Effect of ultrasound on keratin valorization from chicken feather waste: Process optimization and keratin characterization

Qin, Xiaojie; Yang, Chuan; Guo, Yujie; Liu, Jiqian; Bitter, J.H.; Scott, Elinor L.; Zhang, Chunhui

doi:10.1016/j.ultsonch.2023.106297

Cited by 18 publications

(3 citation statements)

References 47 publications

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“…It may be that the hydrolysis of raw feathers to create FM leaves little scope for further improvement with additional physical processing. Nevertheless, a number of studies have shown that autoclaving (Papadopoulos et al 1986), microwaving (Chen et al 2015) and ultrasound (Qin et al 2023) improve FM quality. However, the major difference between these studies and the current study is the starting material used.…”

Section: Protease and Probiotic Supplementation And Digestibility Of ...mentioning

confidence: 99%

Physical treatment and protease or probiotic supplementation and feather meal digestibility by broilers

Sun,

Li,

Zhang

et al. 2024

Anim. Prod. Sci.

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Context Improving the utilisation of alternative protein ingredients in livestock production will reduce feeding costs and improve industry sustainability. Feather meal (FM) is an abundant, alternative protein source with a high protein content but poor amino acid (AA) digestibility. Aim This study evaluated strategies for improving AA digestibility of FM. Methods Experiment 1 examined the effects of physical treatment with ultrasound, microwave and autoclaving on FM AA profile and digestibility. Experiment 2 evaluated the dietary addition of a protease (Ronozyme ProAct, 200 and 600 mg/kg; RPA) and a probiotic (BioPlus 400, 1500 mg/kg) on FM AA digestibility. Apparent ileal digestibility was determined by feeding each treatment to four replicate groups of six birds in Experiment 1 and five replicate groups of seven birds in Experiment 2, and then collecting the contents of the lower half of the ileum. Key results None of the physical treatments improved (P > 0.05) the AA profile or ileal AA digestibility of FM. Dietary supplementation with RPA at 200 mg/kg or BioPlus 400 at 1500 mg/kg did not significantly (P > 0.05) influence the apparent ileal AA digestibility of FM. However, the higher concentration of RPA (600 mg/kg) significantly (P < 0.05) increased the apparent ileal AA digestibility of FM. Conclusion The increased digestibility of FM by the protease and numerical increase (P < 0.1) by the probiotic (1500 mg/kg) presumably reflects keratinase activity of both feed supplements. Implications The results of this study indicated that there is scope for further improvement in the nutritive value of FM for broilers.

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Section: Protease and Probiotic Supplementation And Digestibility Of ...mentioning

confidence: 99%

Physical treatment and protease or probiotic supplementation and feather meal digestibility by broilers

Sun,

Li,

Zhang

et al. 2024

Anim. Prod. Sci.

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“…Мал шаруашылығынан кератині бар шикізаттың негізгі көзі -қой, ешкі жүні және құстардың қауырсындарынан алынған кератиндер болып табылады. 2017 жылдан 2020 жылға дейінгі кезеңде Қазақстан Республикасының барлық өңірлерінде малдың жалпы саны көрсетілген ( [17].…”

Section: кіріспеunclassified

Properties and applications of keratin from the waste of animal-farming (review article)

Sultan,

Ospanova,

Musabekov

et al. 2023

jour

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The study aims to provide a modern overview of the properties of keratin-containing raw materials from animal waste among the research scientists over the past decades and to show the important role of keratin in science. This review examines the composition and types of keratin, the scope of application, the functions of keratin, distribution in animal husbandry and fish farming, as well as in mammals. It is important to note that keratin is widely used in biomedicine, tissue engineering, bioplastics, textiles, biocomposites in construction and building materials. This article reveals the physical and chemical properties and advantages of keratin, such as biodegradability, mechanical abilities, resistance to temperature conditions and thermal conductivity. Keratin can be synthesized from different raw materials, such as wool, hair, bird feathers, using different methods. The extraction method can be of several types: oxidative and reducing, as well as extraction by steam explosion. Extracted keratin has generated increased interest for its study and research for medical purposes, or rather the first innovative discoveries were made among cosmetics, coatings for medicines and fibers. Keratin extracted from animal waste represents a promising active biomolecule for biological and biomaterial applications. The exceptional properties that keratin transmits by virtue of its nature open up the possibility of replacing synthetic materials with biomaterials more compatible with humans and biodegradable, which can improve the overall economy of the closed cycle of agro-industrial complexes.

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“…[16][17][18] However, it has been proved that it is difficult for protease to hydrolyze wool flake keratin, and the hydrolysis rate of wool keratin by protease is much lower than that of ordinary globulin. [19][20][21] This is mainly due to the high density of disulfide bonds in the scale layer of wool. 19,22 It is well known that the efficient catalytic reaction of proteases is based on the requirement that the active site of the protease and the reaction site of the substrate are fully brought into contact and can deform together.…”

Section: Introductionmentioning

confidence: 99%

The effect of a novel catalytic system with Savinase 16L and an organophosphine compound on the shrink-proofing and dyeing properties of wool

Wang,

Duan,

Yao

et al. 2023

New J. Chem.

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Effect of ultrasound on keratin valorization from chicken feather waste: Process optimization and keratin characterization

Cited by 18 publications

References 47 publications

Physical treatment and protease or probiotic supplementation and feather meal digestibility by broilers

Physical treatment and protease or probiotic supplementation and feather meal digestibility by broilers

Properties and applications of keratin from the waste of animal-farming (review article)

The effect of a novel catalytic system with Savinase 16L and an organophosphine compound on the shrink-proofing and dyeing properties of wool

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