By Baico Biotech 丨 Denim Washing 丨 Baico Bioch-Arpina
Denim takes cotton fiber as its raw material, and cellulose constitutes the major component of cotton fiber.Cellulase features substrate specificity. It can target and degrade cellulose on the surface of denim, strip indigo dyes attached to fiber surfaces and generate natural three-dimensional washed fading effects, making it the key auxiliary agent for denim bio-stone washing processes.
At present, cellulases widely used in denim bio-stone washing processes fall into two categories: acid cellulase and neutral cellulase.There are differences in their application performance. Acid cellulase only functions under acidic conditions. Nevertheless, in denim washing procedures, added chemical auxiliaries and environmental factors lead to drastic pH fluctuations in the washing liquor, which greatly impairs the catalytic effect of acid cellulase.Acid cellulase has a narrow range of applicable temperature and pH values, leading to poor batch-to-batch repeatability of denim finishing results. Moreover, prolonged exposure to acidic conditions willexcessively erode cotton fibers and impair the tensile strength of fabrics. In addition, indigo dye carries a negative charge. Under acidic environments, enzyme molecules tend to bind with indigo, causing severe blue backstaining on pockets and linings, which greatly increases the rework rate.In contrast, neutral cellulase works over a wide range of operating conditions. Though its enzyme activity is slightly lower than that of acid cellulase, its reaction is mild and controllable, delivering higher light-dark contrast on finished goods with consistent and stable washing effects across all batches and minimal fabric loss. Enzyme molecules remain uncharged in neutral surroundings and will not adsorb negatively charged indigo dye, fundamentally eliminating the issue of back staining and achieving superior cleanliness of finished denim products.
Where can we purchase neutral cellulase? BBT can provide you with a stable supply channel.BBT Enzyme NEF® GP3 and NEF® 2200+, manufactured by BBBT, are highly concentrated granular neutral cellulases formulated for denim stone washing. NEF® 2200+ is a granular enzyme featuring good enzyme stability; it can be stored for 2 years at temperatures below 27°C. If you prefer a simpler production process, choose NEF® GP3 produced by BBT. It is a high-concentration powdery cellulase. It accomplishes desizing and abrasion in a one step within just 40 minutes at 55°C, streamlining production procedures and delivering denim fabrics with an soft hand feel.They boast a broad working temperature and pH tolerance window. It replaces pumice stones for pumice-free stone washing under low-temperature conditions, delivering crisp ,gray shade tone abrasion on denim and good anti back staining performance.They feature stable performance with complete certificates and compliance documents. We guarantee long-term consistent supply for worry-free bulk procurement.
#cellulase #enzyme #textile #granular #powder # BBT enzyme #stone # wash #Garment #abrasion #jeans # denim #desizing #peroxidase #abrasion #stone free enzyme #water free enzyme #
声明：此篇为BBT-ENZYMES原创文章，转载请标明出处链接： https://www.bbtenzyme.com/h-nd-74.html