Chicken feather waste-derived protein hydrolysate as a potential biostimulant for cultivation of mung beans

Kaur, Manpreet; Bhari, Ranjeeta; Singh, Ram Sarup

doi:10.1007/s11756-021-00724-x

Cited by 29 publications

(8 citation statements)

References 46 publications

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“…Keratin-based biofilms possess high biodegradability, compared to native fur and hair. The degraded keratin can serve as a C and N source for soil micro-organisms [ 140 , 141 , 142 ]; in particular, the degraded keratin can strengthen the soil respiration of micro-organisms, as well as adjust the pH and expand the cation exchange capacity of the soil. Based on this, keratin-based biofilms have great potential for conversion into biofertilisers.…”

Section: Functional Properties Of Keratin-based Filmsmentioning

confidence: 99%

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Wang

Tong

2022

Polymers

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The recycling, development, and application of keratin-containing waste (e.g., hair, wool, feather, and so on) provide an important means to address related environmental pollution and energy shortage issues. The extraction of keratin and the development of keratin-based functional materials are key to solving keratin-containing waste pollution. Keratin-based biofilms are gaining substantial interest due to their excellent characteristics, such as good biocompatibility, high biodegradability, appropriate adsorption, and rich renewable sources, among others. At present, keratin-based biofilms are a good option for various applications, and the development of keratin-based biofilms from keratin-containing waste is considered crucial for sustainable development. In this paper, in order to achieve clean production while maintaining the functional characteristics of natural keratin as much as possible, four important keratin extraction methods—thermal hydrolysis, ultrasonic technology, eco-friendly solvent system, and microbial decomposition—are described, and the characteristics of these four extraction methods are analysed. Next, methods for the preparation of keratin-based biofilms are introduced, including solvent casting, electrospinning, template self-assembly, freeze-drying, and soft lithography methods. Then, the functional properties and application prospects of keratin-based biofilms are discussed. Finally, future research directions related to keratin-based biofilms are proposed. Overall, it can be concluded that the high-value conversion of keratin-containing waste into regenerated keratin-based biofilms has great importance for sustainable development and is highly suggested due to their great potential for use in biomedical materials, optoelectronic devices, and metal ion detection applications. It is hoped that this paper can provide some basic information for the development and application of keratin-based biofilms.

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Section: Functional Properties Of Keratin-based Filmsmentioning

confidence: 99%

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Wang

Tong

2022

Polymers

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“…Quality indicators of the wheat grains produced by treated plants, such as protein content and Zeleny sedimentation index, were also improved. Keratin hydrolysate produced by Bacillus aerius NSMk2 (bacterial metabolites) enhanced mung beans ( Vigna radiata ) growth (better germination and better plant growth) and development (more flowers, more pods, and more seeds) [ 164 ]. Keratin hydrolysate produced by two Trichoderma strains showed an activation of the proton pump (and, therefore, stimulation of nutrient uptake by roots) and promoted the development of the tomato ( Solanum lycopersicum ) seedlings [ 29 ].…”

Section: Applications Of Extracted Keratinmentioning

confidence: 99%

Closing the Loop with Keratin-Rich Fibrous Materials

et al. 2021

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One of the agro-industry’s side streams that is widely met is the-keratin rich fibrous material that is becoming a waste product without valorization. Its management as a waste is costly, as the incineration of this type of waste constitutes high environmental concern. Considering these facts, the keratin-rich waste can be considered as a treasure for the producers interested in the valorization of such slowly-biodegradable by-products. As keratin is a protein that needs harsh conditions for its degradation, and that in most of the cases its constitutive amino acids are destroyed, we review new extraction methods that are eco-friendly and cost-effective. The chemical and enzymatic extractions of keratin are compared and the optimization of the extraction conditions at the lab scale is considered. In this study, there are also considered the potential applications of the extracted keratin as well as the reuse of the by-products obtained during the extraction processes.

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“…Studies showed that biofertilizer produced by full-cell hydrolysis of feather waste using Bacillus aerius NSMk2 and minimal salt medium with chicken feather as sole carbon source (3 days, at 35 °C, pH 7.5), stimulated germination of seeds and further growth of mung beans ( Vigna radiata ) when supplemented to the soil [ 147 ]. Similar observations were noted with activation of proton pump when tomato ( Solanum lycopersicum ) seedlings were cultivated in a soil enriched with keratin-based fertilizers, obtained by Trichoderma asperellum T50 and T. atroviride full-cell hydrolysis of wool or feathers conducted on minimal medium (0.5 g/L NaH 2 PO 4 , 0.5 g/L KH 2 PO 4 , 0.016 g/L FeCl 3 , 0.1 g/L CaCl 2 , 0.01 g/L MgCl 2 ) with 1% w / w of keratin substrates for 21 days at around 26 °C and pH 7.0 [ 148 ].…”

Section: Applicationmentioning

confidence: 99%

Keratinases as Versatile Enzymatic Tools for Sustainable Development

2021

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To reduce anthropological pressure on the environment, the implementation of novel technologies in present and future economies is needed for sustainable development. The food industry, with dairy and meat production in particular, has a significant environmental impact. Global poultry production is one of the fastest-growing meat producing sectors and is connected with the generation of burdensome streams of manure, offal and feather waste. In 2020, the EU alone produced around 3.2 million tonnes of poultry feather waste composed primarily of keratin, a protein biopolymer resistant to conventional proteolytic enzymes. If not managed properly, keratin waste can significantly affect ecosystems, contributing to environmental pollution, and pose a serious hazard to human and livestock health. In this article, the application of keratinolytic enzymes and microorganisms for promising novel keratin waste management methods with generation of new value-added products, such as bioactive peptides, vitamins, prion decontamination agents and biomaterials were reviewed.

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Chicken feather waste-derived protein hydrolysate as a potential biostimulant for cultivation of mung beans

Cited by 29 publications

References 46 publications

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Preparation Methods and Functional Characteristics of Regenerated Keratin-Based Biofilms

Closing the Loop with Keratin-Rich Fibrous Materials

Keratinases as Versatile Enzymatic Tools for Sustainable Development

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