Beer fermentation process is a complex biochemical reaction process.It is the most important to control temperature of the wort in fermentation tank in accordance with the beer fermentation temperature curve so as to ...Beer fermentation process is a complex biochemical reaction process.It is the most important to control temperature of the wort in fermentation tank in accordance with the beer fermentation temperature curve so as to ensure the completion of fermentation.The controlled object is characterized by large inertia,long time delay and mutual coupling of three temperature areas.Based on this,a temperature control method for beer fermentation system is designed.Using digital incremental proportion integration differentiation （PID） control algorithm,the controlled quantity is transmitted to the controlled object after diagonal matrix decoupling.This simulation system can be completed in laboratory using VB and Kingview software,so it has the features of good security and low cost.It is very suitable for experimental teaching.展开更多
将本实验室保藏的酵母菌株ZAU1 进行分离得到了若干菌株,对其中的9 个菌株进行了发酵度、双乙酰还原能力、凝聚性、糖发酵能力及热死灭温度的研究。发现其中有一菌株且发酵力强,双乙酰还原速度快、凝聚力适中。于是对该酵母菌进行了生...将本实验室保藏的酵母菌株ZAU1 进行分离得到了若干菌株,对其中的9 个菌株进行了发酵度、双乙酰还原能力、凝聚性、糖发酵能力及热死灭温度的研究。发现其中有一菌株且发酵力强,双乙酰还原速度快、凝聚力适中。于是对该酵母菌进行了生产性能试验。试验中,每天降糖速度2 °Bx 左右,发酵7 d 后,双乙酰降至0.04 m g/L。发酵过程中双乙酰峰值最高仅0.15 m g/L,外观发酵度达 84.1% 。用该酵母生产出的啤酒口味纯正,酒花香气突出,有爽口的苦味和杀口感,适合消费者口味。展开更多
基金Shandong Province Department of Education Science and Technology Program(No.J05C11)
文摘Beer fermentation process is a complex biochemical reaction process.It is the most important to control temperature of the wort in fermentation tank in accordance with the beer fermentation temperature curve so as to ensure the completion of fermentation.The controlled object is characterized by large inertia,long time delay and mutual coupling of three temperature areas.Based on this,a temperature control method for beer fermentation system is designed.Using digital incremental proportion integration differentiation （PID） control algorithm,the controlled quantity is transmitted to the controlled object after diagonal matrix decoupling.This simulation system can be completed in laboratory using VB and Kingview software,so it has the features of good security and low cost.It is very suitable for experimental teaching.
文摘将本实验室保藏的酵母菌株ZAU1 进行分离得到了若干菌株,对其中的9 个菌株进行了发酵度、双乙酰还原能力、凝聚性、糖发酵能力及热死灭温度的研究。发现其中有一菌株且发酵力强,双乙酰还原速度快、凝聚力适中。于是对该酵母菌进行了生产性能试验。试验中,每天降糖速度2 °Bx 左右,发酵7 d 后,双乙酰降至0.04 m g/L。发酵过程中双乙酰峰值最高仅0.15 m g/L,外观发酵度达 84.1% 。用该酵母生产出的啤酒口味纯正,酒花香气突出,有爽口的苦味和杀口感,适合消费者口味。
