期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 10, 页码 5808-5814出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.02.058
关键词
Biodiesel biorefinery; Animal feed; Fungal protein; Crude glycerol; Rhizopus microsporus var. oligosporus
资金
- United States Department of Agriculture-Agricultural Research Service (USDA-ARS) [58-5320-8-392]
- College of Tropical Agriculture and Human Resources (CTAHR), University of Hawai'i at Manoa
This study examined the potential of producing an edible fungus, Rhizopus microsporus var. oligosporus, on biodiesel-derived crude glycerol. Prolific fungal growth was observed with a fungal biomass yield of 0.83 +/- 0.02 (g biomass increase/g initial biomass) under optimal cultivation conditions (e.g. nonsterile crude glycerol at a concentration of 75% (w/v) with nutrient supplementation and without pH control). The potential of utilizing front-end processed banagrass (Pennisetum purpureum) juice as a source of nutrients for crude glycerol fermentation was evaluated with a 2.3-fold improvement in the fungal biomass yield. The glycerol-derived fungal biomass showed high amounts of threonine, one of the main limiting amino acids in non-ruminant feeds. An inexpensive fungal protein has the potential to reduce meat product prices by lowering the production costs of animal feeds. The application of fungal technology thus provides a unique sustainable option for biodiesel refineries by providing an additional source of revenue from fungal products. (C) 2011 Elsevier Ltd. All rights reserved.
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