Characterisation of keratin biomass from butchery and wool industry wastes

Zoccola, Marina; Aluigi, Annalisa; Tonin, Claudio

doi:10.1016/j.molstruc.2009.08.036

Cited by 149 publications

(113 citation statements)

References 30 publications

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“…After the first 5 h, the release of the drug from K/G and K/C blend films was faster than the other films and gradually increased until reaching 100% after 12 h of study. Surprisingly, the K/S blend film released about 50% of the drug after 12 h and was empty within 49 h. At the end of the experiment, the K/S released drug was about 60%, while the native keratin showed the lowest release of the drug, about 15% at 49 h. The drug release profile of the blend films was studied by immersion in PBS with stirring for 49 h. This was in accordance with the dissolution of keratin, since it is composed of a high content of sulfur from the amino acid cystein 16 . The disulfide (-S-S-) in the keratin structure was a main factor in the dissolution and drug release protection.…”

Section: Drug Release Studymentioning

confidence: 81%

“…The texture of the keratin film was fragile and brittle due to the strong disulfide bond from the cystine molecules 16 . Many polar natural polymers including sericin, collagen peptide, gelatin and starch were chosen for improving the keratin texture.…”

Section: Digital Images Of Keratin Filmsmentioning

confidence: 99%

“…The DTG curves present the T d, max of all films as being higher than 250°C, which was responsible for destroying the crystalline regions of the proteins 16 . In addition, the thermal properties were affected strongly by the blending ratio, which was found by the different T d, max of each blending ratio.…”

Section: Thermal Stability Studymentioning

confidence: 99%

See 2 more Smart Citations

Preparation and Characterization of Keratin Blended Films using Biopolymers for Drug Controlled Release Application

Thonpho¹,

Srihanam²

2016

Orient. J. Chem

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Keratin solution was separately blended with collagen, gelatin, sericin and starch for films preparation. All the blended films had smooth surfaces without phase separation, except the keratin/ starch blend film. The native keratin film showed small particles embedded in all the film surfaces that resulted in them being rough. The structure of the native keratin film changed from beta-sheet to random coil at high blend ratio of other substances. This result increased the dissolution of the films especially the keratin/starch blend. The results relate directly to the decreased thermal stability of this film. However, the changes in structure did not affect the chlorhexidine release pattern. It is possible that the interaction between the drug and blending substances, and the substances to water molecules are the main factor influencing the drug release pattern from the films.

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Section: Drug Release Studymentioning

confidence: 81%

Section: Digital Images Of Keratin Filmsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and Characterization of Keratin Blended Films using Biopolymers for Drug Controlled Release Application

Thonpho¹,

Srihanam²

2016

Orient. J. Chem

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“…The ratio of sulphur content also play important role in physical properties of keratin. Some researchers classified keratin as soft and hard forms based upon sulphur content (Rizvi and Khan 2008;Zoccola et al 2009). Soft keratin has lower cystine content, week cross linking and smaller resistant to other chemicals found in the hair core and outer layer of epidermis (Fraser et al 1972).…”

Section: Introductionmentioning

confidence: 99%

Sustainable Management of Keratin Waste Biomass: Applications and Future Perspectives

Sharma

Gupta

2016

Braz. arch. biol. technol.

164

102

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“…On the bright side, most of these AFs are keratinous materials; that is, they are potential bio-resources for keratin extraction [26] [27].…”

Section: Introductionmentioning

confidence: 99%

Re-Evaluation of Bovine Fiber Biomass as Exploitable Keratinous Bio-Resource for Biomedical and Industrial Applications

Oladele¹,

Olajide²,

Daramola³

et al. 2017

JMMCE

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In claim of developing ecologically-friendly and low cost polymeric materials, some polymer scientists and engineers have focused on improving the properties of polymer composites with natural fibers. One typical example of these natural fibers currently used as reinforcements in low load-bearing polymer composites is bovine fiber which is traditionally a waste from slaughterhouse. However, nature has designed natural fibers with anisotropic properties which may not augur well for the development of polymer composites with guaranteed field-proven reliability. Nonetheless, unlike vegetal fibers, most animal fibers can be alternatively exploited for keratinous applications. In the present study, the tensile properties, crude protein contents and variations in elemental distribution of hair fibers obtained from three breeds of bovine found in Nigeria were investigated. The hair fibers were characterized by ultimate testing machine, proximate analysis and scanning electron microscopy with energy dispersive X-ray spectroscopy. Superlative Young's modulus and tensile strength among the fibers were found to be 0.98989 GPa and 0.56158 MPa, respectively. The determined crude protein contents of the fibers ranged between 35% and 40%. Also, single hair fibers from each bovine breed showed significant variations in elemental distribution along their longitudinal sections which translates to anisotropic chemical and mechanical properties. However, the mean spectral values of the principal elements that constitute amino acids in the fibers are in the same range with that of human hair fibers with a successful record of keratinous applications.

show abstract

Characterisation of keratin biomass from butchery and wool industry wastes

Cited by 149 publications

References 30 publications

Preparation and Characterization of Keratin Blended Films using Biopolymers for Drug Controlled Release Application

Preparation and Characterization of Keratin Blended Films using Biopolymers for Drug Controlled Release Application

Sustainable Management of Keratin Waste Biomass: Applications and Future Perspectives

Re-Evaluation of Bovine Fiber Biomass as Exploitable Keratinous Bio-Resource for Biomedical and Industrial Applications

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