1、适用范围 |
|
本标准适用于以甘薯为原料,经湿磨法加工制成的工业淀粉。 |
2、技术要求 |
|
2.1 感官要求 |
表1 |
项 目 |
指 标 |
优 级 |
一 级 |
二 级 |
外 观 |
白色或微带浅黄色阴影的粉末,具有光泽 |
气 味 |
具有甘薯淀粉固有的特殊气味,无异味 | |
|
2.2 理化要求 |
表2 |
项 目 |
指 标 |
优 级 |
一 级 |
二 级 |
水分, %(m/m) |
≤15.0 |
细度, %(m/m) |
≥99.8 |
≥99.5 |
≥99.0 |
斑点, 个/㎝~2 |
≤2.0 |
≤5.0 |
≤8.0 |
酸度(中和100g纯干淀粉消耗0.1mol/L氢氧化钠溶液的毫升数) |
≤10.0 |
≤14.0 |
≤18.0 |
灰分(干基0, %(m/m) |
≤0.40 |
≤0.60 |
≤0.80 |
蛋白质(干基),%(m/m) |
≤0.20 |
≤0.30 |
≤0.40 |
白度(蓝光反射率), %(m/m) |
≥90.0 |
≥85.0 |
≥80.0 |
二氧化硫, %(m/m) |
≤0.004 |
— |
— | |
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