The potential of Pleurotus-treated olive mill solid waste as cattle feed

Ariel Shabtay*, Yitzhak Hadar, Harel Eitam, Arieh Brosh, Alla Orlov, Yaakov Tadmor, Ido Izhaki, Zohar Kerem

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


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 β-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.

Original languageAmerican English
Pages (from-to)6457-6464
Number of pages8
JournalBioresource Technology
Issue number24
StatePublished - Dec 2009

Bibliographical note

Funding Information:
We wish to thank Professor Oded Beja, Dr. Efraim Lewinsohn and Professor Zeev Arad for critically reviewing this manuscript. We thank Dr. Yoav Aharoni for his useful comments. The technical assistance of Ms. Alexandra Agranovsky and Ayala Meir is deeply acknowledged. This research was supported by funds of the Chief Scientist, Ministry of Agriculture and Rural Development, Israel, Grant Number 362-0190-08. Contribution No. 541/09 from the ARO, the Volcani Center, Bet Dagan, Israel.


  • Cattle nutrition
  • Olive mill solid waste
  • Phenols
  • Pleurotus ostreatus
  • Squalene


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