Department of Molecular Biosciences and Bioengineering (MBBE), University of Hawai'i at Mānoa, 1955 East-West Road, Agricultural Science Building 218, Honolulu, HI 96822, USA.
Bioresour Technol. 2011 May;102(10):5808-14. doi: 10.1016/j.biortech.2011.02.058. Epub 2011 Feb 17.
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/ginitial 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.
本研究考察了利用生物柴油衍生的粗甘油生产食用真菌——少孢根霉的潜力。在最佳培养条件下（例如，非无菌粗甘油浓度为 75%（w/v），添加营养物质但不控制 pH 值），观察到真菌生物量产量高达 0.83±0.02（g 生物量增加/g 初始生物量），生长极为旺盛。评估了前端处理的斑茅（Pennisetum purpureum）汁作为粗甘油发酵的营养源的潜力，真菌生物量产量提高了 2.3 倍。来源于甘油的真菌生物量含有大量苏氨酸，苏氨酸是反刍动物饲料中的主要限制氨基酸之一。这种廉价的真菌蛋白有可能通过降低动物饲料的生产成本来降低肉类产品的价格。因此，真菌技术的应用为生物柴油精炼厂提供了一个独特的可持续选择，为真菌产品提供了额外的收入来源。
