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食品研究与开发:2022,43(13):172-179
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野生猕猴桃果醋发酵过程分析及动力学模型构建
(1.河南质量工程职业学院,河南 平顶山 467000;2.河南农业大学,河南 郑州 450002)
Fermentation Process Analysis and Kinetic Model Construction of Wild Kiwi Fruit Vinegar
(1.Henan Quality Polytechnic,Pingdingshan 467000,Henan,China;2.Henan Agricultural University,Zhengzhou 450002,Henan,China)
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投稿时间:2021-05-17    
中文摘要: 以野生猕猴桃带渣发酵果酒为原料,加入醋酸菌发酵生产野生猕猴桃果醋,将整个发酵过程分为8个不同阶段,研究其菌体生长量(OD值)、底物消耗量(乙醇)、产物生成量(乙酸)和发酵过程主要风味组分含量变化规律,并建立发酵动力学模型。结果显示:发酵过程菌体生长量(OD值)Dose Resp模型拟合效果最佳,拟合系数R2为0.995 04;底物消耗量(乙醇)Boltzmann模型拟合效果最佳,拟合系数R2为0.997 38;产物生成量(乙酸)SGompertz模型拟合效果最佳,拟合系数R2为0.999 80;发酵过程中主要挥发性风味组分19种,含量前四的组分分别为乙酸乙酯、乙酸异戊酯、乙酸异丁酯和乙酸苯乙酯,以其含量变化构建动力学方程,拟合系数均在0.99以上,可以描述其在发酵过程中变化规律。
中文关键词: 野生猕猴桃  发酵  果醋  动力学  过程分析
Abstract:Wild kiwi fruit wine with residues was fermented to wild kiwi fruit vinegar with acetic acid bacteria.The fermentation process of fruit vinegar was divided into eight stages.The changes in bacterial growth(OD value),substrate consumption(ethanol),product generation(acetic acid),and the main flavor components in the fermentation process were surveyed,and the fermentation kinetic model was established.The results showed that during the fermentation process,the Dose Resp model of bacterial growth(OD value)displayed the best fitting effect with the fitting coefficient R2of 0.995 04;the Boltzmann model of substrate consumption(ethanol)showed the best fitting effect with the fitting coefficient R2of 0.997 38;the SGompertz model of product generation(acetic acid)exhibited the best fitting effect with the fitting coefficient R2of 0.999 80.There were 19 main volatile flavor components in the fermentation process,and the top four components were ethyl acetate,isoamyl acetate,isobutyl acetate,and phenethyl acetate.The kinetic equations were constructed based on their content changes with fitting coefficients above 0.99,which could describe their changes during the fermentation process.
文章编号:202213025     中图分类号:    文献标志码:
基金项目:河南省高等学校重点科研项目计划(20B550007)
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