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399917

Evaluation of cold-adapted lipolytic activity of some Cladosporium, Penicillium, and Talaromyces species

Article

Last updated: 28 Dec 2024

Subjects

-

Tags

Botany and Microbiology

Abstract

In this study, 216 isolates—104 Cladosporium, 94 Penicillium, and 18 Talaromyces—were evaluated for lipolytic activity at 10 °C on agar medium. Of the total isolates, 167 (77 Cladosporium, 81 Penicillium, and 9 Talaromyces) yielded positive results, accounting for 77.31 % of total. Of these, 40 isolates (14 Cladosporium, 25 Penicillium, and 1 Talaromyces) demonstrated high lipase activity, 54 moderate (25 Cladosporium, 22 Penicillium, and 7 Talaromyces), and 73 isolates (38 Cladosporium, 34 Penicillium, and 1 Talaromyces) displayed low lipolytic activity. All forty of the isolates from the first screening that had significant lipase activity at 10 °C were selected for the secondary screening under submerged fermentation conditions (SmF). Although in varying amounts, every isolate tested in the submerged fermentation secondary screening experiment was able to produce lipase. At 5 ºC, lipase's specific activity ranged from 6.1 to 353.4 U/mg protein; at 10 ºC, it was 3.83 to 353.34 U/mg; at 15 ºC, it was 6.77 to 463.75 U/mg; and at 20 ºC, it was 4.38 to 485.84 U/mg. Based on sequencing of internal transcribed spacer region (ITS), the two most active strains were identified as Cladosporium cladosporioides AUMC 15908 and Talaromyces pinophilus AUMC 308.

DOI

10.21608/aunj.2024.316072.1088

Keywords

Cladosporium, Lipase, Penicillium, Screening, Talaromyces

Authors

First Name

Osama

Last Name

Al-Bedak

MiddleName

A

Affiliation

Assiut University Mycological Centre

Email

osamaalbedak@science.au.edu.eg

City

-

Orcid

0000-0003-0465-619X

First Name

Asmaa

Last Name

Omar

MiddleName

M.A.

Affiliation

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

Email

asmaa.15242446@science.au.edu.eg

City

Assiut

Orcid

0000-0001-9160-7286

First Name

Abdel-Naser

Last Name

Zohri

MiddleName

A.

Affiliation

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

Email

zohriassiut@aun.edu.eg

City

Assiut

Orcid

0000-0002-6503-7133

First Name

Ahmed

Last Name

Abdel-Malek

MiddleName

Y.

Affiliation

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

Email

ahmed.ahmed18@science.au.edu.eg

City

Assiut

Orcid

0009-0009-0021-7430

Volume

54

Article Issue

1

Related Issue

52460

Issue Date

2025-01-01

Receive Date

2024-08-28

Publish Date

2025-01-01

Page Start

24

Page End

43

Print ISSN

2812-5029

Online ISSN

2812-5037

Link

https://aunj.journals.ekb.eg/article_399917.html

Detail API

https://aunj.journals.ekb.eg/service?article_code=399917

Order

399,917

Type

Novel Research Articles

Type Code

2,242

Publication Type

Journal

Publication Title

Assiut University Journal of Multidisciplinary Scientific Research

Publication Link

https://aunj.journals.ekb.eg/

MainTitle

Evaluation of cold-adapted lipolytic activity of some Cladosporium, Penicillium, and Talaromyces species

Details

Type

Article

Created At

28 Dec 2024