This study aimed to enhance acid production rate and yield of citrus vinegar, and improve the quality of liquid fermented with fruit juice. [ Method] The saccharification process of citrus vinegar was investigated pre...This study aimed to enhance acid production rate and yield of citrus vinegar, and improve the quality of liquid fermented with fruit juice. [ Method] The saccharification process of citrus vinegar was investigated preliminarily with fruit-grain mixed fermentation method using liquor starters as saccharif- erous agents. [Result] The results indicated that the optimal glutinous rice saccharification conditions were as follows： fruit-grain ratio 3： 1, Aspergillus niger- Monascus purpureus ratio 3： 1, saccharifieafion temperature 60℃, and saccharification time 2.5 h. Under the optimized saccharification conditions, reducing sugar content in saceharified glutinous rice reached 146.43 mg/ml; after fermentation, alcohol content in fermentation broth was 6%, amino nitrogen content was 0.44 mg/ml, and acid yield was 3.1 g/L. [ Conclusion] Citrus vinegar brewed based on the optimized technological conditions exhibited better sensory and physico-chemical properties than that brewed with pure juice.展开更多
以紫薯和杏鲍菇为主要原材料,通过果酒酵母和醋化醋杆菌混合发酵生产复合果醋,采用单因素试验,正交试验的方法,优化紫薯和杏鲍菇复合果醋混菌发酵的制备工艺。优化得到的配方及制备工艺条件为:紫薯与杏鲍菇比例为2∶1,白砂糖添加量为15%...以紫薯和杏鲍菇为主要原材料,通过果酒酵母和醋化醋杆菌混合发酵生产复合果醋,采用单因素试验,正交试验的方法,优化紫薯和杏鲍菇复合果醋混菌发酵的制备工艺。优化得到的配方及制备工艺条件为:紫薯与杏鲍菇比例为2∶1,白砂糖添加量为15%,pH为4.0,果酒酵母接种量为2.5%,醋化醋杆菌接种量为12%,种龄20 h,接种间隔0 h,装液量40 m L/250 m L,32℃,在此条件下产酸在第7天达到最大,为43.20 g/L,酿制出的紫薯杏鲍菇复合果醋澄清现粉红色,醋味浓郁,营养丰富,具有紫薯和杏鲍菇清香味。展开更多
基金Supported by Project for Agro-scientific Research in the Public Interest of Science and Technology Department of Zhejiang Province(2012C22092)
文摘This study aimed to enhance acid production rate and yield of citrus vinegar, and improve the quality of liquid fermented with fruit juice. [ Method] The saccharification process of citrus vinegar was investigated preliminarily with fruit-grain mixed fermentation method using liquor starters as saccharif- erous agents. [Result] The results indicated that the optimal glutinous rice saccharification conditions were as follows： fruit-grain ratio 3： 1, Aspergillus niger- Monascus purpureus ratio 3： 1, saccharifieafion temperature 60℃, and saccharification time 2.5 h. Under the optimized saccharification conditions, reducing sugar content in saceharified glutinous rice reached 146.43 mg/ml; after fermentation, alcohol content in fermentation broth was 6%, amino nitrogen content was 0.44 mg/ml, and acid yield was 3.1 g/L. [ Conclusion] Citrus vinegar brewed based on the optimized technological conditions exhibited better sensory and physico-chemical properties than that brewed with pure juice.
文摘以紫薯和杏鲍菇为主要原材料,通过果酒酵母和醋化醋杆菌混合发酵生产复合果醋,采用单因素试验,正交试验的方法,优化紫薯和杏鲍菇复合果醋混菌发酵的制备工艺。优化得到的配方及制备工艺条件为:紫薯与杏鲍菇比例为2∶1,白砂糖添加量为15%,pH为4.0,果酒酵母接种量为2.5%,醋化醋杆菌接种量为12%,种龄20 h,接种间隔0 h,装液量40 m L/250 m L,32℃,在此条件下产酸在第7天达到最大,为43.20 g/L,酿制出的紫薯杏鲍菇复合果醋澄清现粉红色,醋味浓郁,营养丰富,具有紫薯和杏鲍菇清香味。
