• 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 Korean Fiber Society Conference
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• 2001.10a
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• pp.382-385
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• 2001

일반적으로 호발, 정련, 표백으로 이루어지는 전처리(preparation) 공정은 섬유자체의 불순물 및 제사시의 유제, 제직시의 호를 제거하여 섬유의 흡수성과 백도를 높이고 그 화학조성을 균일하게 하여 염색 및 가공이 최적의 조건에서 균일하게 수행할 수 있도록 하여 주는 공정을 말하며, 전처리 공정을 거친 원단 상태의 품질이 다음 단계의 염색을 성공적으로 마치기 위해서 매우 중요한 요인으로 작용하며, 실제로 전처리 결과의 미습함이 염색불량 원인의 90% 이상을 차지하고 있다. (중략)

• 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)

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2005.06a
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• pp.245-247
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• 2005

A cellulolytic fungus isolated from Agave plantation in northeastern Thailand was identified as Acrophialophora nainiana. The fungus was capable of growing at pH between 3 - 7 and 25 - 45 $^{\circ}C$, with the optimum conditions at pH 5.0 and 40 $^{\circ}C$. The wild isolate produced cellulases, comprising of exoglucanase (0.019 U/mg protein), endoglucanase (0.366 U/mg protein), and ${\beta}$-glucosidase (0.001 U/mg protein). Mutations with UV and NTG produced the UV 10-2 mutant with cellulases activities including exoglucanase (0.093 U/mg protein), endoglucanase (0.585 U/mg protein), and ${\beta}$-glucosidase (0.013 U/mg protein). Purification of the enzymes with ultrafiltration, ammonium sulfate precipitation, and ion-exchange chromatography yielded the maximal cellulase specific activities of 2.736 U/mg protein (exoglucanase), 0.235 U/mg protein (endoglucanase), and 0.008 U/mg protein (${\beta}$-glucosidase). The mutant's cellulases were the most active at pH 5.0 and 60 $^{\circ}C$. Ion-exchange chromatography revealed that A. nainiana UV 10-2 cellulases were comprised of two peaks with one peak showing the single endoglucanase activity while the other peak showed a mixture of the three enzyme activities. Production of A. nainiana UV 10-2 cellulases using banana leaf stalk as the sole carbon source gave comparable yields to that of the pure ${\alpha}$-cellulose. The enzymes were used in the simultaneous saccharification and fermentation (SSF) of plant residue (Coix aquatica) along with Kluveromyces marxianus to produce ethanol. Moreover, when the enzymes were used in the bioscouring process of fabric, the desiravle traits of textile processing including immediate water absorbency, increased in whiteness and reduction of yellowness of the treated fabric were observed.