二肽

Quadratic regression orthogonal rotational combing design was used to determine the optimal enzymatic hydrolysis process. Anthrone colorimetry's method was used to measure the carbohydrates content, pH-stat method to measure the degree of hydrolysis and Kjeldahl's method to measure the recovery of protein.

采用二次回归正交旋转组合设计优化直接酶解米糠制备短肽的工艺条件，其中总糖含量测定采用蒽酮比色法，水解度(degree of hydrolysis， DH)采用pH-stat法，蛋白质回收率采用凯氏定氮法。

The plots of ln K′ of peptide 1 versus φ are well fitted with quadratic equations when isocratically eluted by aquo _ acetonitrile mobile phases.

当以乙腈为流动相测定肽1的lnK′随φ变化关系时，所得结果显示lnK′与φ呈现良好的二次曲线关系。

The results showed that aspartic acid can greatly improve the selectivity of titanium dioxide for phosphopeptide enrichment.

结果表明，天冬氨酸可以有效地提高二氧化钛对磷酸肽富集的选择性。

The carboxyl groups of QDES were used to couple the free amino groups of EAH Sepharose 4B with the carbodiimide coupling method, and immobilized density was 5μmol/ml.

通过碳二亚胺反应将四肽配基QDES固定在商品介质EAH Sepharose 4B上制备出了配基固定化密度为5μmol/ml的亲和吸附介质，并利用亲和色谱柱考察了其吸附蛋白质特性。

Carnosine was added to the drinking and addition dose atⅠto Ⅳgroups were 0,20,40 and 60 mg/L respectively for 6 weeks.6 broilers from each group were randomly selected to pick the blood respectively at the each weekend.

于每周末每组随机抽取6只鸡采血，测定血清中超氧化物歧化酶、过氧化氢酶、谷胱甘肽过氧化物酶的活力和丙二醛的含量。

This enzyme catalyses the conversion of angiotensin I to angiotensin II in the blood plasma and endothelia and prevents the breakdown of bradykinin.

这种酶催化的血管紧张素一血管紧张素血液中的血浆和内皮二，防止故障的激肽转换。

The purpose of this paper was to study the effect of Ginkgo biloba Composita on liver collagen fibrosis. The 86 patients were suffering from chronic persistant and active hepatitis B with early fibrosis confirmed by liver biopsy.

应用复方银杏叶冲剂治疗86例慢性乙型迁延性和活动性肝炎早期纤维化患者，疗程3个月，以血清层粘连蛋白、血清Ⅲ型前胶原肽、超氧化物歧化酶、丙二醛及部分光、电镜活检为指标。

CySeCD exhibits better GPX activity than 6-AnSeCD in the reduction of H2O2 and cumenyl hydroperoxide by glutathione, respectively.

采用双酶偶联法测定GPX的活力结果显示，6A，6A'-二环己胺－6B，6B'-二硒桥联－β-环糊精(6-CySeCD)催化谷胱甘肽还原H2O2和枯烯H2O2的活力均比6-AnSeCD的高。

Recent development of coupling reagents and methods for hindered peptide containing N-alkylated or C_α,C_α-disubstituted amino acid residues is reviewed.

本文综述了合成含N-烷基氨基酸或α，α-二取代氨基酸位阻肽的偶合试剂研究新进展，并对这些新的偶合试剂及偶合方法的优点和不足予以评述。

The synthesis of sterically hindered peptides containing N-alkylated or 〓disubstituted amino acid residues is being a challenge, which results in difficultcondensation using the usual DCC/HOBt or HOBt-derived coupling reagents.

多肽合成的一个主要难题是富含N-烷基化氨基酸或C〓二烷基化氨基酸的肽链的合成，采用BOP或HBTU等常规缩合剂往往不能得到令人满意的结果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。