Pretreatment of wheat straw by white-rot fungi for enzymic saccharification of cellulose

1983 ◽  
Vol 18 (6) ◽  
pp. 350-357 ◽  
Author(s):  
Annele I. Hatakka
Keyword(s):  
Wheat Straw ◽  
White Rot Fungi ◽  
White Rot ◽  
Enzymic Saccharification

The influence of urea and white rot fungi on the nutritional value of wheat straw

2000 ◽  
Vol 2000 ◽  
pp. 59-59
Author(s):  
Y Rouzbehan ◽  
H. Fazaeli ◽  
A. Kiani
Keyword(s):  
Chemical Composition ◽  
Solid State ◽  
Wheat Straw ◽  
Nutritional Value ◽  
Animal Feed ◽  
White Rot Fungi ◽  
White Rot ◽  
Complex Process ◽  
Biological Methods ◽  
Low Nitrogen

In Iran, wheat straw which is produced in huge amounts has been used in animal feed. However, the use of straw as animal feed is limited by its low nutritional value and its low nitrogen content. Various chemical delignification methods to improve the digestibility of straw have extensively investigated (Sundstol and Owen, 1984). Biological methods of treating straw using fungi such as white-rot-fungi have also been reported (Zadrazil, 1984). The solid state fermentation (SSF) of wheat straw with white-rot fungi is a complex process which is influenced by factors such as the species of fungus, substrate, temperature and moisture (Zadrazil, 1984). The objective of this study was to investigate the effect of pre-treating the straw with urea and incubation with two species of Pleurotus fungi on the chemical composition and digestibility of wheat straw.

Nutritive value index of treated wheat straw with Pleurotus fungi fed to cow

2007 ◽  
Vol 2007 ◽  
pp. 197-197
Author(s):  
Hassan Fazaeli ◽  
Seyed Ahmad Mirhadi
Keyword(s):  
Wheat Straw ◽  
Nutritive Value ◽  
Animal Feed ◽  
White Rot Fungi ◽  
White Rot ◽  
Fungal Treatment ◽  
Voluntary Intake

Biological de-lignification of straw by white-rot fungi seems a promising way of improving its nutritive value. The bio-conversion of lignocellulosic materials is circumscribed to the group of white-rot fungi, of which some species of Pleurotus are capable of producing upgraded spent-straws as ruminant feed (Fazaeli et al., 2004). Treating of cereal straw with white-rot fungi as animal feed was studied by several workers (Gupta et al., 1993; Zadrazil, 1997). However, most of the trials were conducted at in vitro stage and used cell wall degradation and in vitro digestibility as an index to evaluate the biological treatments. This experiment was conducted to study the effect of fungal treatment on the voluntary intake, in vivo digestibility and nutritive value index of wheat straw obtained from short-term and long-term solid state fermentation (SSF).

The effect of three strains of Pleurotus on the in vitro dry matter digestibility and subsequent nutritive value of wheat straw to ruminant animals

2005 ◽  
Vol 2005 ◽  
pp. 137-137
Author(s):  
E. M. Hodgson ◽  
M. D. Hale ◽  
H. M. Omed
Keyword(s):  
Wheat Straw ◽  
Nutritive Value ◽  
Animal Feed ◽  
White Rot Fungi ◽  
Wheat Plant ◽  
Treatment Method ◽  
White Rot ◽  
Dry Matter Digestibility ◽  
Ruminant Animals

Straw constitutes a vast, valuable, and under utilised agricultural by-product, which has a great potential for utilisation as an animal feedstuff. However, due to the way in which it is constructed, the digestible sugars, cellulose and hemicelluloses, are tightly chemically bound by heavily lignified cell walls which provide the wheat plant stem with its strength and structure, but in doing so greatly inhibit the digestibility and nutritive value of the material to ruminant animals. Therefore, the utilisation of this resource as an animal feed can only be realised effectively, if the nutritional and digestibility values of the material can be improved by the innovation and successful application of an effective treatment method, be that physical, chemical or biological. Previously devised methods of upgrading the digestibility and nutritive value of forages, with the possible exception of urea treatment, have proven either insufficient, environmentally unsound, or economically infeasible to those concerned, particularly those in developing world. Therefore, there is a distinct need to develop techniques which can avoid these pitfalls and still yield the desired results in the context of animal nutrition. Previous research has indicated that members of the genus Pleurotus white rot fungi, have great potential for application in the biological upgrading of wheat straw. Therefore, the objective of this work was to investigate biological techniques, using 3 strains of Pleurotus fungi which may have the potential to be utilised in the biological upgrading of wheat straw.

scholarly journals Variation in the solubilization of crude protein in wheat straw by different white-rot fungi

2018 ◽  
Vol 242 ◽  
pp. 135-143 ◽  
Author(s):  
Nazri Nayan ◽  
Anton S.M. Sonnenberg ◽  
Wouter H. Hendriks ◽  
John W. Cone
Keyword(s):  
Wheat Straw ◽  
Crude Protein ◽  
White Rot Fungi ◽  
White Rot

scholarly journals Enzymatic saccharification of biologically pre-treated wheat straw with white-rot fungi

2010 ◽  
Vol 101 (15) ◽  
pp. 6045-6050 ◽  
Author(s):  
Albino A. Dias ◽  
Gil S. Freitas ◽  
Guilhermina S.M. Marques ◽  
Ana Sampaio ◽  
Irene S. Fraga ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Enzymatic Saccharification ◽  
White Rot Fungi ◽  
White Rot

scholarly journals Biological pretreatment of wheat straw: Effect of fungal culturing on enzymatic hydrolysis of carbohydrate polymers

2021 ◽  
Author(s):  
Aleksandar Knežević ◽  
Ivana Đokić ◽  
Tomislav Tosti ◽  
Slađana Popović ◽  
Dušanka Milojković-Opsenica ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Lignin Degradation ◽  
Enzymatic Saccharification ◽  
White Rot Fungi ◽  
Fungal Species ◽  
White Rot ◽  
Irpex Lacteus ◽  
Fungal Pretreatment ◽  
Hydrolysis Of

Abstract The aim of the study was comparative analysis of degradation of wheat straw lignin by white-rot fungi and its implications on the efficiency of enzymatic hydrolysis of holocellulose. Cyclocybe cylindracea, Ganoderma resinaceum, Irpex lacteus, Pleurotus ostreatus and Trametes versicolor were the species studied. Peroxidases were predominantly responsible for lignin degradation even though high laccase activities were detected, except in the case of Irpex lacteus where laccase activity was not detected. Studied fungal species showed various ability to degrade lignin in wheat straw which further affected release of reducing sugars during enzymatic saccharification. The highest rate of lignin degradation was noticed in sample pretreated with Irpex lacteus (50.9 ± 4.1%). Among all tested species only Ganoderma resinaceum was suitable lignin degrader with the 2-fold higher hydrolysis yield (51.1 ± 4.7%) than in the control, and could have significant biotechnological application due to lower cellulose loss. A key mechanism of carbohydrate component convertibility enhancement was lignin removal in the biomass. Long time consumption, the low sugar yields and unpredictable fungal response still remain the challenge of the fungal pretreatment process.

Effects of fungal treated wheat straw on Feed intake and growth of fattening lambs

2002 ◽  
Vol 2002 ◽  
pp. 152-152
Author(s):  
A.R. Foroughi ◽  
A. Nikkhah
Keyword(s):  
Wheat Straw ◽  
Feed Intake ◽  
Nutritive Value ◽  
Wide Spectrum ◽  
White Rot Fungi ◽  
Solid Substrate ◽  
White Rot ◽  
Oxidative Enzymes ◽  
Edible Fungi ◽  
Livestock Feed

White- rot fungi have been investigated for biological upgradation of cereal straws into livestock Feed by solid substrate fermentation (Tripathi et al. 1991). Studies showed that pleurotus sajor- cajo(PSC) grew well on wheat straw and improved nutritive value (Leng 1990), due to the presence of wide spectrum of extracellular hydrolytic and oxidative enzymes and high infiltration of the mycelium into the substrate (Kokhreidze et al,1993).The objective of this study was to examine the effect of treated wheat straw by PSC edible fungi on feed intake and daily gain of fattening male lambs.

Treatment using white rot fungi changed the chemical composition of wheat straw and enhanced digestion by rumen microbiota in vitro

2018 ◽  
Vol 237 ◽  
pp. 46-54 ◽  
Author(s):  
Dongze Niu ◽  
Sasa Zuo ◽  
Di Jiang ◽  
Pengjiao Tian ◽  
Mingli Zheng ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Wheat Straw ◽  
White Rot Fungi ◽  
White Rot ◽  
Rumen Microbiota

Screening of white-rot fungi on (14C)lignin-labelled and (14C)whole-labelled wheat straw

1985 ◽  
Vol 22 (2) ◽  
Author(s):  
Eduardo Agosin ◽  
Jean-Jacques Daudin ◽  
Etienne Odier
Keyword(s):  
Wheat Straw ◽  
White Rot Fungi ◽  
White Rot

Effect of fungal treatment on the chemical composition, in vitro digestibility and in sacco degradability of wheat straw

2003 ◽  
Vol 2003 ◽  
pp. 166-166
Author(s):  
H. Fazaeli ◽  
A. Azizi ◽  
Z. A. M. Jelan ◽  
S. A. Mirhadi
Keyword(s):  
Chemical Composition ◽  
Wheat Straw ◽  
Nutritive Value ◽  
White Rot Fungi ◽  
White Rot ◽  
In Vitro Digestibility ◽  
Fungal Treatment ◽  
In Sacco Degradability ◽  
In Sacco

Fungal treatment has been recently considered as a promising method for improving the nutritive value of straw (Zadrazil et al., 1997). Several studies have been conducted to identify species of white-rot fungi for assessing their ability to improve the nutritive value of straw (Yamakamwa et al., 1992). Since there are many species of fungi in nature, there is an interest in characterising of some species. The objectives of this experiment were to study the effect of five Pleurotus fungi on the chemical composition, in vitro digestibility and in sacco degradability of wheat straw and evaluate their effect in upgrading the nutritive value of lignicellulosic materials.

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