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怎样识别新鲜小米
更新时间: 2020-10-05 00:00:00  

操作方法:

1、新鲜的小米大小和颜色均匀,呈乳白色,黄色或金黄色,有光泽,很少有碎米,无虫,无杂质,闻起来具有正常的清香味,无其他异味,手摸有凉爽感,放在嘴里咀嚼有微甜的感觉,无任何异味。

2、取少量待测小米放于软白纸上,用嘴吹气使其润湿,然后用纸捻搓小米数次,观察纸上是否有轻微的黄色,如有黄色,说明小米中染有黄色素。另外,也可将少量样品加水润湿,观察水的颜色变化,如有轻微的黄色,说明染有黄色素。

关键词: 怎样 识别 新鲜 小米

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