶。10%水溶液的pH为4.2。

生产方法: 由不饱和羧酸通过闭环反应来合成,例如乙酰乙酸与硫酸共热,或乙酰丙酸在镍、铜等催化剂存在下加氢。

用途: γ-戊内酯有较强的反应能力,可用作树脂溶剂及各种有关化合物的中间体。也用作润滑剂、增塑剂、非离子型表面活性剂的胶凝剂、加铅汽油的内酯类添加剂,用于纤维素酯和合成纤维的染色。γ-戊内酯具有香兰素和椰子香味。我国GB2760-86规定为允许使用的食用香料。主要用以配制桃、椰子、香草等型香精。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。