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Xu S.-Y.,Enzyme Engineering Institute of Shaanxi science | Zhao W.-J.,Enzyme Engineering Institute of Shaanxi science | Ma Q.,Shaanxi Engineering Center for Enzyme Technology | Xu A.-G.,Shaanxi Textile Science Institute | And 2 more authors.
Wool Textile Journal | Year: 2011

The article studied the compatibility between alkaline proteinase, neutral protease and textile auxiliaries with the wool finished. We analyzed the nonionic-organic textile auxiliaries, ionic-organic textile auxiliaries and dyes by reduction and relative activity combination method. The results showed that the salt of Na+ , K+ , NH4 + , Mg 2+ , Ca2+ promoted the catalytic of enzyme when the concentration of the salt was lower, the nonionic-surfactants could promot the catalytic of enzyme. The salt of Cu2+ ,Fe3+, Mn0 4 - , ionic-surfactants and dyes could evidently restraint the catalytic of alkaline proteinase, neutral protease. The salt of Na + , K+ , NH4 + , Mg 2+ , Ca2+ promoted more evidently the catalytic of neutral protease than alkaline proteinase. The ionic-surfactants and dyes restrainted more evidently the catalytic of alkaline proteinase than neutral protease. The studies might guide the application of protease for the wool textle industry on the theory. Source


Xu S.-Y.,Shaanxi Academy of science | Xu A.-G.,Shaanxi Textile Science Institute | Zhao W.-J.,Shaanxi Academy of science | Ma Q.,Shaanxi Engineering Center for Enzyme Technology | Ren P.,Shaanxi Engineering Center for Enzyme Technology
Wool Textile Journal | Year: 2012

In this paper, we researched the technology of the shrink-resist finishing of wool fabrics with the immobilized neutral proteinase, prcessed the single-actor experiment. The application technological parameter of the immobilized neutral proteinase was optimized by the orthogonal experimental design. The result showed that the amount of the immobilized neutral proteinase was 5% ( owf ) , the treating temperature was 50 °C , the treating pH value was 7. 0 and the treating time was 60 min. The results finishing the wool fabrics with the free and immobilized neutral proteinase were compared. The result showed that the shrinkage effect was increased 37. 6% , the weight loss percentage was descended 45. 2% , the strength loss percentage was descended 52. 7% , the whiteness was increased 23. 2% and the anti-pill rate was raised by level 2. This will establish the basis of the industrializing enzvme on shrink-resist finishing of wool knitted fabrics. Source

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