Journal
BIORESOURCE TECHNOLOGY
Volume 100, Issue 24, Pages 6457-6464Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.07.044
Keywords
Pleurotus ostreatus; Olive mill solid waste; Cattle nutrition; Squalene; Phenols
Funding
- Ministry of Agriculture and Rural Development, Israel [362-0190-08]
- ARO [541/09]
- Volcani Center, Bet Dagan, Israel
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The aims of the current study were to follow: (1) the capability of the edible mushroom Pleurotus ostreatus to degrade cell wall components and soluble phenols of the olive mill solid waste (OMSW), and improve it for ruminant nutrition (2) the fate of oil and the lipid-soluble compounds tocopherols, squalene and beta-sitosterol in the fermented OMSW. A significant decrease in oil and lipid-soluble Compounds with a concomitant shift in the fatty acid profile and degradation of soluble phenols took place already after 14 d. The utilization of lipids by the fungus shifted the degradation of the structural carbohydrates to a later stage, and significantly reduced the metabolizable energy of the OMSW. We propose that edible fungi with reduced lipase activity would preserve the energy and health promoting ingredients of the oil, and force the fungus to degrade structural carbohydrates, thus improving its digestibility. (c) 2009 Elsevier Ltd. All rights reserved.
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