半乳糖酶

The final acidity of yogurt ferment by the two bacteria was 57.65 T and 54.43 T respectively.Because the -galactosidase produce by starter is a endoenzyme it must abstract after the cell wall broken. This experiment compare the different method of cell wall broken and research on the influence of temperature and time on condition of cell wall broken.

由于发酵剂菌种产生的糖代谢酶，β-半乳糖苷酶是胞内酶，通过对渗透压破壁和不同浓度的氯仿和甲苯两种有机溶剂破壁方法的比较，以及破壁所需温度和时间的研究，确定采用5％氯仿，45℃保温8～12h对菌体进行破壁，β-半乳糖苷酶的活力采用AOAC提出的标准进行测定。

The mark gene expression in the veins was studied with X-Gal stain and activities of β-galactase were measured.

经X-Gal(5-溴-4-氯-3-吲哚-D-半乳糖苷)染色检测静脉中标记基因的表达，测定β-半乳糖酶的活性。

In our experiments, when the opacity of lens exceed Ⅳ degrees, the treatment effect of medicine was not obviously. Analyzing the examined results of AR, SOD and GSH-px in rat lens cortex and nuclear shows that Zhangming drops can inhibit the activity of AR obviously and prevent the translation of galactose to galactose alcohol. So it can prevent the deposit of galactose in the fibrocyte of lens and the increase of lens's osmosis, then prevent the hydration of lens.

通过对大鼠半乳糖性白内障晶体皮质和核内醛糖还原酶、超氧化物歧化酶和谷胱苷肽过氧化物酶的检测结果分析表明，障明滴眼液能明显抑制AR的活性，防止半乳糖向半乳糖醇的转化，从而防止半乳糖在晶体纤维细胞内的堆积，阻止其渗透性的增高，防止晶体的水化。

The obtaining of the recombinase gene can be used for gene alternation to obtain a novel Beta-galactoside synthase, thereby essentially improving the composing efficiency of a galactoside compound.

酶基因的获得，可用于基因改造获得新的β-半乳糖苷合成酶，从根本上提高半乳糖苷化合物的合成效率。

D-galactoside galactohydrolase (EC3.2.1.23) is usually named lactase which can hydrolyze lactose into galactose and glucose, and also can transfer galactoside.

半乳糖苷酶(B-D-半乳糖苷半乳糖水解酶，β-D-galactoside galactohydrolase，EC3.2.1.23)通常被称为乳糖酶，能将乳糖水解为半乳糖和葡萄糖，并具有半乳糖苷的转移作用。

Ribose/galactose/methyl galactoside importing ATP-binding protein 1 was participated in photosynthates transportation from leaf to grain in early and mid-stages.

分析结果表明，核糖／半乳糖／甲基半乳糖苷运输ATP结合蛋白l在灌浆前中期参与物质向籽粒的运输；生长素响应蛋内IAA27通过调节ATPase活性影响叶片物质运输；N-乙酰谷氨酸半醛脱氢酶在灌浆末期参与叶片的多胺代谢，延缓叶片衰老；谷胱甘肽S-转移酶和Cu/Zn-超氧化物歧化酶在籽粒灌浆后期的植物解毒和防御活性氧伤害中起着重要作用。

Galactosidase or melibiase is the enzyme of hydrolysising α-galactosis bonds, it is a exoglycosidase exist in nature widely.

半乳糖苷酶也称蜜二糖酶，是催化α-半乳糖苷键水解的酶类，是广泛存在于自然界的一种外切糖苷酶。

Lactose, melibiose, melitriose and galactose had inhibition against the activity but little effect of glucose.

乳糖、蜜二糖、棉子糖和半乳糖对酶活有抑制作用，葡萄糖对酶活几乎没有影响。

It is hydrolysed into its constituent monosaccharides , glucose and galactose, by the enzyme β-galactosidase.

乳糖可被β、半乳糖苷酶水解成单糖——葡萄糖和半乳糖。

How does lactose bring about the induction of synthesis of β-galactosidase, permease, and transacetylase Why does this event not occur when glucose is also in the medium

乳糖如何诱导β-半乳糖苷酶、透过酶、转乙酰基酶合成的？为什么在葡萄糖存在的情况下，这一生物学事件不能发生？

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。