Complex coacervation of collagen hydrolysate extracted from leather solid wastes and chitosan for controlled release of lavender oil

Journal of Environmental Management
Buğra Ocak

Abstract

In the world, approximately 600,000 metric tonnes of chromium-containing solid wastes are generated by the leather industry each year. Environmental concerns and escalating landfill costs are becoming increasingly serious problems to the leather industry and seeking solutions to these problems is a prime concern in much research today. In this study, solid collagen-based protein hydrolysate was isolated from chromium-tanned leather wastes and its chemical properties were determined. Microcapsules of collagen hydrolysate (CH) - chitosan (C) crosslinked with glutaraldehyde (GA) containing Lavender oil (LO) were prepared by complex coacervation method. The effects of various processing parameters, including the CH to C ratio, LO content, and GA, on the oil load (%), oil content (%), encapsulation efficiency (%) and release rate of LO from microcapsules were investigated. As the ratio of C present in the CH/C mixture and crosslinking density increased, the release rate of LO from microcapsules slowed down. Optical and scanning electron microscopy images illustrated that the LO microcapsules were spherical in shape. Fourier transform infrared spectroscopy (FTIR) studies confirmed that there was no significant interaction between CH/...Continue Reading

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Citations

Dec 11, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Egle ConfortoThierry Maugard
Feb 19, 2015·Journal of Materials Science·Kyle A AlbertiQiaobing Xu
Dec 3, 2017·Environmental Science and Pollution Research International·Buğra Ocak
Aug 27, 2019·International Journal of Biological Macromolecules·Farzaneh Mohseni, Sayed Amir Hossein Goli

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