High concentrations of cellulosic ethanol achieved by fed batch semi simultaneous saccharification and fermentation of waste-paper.

Bioresour Technol · 2013 · PMC3629557 · PMID 23500568

Europe PMC DOI

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may be significantno p-value reported

The energy that this consumes may be significant and will require further evaluation through life cycle analysis.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.