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投稿时间:2017-07-26
投稿时间:2017-07-26
中文摘要: 研究酸性电位水处理对马铃薯淀粉、红薯淀粉、玉米淀粉的物理、热力学及流变学等性质的影响。结果表明:(1)马铃薯淀粉、红薯淀粉和玉米淀粉的溶解度分别增加107%、139.7%和73%,膨润力分别增加11.65%、7.81%和8.72%,马铃薯淀粉与红薯淀粉的凝沉值分别增加35.2%、9.8%、而玉米淀粉的凝沉值降低6.07%,马铃薯与红薯淀粉的黏度分别降低74.2%、11.9%,而玉米淀粉的黏度增加2.01%;(2)差示扫描量热仪(DSC)测定结果表明马铃薯、红薯、玉米淀粉的起始糊化温度分别提高了17.8%、27.7%、42.8%,而热焓分别降低了31.7%、83.7%、42.8%;(3)酸性电位水处理影响淀粉的流变学性质,马铃薯、红薯淀粉的黏弹性模量增大;而玉米淀粉减小。
Abstract:Effects of electrolyzed-oxidizing water (EOW)on physical thermodynamic and rheological properties of potato starch(PS),sweet potato starch(SPS)and corn starch(CS)were evluated.Results showed that:(1)solubility of PS,SPS,CS increased 107%,139.7%and 73%respectively;swelling power of PS,SPS,CS increased 11.65%,7.81%and 8.72%respectively;retrogradation value of PS and SPS increased 35.2%and 9.8%respectively,and retrogradation value of CS decreased 6.07%;viscosity of PS and SPS decreased 74.2%and 11.9%respectively,and viscosity of CS increased 2.01%.(2)Measured results of Differential ScanningCalorimetry(DSC)showedthat:initialgelatinizationtemperatureofPS,SPSandCSincreased17.8%,27.7%and 42.8%respectively,and enthalpy of PS,SPS and CS decreased 31.7%,83.7%and 42.8%respectively;(3)EOW can affect rheological properties of strarch,that is viscoelastic modulus of PS and SPS increased,while that of CS decreased.
文章编号:201718004 中图分类号: 文献标志码:A
基金项目:河南省重大科技专项(141100110400)
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