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Product details
名称
过氧化氢酶 来源于黑曲霉
别名
H2O2氧化还原酶
英文别名
H2O2 oxidoreductase | CAT | catR
货号
np226930-5g
包装规格
5g
级别
工业级
浓度
≥200 U/mg powder
产品介绍
过氧化氢酶是由黑曲霉优良菌种(Aspergillus niger)经深层发酵精制提炼而成。应用于纺织、啤酒、酶法葡萄糖酸钠、制浆造纸、食品及乳品加工等去除过氧化氢的工业。 原理 过氧化氢酶以过氧化氢为专一底物,通过催化一对电子的转移,最终将其降解为水和氧气。 产品特性 1.温度范围:有效温度范围20-60℃,最适温度范围40-55℃。 2.pH值范围:有效pH范围5.0-9.5,最适pH值范围6.0-8.0。 3.金属离子对酶活性的影响:Hg2+、Ni2+、Cu2+ 、Fe3+对过氧化氢酶有抑制作用;低浓度Al3+、Zn2+、Mg2+、Ca2+对酶活性没有影响。 应用方法 1.在纺织行业,该酶可去除漂白后残留的过氧化氢,缩短工艺、节能、节水,降低对环境的污染。推荐加量0.3-5mL/L(酶活力以50000u/mL计,下同),适宜反应条件下处理10-30min。 2.食品及生鲜牛奶保鲜行业中,该酶用于除去残留的过氧化氢,推荐加量50-150mL/t鲜原料,30-45℃保温10-30min,不另调节pH。 3.啤酒储存及葡萄糖酸钠工业,该酶须与葡萄糖氧化酶配合使用,用于除去啤酒中氧气和将葡萄糖转化为葡萄糖酸的目的。在啤酒工业中,该酶的加量为20-100mL/t啤酒,室温条件储存。在葡萄糖酸钠工业中,该酶的加量2000-6000mL/t干物质,浓度30-35%,pH调节5.5左右,30-55℃转化30小时左右。 4.制浆和造纸工业,该酶用于除去漂白纸浆后残留的过氧化氢。推荐加量100-300mL/t绝干浆,40-60℃处理30min左右,不另调节pH。 储存 本品为生物活性物质,高温、强酸、强碱会引起酶失活。因此在运输和储存过程中,应避免日光曝晒。仓库应保持清洁、阴凉和干燥。
生化机理
Occurs in almost all aerobically respiring organisms and serves to protect cells from the toxic effects of hydrogen peroxide.
生物活性
≥200 U/mg powder
来源
天然
Reaxy-Rn
1101972
种属
黑曲霉(Aspergillus niger)
Safety
「No Dangerous Attributes」
Related
「No upstream and downstream information yet」
Technical Documents
「No technical documents」
Articles
「No related articles yet」
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Research chemical 5g

Research chemical 5g; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 5g.

item number:np226930-5g
Product model:5g
level: 5g
Lead Time:30days
sold 870 Items
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