It breaks starch molecules into more digestible fragments.
它使得淀粉分子变成更加易消化的片段。
"They are like little factories that spit out biofuel molecules without the need for starch or cellulose, " explains Gibbons.
吉本斯解释：“这就像一个不需要淀粉或者纤维素就能生产出生物燃料分子的小型工厂。”
Both starch and cellulose consist of sugar molecules, linked together in different ways, and sugar is what fermentation feeds on.
淀粉和纤维素都由多糖分子构成，只不过连结方式不同，而且发酵也以糖为能源。
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