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Direct Ethanol Production from Xylan and Acorn Using the Starch-Fermenting Basidiomycete Fungus Phlebia acerina
| Content Provider | MDPI |
|---|---|
| Author | Okamoto, Kenji Goda, Takato Yamada, Takeru Nagoshi, Masafumi |
| Copyright Year | 2021 |
| Description | During our search for ethanol-producing basidiomycete fungi for a wide range of substrates, we isolated Phlebia acerina, which is a white rot basidiomycete fungus. It favorably converted starch into ethanol with approximately 70% yield. Although the yield decreased as the starch concentration increased, growth and fermentation were observed even at 200 g/L of starch. P. acerina produced ethanol from glucose, galactose, mannose, xylose, cellobiose, and maltose with 93%, 91%, 86%, 72%, 92%, and 68% yields, respectively. Additionally, P. acerina, which secreted xylanase and xylosidase, was capable of assimilating xylan and directly converting it to ethanol with a yield of 63%. Furthermore, P. acerina produced ethanol directly from acorns, which are plant fruits containing starch and tannins, with a yield of 70%. Tannin delayed mycelia growth, thus prolonging ethanol production; however, this did not particularly affect the yield. These results were similar to those of fermentation in a medium with the same amounts of starch and tannin as the target crop acorn, thus suggesting that P. acerina could successfully produce environmentally friendly ethanol from starch-containing lignocellulosic biomass, unlike previously reported ethanol-producing basidiomycete fungi. |
| Starting Page | 116 |
| e-ISSN | 23115637 |
| DOI | 10.3390/fermentation7030116 |
| Journal | Fermentation |
| Issue Number | 3 |
| Volume Number | 7 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-07-15 |
| Access Restriction | Open |
| Subject Keyword | Fermentation Microbiology Basidiomycete Phlebia Acerina Ethanol Xylan Acorn |
| Content Type | Text |
| Resource Type | Article |
