title: Improving the nutritive value of Olive Cake by solid state cultivation of the medicinal mushroom Fomes fomentarius.
abstract: Olive Cake (OC) generated by the olive oil industries, well implanted in Tunisia, represents a major disposal and potentially severe pollution problem. This work presents the study of bioconversion of OC in solid state fermentation with the medicinal mushroom, Fomes fomentarius so as to upgrade its nutritional values and digestibility for its use as ruminants feed. The fungus was cultured on OC for 7-30 d, and subsequently the chemical composition, lignocellulolytic enzyme activities and in vitro digestibility of the resultant substrate were determined. The results obtained showed an increase in the crude protein ranging from 6% to 22% for the control and for treated OC, respectively. Significant (P<0.05) decreases in the values of neutral detergent fiber (hemicelluloses, cellulose and lignin), acid detergent fiber (lignin and cellulose) and acid detergent lignin were detected (23%, 13% and 10%, respectively). The estimated in vitro digestibility improved from 9% (control) to 25% (treated OC). The present findings revealed F. fomentarius to be an efficient organism for lignocellulolytic enzymes production and simultaneous enhancement in crude protein and in vitro digestibility of OC.
authors: Université Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire Microorganismes et Biomolécules Actives, 2092 Tunis, Tunisia. mohamed_naifar@yahoo.com
authors: Mohamed
authors: M
authors: Neifar
authors: Atef
authors: A
authors: Jaouani
authors: Amani
authors: A
authors: Ayari
authors: Olfa
authors: O
authors: Abid
authors: Hichem Ben
authors: HB
authors: Salem
authors: Abdellatif
authors: A
authors: Boudabous
authors: Taha
authors: T
authors: Najar
authors: Raoudha Ellouze
authors: RE
authors: Ghorbel
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D055453:Coriolaceae; D004043:Dietary Fiber / Q000032:analysis; D005285:Fermentation; D009753:Nutritive Value; D031658:Olea; D012037:Refuse Disposal / Q000379:methods*; D012418:Ruminants; D014416:Tunisia