Although yeast cannot digest cellulose or lignin, the molecules that form a plant's skeleton, some bacteria and other species of fungi are able to do the job.
The bacteria spin cellulose threads, which bind on the surface forming a layer.
旋转的细菌，在表面形成一层受约束的纤维素线。
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The enzymes are usually made by gene-modified bacteria or fungi and resemble the saliva of termites, which is notoriously good at dissolving cellulose.