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买鸡蛋时怎样判断鸡蛋的好坏
更新时间: 2020-10-20 00:00:00  

买鸡蛋时,判断鸡蛋的好坏的方法有:

1、感官鉴别:用眼睛观察蛋的外观形状、色泽、清洁程度。良质鲜蛋,蛋壳干净、无光泽,壳上有一层白霜,色泽鲜明。劣质蛋,蛋壳表面的粉霜脱落,壳色油亮,呈乌灰色或暗黑色,有油样浸出。

2、手摸鉴别:把蛋放在手掌心上翻转。良质鲜蛋蛋壳粗糙,重量适当。劣质蛋,手掂重量轻,手摸有光滑感。

3、耳听鉴别:良质鲜蛋相互碰击声音清脆,手握蛋摇动无声。劣质鲜蛋蛋与蛋相互碰击发出怪异声,手握蛋摇动时有晃荡声。

4、鼻嗅鉴别:用嘴向蛋壳上轻轻哈一口热气,用鼻子嗅其气味。良质鲜蛋有轻微的生石灰味。

关键词: 鸡蛋 怎样 判断 好坏

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