Degradation of chicken feathers by Aphanoascus keratinophilus and Chrysosporium tropicum strains from pellets of predatory birds and its practical aspect

Bohacz, Justyna; Korniłłowicz-Kowalska, Teresa; Kitowski, Ignacy; Ciesielska, Anita

doi:10.1016/j.ibiod.2020.104968

Cited by 26 publications

(23 citation statements)

References 20 publications

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“…However, few records are available in which fungi were used for the application of fertilizing potential of feather waste for enhancing plant growth as Chrysosporium tropicum and Malbranchea sp. (Kumar et al, 2017), Aphanoascus keratinophillus and C. tropicum (Bohacz et al, 2020). In the present study, A. tenuissima, a keratinolytic fungus was used to degrade feathers into submerged state fermentation and soil.…”

Section: Introductionmentioning

confidence: 85%

Chicken feather waste degradation by Alternaria tenuissima and its application on plant growth

Kumari

Kumar

2020

JANS

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The use of chicken as food is rising day today and as byproduct 8.5 billion tons, poultry feathers are produced worldwide, whereas India contributes about 350 million tons per annum. It is a waste product of poultry industries, are considered a potential high-quality protein supplement owing to their crude protein content of more than 85%. In the present study Alternaria tenuissima a keratinophilic fungus was used for feather degradation in submerged state fermentation and soil. Total Protein releases were studied in submerged state fermentation by A. tenuissima are 122µg/ml and 238µg/ml in 15 and 25 days respectively. Lysine, Methionine, Cysteine and Valine were found 15.8, 6.8, 20.2, 7.5 µg/ml in 25 days, respectively. Chicken feathers were mixed with soil and inoculated with spore suspension for degradation of complex keratin protein into simpler organic forms. A. tenuissima degraded feathers in soil and enhances nutritional value. Five-gram feathers in 250 g soil mixtures were found better growth enhancers and increased height. This work will reduce the solid waste generated in the form of feathers from the poultry industry, and convert it into a simpler organic form that can be used by plants.

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Section: Introductionmentioning

confidence: 85%

Chicken feather waste degradation by Alternaria tenuissima and its application on plant growth

Kumari

Kumar

2020

JANS

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“…Keratinolytic fungi have been reported as the natural colonizers of keratinous substrates and play a major role in the natural hydrolysis of keratinized tissues (Bohacz et al, 2020). Aspergillus, Paecilomyces, Doratomyces, Trichoderma, Fusarium, Acremonium, Onygena, Cladosporium, Microsporum, Lichtheimia, Chrysosporium, Aphanoascus, Trichophyton, and Scopulariopsis are among the reported keratinolytic fungi (Gradišar et al, 2000(Gradišar et al, , 2005Sharma et al, 2011;Paul et al, 2014a;Sousa et al, 2015;Bagewadi et al, 2018;Abirami et al, 2020;Bohacz et al, 2020). Among the fungal strains, keratinolytic activity has been extensively reported within the confines of the dermatophytes.…”

Section: Fungal Sourcesmentioning

confidence: 99%

“…The exudation of keratinase offers microbes the opportunity to utilize a broad spectrum of proteinaceous substrates, thus promoting organic matter recycling in all ecological milieu (Bohacz and Korniłłowicz-Kowalska, 2019). The benefit conferred by keratinase producers to the environment includes the provision of assimilable nutrients through the dismemberment of keratinous biomass into bioavailable and utilizable units (Bohacz et al, 2020). The bio-decomposition process significantly promotes soil fertility via the supply, slow but regular release of organic nitrogenous compounds (Nafady et al, 2018).…”

Section: Environmental Impact Of Keratinous Waste and The Ecological mentioning

confidence: 99%

“…Conversely, indiscriminate damage to proteinaceous component of cells and tissues by exuded keratinase may constitute another form of bio-hazard if it occurs in an unprecedented manner. However, limited manifestations have been reported on some pathogenic fungi that inhabit skin, causing mycosis and fur or hair grass-roots removal; and some dermatophytes including Arthroderma, Microsporum, Trichophyton, and Chrysosporium group have been in the fore (Huang et al, 2015;Bohacz et al, 2020).…”

Section: Environmental Impact Of Keratinous Waste and The Ecological mentioning

confidence: 99%

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Microbial Keratinase: Next Generation Green Catalyst and Prospective Applications

et al. 2020

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The search for novel renewable products over synthetics hallmarked this decade and those of the recent past. Most economies that are prospecting on biodiversity for improved bio-economy favor renewable resources over synthetics for the potential opportunity they hold. However, this field is still nascent as the bulk of the available resources are non-renewable based. Microbial metabolites, emphasis on secondary metabolites, are viable alternatives; nonetheless, vast microbial resources remain under-exploited; thus, the need for a continuum in the search for new products or bio-modifying existing products for novel functions through an efficient approach. Environmental distress syndrome has been identified as a factor that influences the emergence of genetic diversity in prokaryotes. Still, the process of how the change comes about is poorly understood. The emergence of new traits may present a high prospect for the industrially viable organism. Microbial enzymes have prominence in the bio-economic space, and proteases account for about sixty percent of all enzyme market. Microbial keratinases are versatile proteases which are continuously gaining momentum in biotechnology owing to their effective bio-conversion of recalcitrant keratin-rich wastes and sustainable implementation of cleaner production. Keratinase-assisted biodegradation of keratinous materials has revitalized the prospects for the utilization of cost-effective agro-industrial wastes, as readily available substrates, for the production of high-value products including amino acids and bioactive peptides. This review presented an overview of keratin structural complexity, the potential mechanism of keratin biodegradation, and the environmental impact of keratinous wastes. Equally, it discussed microbial keratinase; vis-à-vis sources, production, and functional properties with considerable emphasis on the ecological implication of microbial producers and catalytic tendency improvement strategies. Keratinase applications and prospective high-end use, including animal hide processing, detergent formulation, cosmetics, livestock feed, and organic fertilizer production, were also articulated.

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“…3.4.99.11), которые продуцируются многими бактериями, актиномицетапми и грибами. Кератиназы являются преимущественно внеклеточными сериновыми или металло-сериновыми протеазами (Onifade et al, 1998;Gradisar et al, 2005;Brandelli, 2008;Bohacz et al, 2020). Они обладают широкой субстратной специфичностью с оптимумом действия в диапазоне рН 3-9.…”

Section: кормопроизводство кормление с/х животныхunclassified

Proteases in the diet of monogastric animals

Крюков¹,

Зиновьев

Некрасов³

2021

Agrarnaâ nauka

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There are many proteases, and about 2% of the human genome is involved in the regulation of their formation. The share of proteases involved in digestion accounts for only a small part. Despite this, the mechanisms of action of digestive proteases are less studied than carbohydrases and lipases. The incorporation of exogenous proteases into young animal feeds is often accompanied by improved utilization of protein and other nutrients. Exogenous proteases degrade inhibitors of the endogenous protease and lectins in feed. Alkaline proteases are of interest due to their broader substrate specificity and activity throughout the entire gastrointestinal tract. This group includes keratinases, which digest proteins inaccessible for cleavage by proteases and peptidases of animals. Keratinases digest agglutinins, glycinin and b-conglycinin and connective tissue proteins, which are resistant to the action of gastrointestinal enzymes and a number of exogenous proteases. The alleged reasons for the inconsistent results when using feed proteases are described. Their mediated positive effects not associated with proteolysis are indicated. It is advisable to use proteases with keratinolytic activity as fodder proteases.

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Degradation of chicken feathers by Aphanoascus keratinophilus and Chrysosporium tropicum strains from pellets of predatory birds and its practical aspect

Cited by 26 publications

References 20 publications

Chicken feather waste degradation by Alternaria tenuissima and its application on plant growth

Chicken feather waste degradation by Alternaria tenuissima and its application on plant growth

Microbial Keratinase: Next Generation Green Catalyst and Prospective Applications

Proteases in the diet of monogastric animals

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