赖氨酸

Organization: Institute of Chemical Engineering and Environment, Qingdao UniversityAbstract: A new Schiff base and its cupric complex of L-lysine and anisaldehyde were synthesized by stepwise synthesis method in anhydrous system, with basic essential amino acid L-lysine and natural product anisaldehyde as precursor.

摘 要：以碱性必需氨基酸L-赖氨酸和天然产物茴香醛为前体物，采用分步合成法在无水体系中制备了L-赖氨酸缩茴香醛单席夫碱及其铜配合物。

Development period of the parasitoid pupa from the 5th instar larva fed on MSB was significantly longer. Length of cocoon of MSB treatment was significantly shorter than the control. However, no obvious differences were detected in the development periods of egg to larva, cocoon mass size, wasp emergence rate, sex ratio, longevity and forewing length of wasp between KMD1 and the control. 3. Amino acid content in the haemolymph of SSB after fed with transgenic rice Although there were no changes on the components of amino acids in the haemolymph of SSB after fed with two transgenic rice lines, there were some changes on relative contents of amino acids.

取食KMD1 36h后0天，20种氨基酸中除天门冬酰胺、丝氨酸、苏氨酸和甲硫氨酸外，其它16种氨基酸的含量都高于对照，其中组氨酸、甘氨酸、苯丙氨酸、异亮氨酸、赖氨酸差异达显著水平，谷氨酰胺、脯氨酸差异达极显著水平，与氨基酸总量表现一致的变化趋势；取食KMD1后1天，除天门冬酰胺、谷氨酰胺和赖氨酸高于对照外，其它17种氨基酸均较对照低，但仅丝氨酸、苏氨酸和色氨酸与对照差异显著；取食KMD1后3天，绝大多数氨基酸含量的变化与取食KMD1后0天的趋势一致，除丙氨酸和色氨酸比对照稍低，其它18种氨基酸均高于对照，其中精氨酸、缬氨酸差异显著，丝氨酸差异达极显著。

Production of mitogen-contamination free alginates with variable ratios of mannuronic acid to guluronic acid by free flow electrophoresis.

影响微囊膜通透性的因素有：(1)多聚赖氨酸的相对分子质量；(2)多聚赖氨酸的浓度；(3)海藻酸钠与多聚赖氨酸相互作用的时间。

The amount of lysine adsorbed decreased strongly as more sodium chloride was added to the initial lysine solution.

数额减少赖氨酸吸附强烈随着越来越多的氯化钠添加到最初的赖氨酸的解决办法。

Four beef catties with rumen, duodenum and ileum cannulars were used in a 4×4 Latin square experiment design.

通过瘤胃补充RPLys及十二指肠灌注赖氨酸研究了赖氨酸的保护和利用效果。

The reactivity of the MAP made by linear lysine-tree scaffolding is better than the reactivity of the MAP made by branchy lysine-tree scaffolding.

以线形多聚赖氨酸作为支架所合成的八分支肽的反应活性高于以分支状多聚赖氨酸作为支架所合成的八分支肽。

After 2002, China's lysine imports fell sharply in response to rising domestic output.

2002年后，相应于中国国内赖氨酸产量的增加，中国的赖氨酸进口量急剧下降。

The results showed that supplying lysine coated with the polyoxylateⅣand hydrogenated vegetable tallow in the rumen could significantly improve the concentration of plasma free lysine in the jugular vein (11.18ug/ml)(P＜0.05), which is about 66.61% of that with duodenal infusions of lysine(16.97ug/ml). The concentrations of free lysine were 7.31ug/ml and 8.00ug/ml with the basal diets and supplementing of Lys in the rumen respectively.

选用4头瘘管肉牛，采用4×4拉丁方设计，结果表明，瘤胃补充用丙烯酸树脂Ⅳ号和氢化植物油保护的赖氨酸26g(15g赖氨酸)，可显著提高肉牛血浆游离赖氨酸浓度(11.18ug／ml)，为十二指肠灌注15g赖氨酸(16.97ug／ml)的66.61％，基础日粮和瘤胃补充15g赖氨酸血浆游离赖氨酸浓度分别为7.31ug／ml，8.00ug／ml。

Results Five hereditarily stable strains with high lysine production were obtained by four cycles of genome shuffling. A high lysine producing strain, F4-36, was obtained, which produced 16.95 g/dL lysine, 37.1% higher than that of the starting strain.

通过四轮基因组重排成功选育出了5株遗传稳定的高产赖氨酸菌株，其中1株重排菌株赖氨酸产量达到16.95 g/dL，比原始菌株Corynebacterium pekinense 1赖氨酸产量提高了37.14%，比亲本菌株赖氨酸产量提高了17.46％~31.19%。

The effects of solution\'s pH value, mol ratio between phenyl aldehyde and L-Arginine, concentrations of sodium chloride, ammonia chloride andL-Lystine, initial concentration of L-Arginine on precipitation rate of a -tolylene arginine were investigated, the results indicated that phenyl aldehyde precipitation method\'s appropriate pH value was higher than 11, suitable mol ratio between phenyl aldehyde and L-Arginine was 1.25, initial concentration of L-Arginine was must higher than 15g/L, sodium chloride had little effect on precipitation rate, on the contrary, ammonia chloride and L-Lystine had great effect on it, both of them must be eliminated; At the same time, adsorption isotherm at 25 C of L-Lystine on anion exchange resin A was measured, the result showed that the maximal equilibrium adsorbance was 30mg/g, the influences of solution\'s pH value, temperature, concentration of chloride ion on adsorption of L-Lystine by anion exchange resin A were also studied, the results indicated that appropriate operational pH value was 0.5 0.2, the effect of temperature on adsorption ratio was little, process could be operated at room temperature, the concentration of chloride ion must be eliminated.

考察了溶液pH值、苯甲醛与L-精氨酸摩尔比、氯化钠与氯化铵浓度、L-赖氨酸浓度、L-精氨酸初始浓度对苯甲醛沉淀L-精氨酸的影响，结果表明，沉淀反应的适宜pH值大于11，苯甲醛与L-精氨酸的适宜摩尔比为1.25，(来源：Aa6BC论文网www.abclunwen.com)L-精氨酸适宜的初始浓度在15g/L以上，氯化钠的存在对沉淀率基本上没有影响，而氯化铵和L-赖氨酸的存在使沉淀率下降；同时测定了25℃时阴离子交换树脂A吸附L-赖氨酸的吸附等温线，表明其最大平衡吸附量为30mg/g，考察了溶液pH值、温度、氯离子浓度对阴离子交换树脂A吸附脱除L-赖氨酸的影响，结果显示从L-精氨酸和L-赖氨酸混合液中吸附分离出L-赖氨酸的适宜pH值为10.5±0.2，温度对L-赖氨酸吸附率影响不大，吸附过程可在室温下进行，氯离子的存在使L-赖氨酸的吸附率降低。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。