| 对加工甘薯淀粉中混掺玉米淀粉的检测 |
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| 引用本文： | 林学岷,康维民,许金祥,张翠兰.对加工甘薯淀粉中混掺玉米淀粉的检测[J].河北科技师范学院学报,1992(3). |
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| 作者姓名： | 林学岷 康维民 许金祥 张翠兰 |
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| 作者单位： | 河北农业技术师范学院农业工程系，河北农业技术师范学院农业工程系，河北农业技术师范学院农业工程系，河北农业技术师范学院农业工程系 |
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| 摘 要： | 为了解决粉条加工中甘薯淀粉不纯,混掺玉米淀粉造成碎粉率增加的弊端,根据玉米淀粉与甘薯淀粉组成结构的不同,二种淀粉遇碘制剂呈现不同的显色反应原理,将纯甘薯淀粉、纯玉米淀粉以及含有不同比例玉米淀粉的混合淀粉配制成一定浓度的淀粉试液,在各种淀粉试液中加入一定剂量的复合碘制剂,根据其颜色变化的不同,确定甘薯淀粉中是否混掺玉米淀粉。用光电分光光度计测定混合淀粉试液的吸光率值,通过数据回归方程确定混合淀粉中玉米淀量的含量。
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| 关 键 词： | 甘薯淀粉 玉米淀粉 检测 |
EXAMINATION AND DETERMINATION OF MAIZE STARCH MIXED WITH PROCESSED STARCH OF SWEET POTATO |
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| Lin Xuemin Kang Weimin Xu Jinxiang Zhang Cuilan.EXAMINATION AND DETERMINATION OF MAIZE STARCH MIXED WITH PROCESSED STARCH OF SWEET POTATO[J].Journal of Hebei Normal University of Science & Technology,1992(3). |
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| Authors: | Lin Xuemin Kang Weimin Xu Jinxiang Zhang Cuilan |
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| Abstract: | To solvc the malpractice unpurity of the starch in nodle making caused by maize starch mixed with swcet potato starch and the higher breaking rate of starch noodle, and according to the principle that the two have different structures and different colours when they meet iodine preparation, we made up respectively starch test solutions of definite concentration with pure starch of sweet potato and maize and mixed starch of various contents of maize starch. From the different colours shown when compound preparation of iodine was put inthem, it co uld be defined if marze starch was mixed with sweet potato starch or not. Pho toelectric spectrophotometer was used to determine the light-absorbent rate of the test solutions of mixed and the content of maize starch in mixed starch was calculated by data regression equation. |
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| Keywords: | sweet potato starch maize starch examination and determination |
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