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小米粥里放冷紫薯为什么变绿色了
更新时间: 2020-10-08 00:00:00  

1、紫薯中含有花青素,花青素遇碱性物质变为蓝绿色。

2、紫薯的花青素有指示剂作用,遇碱变蓝。加上小米的黄色,就是绿色了。

3、如果没有放小苏打的话,应该是水有碱性。蓝莓松糕因为发酵粉里有小苏打,有时会变成灰绿色。

关键词: 小米粥 为什么 绿色

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