Ability of different edible fungi to degrade crop straw

Abstract

Extracellular enzymes play an important role in the growth and development of edible fungi. Extracellular enzyme activities have also become an important object of measurement. In this study, Agaricus brunnescens Peck, Coprinus comatus, and Pleurotus ostreatus were compared in terms of their enzyme production in liquid-and solid-state fermentation. Differences in the ability of various types of edible fungi to utilize biomass raw materials were analyzed by monitoring the fiber degradation rate during crop straw degradation, and changes in their cellulolytic enzyme systems during growth and metabolism were discussed. This study provided insights into the changes in the lignocellulose degradation ability of edible fungi during their growth and facilitated the discovery of new approaches to accelerate their growth in culture.

Cellulose Pulp- and Castor Oil-Based Polyurethanes for Lubricating Applications: Influence of Streptomyces Action on Barley and Wheat Straws

“…The main characteristic parameters of cellulose pulps' thermal degradation patterns-obtained from the TGA curves depicted in Figure 2-are presented in Table 2, i.e., the temperatures at which degradation steps begin (Tonset) and end (Tfinal), the temperature for the maximum degradation rate (Tmax), the weight losses (ΔW), and the final residue values. Unlike the differences reported for straws submitted to SSF treatments with Streptomyces and the corresponding lignin fractions obtained [16,33], the TGA profiles of cellulose pulps were very similar and not very influenced by the SSF treatments. Thus, all of them exhibited an initial water loss of around 5%-7% and a similar prominent main degradation event centered at around 354-364 °C as a consequence of the cellulose chain breakage [44]; however, some remarks may be pointed out.…”

“…Thus, all of them exhibited an initial water loss of around 5%-7% and a similar prominent main degradation event centered at around 354-364 °C as a consequence of the cellulose chain breakage [44]; however, some remarks may be pointed out. Unlike the differences reported for straws submitted to SSF treatments with Streptomyces and the corresponding lignin fractions obtained [16,33], the TGA profiles of cellulose pulps were very similar and not very influenced by the SSF treatments. Thus, all of them exhibited an initial water loss of around 5-7% and a similar prominent main degradation event centered at around 354-364 • C as a consequence of the cellulose chain breakage [44]; however, some remarks may be pointed out.…”

“…To overcome the challenge, biological treatments have been acutely pointed out as a greener alternative to chemical modifications. Fungi [33,34] and bacteria [16,[35][36][37] are among the most used precursors, and are capable of altering the biomass through a degradation process. Some actinobacteria, like the genus Streptomyces, produce cellulolytic, hemicellulolytic, and ligninolytic enzymes, which break the main linkages that join cellulose, hemicellulose, and lignin, respectively [38].…”

Comparative study on laccase activity of white rot fungi under submerged fermentation with different lignocellulosic wastes

“…Laccase is necessary for lignin degradation by white-rot fungi such as Ganoderma lucidum, Flammulina velutipes, Fomes fomentarius, and Pleurotus ostreatus (Badalyan and Sakeyan 2004;An et al 2016a;Han et al 2020). Laccase production is significantly affected by different species or different strains of the same species (Janusz et al 2015;An et al 2016aAn et al , 2018Huang et al 2019;Han et al 2020). Analysis the capacity of laccase production from different species or strains is helpful to obtain strains with high yield of laccase and provide more valuable strains for industrial production.…”

Qualitative Phytochemical Screening of Various Solvent Extracts of Calocybe Indica, Milky Mushroom

“…Edible mushrooms are cultured in media that usually consist of lignocellulosic agricultural wastes such as crop straw 6 . The organic solid waste remaining after cultivation of edible mushrooms is the spent mushroom substrate (SMS) 7 .…”