Extraction of elastin from tannery wastes: A cleaner technology for tannery waste management

Yoseph, Zerihun; Jayakumar, G.; Demessie, Berhanu A.; Selvi, A. Tamil; Sreeram, Kalarical Janardhanan; Rao, Jonnalagadda Raghava

doi:10.1016/j.jclepro.2019.118471

Cited by 34 publications

(20 citation statements)

References 8 publications

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“…A biocompatibility study conducted on the extracted elastin from tannery wastes also showed the non-toxic nature of extracted elastin. The selected extraction process did not cause any toxicity development at the concentration up to 0.2 mg/mL [ 40 ], which is similar to the non-toxic concentration limit in the present study. Elastin hydrolysate from the bulbus arteriosus of skipjack tuna significantly enhanced fibroblast proliferation from 1.10- to 1.19-fold after 96 h at 5 × 10 −6 –0.005 mg/mL [ 18 ].…”

Section: Resultssupporting

confidence: 84%

“…FTIR analysis showed typical peaks of protein, which are amide A, B, I, II and III for both samples. The assignment of wavelength bands in the FTIR spectra of analyzed samples is given in Table 2 and compared with elastin extracted from previously reported studies [ 5 , 40 ]. The 1537 cm −1 and 1622 cm −1 peaks are directly associated with the α-helix and β-sheet structures, respectively, confirming the secondary structure of the extracted elastin.…”

Section: Resultsmentioning

confidence: 99%

“…The other proximate components of the extracted elastin, i.e., minerals, might affect the differences in weight loss peaks between the extracted and commercial elastin. Elastin made from tannery waste had six mass-loss steps, where the maximum percentage of elastin decomposition was 32% in the range of 298–367 °C [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

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Characterization and Toxicity Evaluation of Broiler Skin Elastin for Potential Functional Biomaterial in Tissue Engineering

Kamaruzaman

Yusop

2022

Polymers

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Broiler skin, a by-product of poultry processing, has been proven to contain essential elastin, a high-value protein with many applications. The present study reported the extraction of water-soluble elastin from broiler skin by using sodium chloride (NaCl), sodium hydroxide (NaOH), and oxalic acid treatment before freeze-drying. Chemical characterization such as protein and fat content, Fourier-transform infrared (FTIR) spectroscopy, amino acid composition and thermal gravimetric analysis (TGA) were performed and compared with commercial elastin from bovine neck ligament. The resultant elastin’s toxicity was analyzed using an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) tetrazolium assay and primary skin irritation test. Results showed a high quality of the extracted-elastin with the presence of a high amount of proline (6.55 ± 0.40%) and glycine (9.65 ± 0.44%), low amount of hydroxyproline (0.80 ± 0.32%), methionine (2.04 ± 0.05%), and histidine (1.81 ± 0.05%) together with calculated 0.56 isoleucine/leucine ratio. FTIR analysis showed the presence of typical peaks of amide A, B, I, and II for protein with high denaturation temperature around 322.9 °C. The non-toxic effect of the extracted elastin was observed at a concentration lower than 0.5 mg/mL. Therefore, water-soluble elastin powder extracted from broiler skin can be an alternative source of elastin as a biomaterial for tissue engineering applications.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

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Characterization and Toxicity Evaluation of Broiler Skin Elastin for Potential Functional Biomaterial in Tissue Engineering

Kamaruzaman

Yusop

2022

Polymers

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“…The extraction of elastin, a protein-based material that serves as an ingredient for jellies, moisturizers, antiaging, and personal care products has been studied from untanned leather waste. Yoseph et al [107] achieved a 90% yield for elastin extraction from raw hide trimming wastes by the thermochemical treatment method using alkaline pre-treatments. The biocompatibility analysis using human keratinocyte cells confirmed the presence of a non-toxic nature of the extracted elastin, favoring its application in dermatological products, for example.…”

Section: Extraction/recovery Of Compounds Of Industrial And/or Commermentioning

confidence: 99%

Alternative uses for tannery wastes: a review of environmental, sustainability, and science

et al. 2020

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The manufacture of leather covers a wide productive chain and beyond contributes to the economic flow. The various stages of leather processing result in high volumes of solid waste. In Brazil, a daily generation of 375 tons of solid waste is estimated, and landfills are still the most used route to its destination. In this review, emphasis will be given to researches that have sought alternatives for the use of solid waste from the tannery industry. Among the main applications of solid tannery wastes, the following stand out production of adsorbent materials, biodiesel, biogas, biopolymers, applications in agriculture and other applications involving extraction/recovery of compounds of industrial/commercial interest, isolation of microorganisms and production of enzymes and applications in the animal diet. In each alternative of waste application, the technologies used, the opportunities, and the challenges faced are mentioned. We hope that this review can provide valuable information to promote the broad understanding of the possibilities that tannery solid wastes has for the development of biodegradable and agricultural products, wastewater treatment, extraction of compounds of industrial and commercial interest, among others.

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“…However, a large amount of leather solid waste (LSW) is produced in the leather production process. These wastes are insoluble and difficult to reprocess and thus only can be incinerated or landfilled, , consequently leading to serious environmental concerns. It is inspiring that a hierarchical structure consisting of dipoles exists in the collagen fibers of leather .…”

Section: Introductionmentioning

confidence: 99%

From Waste to Wealth: A Lightweight and Flexible Leather Solid Waste/Polyvinyl Alcohol/Silver Paper for Highly Efficient Electromagnetic Interference Shielding

Zeng

Huang

Jiang

et al. 2020

ACS Appl. Mater. Interfaces

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With the popularization of 5G communications and the internet of things, electromagnetic wave (EW) radiation pollution has aroused much concern from the public, and the search for new materials and technologies for preparing electromagnetic shielding materials still continues all around the world. However, the contradiction among high shielding performance, economic applicability, and flexibility is still not well balanced. Herein, we fabricated a novel foldable leather solid waste (LSW)/polyvinyl alcohol (PVA)/silver (Ag) paper with excellent electromagnetic interference (EMI)-shielding ability using a facile but sustainable electroless plating (ELP) method with LSW as the resource. Taking PVA as a cross-linker, debundled leather fibers (LFs) generated by solid-state shearing milling could generate a flexible LSW/PVA substrate with a high specific surface area, and eventually the deposited Ag layer served as a protective layer not only to significantly improve the mechanical and thermal robustness, but also to endow the LSW/PVA/Ag paper with good hydrophobicity, which could protect from potential moisture damage. In addition to the reflection effect of metallic Ag on EW, the hierarchical structure of collagen fibers played an important role in superior high EMI-shielding effectiveness (∼55–∼90 dB) by an absorption-dominant EMI-shielding mechanism. Furthermore, a multilayer LSW/PVA/Ag paper was also prepared with enhanced EMI-shielding effectiveness of 111.3 dB benefited by constructing multiple reflection–absorption interfaces. The high-performance, environmentally friendly, and low-cost EMI-shielding materials not only offered a new avenue toward recycling LSW in a more value-added way, but also displayed promising potential for application in flexible shielding materials or wearable clothing.

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Extraction of elastin from tannery wastes: A cleaner technology for tannery waste management

Cited by 34 publications

References 8 publications

Characterization and Toxicity Evaluation of Broiler Skin Elastin for Potential Functional Biomaterial in Tissue Engineering

Characterization and Toxicity Evaluation of Broiler Skin Elastin for Potential Functional Biomaterial in Tissue Engineering

Alternative uses for tannery wastes: a review of environmental, sustainability, and science

From Waste to Wealth: A Lightweight and Flexible Leather Solid Waste/Polyvinyl Alcohol/Silver Paper for Highly Efficient Electromagnetic Interference Shielding

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