Characteristics of Pleurotus sp. TD36 and its ability to reduce wood extractives in pretreatment for pulping

Thao, Phan Thi Hong; Lien, Nguyen Thi Hong; Hiếu, Nguyễn Văn; Linh, Nguyen Vu Mai; Nhung, Dang Thi; Huong, Tran Thi; Son, Cao Van

doi:10.1007/s00107-021-01687-1

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…Their experiments removed up to 51% of resin acids and up to 87% of free fatty acids from pine wood within two weeks, while total loss of wood mass was below 12% [122]. Similar findings were published by Thao et al [123], who removed up to 89% of fatty acids and fatty alcohols and 79% of free sterols from acacia wood within 30 days by means of a white-rot fungus. Košíková et al [124] investigated four yeast strains concerning their wood extractives removal behavior.…”

Section: Wood Storage and Biological Treatmentsupporting

confidence: 83%

Removal of wood extractives as pulp (pre-)treatment: a technological review

2021

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Wood extractives usually do not exceed five percent of dry wood mass but can be a serious issue for pulping as well as for the pulp itself. They cause contamination and damages to process equipment and negatively influence pulp quality. This paper addresses not only the extractives-related problems but also different solutions for these issues. It is an extensive review of different technologies for removing wood extractives, starting with methods prior to pulping. Several wood yard operations like debarking, knot separation, and wood seasoning are known to significantly decreasing the amount of wood extractives. Biological treatment has also been proven as a feasible method for reducing the extractives content before pulping, but quite hard to handle. During pulping, the extractives reduction efficiency depends on the pulping method. Mechanical pulping removes the accessory compounds of wood just slightly, but chemical pulping, on the other hand, removes them to a large extent. Organosolv pulping even allows almost complete removal of wood extractives. The residual extractives content can be significantly reduced by pulp bleaching. Nevertheless, different extraction-based methods have been developed for removing wood extractives before pulping or bleaching. They range from organic-solvent-based extractions to novel processes like supercritical fluid extractions, ionic liquids extractions, microwave technology, and ultrasonic-assisted extraction. Although these methods deliver promising results and allow utilization of wood extractives in most cases, they suffer from many drawbacks towards an economically viable industrial-scale design, concluding that further research has to be done on these topics. Graphical abstract

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Section: Wood Storage and Biological Treatmentsupporting

confidence: 83%

Removal of wood extractives as pulp (pre-)treatment: a technological review

2021

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Pleurotus pulmonarius: a protease-producing white rot fungus in lignocellulosic residues

et al. 2022

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Characterization of arsenic-resistant endophytic Priestia megaterium R2.5.2 isolated from ferns in an arsenic-contaminated multi-metal mine in Vietnam

Nguyen

Thanh²,

Văn

et al. 2022

J Exp Bio & Ag Sci

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Bioremediation is a biological process to remove or neutralize environmental pollutants. This study was carried out to investing at the efficacy of arsenic resistant endophytic bacteria isolated from Pteris vittata, Pityrogramma calomelanos, Blenchum orientale, and Nephrolepis exaltata, which grow in a highly arsenic (As) contamination mining site in Vietnam. Their segmented roots, stems, and leaves were homogenized separately and inoculated on LB agar plates containing 5mM As(III) and As(V). A total of 31 arsenic resistant endophytic strains were selected, in which strain R2.5.2 isolated from the root of P. calomelanos had the highest arsenic resistant capability. Strain R2.5.2 tolerated up to 320 mM and 160 mM of arsenate and arsenite, respectively. The strain developed well on a media of 0.1 5% NaCl, at 20-40ºC and pH 5 9, and actively utilized most of the sugar sources. It had a high IAA biosynthesis capacity with an average concentration of 19.14 mg/L, tolerated to 0.5-16 mM concentration of Ag+, Hg2+, Co2+, Ni2+, Cu2+, Cr4+, and reduced As(V). Based on 16s rDNA, R2.5.2 was identified as Priestia megaterium. The ars C gene coding for arsenate reductase catalyzing reduction of As(V) was successfully amplified in P. megaterium R2.5.2. The selected strain may have potential use for bioremediation practice.

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Characteristics of Pleurotus sp. TD36 and its ability to reduce wood extractives in pretreatment for pulping

Cited by 3 publications

References 23 publications

Removal of wood extractives as pulp (pre-)treatment: a technological review

Removal of wood extractives as pulp (pre-)treatment: a technological review

Pleurotus pulmonarius: a protease-producing white rot fungus in lignocellulosic residues

Characterization of arsenic-resistant endophytic Priestia megaterium R2.5.2 isolated from ferns in an arsenic-contaminated multi-metal mine in Vietnam

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