Industrial by-products from white-rot fungi production. Part I: Generation of enzyme preparations and chemical, protein biochemical and molecular biological characterization

With the increasing of water pollution, water eutrophication is seriously affecting people’s daily life and production. Therefore, it is particularly important to explore safe and efficient algae control technology. In the current algal bloom treatment methods, the physical method is not complete in algae dissolving, and the cost of algal control is high. The chemical method is easy to produce secondary pollution and toxic by-products, and the safety is not high. However, the biological method has the advantages of low cost, high ecological security and good ecological compatibility. It is considered to be a more promising method to remove algae and biological toxins, and it is also an inevitable trend to control water eutrophication in the future.

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Effects of white rot fungi on the composition and in vitro digestibility of crop by-products

Agricultural Wastes ◽

10.1016/0141-4607(80)90016-5 ◽

1980 ◽

Vol 2 (3) ◽

pp. 199-205 ◽

Cited By ~ 8

Author(s):

M.N.M. Ibrahim ◽

G.R. Pearce

Keyword(s):

White Rot Fungi ◽

White Rot ◽

In Vitro Digestibility ◽

By Products

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Pleurotus spp. Cultivation on Different Agri-Food By-Products: Example of Biotechnological Application

Sustainability ◽

10.3390/su11185049 ◽

2019 ◽

Vol 11 (18) ◽

pp. 5049 ◽

Cited By ~ 7

Author(s):

Mena Ritota ◽

Pamela Manzi

Keyword(s):

Chemical Composition ◽

Food Industry ◽

Recent Literature ◽

White Rot Fungi ◽

Added Value ◽

White Rot ◽

Biotechnological Application ◽

Food Residues ◽

Degradation Ability ◽

By Products

Agri-food industry generally produces huge volumes of wastes all over the world, and their disposal is a threat to the environment and public health. The chemical composition of most of these wastes make them be defined as lignocellulosic materials, so they could be a suitable substrate for solid-state fermentation process operated by mushrooms. White-rot fungi are well known for their degradation ability of lignocellulosic material, and many scientific works reported the use of different substrates for their production. Biotechnological treatments of agri-food wastes by mushrooms could be considered an eco-friendly solution to reuse and valorize them, besides to reduce their environmental impact. In this way, wastes would be transformed into new resources to produce added-value food products, besides representing an economic return for the same industries. The aim of this review is to provide an overview of the recent literature concerning the use of different agri-food residues as growth substrates for Pleurotus spp. cultivation, with attention to their effects on the growth and chemical composition of the cultivated mushrooms.

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Elimination of Bisphenol A and Triclosan Using the Enzymatic System of Autochthonous Colombian Forest Fungi

ISRN Biotechnology ◽

10.5402/2013/968241 ◽

2013 ◽

Vol 2013 ◽

pp. 1-12 ◽

Cited By ~ 23

Author(s):

Carolina Arboleda ◽

H. Cabana ◽

E. De Pril ◽

J. Peter Jones ◽

G. A. Jiménez ◽

...

Keyword(s):

Bisphenol A ◽

Estrogenic Activity ◽

White Rot Fungi ◽

White Rot ◽

Enzymatic System ◽

Duration Of Treatment ◽

Spectra Analysis ◽

Enzyme Preparations ◽

Molecular Weights ◽

Enzyme Solution

Bisphenol A (BPA) and triclosan (TCS) are known or suspected potential endocrine disrupting chemicals (EDCs) which may pose a risk to human health and have an environmental impact. Enzyme preparations containing mainly laccases, obtained from Ganoderma stipitatum and Lentinus swartzii, two autochthonous Colombian forest white rot fungi (WRF), previously identified as high enzyme producers, were used to remove BPA and TCS from aqueous solutions. A Box-Behnken factorial design showed that pH, temperature, and duration of treatment were significant model terms for the elimination of BPA and TCS. Our results demonstrated that these EDCs were extensively removed from 5 mg L−1 solutions after a contact time of 6 hours. Ninety-four percent of TCS and 97.8% of BPA were removed with the enzyme solution from G. stipitatum; 83.2% of TCS and 88.2% of BPA were removed with the L. swartzii enzyme solution. After a 6-hour treatment with enzymes from G. stipitatum and L. swartzii, up to 90% of the estrogenic activity of BPA was lost, as shown by the yeast estrogen screen assay. 2,2-Azino-bis-(3-ethylthiazoline-6-sulfonate) (ABTS) was used as a mediator (laccase/mediator system) and significantly improved the laccase catalyzed elimination of BPA and TCS. The elimination of BPA in the absence of a mediator resulted in production of oligomers of molecular weights of 454, 680, and 906 amu as determined by mass spectra analysis. The elimination of TCS in the same conditions produced dimers, trimers, and tetramers of molecular weights of 574, 859, and 1146 amu. Ecotoxicological studies using Daphnia pulex to determine lethal concentration (LC50) showed an important reduction of the toxicity of BPA and TCS solutions after enzymatic treatments. Use of laccases emerges thus as a key alternative in the development of innovative wastewater treatment technologies. Moreover, the exploitation of local biodiversity appears as a potentially promising approach for identifying new efficient strains for biotechnological applications.

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Perlakuan Biologis Dengan Memanfaatkan Fungi Untuk Meningkatkan Kualitas Pakan Ternak Asal Limbah Pertanian.

Jurnal Peternakan Sriwijaya ◽

10.33230/jps.8.2.2019.10227 ◽

2020 ◽

Vol 8 (2) ◽

pp. 18-34

Author(s):

Yanuartono - ◽

Hary - Purnamaningsih ◽

Soedarmanto - Indarjulianto ◽

Alfarisa - Nururrozi ◽

Slamet - Raharjo ◽

...

Keyword(s):

Wheat Straw ◽

Biological Treatment ◽

Nutritional Value ◽

Nutritive Value ◽

White Rot Fungi ◽

Brown Rot ◽

White Rot ◽

Paddy Straw ◽

Livestock Farming ◽

By Products

ABSTRACTAn improvement in animal feeding is one of the important and basic conditions for the better management of farming of animals. It was recognized that poor quality of the feed is mainly responsible for the poor animal performance. For most farming practices, feed is an expensive component in livestock farming. Alternative feed can be obtained from agricultural by-products with huge amount around the world. The main factors limiting the utilization of agricultural by-products like paddy straw, wheat straw and corn stover are their low digestibility, low protein content and some time low palatability. However, the nutritive value of the agricultural by-products can be enhanced through their biological treatment and hence play an important role to meet nutrient requirements of the animals. Thus, an alternative approach is biological treatment especially fungi to increase digestibility of agricultural by-products. The use of white rot fungi, brown rot fungi and soft rot fungi that metabolize lignocelluloses is a potential biological treatment to improve the nutritional value of agricultural by-products. This paper aims to discuss the role of fungi in increasing the nutritional value of agricultural by-products like paddy straw, wheat straw and corn stover.Keywords: Agricultural by-products, Biological treatment, fungi, Lignocelluloses

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Potential of white-rot fungi for bioremediation

Revista Brasileira de Gestão Ambiental e Sustentabilidade ◽

10.21438/rbgas.040722 ◽

2017 ◽

Vol 4 (7) ◽

pp. 229-232 ◽

Cited By ~ 1

Author(s):

Ronivaldo Rodrigues da Silva

Keyword(s):

Waste Treatment ◽

White Rot Fungi ◽

White Rot ◽

Toxic Substances ◽

Chemical Methods ◽

Fungal Enzymes ◽

Mild Conditions ◽

Environmental Friendly ◽

Physico Chemical ◽

By Products

Environmental applications of enzymes in biodegradation for preventing pollution by toxic byproducts warrants approaches that can be performed under mild conditions, are economically feasible and can replace the use of chemicals. Technologies involving physico-chemical methods, like incineration, dechlorination and UV oxidation, for waste treatment are not acceptable since they generate a lot of pollutants as by-products. To address these problems, environmental–friendly alternatives are required for bioremediation. In this context, fungal enzymes have emerged as a natural tool to detoxification of pollutants in environment, and the potential to convert toxic substances to less hazardous or non-hazardous forms. However, what are the effective advances by using white-rot fungi for bioremediation? Here, a brief discussion about the application of these fungi to detoxification of pollutants in environment has been considered.

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Treatment of the effluent from a kraft bleach plant with white rot fungi Pleurotus sajor caju and pleurotus ostreatus

Global NEST Journal ◽

10.30955/gnj.000523 ◽

2013 ◽

Vol 10 (3) ◽

pp. 426-431

Keyword(s):

Organic Compounds ◽

Biological Treatment ◽

Kraft Pulp ◽

Paper Industry ◽

White Rot Fungi ◽

Pulp Mill ◽

White Rot ◽

Pleurotus Sajor Caju ◽

Final Effluent ◽

By Products

The final effluents from pulp and paper industry, even after biological treatment, often contain a plethora of unwanted by-products, which confer them colour and toxic characteristics. The aim of this work was to promote degradation of organic matter and remove colour by contacting fungi Pleurotus sajor caju or P. ostreatus with effluents from kraft pulp mill after treatment by an activated sludge process. Absorbance reduction of 57 and 76 % was observed after 14 days of treatment of final effluent with glucose by P. sajor caju, at 400 and 460 nm, respectively. Lower values of absorbance reduction were observed in final effluent with additives and inoculated with the same species (22 to 29%). Treatment with P. ostreatus was more efficient in the effluent with additives, 38.9 to 43.9% of reduction. Higher growth rate of P. sajor caju was observed in the effluent with glucose. Biological treatment resulted in 65-67% reduction of COD after 14 days revealing no differences for each effluent composition and inoculated species. Profiles of composition of organic compounds obtained by GC-MS showed no significant differences between the two effluents treated with P. sajor caju or P. ostreatus, but longer incubation time reflected higher reduction of organic compounds.

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