Abstract
The effects of ultrasound power on extraction kinetic model, and physicochemical and structural characteristics of collagen from chicken lung were studied. Ultrasound power caused a significant increase in extraction rate and equilibrium concentration, with the maximum extraction yield (31.25%) at 150 W. The experimental data were consistent with the predicted ones in this empirical equation, in which the percentage error differences was 0.026–4.159%. Besides, ultrasound treatment did not affect their triple-helical structure. The thermal stability of pepsin-soluble collagen by ultrasound pre-treatment (UPSC) was higher, due to the higher imino acid content (20.76%). UPSC also exhibited better solubility and fibril forming capacity. Overall, the kinetic model of UPSC from chicken lung could serve the purpose of obtaining collagen, which displayed a potential alternative source to mammal collagens for application in food, biomaterials and biomedical fields.Graphical abstract
Highlights
According to Food and Agriculture Organization of the United Nations (FAO 2018) statistics, the world’s chicken production in 2018 was about 97.8 million tons
Development of collagen extraction kinetic model The appropriate ultrasonic power in collagen extraction from the chicken lung with ultrasound pretreatment can be identified through regression analysis
The data showed that the improvement in Pepsin-soluble collagen from ultrasound pretreated chicken lung (UPSC) yield was obtained when higher ultrasonic power (P) was operated in the extraction process and the highest Ce was achieved at 150 W
Summary
According to Food and Agriculture Organization of the United Nations (FAO 2018) statistics, the world’s chicken production in 2018 was about 97.8 million tons (of which China contributed ~ 11.7 million tons).
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