Department of Leather Engineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkiye.
J Environ Manage. 2012 Jun 15;100:22-8. doi: 10.1016/j.jenvman.2012.01.026. Epub 2012 Feb 21.
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/C complex and LO.
在全球范围内，制革业每年产生约 60 万吨含铬固体废物。环境问题和不断攀升的垃圾填埋成本正成为制革业日益严重的问题，寻求解决这些问题的方法是当今许多研究的首要关注点。本研究从铬鞣革废物中分离出基于固体胶原蛋白的蛋白质水解物，并确定其化学性质。采用复凝聚法制备了含有薰衣草油 (LO) 的胶原蛋白水解物 (CH) - 壳聚糖 (C) - 戊二醛 (GA) 交联的微胶囊。考察了各种工艺参数，包括 CH 与 C 的比例、LO 含量和 GA 对微胶囊的油载量（%）、油含量（%）、包封效率（%）和 LO 释放率的影响。随着 CH/C 混合物中 C 的比例和交联密度的增加，LO 从微胶囊中的释放速率减慢。光学和扫描电子显微镜图像表明，LO 微胶囊呈球形。傅里叶变换红外光谱（FTIR）研究证实 CH/C 复合物与 LO 之间没有明显的相互作用。
