响应面法优化秸秆发酵产β-葡萄糖苷酶的研究Optimization of Straw Fermentation Conditions for Production of β-Glucosidase with Response Surface Methodology
王敏;王颉;
摘要(Abstract):
为了高效利用废弃的农作物秸秆,优化康氏木霉固态发酵秸秆生产β-葡萄糖苷酶的发酵参数,首先利用Plackett-Burman试验,对影响生产β-葡萄糖苷酶的参数麸皮添加量、(NH4)2SO4添加量、培养温度、培养时间、料水比、装料比、浸提液p H值进行了主要影响因子的筛选;然后再利用Center Composite Design响应面分析对产酶参数进行了优化。结果表明:培养温度和培养时间是影响固态发酵生产β-葡萄糖苷酶的主要因素;经CCD优化后,得到产酶最适条件为培养时间6.6 d、培养温度27℃,该条件下β-葡萄糖苷酶活性为77.68 IU/m L。验证试验证实,预测回归方程的预测值与试验值之间具有较高的拟合度。本研究结果可为农业秸秆资源的再利用和纤维素酶的工业化生产提供科学依据。
关键词(KeyWords): β-葡萄糖苷酶;Plackett-Burman;Center Composite Design;康氏木霉;秸秆
基金项目(Foundation): 河北省科技支撑计划项目(13223813);; 衡水市科技计划支撑项目(13065-2)
作者(Author): 王敏;王颉;
Email:
DOI: 10.16318/j.cnki.hbnykx.2015.01.022
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