Optimization of keratin protein extraction from waste chicken feathers using hybrid pre-treatment techniques

Fagbemi, Olajumoke D.; Sitholé, Bruce; Tesfaye, Tamrat

doi:10.1016/j.scp.2020.100267

Cited by 52 publications

(29 citation statements)

References 13 publications

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“…By focusing on the physical and chemical structures and properties of feather keratin, researchers might be able to develop some economically feasible applications for the increasingly large amount of chicken feather waste generated daily 13 , 14 . Functional keratin has been extracted from chicken feather using various methods ranging from chemical 15 , 16 , enzymatic 17 and with ionic solutions 18 . The properties of the extracted keratin has been shown to be a function of the method of extraction method.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of keratin starch biocomposite film from chicken feather waste and ginger starch

Oluba

Chibugo

Akpor

et al. 2021

Sci Rep

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The disposal of chicken feather through burning or burying is not environmentally compliant due to the accompanying release of greenhouse gas and underground water contamination. Thus, the transformation of this bio-waste into a bio-composite film is considered not only a sustainable strategy for disposal of this solid wastes but also an attractive alternative to developing an efficient nanostructured biomaterial from renewable bio resource. In the present study keratin extracted from chicken feather waste in combination with ginger starch were fabricated into a bio-composite film. The fabricated bio-composite films were characterized, using different analytical techniques. The physicochemical characteristics of ginger starch showed a moisture content of 33.8%, pH of 6.21, amylose and amylopectin contents of 39.1% and 60.9%, respectively. The hydration capacity of the starch was 132.2% while its gelatinization temperature was 65.7 °C. Physical attributes of the bio-composite film, such as surface smoothness and tensile strength increased significantly (p < 0.05) with increasing keratin content, while its transparency and solubility showed significant (p < 0.05) decrease with increasing keratin level. The various blends of the bio-composite films decayed by over 50% of the original mass after 12 days of complete burial in soil. Based on the results obtained in this study, the addition of keratin to starch bio-composite showed remarkable improvement in mechanical properties, such as tensile strength and surface smoothness. The bio-composite film exhibited appropriate stability in water, although future study should be carried out to evaluate its thermal stability. Nonetheless, the fabricated keratin-starch bio-composite showed desirable characteristics that could be optimized for industrial applications.

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Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of keratin starch biocomposite film from chicken feather waste and ginger starch

Oluba

Chibugo

Akpor

et al. 2021

Sci Rep

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“…In the range of wave number 2800 ÷ 3000 cm −1 , there are bands from of stretching vibrations within a group–CH in the soft segments formed from polyols [ 56 , 57 , 58 ].…”

Section: Resultsmentioning

confidence: 99%

“…In all analyzed samples were also observed bands derived from bond vibrations of C = O (1728, 1711, 1664, 1658, and 1650 cm −1 ), C = C from aromatic ring (1597 cm −1 ) bending and deformation vibrations derived from N–H bonds within HNC = O (1534 and 1512 cm −1 ), H3C–C (1450 cm −1 ), –O–CH2 (1411 cm −1 ) and νasym CO/sym within the group–NCO–O (1230 and 921 cm −1 ) in–C–O–C–group [ 56 ]. In the range around 756 cm −1 , the band represents a C–H bond from the aromatic ring.…”

Section: Resultsmentioning

confidence: 99%

Viscoelastic Polyurethane Foam with Keratin and Flame-Retardant Additives

et al. 2021

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Viscoelastic polyurethane (VEPUR) foams with increased thermal resistance are presented in this article. VEPUR foams were manufactured with the use of various types of flame retardant additives and keratin fibers. The structure of the modified foams was determined by spectrophotometric-(FTIR), thermal-(DSC), and thermogravimetric (TGA) analyses as well as by scanning electron microscopy (SEM). We also assessed the fire resistance, hardness, and comfort coefficient (SAG factor). It was found that the use of keratin filler and flame retardant additives changed the foams’ structure and properties as well as their burning behavior. The highest fire resistance was achieved for foams containing keratin and expanding graphite, for which the reduction in heat release rate (HRR) compared to VEPUR foams reached 75%.

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“…The high stability, resistance, and insolubility of keratin are due to the network structure created by the numerous strong, covalent disulfide bonds between thiol (-SH) groups contained in cysteine residues, within and between polypeptides of keratin [ 10 , 23 , 29 , 30 , 31 ]. The formed structure induces compactness to keratin, because of the network created by the adjacent polypeptides and sulfur–sulfur cross-links [ 17 , 32 , 33 ]. On the other hand, these disulfide linkages avoid releasing some helpful amino acids and short peptides found in keratin [ 34 , 35 ].…”

Section: Composition and Structure Of Keratinmentioning

confidence: 99%

“…Transforming the ovine skins and bovine hides into leather caused about 2 × 10 5 tons of hair and 5.6 × 10 4 tons of wool per year [ 15 , 16 ], while domains such as textile and apparels generate 2.5 million tons of keratinous wastes yearly, in the form of waste and used wool materials [ 12 ]. Among keratinous materials, the most abundant and sustainable in nature is the chicken feather waste [ 17 ]. Globally quantity of feathers produced by poultry processing, as a by-product, was estimated at ~8.5 billion tons per year [ 1 , 18 ], while annual worldwide production of poultry encounters a continuous increase, anticipating reaching more than 24.8 billion animals in 2030 and 37.0 billion in 2050, respectively [ 10 , 19 ].…”

Section: Introductionmentioning

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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Optimization of keratin protein extraction from waste chicken feathers using hybrid pre-treatment techniques

Cited by 52 publications

References 13 publications

Fabrication and characterization of keratin starch biocomposite film from chicken feather waste and ginger starch

Fabrication and characterization of keratin starch biocomposite film from chicken feather waste and ginger starch

Viscoelastic Polyurethane Foam with Keratin and Flame-Retardant Additives

Closing the Loop with Keratin-Rich Fibrous Materials

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