| Abstrak/Abstract |
The fish fillet industry in its production process produces skin as a byproduct (waste) in a large enough amount (± 20%). Fish skin waste has economic potential to be utilized and processed into tanned skin (raw material). Fish skin can be tanned into sheets of collagen fibers as a high quality raw material for the processing of commercial leather products with important economic value. The research objectives were the tanning of lencam fish skin as collagen fiber (raw material) for commercial skin products, quality analysis of collagen fibers and the added value. The treatment of the chemical-natural tanning mixture used was: 6% formalin (control) (p1), a mixture of 2% glutaraldehyde + 4% mimose p2), a mixture of 4% glutaraldehyde + 4% mimose (p3) and a mixture of 6% glutaraldehyde + 4% mimosa (p4). The research method used is tanning, extraction, laboratory, added value. The mean value of collagen fiber quality from lencam fish skin were: thickness (0.36 mm); tensile strength (3,770.41 N/cm2); tear strength (667.10 N/cm), Enervation 4.35 mm); elongation (76.38%); wrinkle temperature (59.80°C); oil/fat content (14.59%) and water content (23.00%). The quality of the lencam fish skin collagen fiber (especially thickness, tensile strength and tear strength) meets the SNI 06-4586-1998 quality standard and the Enervation meets Burk's Bay Suede Leather standard. The amount of lencam fish skin is 20 pieces with a purchase price of IDR 5,500, the cost of tanning is IDR 22,500 with a selling price of tanned skin (collagen fiber) of IDR 200,000 so that the added value obtained is IDR 172,500 (627.27%) in 2nd market segment and IDR 2,794,500 (50,809.09%) in 3st market segment. The tanned lencam fish skin can be processed into commercial leather products (women's wallet type 3-in-1) at a price of IDR 500,000 per item. The treatment of the
mixture of tanners that produced the best quality of collagen fibers was p1, p2, p4 and p3, respectively.
Keywords: lencam fish skin, tanning, tanning material mixture, quality, added value |
