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α-葡聚糖酶发酵工艺及其酶活性影响因素研究

Food Science(2013)

Cited 23|Views30
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Abstract
对细丽毛壳液体发酵产α-葡聚糖酶的主要影响因子,包括发酵初始pH值、装液量、接种量、发酵时间等进行研究,并考察pH值、温度、作用时间对α-葡聚糖酶酶活力的影响。结果表明:最佳发酵条件为发酵pH5.5、装液量20mL/250mL、接种量3%、发酵时间92h,菌株酶活力由原来的79.0U/mL提高到231.5U/mL,提高了193%。α-葡聚糖酶的酶活力在pH5.5、温度60℃、作用时间10min时最高。
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Key words
Chaetomium gracile,α-dextranase,enzyme activity,fermentation
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