Title: Effect of Different Strains on Fermented Feedstuff from Olive Leaves
Abstract: Olive leaves were fermented by Aspergillus niger,Geotrichum candidum,Aspergillus oryzae,Candida utilis,Candida tropicalis,and Trichoderma viride. The effects of the single and the combination of two strains on the cellulase activity( β-glucosidase,CMCase and filter paper activity),protein content,and total tannins content were investigated. The results indicated that the best fermented efficiency for single strain of olive leaves fermented feedstuff was A. niger,with a result of β-glucosidase activity 10. 53 U / m L,CMCase activity 10. 61 U / m L and filter paper activity 4. 02 U / m L when they were fermented for 3 days. The highest protein content 14. 61% for 5 days and the highest tannins degradation 84. 14% for 7 days were achieved. The best fermented efficiency by mixed strains of olive leaves fermented feedstuff was the combination of A. niger and C. utilis with a ratio of 1 ∶ 1( v / v). The highest cellucase activity( β-glucosidase activity 12. 45 U / m L,CMCase activity 12. 59 U / m L,filter paper activity 5. 51 U / m L) was obtained by the mixed strains( 1 ∶ 1) in need of 5 days. When the fermented time reached 7days,the protein content reached 18. 63% and total tannic degradation was 86. 49% in the fermented product.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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