Journal ArticleDOI
A rapid and easy method for the detection of microbial cellulases on agar plates using gram's iodine
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TLDR
This is the first report on the use of Gram’s iodine for the detection of cellulase production by microorganisms using plate assay, which is rapid and efficient and can be easily performed for screening large numbers of microbial cultures of both bacteria and fungi.Abstract:
Screening for cellulase-producing microorganisms is routinely done on carboxymethylcellulose (CMC) plates. The culture plates are flooded either with 1% hexadecyltrimethyl ammonium bromide or with 0.1% Congo red followed by 1 M NaCl. In both cases, it takes a minimum of 30 to 40 minutes to obtain the zone of hydrolysis after flooding, and the hydrolyzed area is not sharply discernible. An improved method is reported herein for the detection of extracellular cellulase production by microorganisms by way of plate assay. In this method, CMC plates were flooded with Gram’s iodine instead of the reagents just mentioned. Gram’s iodine formed a bluish-black complex with cellulose but not with hydrolyzed cellulose, giving a sharp and distinct zone around the cellulase-producing microbial colonies within 3 to 5 minutes. The new method is rapid and efficient; therefore, it can be easily performed for screening large numbers of microbial cultures of both bacteria and fungi. This is the first report on the use of Gram’s iodine for the detection of cellulase production by microorganisms using plate assay.read more
Citations
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Genomic and Metabolic Properties of Staphylococcus gallinarum FCW1 MCC4687 Isolated from Naturally Fermented Coconut Water towards GRAS Assessment.
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References
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Journal ArticleDOI
Cellulases and related enzymes in biotechnology
TL;DR: The present article is an overview of the biotechnological state-of-the-art for cellulases and related enzymes.
Journal ArticleDOI
The biological degradation of cellulose
Pierre Béguin,Jean-Paul Aubert +1 more
TL;DR: The study of cellulolytic enzymes at the molecular level has revealed some of the features that contribute to their activity and an increasing number of three-dimensional structures are becoming available for cellulases and xylanases belonging to different families, which will provide paradigms for molecular modeling of related enzymes.
Journal ArticleDOI
The Properties of Fungal and Bacterial Cellulases with Comment on their Production and Application
TL;DR: Structure de la cellulose, sources et production d'enzymes cellulolytiques: regulation, secretion, mutation, mutation et clonage, multiplicite des enzymes.