摘要
以高直链玉米淀粉为原料,研究压热-冷却循环结合酸解法制备抗性淀粉的最佳工艺条件。通过单因素实验和正交实验探讨了压热-冷却循环过程中淀粉溶液浓度、压热温度、压热时间、循环次数以及酸解处理过程中酸的种类、酸的浓度、酸解时间对抗性淀粉得率的影响。结果表明,在淀粉溶液浓度为30%、压热温度125℃、压热时间45 min条件下,经过2次压热-冷却循环,然后0.15 mol/L柠檬酸水解处理12 h,在此条件下抗性淀粉得率可达39.27%。
The resistant starch was prepared with the High amylose corn starch by autoclaving-cooling cycles combined with acids hydrolysis treatment.The effects of concentration of starch solution,autoclaved temperature,autoclaved time and times of autoclaved-cooling cycles on the content of RS were studied in the autoclaved treatment.The type,concentration and treatment time of acids were also studied in the acid hydrolysis process.The results showed that the optimum conditions is： 30% starch solution was autoclaved at 125℃ for 45min,after repeated 2 times,0.15mol/L citric acid hydrolysised for 12h.The yield of resistant starch is up to 39.27%.
出处
《粮食科技与经济》
2011年第6期38-42,共5页
Food Science And Technology And Economy
关键词
抗性淀粉
压热-冷却循环
酸解
工艺优化
resistant starch
autoclaving-cooling
acid hydrolysis
optimization
