After the culture medium was steeped in 40℃ ion free water for 60?minutes ,the crude cellulase liquid was made by filtering the steeper, when the content of tannin in the enzyme liquid up to 5.
在酶活为FPase 2 2 6u/mL的稀酶液中 ,加入丹宁至 5 0g/L时 ,粗酶液中纤维素酶接近完全沉淀下来 ,将沉淀分散于 pH4 6的 0 1mol/L柠檬酸缓冲液中 ,加入分子质量为 6 0 0 0u的聚乙二醇 (PEG)至丹宁含量的 1 6～ 4 0倍 ,酶活回收率达到2 10 %～ 2 4 5 % ,可将纤维素酶浓缩 7～ 8倍。
Review in the Studies on Tannins Activity of Cancer Prevention and Anticancer;
丹宁类化合物防癌抗癌活性研究
The tannins from grapes come from different parts,but all of them are the polymers of catechin.
葡萄浆果中的丹宁都是儿茶素的多聚体 ,其中最主要的是表儿茶素 ;原飞燕草素是果皮和果梗中特有的丹宁单体分子 ,而木立口 酸化丹宁是种子中的主要丹宁 ,也是葡萄浆果中涩感最强的丹宁。
The mixed solvent of ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate and water has efficiently promoted the synthesis of a variety of 5-arylmethylidene-4-oxo-2-thiothiazolidines from the cor- responding aromatic aldehydes and rhodanine at room temperature in 80%～93% yields within 10 to 120 min.
在室温条件下,离子液体1-正丁基-3-甲基咪唑四氟硼酸盐([bmim]BF4)与水组成的混合溶剂能有效催化一系列芳醛与罗丹宁反应,以80%～93%的产率生成相应的5-芳亚甲基-2,4-噻唑二酮。
This paper reports the preparation of the complexe of α,ω-bisrhodanine-oxoalkane with Hg(II),and their structures were identified by elemental analysis,IR,UV and 1HNMR spectra.
报道了α ,ω -双罗丹宁氧杂烷与Hg(II)形成的四个新配合物 ,其结构通过元素分析 ,IR、UV和1 HNMR光谱鉴定 ,金属含量由双硫腙法测定。
The sulphochlorophenol S spectrophometric method with high gensitivity is proposed for the determination of niobium in steel after tannic acid precipitation separation.
用丹宁酸沉淀分离干扰元素的手段和选择具有高灵敏度的显色剂氯磺酚Ｓ，以分光光度法测定钢铁中铌量。
Objective To evaluate the effects of tannic acid(TA) treatment on the physico-chemical properties of glutaraldehyde(Glut)-fixed bovine jugular vein(BJV).
目的评估丹宁酸改性处理对戊二醛固定牛颈静脉管道理化性质的影响。
In a preferred embodiment of the present invention, the tannase is recycled and in that case higher initial levels of tannase are used.
在本发明的所选用的具体操作中,丹宁酶被循环使用,因而在一开始要使用高剂量的丹宁酶。
The obtained hot tea extract is then cooled to a temperature, which make it suitable for the tannase treatment.
把获得的这种热水提取物冷却到一个适合进行丹宁酶处理的温度。
The temperature at which the treatment is carried out may, dependent on the tannase type, vary from 20 to 80 c.
处理的温度可因丹宁酶类型的不同而在20-80摄氏度之间变化。
An enzyme level ranging from about 0.5 to 500 or more tannase units (determined as hereinbefore described) per gram dry weight of tea may be used.
酶的用量为每克干茶叶用0.5-500或更多的丹宁酶单位(用如前所述的方法测定)。
Although the tannase treatment does give a certain amount of solubilisation of the tea cream constituents, the extract is still turbid at 5 c.
尽管丹宁酶的处理确能溶解一部分茶膏成分,但在5°C时,这种处理过的茶浸提物仍会浑浊。
Although in principle a good quality of tea extract is obtained by the combination of treating tea extract with tannase followed by an UF treatment,
虽然用丹宁酶及UF综合处理茶叶提取物,原则上可以得到高质量的茶叶提取物。
tannic acid
【化】鞣酸, 丹宁酸
Distribution of polypenol oxidase, cytochrome oxidase and tannin material are detected in the flower and fruit for protection.
芡花和果实中存在的多酚氧化酶和细胞色素氧化酶以及丹宁等物质,对芡花和果实有保护作用。
derived from, or resembling, tan or tannin.
从丹宁酸中提取的或类似于丹宁酸的。
Esterase isozyme analysis of five varieties of Sorghum sudanense
5个苏丹草品种酯酶同工酶比较研究
"Even amid turmoil, Stan can have inner peace."
"即使在混乱中,史丹内心依然宁静。"
caffeine-tannin complex
(茶叶的)咖啡因-丹宁络合物
Determination of Salvianolic Acid B in Xinkening Capsules by HPLC
HPLC测定心可宁胶囊中丹酚酸B的含量
Determination of Salvianolic Acid B in Rujining Capsule by HPLC
HPLC测定乳疾宁胶囊中丹酚酸B的含量
Determination of Sudan Ⅰ by Indirect Competitive Enzyme Linked Immunosorbent Assay;
苏丹红Ⅰ号酶联免疫分析方法的建立
Effects of Cryptotanshinone on Cytochrome P450 Isoforms in Rat Liver Microsomes
隐丹参酮对大鼠肝微粒体CYP酶的影响
Enzyme catalysis-spectrophotometric determination of H_2O_2 with rhodamine S
罗丹明S酶催化光度法测定过氧化氢
The endosperm of the nut owes its marked degree of astringency to the tannins it contains
坚果的胚乳由于存在丹宁，所以有显著的涩味。