• Textile Coloration and Finishing
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• v.17 no.1
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• pp.14-19
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• 2005

Study on the use of enzymes for textile wet processing has been very active. The exploratory research conducted herein is related to the bioscouring process for cotton fabric. The optimum concentration of alkaline pectinase(BioPrep) was in the range of 0.05～0.2 g/l, the proper treatment time was 30～60 minutes, the appropriate treatment temperature was $60^{\circ}C$ for both the batch method and the padding method. The simultaneous desizing/bioscouring by padding method did not give water absorbency as good as the bioscouring after desizing. Color of fabrics which were bioscoured and dyed with direct dyes and a reactive dye was just a little darker than that of NaOH scoured one. K/S and Lab values of the bioscoured fabrics, regardless of the degree of water absorbency, were quite similar to each other.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 1999.11b
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• pp.84-89
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• 1999

Treatment with the enzyme pectinase has been reported to lower the cationic demand of thermomechanical pulp(TMP) bleached with alkaline peroxide in the laboratory. We have extended this discovery to bleached TMP produced industrially, and shown that commercial enzyme preparations can treat pulp within 15 minutes at the at the temperature and pH values prevalent in paper mills. About half of the cationic demand in the bleached pulp can be destroyed by pectinase. Dynamic drainage jar experiments show that the enzyme treatment improves the effectiveness of several cationic polymers to increase retention in the absence of retention aids or with non-ionic polymers, and does not damage the strength properties of the pulp. Pectinase could be easily incorporated into paper machine stock preparation systems to lower the charges of cationic retention aids needed in furnishes containing peroxide-bleached mechanical pulp.

• Proceedings of the Korean Fiber Society Conference
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• 2002.04a
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• pp.392-395
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• 2002

효소는 주로 면직물의 전처리 및 염색가공에 사용되고 있는데, 공업적으로 적용되고 있는 예로는 아밀라제에 의한 호발, 셀룰라제에 의한 감량 및 유연가공을 들 수 있고, 최근 미국과 일본을 중심으로 연구되고 있는 펙티나제에 의한 정련은 공업화 가능성이 매우 높은 것으로 보고되고 있으며, 글루코스 옥시다제에 의한 표백은 아직연구 초기 단계에 있다. 효소정련이란 기존의 수산화나트륨 대신에 효소를 사용하여 행하는 정련을 말하며, 장점으로는 50-6$0^{\circ}C$ 정도의 온도에서 행하기 때문에 기존 정련법과 비교시 에너지와 용수를 절약할 수 있는 것, 폐수 중에 방출되는 오염물질의 양을 현격하게 줄일수 있을 것, 우수한 생분해성으로 인한 수질오염을 감소시킬 수 있을 것, 부드럽고 스무스하여 자연스런 태를 부여하는 것 및 재현성이 높은 것 등이다. (중략)

• Korean Journal of Food Science and Technology
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• v.27 no.3
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• pp.370-374
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• 1995

By exposing the complex enzyme solution to alkaline condition, it was possible to remove the protease activity selectively without inactivation of soybean cell wall degrading activity of the crude enzyme complex produced by Aspergillus niger CF-34. Optimum reaction conditions were as follow. pH was $9.0{\pm}0.1$, temperature was $20^{\circ}C$ and reaction time was 30 min with gentle stirring. Over 90% of protease activity could be eliminated while the activities of pectinase, polygalacturonase, xylanase, carboxymethyl cellulase and soybean cell wall degrading enzyme were maintained to $80{\sim}100%$. Through alkali treatment, it was discovered that the quality and organoleptic properties of soy protein produced by this enzymes were improved because the hydrolysis of protein and formation of bitter peptide were decreased.

• Textile Coloration and Finishing
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• v.8 no.1
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• pp.64-72
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• 1996

To develop a scouring method for the high-grade quality and the high value added of flax for spinning, it was measured and analyzed weight loss and degree of injury with change of scouring concentration, time, temperature and pH. We got the f ollowing results; Firstly, in case that flax was scoured at a fixed condition, the weight loss and degree of injury of scoured flax under the no-cutting condition were lower than that of scoured flax under the cutting condition. Secondly, when flax was scoured with $Na_{2}CO_{3}$, it was obtained that the higher weight loss and degree of injury and weight loss with the increase of scouring time and condition. The degree of injury was lower than any other under the treatment condition of 4% $Na_{2}CO_{3}$concentraion for 2 hours. Finally, when alkaline scoured flax was rescoured by pectinase, enzyme activation effect was the most active under the treatment condition of pH 4 for 2 hours. The scouring effect was better than that of alkaline scouring only.