科普專欄–薯不揀單 - 深入淺出–細菌能否用來釀酒？

酵母能夠將葡萄糖轉化成為酒精及二氧化碳，酵母品種Saccharomyces cerevisiae亦因此亦成為了釀酒用的長年之選。603Please respect copyright.ＰＥＮＡＮＡzdyquXabJU
603Please respect copyright.ＰＥＮＡＮＡiy8Lag7vMT
603Please respect copyright.ＰＥＮＡＮＡRBUq0H42B9
那麼除了酵母之外，細菌又可不可以用來釀酒呢?603Please respect copyright.ＰＥＮＡＮＡ4hQbhlp2wY
603Please respect copyright.ＰＥＮＡＮＡgzSurjg5xb
（圖2）事實上的確有細菌品種能夠轉化葡萄糖為酒精，Z.mobilis是其中一道例子，其產生酒精的效率比酵母高出3-5倍(Ref1)。603Please respect copyright.ＰＥＮＡＮＡuBPBtQRDl8
甚至乎，Z.mobilis 細菌的最高酒精產量可達97%(Ref2)，而S. cerevisiae則最高只能去到90-92%(Ref3)。603Please respect copyright.ＰＥＮＡＮＡFwJbhdxGrS
603Please respect copyright.ＰＥＮＡＮＡAL3SoPkjPB
603Please respect copyright.ＰＥＮＡＮＡ3RR3Pls75S
可觀的表面數據擺在眼前，為何好像並不常聽見有人利用細菌來釀酒呢?603Please respect copyright.ＰＥＮＡＮＡQLtujMiGTg
603Please respect copyright.ＰＥＮＡＮＡ4QQRZYafYn
（圖3）其中一道致命的原因，就是該細菌產生酒精的過程中，會產生帶有異味及混濁顏色的化學物（Acetylaldehyde及Sulfide Compounds），為酒精飲品帶來味覺及視覺的負面影響。603Please respect copyright.ＰＥＮＡＮＡ6D8VtBRI1D
603Please respect copyright.ＰＥＮＡＮＡGuxo8g7BZm
603Please respect copyright.ＰＥＮＡＮＡH6ArOZd7Bf
以墨西哥的普逵酒 (Pulque)為例，其釀製過程中便會加入Z. mobilis，從圖中可以清楚見得到其視覺的衝突，至於味道究竟如何我就不太清楚......603Please respect copyright.ＰＥＮＡＮＡSr8iRBGHhR
603Please respect copyright.ＰＥＮＡＮＡCN1laYLgrf
另一方面，基於Z. mobilis 無法在pH 3.75以下的環境繁殖，有不少的英國蘋果酒均會盡量將pH壓低3.5或以下，減低酒精受到Z. mobilis污染的機會。603Please respect copyright.ＰＥＮＡＮＡKfvAR8oKq2
603Please respect copyright.ＰＥＮＡＮＡDkGPsh4kph
雖然細菌在產酒過程中會產生對飲用帶來負面效果的化學物，但基於其卓越的產酒效率，在工業用酒精的生產方面仍有其發揮空間。603Please respect copyright.ＰＥＮＡＮＡZweK55BObd
同時間，亦難保有科學家會利用基因編輯技術，產生出一種高效率而又不會產生不良化合物的釀酒細菌品種。603Please respect copyright.ＰＥＮＡＮＡPsCrff9a1M
603Please respect copyright.ＰＥＮＡＮＡmhPbMt1jjw
603Please respect copyright.ＰＥＮＡＮＡmJCx8fwrrp
如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。603Please respect copyright.ＰＥＮＡＮＡQsXuQoXGv1
603Please respect copyright.ＰＥＮＡＮＡiHptlLay50
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc603Please respect copyright.ＰＥＮＡＮＡmglI4z2o5q
603Please respect copyright.ＰＥＮＡＮＡb2heojnB7t
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。603Please respect copyright.ＰＥＮＡＮＡZG6obqaXAY
603Please respect copyright.ＰＥＮＡＮＡ0hnMJIPhUf
Link:603Please respect copyright.ＰＥＮＡＮＡlE4DAS5vTL
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio603Please respect copyright.ＰＥＮＡＮＡag0bdBIHVe
603Please respect copyright.ＰＥＮＡＮＡspZkSjb8LW
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。603Please respect copyright.ＰＥＮＡＮＡR5C1aNKMB7
603Please respect copyright.ＰＥＮＡＮＡ0jmpx0PLtf
https://www.instagram.com/potatopigtongue/603Please respect copyright.ＰＥＮＡＮＡIRs1nrnSJh
603Please respect copyright.ＰＥＮＡＮＡ8BuLuLOYWg
603Please respect copyright.ＰＥＮＡＮＡV2BdRTwo4e
603Please respect copyright.ＰＥＮＡＮＡ0Moyj5iphz
Ref1:https://academic.oup.com/femsle/article/145/3/301/605010603Please respect copyright.ＰＥＮＡＮＡGJFkbXy0uU
Ref2:https://link.springer.com/chapter/10.1007%2F3540116982_2603Please respect copyright.ＰＥＮＡＮＡIgiIu896DO
Ref3:https://link.springer.com/article/10.1007/s00253-003-1393-5603Please respect copyright.ＰＥＮＡＮＡhlVFwDsyCp

ns216.73.216.190da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章