制作甜酒时为什么要在糯米饭中间挖洞?

2025-04-06 02:35:42
推荐回答(4个)
回答1:

酵母菌是一种兼性厌氧性细菌,在糯米饭中间挖洞,有更多的空气和水,这样可以加强酵母菌的有氧呼吸,使酵母菌的数量增多,然后发酵过程中又是密闭的,而糯米饭洞中的氧气消耗完后,酵母菌进行无氧呼吸,从而能产生更多的酒精.总体来说就是,先通气酵母菌数量增多,后密闭产生更多乙醇.

回答2:

因为这样你可以随时观察发酵的进程。当醪糟发酵成功,你会看到洞中有水升至与糯米几乎齐高,而且通常会浮起一些零散的米粒。那些米粒变得象空壳一样轻。

回答3:

要适当散热

回答4:

挖洞可更利于观察产生酒的多少,
发酵过程中,酵母菌的代谢是一个很复杂的过程,这个过程是在多种酶的参与下,经过糖酵解由六碳糖生成丙酮酸,丙酮酸在氧气充足的情况下,呼吸作用旺盛,有氧呼吸产生二氧化碳和水,出芽生殖迅速,在蒸馒头和做面包等糕点的面粉中加酵母菌就是根据这个原理。
无氧呼吸时,发酵产生酒精,二氧化碳等和乳酸菌等代谢物,酿制酒酿就是根据这个原理,有时蒸出的馒头变酸也是如此。
酿酒时应先让酵母菌有氧呼吸,出芽生殖产生大量酵母菌,再让酵母菌无氧呼吸(在酒精中的酵母菌为无氧呼吸),这样发酵产生的酒精才会多。
所以制作甜酒时要在糯米饭中间挖洞(为了糯米中氧气较多)就因为如此。

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