Biodegradation of feather waste keratin by a keratinolytic soil fungus of the genus Chrysosporium and statistical optimization of feather mass loss

Bohacz, Justyna

doi:10.1007/s11274-016-2177-2

Cited by 67 publications

(48 citation statements)

References 42 publications

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“…Table 3 and Figure 1 show that the high keratinase activity as a clear zone around the colony (54, 65, 50, 58 and 60 mm) ( 25,18,20,25,15,23 and 21 mm), respectively. While Alternaria alternate and Curvularia lunata had negative keratinase activity The results agree to some extend with previous findings (Anbu et al, 2008;Awasthi and Kushwaha, 2011;Ramakrishnaiah et al, 2013;Kumar and Kushwaha, 2014;Singh, 2014;Singh et al, 2016;Bohacz, 2017).…”

Section: Saprophytic Fungi (Using Glucose-czapek's Agar)supporting

confidence: 91%

Mycoflora associated with the goats hair and sheep wool in Taif, Saudi Arabia

Awad¹

2017

Afr. J. Microbiol. Res.

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The objective of this study was to evaluate the occurrence of mycoflora in 30 samples of healthy goat's hair and sheep wool collected from different localities in Taif, Saudi Arabia, and the ability of some fungal isolates for keratinase activities. Sixty four species belonging to 28 genera were collected from the two substrates. The wool of sheep was polluted with fungi than goat hairs, and contained high total counts and number of fungal genera and species. Nine species of true dermatophytes isolated belonged to Microsporum (3 species) and Trichophyton (6 species). Several keratinophilic species were isolated of which, Chrysosporium indicum, Chrysosporium keratinophilum and Chrysosporium tropicum were the most prevalent. The commonest saprophytes in order of frequency were members of the genera, Aspergillus, Penicillium, Alternaria and Cochliobolus. In addition, the other genera found included Acremonium, Chaetomum, Cladosporium, Cochliobolus, Fusarium, Mucor, Paecilomyces, Phoma, Rhizopus, Scopulariopsis, Stachybotrys, Trichoderma and others. Five species from 20 tested isolates (Aspergillus niger, C. keratinophilum, C. tropicum, Microsporum gypseum and Trichoderma viride) had high keratinase activity. The results of this study indicate that both goat hair and sheep wool provide a suitable habitat for dermatophytes and other keratinophilic fungi. Most of these fungi play an important role in the degradation of keratin substrates, so that they can help preserve the environment and reduce pollution.

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Section: Saprophytic Fungi (Using Glucose-czapek's Agar)supporting

confidence: 91%

Mycoflora associated with the goats hair and sheep wool in Taif, Saudi Arabia

Awad¹

2017

Afr. J. Microbiol. Res.

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“…These keratin substrates exhibited low degradation by Fusarium oxysporum (16.66%). Bohacz (2017) reported the ability of strains of Aphanoascus fulvescens and Chrysosporium articulatum isolated from soil (phaesol) to degrade native feather keratin. According to them, keratinophilic fungi exhibit the keratinolytic activity against native feather keratin.…”

Section: Discussionmentioning

confidence: 99%

Chrysosporium queenslandicum: a potent keratinophilic fungus for keratinous waste degradation

Kumawat¹,

Sharma²,

Bhadauria³

2017

Int J Recycl Org Waste Agricult

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Purpose Keratinous wastes are the solid environmental pollutant generated from poultry farms, slaughterhouses and barber's shops. The aim of the present study is the degradation of keratinous wastes in an eco-friendly way by biological methods, which should further be helpful to reduce the wastes and recycled into valuable feed and fertilizers. Methods Degradation of keratinous substrates was assessed by highly potent keratinophilic fungi, namely Chrysosporium queenslandicum TKKASb Apinis and R.G. Rees. This chicken feather degrading fungal strain previously isolated and identified by morphological and 18 s rDNA sequencing in laboratory, was used in the present study. Ch. queenslandicum was inoculated into the basal salt medium (BSM) with keratinous substrates for 12 and 24 days at 28 ± 2°C to observe degradation. The rate of degradation was expressed as weight loss of keratin substrate over incubation days and pH variation. Results In this study, Ch. queenslandicum showed maximum degradation on chicken feathers followed by human nail clippings, animal hair and human hair. The degradation rate on chicken feather was 38.40 ± 0.80 and 46.40 ± 2.50% after 12 and 24 days, respectively. The basal salt medium's pH was increased over incubation time. Scanning electron microscopy (SEM) examination also demonstrated the degradation of chicken feathers. Conclusions The results suggest that Ch. queenslandicum possess the potential biotechnological applications which can be used in the hydrolysis of keratinous waste and recycling of poultry waste for environmental protection. The hydrolyzed keratinous material can also be utilized as the source of fertilizers for plants and feed for animals.

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“…the roots of the plant, proving the ability of this species to control nematodes. The genus Chrysosporium is normally present in the soil, acting as a saprophyte with wide distribution, being a producer of metabolites such as enzymes and antimicrobials (Bohacz, 2017;Bojanich;Basualdo;Giusiano, 2018).…”

Section: Dmentioning

confidence: 99%

Fungal and bacterial population from spent mushroom substrate used to cultivate tomato plants

et al. 2020

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The production of tomato seedlings is conducted on commercial substrates with adequate properties for the good formation of the aerial part and root. The Spent Mushroom Substrate, or SMS, presents advantages over commercial substrates regarding the quality of the vegetable seedlings, which may be provided by the presence of a rich microbiota, bringing higher balance and competition with pathogenic microorganisms, in addition to the biological control of pathogens and nematodes. It is important to know the microbiota present in this material and its relation to the plant, in order for this association to occur in the best manner possible. This work had the objective of identifying the microbiota present in the rhizosphere of tomato seedlings produced in SMS of Agaricus subrufescens and Agaricus bisporus mushrooms, added or not with commercial substrate. The microbiota was analyzed by DGGE and the representative samples were sequenced in order to identify the species. Among the eukaryotes, the Chaetomium globosum, Arthrobotrys amerospora species were predominant in the A. subrufescens SMS, and Geastrum floriforme, Chrysosporium chiropterum, Pleurotus sp., and Trichosporon sp. in the A. bisporus SMS. Prokaryotes are the most diverse group, suggesting a large number of species not yet classified or which sequences are not yet available.

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Biodegradation of feather waste keratin by a keratinolytic soil fungus of the genus Chrysosporium and statistical optimization of feather mass loss

Cited by 67 publications

References 42 publications

Mycoflora associated with the goats hair and sheep wool in Taif, Saudi Arabia

Mycoflora associated with the goats hair and sheep wool in Taif, Saudi Arabia

Chrysosporium queenslandicum: a potent keratinophilic fungus for keratinous waste degradation

Fungal and bacterial population from spent mushroom substrate used to cultivate tomato plants

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