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HIDES AND SKINSCOMMERCIAL ASPECTS
HIDE AND SKIN STRUCTURE
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addition alkaline amino acids animal applied basic bating beamhouse cattle hides cattlehide characteristics chemical Chemistry chloride chrome tannage chromium coats collagen color concentration cost curing decrease deliming desired drum drying effluent elastin emulsion enzyme evaporation extract fatliquoring fatty acids fiber Figure fixation flesh formaldehyde grain groups hair follicle hide protein hides and skins hydrogen isoelectric point keratin leather industry Leather Manufacture leather production lignosulfonate lime liquor lubrication machine method moisture molecule naphthalene obtained operation oxidation penetration pickle pigskin practical quantity quebracho reaction Reinhold removed resin result shearlings sheepskin shoe upper side soaking sodium sodium sulfide sole leather soluble solution solvent split suede sulfate sulfhydrate sulfide sulfonic sulfuric sulfuric acid surface swelling syntans tannage tannery tanning agent tanning process temperature tion types of leather unhairing United upper leather usually vegetable tanning materials vegetable tannins wastes