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OALib Journal期刊
ISSN: 2333-9721
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耐高温酵母高浓度发酵生产燃料乙醇工艺优化
DOI: 10.3724/SP.J.1145.2011.00311, PP. 311-316
Keywords: 酵母,耐高温,燃料乙醇,高浓度,响应面
Abstract:
采用两水平部分因子设计（23fractionalfactorial），选取发酵温度、接种量、初始糖浓度为自变量考察因素，以最终发酵乙醇浓度和9h生物量浓度为响应值，考察耐高温高浓度酵母的燃料乙醇发酵能力，并对实验数据进行二次模型变异分析（analysisofvariance，anova），建立了三元二次方程数学模型.对方程求解得到，发酵温度为36.9℃，初始发酵糖浓度为280g/l，接种量为9.4%时，最终的燃料乙醇浓度为131.0g/l.验证实验结果显示，该酵母在37℃，初始发酵糖浓度为280g/l，接种量为9.4%时，在48h发酵得到129.9g/l的乙醇，指标存在一定的先进性，证明了模型可靠有效.图2表3参13
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