Enzymatic Treatment of Wool

Three proteases were applied to treatments of wool. The shrinkage, dyeing behavior, some physical and mechanical properties of treated wool were studied. Peroxymonosulfate(PMS) and lipase were used to pretreat wool before the treatment of it by protease. The results show that the shrink resistance of wool fabric is not obtained when it is treated only by the protease, but it is remarkably improved when the wool fabric is treated first by PMS or a lipase afterwards by protease. The rate of dyeing is increased when the wool is treated by protease or combination of oxidant/ lipase and protease. Whiteness, luster and softness of treated wool are improved, while the strength and elasticity are reduced.     

对酶特性实验方法的改进

改进后的酶特性实验方法，设计更合理，结果更准确。     

基于神经网络的鹿角盘蛋白水解模型

研究了底物浓度、酶添加量、温度、时间、pH值对鹿角盘酶水解的影响，并利用神经网络建立鹿角盘酶解过程的数学模型。结果表明，所建立的模型能很好地描述鹿角盘酶水解过程，为有限水解提供了基础。     

新型手性抗肿瘤药物德氮吡格（TNBG）体外抗肿瘤活性初步研究

目的观察手性旋光异构体德氮吡格（TNBG）对6株人体肿瘤细胞增殖的影响，初步探讨其抗肿瘤作用机制。方法运用MTT法检测手性TNBG对6株肿瘤细胞生长抑制情况；油红O染色法观察QGY-7701细胞中脂质聚集情况；流式细胞仪检测手性TNBG对人肝癌细胞株QGY-7701细胞周期分布和凋亡影响。结果手性TNBG能不同程度抑制肿瘤细胞增殖，且呈剂量依赖性；油红O染色提取显示QGY-7701细胞内脂质量与给药剂量呈正相关；流式细胞仪检测到有s期细胞增加，并且手性TNBG还能诱导QGY-7701细胞发生凋亡。结论手性TNBG在体外具有良好的抗肿瘤活性，其抗肿瘤作用机制可能是通过促使肿瘤细胞产生脂质聚集，抑制肿瘤细胞增殖、诱导其凋亡从而达到抗肿瘤效应。总体看（＋）TNBG体外抗肿瘤活性比（-）TNBG更强。     

超临界CO2中脂肪酶催化反应的研究

研究了以超临界二氧化碳为介质，假丝酵母脂肪酶催化月桂酸和正丁醇酯化的反应过程中，压力、温度、酶含水量、底物浓度和种类对于反应的影响。使用了陈惠晴等，于《清华大学学报》１９９９年第６期第３１至３４页所述的方法，研究发现，压力升高使酶中的水分减少，导致酶活力的下降。升高压力会使反应底物的溶解度增加，使反应速率提高。在３４℃～６０℃范围内，温度的升高，使反应速率上升。酶中含水质量分数为４０％时，酶活性最高。正丁醇的浓度大于１００ｍｍｏｌＬ－１，对酶产生抑制；月桂酸浓度小于４０ｍｍｏｌＬ－１时，没有发现对反应的抑制。醇的分子体积越大，反应速率越小。醇的极性减小，反应速率增大。     

电位滴定法测定青霉素G酰胺酶的酶活力

采用电位滴定法测定青毒素G酰胺酶的酶活力．     

槟榔植株不同器官营养组分含量测定

对槟榔植株不同器官的营养组分含量测定，结果表明，槟榔植株不同器官的营养组分和种类齐全，其所含的１８种氨基酸的组分总量变化趋势是，生殖器官（１８４．３５μｇ／（ｍｇ·ＤＷ），占总量的５４．９８％）＞营养器官（１５０．９７μｇ／（ｍｇ·ＤＷ），占总量的４５．０２％），它们在量上的差异显著，为８１．８９％，其幼果＞花梗＞根系＞花朵；而１１种矿质元素的总含量则以花朵＞幼果＞叶片，元素之间的量值差异程度以Ｍｇ＞Ｐ＞Ｋ＞Ｍｎ＞Ｆｅ＞Ａｌ＞Ｚｎ＞Ｂ＞Ｃｕ＞Ｍｏ＞Ｎｉ；由于槟榔的生境不同，营养物质中的三大营养素含量水平为：屯昌乌坡（５８．１０％）＞陵水提蒙（５７．７９％）＞乐东黄流（５５．２９％），量值差异为０．３１％～２．８１％，维生素类与胡萝卜素的含量变化不大．     

Oscillatory change of SR-protein kinase activities during oocyte maturation meiosis in fish

The SR-protein kinase activity was analyzed and the cytological changes were observed during oocyte maturation in bisexual transparent color crucian carp ( Carassius auratus color variety) . The results revealed that the SR-protein kinase activity was sensitive to the artificially induced spawning hormones, and the change of oscillatory activity was similar to that of the maturation-promoting factor (MPF) kinase that regulates meiotic cell cycle in fish.     

Enzymatic processing of pheromones and pheromone analogs

Summary Pheromone perception requires rapid enzymatic degradation of the active chemical signal in the sensory hairs. Three insects are used to illustrate chemical approaches to studying the degradation of pheromones by antennal enzymes. First, hydrolysis of acetate and haloacetate esters is examined in the diamondback moth,Plutella xylostella. Second, aldehyde oxidation and the selective inhibition of the oxidase and dehydrogenase activities are described for the tobacco budworm moth,Heliothis virescens. Finally, a stereochemical analysis of the epoxide-hydrase catalyzed addition of a water molecule to the oxirane ring of disparlure is described for the gypsy moth,Lymantria dispar.     

喷雾法制备固定化酶载体--磁性聚丙烯腈微球

介绍了一种制备磁性聚丙烯腈微球的方法。将纳米磁粉均匀分散于聚丙烯腈的N，N-二甲基甲酰胺溶液中，用喷协和法制备了具有超顺磁性的聚丙烯腈微球，并对微球制备过程中的影响因素进行了综合考察。得到了粒度分布在1.0μm-1.5μm、磁含量约为15%的磁性聚丙烯腈微球，其最佳制备条件为：以N，N-二甲基甲酰胺为溶剂，CPAN=1g/L,T=180℃，n=30000r/min，V=2mL/s,Cmagnetic fluid=2g/L。