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Position: Home > Articles > 颗粒状冷水可溶马铃薯淀粉的制备及性质研究 Science and Technology of Food Industry 2007,28 (3) 117-120

颗粒状冷水可溶马铃薯淀粉的制备及性质研究

作  者:
高群玉;蔡丽明;陈惠音;宫慧慧
单  位:
华南理工大学轻工与食品学院;通标标准技术服务有限公司上海分公司
关键词:
颗粒状;冷水可溶淀粉;马铃薯淀粉;非晶化
摘  要:
以马铃薯淀粉为原料,研究了常压下颗粒状冷水可溶淀粉的制备方法和性质特征。实验证明,醇解法所得的颗粒状冷水可溶淀粉的溶解度可以达到100%。反应的最佳条件为相对加入碱量28mL,乙醇浓度80%,淀粉乳浓度14%,反应温度40℃,反应时间50min,对应的最佳颗粒状冷水可溶马铃薯淀粉的冷水溶解度为97.4%(60g马铃薯淀粉)。经醇解法处理后所得到的不同冷水溶解度的颗粒状淀粉样品,颗粒保持完整,但其表面不再光滑,呈现出凹陷﹑空隙和裂缝等特征;随着冷水溶解度的提高,淀粉样品的偏光十字呈现逐渐减少的趋势,且结晶性逐渐降低直至完全消失。
译  名:
颗粒状冷水可溶马铃薯淀粉的制备及性质研究
关键词:
granule;cold-water soluble starch;potato starch;non-crystallization
摘  要:
This paper presents the preparation and properties of granular cold-water-soluble potato starch.Experiments indicate that the GCWS starch prepared by alcoholic-alkaline treatment can 100% dissolve in the cold water.The optimum reaction conditions are:the amount of alkaline 28mL,the concentration of alcohol 80%,the concentration of starch solution 14%,the reaction temperature 40℃,the reaction time 50 min.The cold water solubility of the GCWS potato starch under the optimum conditions is 97.4%(for 60g potato native starch).The GCWS potato starch samples remain the granule,but there are dimples and indentation on its surface.With the increasing cold water solubility,the typical Maltese-cross birefringence pattern of the samples and the degree of crystallization decrease.

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