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207984

Cellulase and Xylanase Production by Sugarcane Bagasse Mycobiota

Article

Last updated: 28 Dec 2024

Subjects

-

Tags

Utilization of sugar industry wastes

Abstract

            Lignocelluloses of sugarcane represent a precious and cheap source for enzyme production by several fungal species. In the present study 25 samples of sugarcane bagasse were analyzed for their fungal content. The growing fungal strains were then screened for their abilities to produce cellulolytic and xylanolytic enzymes in solid and broth cultures. A total of 62 fungal species belonging to 31 genera were identified from the tested samples. The most prevalent genera were Aspergillus and Fusarium being isolated from 96% of the tested samples. Mucor, Penicillium and Talaromyces colonized 45% - 52% of bagasse samples.The most prevalent species were A. flavus, A. niger and F. oxysporum. Internal trans. Spacer (ITS) sequences of rDNA confirmed the identification of two new records (Ceratocystis adiposa, Phaeoacremonium viticola) in addition to Sarocladium kiliense, Stachybotrys chartarum and S. elegans. Cellulolytic activities were detected in solid cultures of 73.7% of fungal strains with the most active being Aspergillus tamarii, Exserohilum rostratum and S. chartarum. Xylanolytic activities were exhibited by59.8% of fungal strains and the active xylanase producers were A. niger, A. tamarii, A. tubingensis, C. adiposa and E. rostratum. Spectrophotometric measurements using dinitrosalicylic acid (DNS) reagents howed high cellulase concentration in broth cultures of S. chartarum followed by A. niger, C. adiposa and S. elegans (10.2- 52.0 IU/ml). The relative activity of fungal cellulase ranged from 0.2-1.7 IU/ml/min whereas the specific activity fluctuated between 2.471-14.590 IU/mg protein. Xylanase concentration, relative and specific activities were markedly high especially in cultures of A. niger (360.6 IU/ml, 32.0IU/ml/min. and 64.611 IU/mg protein, respectively).

DOI

10.21608/esugj.2021.207984

Keywords

Sugarcane bagasse, fungi, Cellulases, Xylanases, Enzymes

Authors

First Name

Ahmed

Last Name

Moharram

MiddleName

M.

Affiliation

Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut, Egypt

Email

ahmed.marzouk@science.aun.edu.eg

City

-

Orcid

-

First Name

Abdel-Naser

Last Name

Zohri

MiddleName

A.

Affiliation

Department of Botany and Microbiology, Faculty of Science, Assiut University, Assiut, Egypt

Email

-

City

-

Orcid

-

First Name

Dalia

Last Name

Hussein

MiddleName

A.

Affiliation

Moubasher Centre for Mycology, Assiut University, Egypt

Email

-

City

-

Orcid

-

Volume

16

Article Issue

0

Related Issue

29270

Issue Date

2021-06-01

Receive Date

2021-12-07

Publish Date

2021-06-01

Page Start

41

Page End

76

Print ISSN

2636-2694

Online ISSN

2636-283X

Link

https://esugj.journals.ekb.eg/article_207984.html

Detail API

https://esugj.journals.ekb.eg/service?article_code=207984

Order

207,984

Type

Original Research Articles.

Type Code

2,178

Publication Type

Journal

Publication Title

Egyptian Sugar Journal

Publication Link

https://esugj.journals.ekb.eg/

MainTitle

Cellulase and Xylanase Production by Sugarcane Bagasse Mycobiota

Details

Type

Article

Created At

23 Jan 2023