Results 31 to 40 of about 1,945 (165)

Determination of Keratinase Activity using Chicken Feather DMSO extract and its optimization with Response Surface Methodology [PDF]

E3S Web of Conferences
Keratinase is an enzyme capable of degrading keratin, exhibiting two activities: protease activity, which cleaves peptide bonds, and disulfide reductase activity, which reduces disulfide bonds (-S-S-). However, keratinase activity is often measured using
Rizqi Maharani Fazria, Suharti Suharti
doaj   +1 more source

Development of immobilized keratinase and investigation of its efficiency on edible bird nest cleaning process [PDF]

, 2022
The edible Bird Nest (EBN) cleaning process is one of the important processes in the production of EBN and the most tedious part in the production of EBN because it requires a long time.
Sharifah Zafierah, Syed Badrulzaman
core   +2 more sources

ISOLATION AND IDENTIFICATION OF KERATINASE- PRODUCING BACTERIA [PDF]

Journal of Agricultural Chemistry and Biotechnology, 2002
In order to isolate keratinase producing bacteria, the enrichment process using some natural sources including chicken feather, soil, compost and poultry waste digester was carried out. Screening program was conducted at two steps at 30 and 55°C uSing
Naglaa Harndy, I. Ibrahim, H. EI-Fadaly,
doaj   +1 more source

Microbial Exploitation of Feather Wastes for Sustainable Production of Keratinase and Collagenase Enzymes by Didymella keratinophila AUMC 15399 in Submerged Fermentation

Fermentation, 2023
A distinctive isolate was discovered and visually recognized as a member of the genus Didymella during a routine examination of Coelomycetes isolated from diverse fruit juices.
Osama Abdel-Hafeez Mohamed Al-Bedak, Ahmed Mohamed Moharram, Nemmat Abdel-Gawad Hussein, Doaa Mohamed Taha, Steven L. Stephenson, Fuad Ameen   +5 more
doaj   +1 more source

Codon optimization significantly improves the expression level of a keratinase gene in Pichia pastoris. [PDF]

PLoS ONE, 2013
The main keratinase (kerA) gene from the Bacillus licheniformis S90 was optimized by two codon optimization strategies and expressed in Pichia pastoris in order to improve the enzyme production compared to the preparations with the native kerA gene.
Hong Hu, Jie Gao, Jun He, Bing Yu, Ping Zheng, Zhiqing Huang, Xiangbing Mao, Jie Yu, Guoquan Han, Daiwen Chen   +9 more
doaj   +1 more source

Biotransformation of keratin waste to amino acids and active peptides based on cell-free catalysis

Biotechnology for Biofuels, 2020
Background Keratin is the primary constituent of the vertebrate epidermis and epidermal appendages, as well as the main waste product generated during poultry processing from feathers, hair, scales, nails, etc.
Zheng Peng, Xinzhe Mao, Juan Zhang, Guocheng Du, Jian Chen   +4 more
doaj   +1 more source

Novel Feather Degrading Keratinases from Bacillus cereus Group: Biochemical, Genetic and Bioinformatics Analysis

Microorganisms, 2022
In this study, five keratinolytic bacteria were isolated from poultry farm waste of Eastern Province, Saudi Arabia. The highest keratinase activity was obtained at 40–45 °C, pH 8–9, feather concentration 0.5–1%, and using white chicken feather as keratin
Arwa Ali Almahasheer, Amal Mahmoud, Hesham El-Komy, Amany I. Alqosaibi, Sultan Aktar, Sayed AbdulAzeez, J. Francis Borgio   +6 more
doaj   +1 more source

PRODUKSI PROTEASE ALKALI DAN KERATINASE DARI Brevibacillus agri A-03 TERMOFILIK

Jurnal Riset Kimia, 2015
ABSTRAK   Protease alkaline and keratinase are a group of protease enzym which have important value in detergen industry and skin tannery. Brevibacillus agri A-03 is thermophilic bacteria isolate that comes from Ambayan Sumatera Barat hot spring and has ...
Anthoni Agustien, Jetty Nurhajati, Linar Z. Udin, Pingkan Aditiawati   +3 more
doaj   +1 more source

A sustainable exploitation of high-protein feather waste for production of cold-adapted keratinase by Penicillium lanosocoeruleum KSA-55

Electronic Journal of Biotechnology
Background: The synthesis of keratinases by psychrophilic and psychrotolerant microorganisms has not received much attention, despite the fact that they can be an effective stand-in for substrate conversion at a low energy cost.
Eman Alhomaidi
doaj   +1 more source

Parametrically optimized feather degradation by Bacillus velezensis NCIM 5802 and delineation of keratin hydrolysis by multi-scale analysis for poultry waste management

Scientific Reports, 2022
Enormous amounts of keratinaceous waste make a significant and unexploited protein reserve that can be utilized through bioconversion into high-value products using microbial keratinases. This study was intended to assess the keratinase production from a
Isha Sharma, Kumar Pranaw, Hemant Soni, Hemant Kumar Rawat, Naveen Kango   +4 more
doaj   +1 more source