scholarly journals Hygric properties of Norway spruce and sycamore after incubation with two white rot fungi

Holzforschung ◽  
2015 ◽  
Vol 69 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Marjan Sedighi Gilani ◽  
Francis W.M.R. Schwarze
Keyword(s):  
Norway Spruce ◽  
Neutron Radiography ◽  
Growth Ring ◽  
White Rot Fungi ◽  
Moisture Sorption ◽  
White Rot ◽  
Chemical Components ◽  
Fungal Treatment ◽  
Dynamic Vapor Sorption ◽  
Hygroscopic Properties

Abstract In this study, changes in the hygroscopic properties of two main wood species for violin making, Norway spruce and sycamore, after treatment with Physisporinus vitreus and Xylaria longipes were investigated. Swelling and moisture sorption capacity of wood at the growth ring scale were visually and quantitatively assessed by thermal neutron radiography analysis. It was demonstrated that the fungal treatment improved the dimensional stability of both Norway spruce and sycamore, but also increased their moisture adsorption capacity. Dynamic vapor sorption tests and measurements of the changes in dimensions of the specimens in the laboratory were in good agreement with the results of neutron radiography analysis. The main difference between the moisture sorption of the untreated controls and treated wood was observed at high relative humidity, e.g., above 75%. The contradictory behavior of the increased hygroscopicity and reduced swelling was explained by selective degradation of the chemical components and condensation of the moisture content gained in the capillary voids that developed in the cell walls during fungal decay.

scholarly journals Evaluation of Compressive Strength of Decayed Wood in Magnolia obovata

2010 ◽  
Vol 36 (2) ◽  
pp. 81-85
Author(s):  
Kahoru Matsumoto ◽  
Futoshi Ishiguri ◽  
Kazuya Iizuka ◽  
Shinso Yokota ◽  
Naoto Habu ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Early Stage ◽  
White Rot Fungi ◽  
Brown Rot ◽  
Soft Rot ◽  
White Rot ◽  
Chemical Components ◽  
Cellulose Content ◽  
Magnolia Obovata ◽  
Weight Loss Ratio

To obtain the basic information needed to estimate the degree of decay from compressive strength measured using a Fractometer (CS), relationships between CS and the contents of chemical components were analyzed for Magnolia wood decayed by three types fungi (brown rot, white rot, and soft rot fungi) at various decay levels. Weight loss ratio was significantly, negatively correlated with CS in woods decayed by brown rot and white rot fungi. In addition, a relatively high correlation coefficient was recognized between CS and holocellulose or α-cellulose content, except for wood decayed by soft rot fungus. The results obtained showed that Fractometer can detect the decrease of CS at relatively early stage of decay.

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).

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.

scholarly journals Bioremediation of Indigosol Blue 04B Batik Effluent by Indigenous Fungal Isolates, Aspergillus spp.

Omni-Akuatika ◽  
2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Ratna Stia Dewi ◽  
Rina Sri Kasiamdari ◽  
Erni Martani ◽  
Yekti Asih Purwestri
Keyword(s):  
Culture Media ◽  
Electrical Conductance ◽  
Oxygen Demand ◽  
White Rot Fungi ◽  
Positive Control ◽  
White Rot ◽  
Fungal Treatment ◽  
Before And After ◽  
Standard Values ◽  
Aspergillus Sp

Effluent from the local batik home industry is a serious problem, because the effluent discharge generated is spread in different places. Untreated effluent can cause environmental pollution, such as in groundwater reservoirs,because most is discharged into rivers. The aim of this research was to evaluate the bioremediation potential of indigenous fungi in liquid culture media with Indigosol Blue 04B (IB) batik effluent. The fungi isolates tested were Aspergillus sp. 1, Aspergillus sp. 2 and Aspergillus sp. 3, isolated from dye effluent soil and batik effluent, and compared to white rot fungi (Phanerochaete chrysosporium) as a positive control.   The physiochemical properties of IB batik effluent before and after fungal treatment were investigated. All of these parameters before the fungal treatment were above the recommended standard values based on the Governor regulation of Yogyakarta Special Region No. 7/2010. The level of biochemical oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids (TDS), total suspended solids (TSS), and electrical conductance (EC) was reduce by Aspergillus spp. The highest percentage reduction was achieved by Aspergillus sp. 3, namely 88.34% BOD, 89.11% COD, 75.77% TSS, 85.85% TDS and 71.21% EC, after 3 days of incubation. These results show that the positive control isolate had the lowest value. The study confirms the ability of indigenous fungi isolates in the remediation of IB batik effluent and their potential for future analysis in the treatment of all types of batik effluent.

Mechanical properties and chemical composition of beech wood exposed for 30 and 120 days to white-rot fungi

Holzforschung ◽  
2015 ◽  
Vol 69 (5) ◽  
pp. 587-593 ◽  
Author(s):  
Ehsan Bari ◽  
Hamid Reza Taghiyari ◽  
Behbood Mohebby ◽  
Carol A. Clausen ◽  
Olaf Schmidt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Beech Wood ◽  
White Rot Fungi ◽  
White Rot ◽  
Chemical Components ◽  
Fungal Decay ◽  
Oriental Beech ◽  
Impact Bending ◽  
Decay Tests

Abstract The effects of exposing specimens of Oriental beech [Fagus sylvatica subsp. orientalis (Lipsky) Greuter and Burdet] to the white-rot fungi Pleurotus ostreatus (Jacq.: Fr.) Kummer and Trametes versicolor (L.: Fr.) Pilát strain 325 have been studied concerning the mechanical properties and chemical composition in terms of carbohydrates, cellulose, and lignin. Biological decay tests were carried out in accordance with the EN 113 standard specifications for 30 and 120 days. P. ostreatus had nearly the same deteriorating effects on the mechanical properties and chemical composition as that caused by T. versicolor. High and significant correlations were found between some mechanical properties with chemical components; for instance, the correlation coefficient (R2) between impact bending and carbohydrate content was about 0.96. The changes of components influence the various mechanical properties to a different degree. Incipient fungal decay caused severe changes for impact bending and carbohydrate loss. Several other properties declined at 120-day exposure time, such as the hardness, compression strength parallel to grain, and cellulose and lignin losses.

scholarly journals Removal of two cytostatic drugs: bleomycin and vincristine by white-rot fungi – a sorption study

2021 ◽  
Author(s):  
Marcelina Jureczko ◽  
Wioletta Przystaś
Keyword(s):  
Fungal Biomass ◽  
New Technologies ◽  
Ph Value ◽  
White Rot Fungi ◽  
Sorption Process ◽  
White Rot ◽  
Cytostatic Drugs ◽  
Fungal Treatment ◽  
Drug Concentrations ◽  
Sorption Ability

Abstract Purpose Cytostatic drugs cannot be easily removed by conventional sewage treatment plants, resulting in their ultimate release into aquatic systems where they become a threat. Thus, new technologies which can be used to eliminate these drugs more effectively before they enter the environment are increasingly important. Fungal treatment of wastewaters is a promising and environmentally friendly technology for pharmaceutical remediation. The aim of this work is to examine the biosorption of two cytostatics, bleomycin and vincristine, in the aqueous solution by fungal biomass. Methods Five white-rot fungi were used in this study: Fomes fomentarius (CB13), Hypholoma fasciculare (CB15), Phyllotopsis nidulans (CB14), Pleurotus ostreatus (BWPH), and Trametes versicolor (CB8). Tests were conducted on different types of biomass (alive and dead – autoclaved) and in various physico-chemical conditions: varied drug concentrations (5, 10 and 15 mg/L), temperatures (from 15.4 to 29.6 °C), and pH (from 3.2 to 8.8). Results The results showed that among alive biomass, T. versicolor (CB8) had the greatest sorption ability for bleomycin and P. nidulans (CB14) worked best for vincristine. The tested sorption process could be described by a pseudo-second order kinetics model. Sorption equilibrium studies demonstrated that for bleomycin Redlich-Peterson, while for vincristine Langmuir model fitted best. The thermodynamic studies showed that the sorption process was endothermic chemisorption for bleomycin, and exothermic physisorption for vincristine. For both drugs the sorption ability increased with an increase of the pH value. Conclusion The biosorption on fungal biomass is a favorable alternative to conventional wastewater treatment processes for anticancer drug removal.

Influence of the co-fungal treatment with two white rot fungi on the lignocellulosic degradation and thermogravimetry of corn stover

2011 ◽  
Vol 46 (9) ◽  
pp. 1767-1773 ◽  
Author(s):  
Fuying Ma ◽  
Jinjin Wang ◽  
Yelin Zeng ◽  
Hongbo Yu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Corn Stover ◽  
White Rot Fungi ◽  
White Rot ◽  
Fungal Treatment

scholarly journals Carbon Dioxide and Methane Formation in Norway Spruce Stems Infected by White-Rot Fungi

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 3304-3325 ◽  
Author(s):  
Ari Hietala ◽  
Peter Dörsch ◽  
Harald Kvaalen ◽  
Halvor Solheim
Keyword(s):  
Carbon Dioxide ◽  
Norway Spruce ◽  
White Rot Fungi ◽  
White Rot ◽  
Methane Formation

scholarly journals Resistance of thermo-hygro-mechanically (THM) densified wood to degradation by white rot fungi

Holzforschung ◽  
2009 ◽  
Vol 63 (5) ◽  
Author(s):  
Oleksandr Skyba ◽  
Peter Niemz ◽  
Francis W.M.R. Schwarze
Keyword(s):  
Norway Spruce ◽  
Cell Walls ◽  
Treated Wood ◽  
White Rot Fungi ◽  
Hyphal Growth ◽  
White Rot ◽  
Densified Wood ◽  
Weight Losses ◽  
Spruce Wood ◽  
Different Temperatures

AbstractColonisation and degradation by the white rot fungi,Trametes versicolorandT. pubescens, were studied in wood of Norway spruce and beech subjected to three different treatments: (1) hygro-thermal treatment (160°C and 180°C), (2) mechanical densification, and (3) thermo-hygro-mechanical (THM) treatment including densification and post-treatment at different temperatures (140°C, 160°C and 180°C). The weight losses induced by the fungi were lowest in THM-densified woods. However, volume related numerical indicators for decay susceptibility did not show any significant improvements of THM-densified woods against both fungi. Analysis of the chemical composition of treated wood species revealed slight alterations in the content of polysaccharides and lignin. White rot fungi circumvented conditions restricting hyphal growth within the occluded tracheid lumina by hyphal tunnelling in the secondary walls of fibre tracheids in beech or by forming bore holes that transversally penetrated cell walls of earlywood tracheids in THM-densified spruce. The studies indicate that THM-densified beech and Norway spruce wood may have some potential in utility class 3 but are inappropriate for use in utility class 4.

Sign in / Sign up

Export Citation Format

Share Document