Search results for "cellulolytic activity"
showing 3 items of 3 documents
Determining Cellulolytic Activity of Microorganisms
2020
Abstract Decomposition of cellulose to glucose requires complex cooperation of glycoside hydrolase enzymes. As a result of glycoside β-1,4 bonds hydrolysis, shorter chains of cellulose, oligodextrin, cellobiose and glucose are created. A number of bacteria and fungi demonstrate the capacity to degrade cellulose. Their activity can be assessed with the use of qualitative and quantitative methods. Qualitative methods with the use of e.g. Congo red, are used in screening studies, however, they do not provide information about the quantity of the produced enzyme. Spectrophotometric methods are more accurate and they measure the quantities of reducing sugars with the use of appropriate substrate…
Fungal contaminants in Sicilian livestock feeds and first studies on the enzymatic activity of Aspergillus isolates
2019
The purposes of this study were 1) to determine the total fungal contamination in Sicilian raw materials and livestock, 2) to evaluate the occurrence of Aspergillus spp., Penicillium spp. and Fusarium spp., 3) to identify fungi belonging to the genus Aspergillus and 4) to determine their ability to produce cellulolytic enzymes. Fourteen feed samples were collected in a feed mill near to Palermo (Sicily, Italy). Analysis of the total mycobiota was performed on Sabourad Dextros Agar (SAB) and Potato Dextrose Agar (PDA) and total fungal counts were expressed as CFU/g. Aspergillus spp. isolates were selected on the basis of the frequency of isolation and identifed using micro and macro-morpholo…
The comparison of cellulolytic activity of the modified soil treated with Roundup
2016
Aktywność mikroorganizmów gleby wpływa na jej żyzność oraz strukturę, co pozwala uzyskać satysfakcjonujące plony, między innymi dzięki przemianom materii organicznej w próchnicę. Proces ten zachodzi w obecności różnych grup mikroorganizmów, których aktywność może być zaburzona w wyniku stosowania przez rolników zarówno nawozów sztucznych, jak i organicznych oraz pestycydów. Ważnym ogniwem w obiegu węgla w biosferze jest degradacja celulozy. Rozkład celulozy zachodzi przy udziale drobnoustrojów o aktywności celulolitycznej, które produkują enzymy kompleksu celulaz. Celem pracy było porównanie aktywności celulolitycznej gleby wzbogaconej fosforanem mocznika i/lub obornikiem po opryskaniu pows…