KSBB Journal

  • 제24권4호
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  • Pages.361-366
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  • 2009
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  • 1225-7117(pISSN)
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  • 2288-8268(eISSN)
한국생물공학회 (The Korean Society for Biotechnology and Bioengineering)
권호 표지

농업부산물 고추대 (Pepper Stem)을 이용한 묽은 황산 자일로즈 분별공정의 최적화

Optimization the Xylose Fractionation Conditions of Pepper Stem with Dilute Sulfuric Acid

  • 원경연 (단국대학교 공학대학 응용화학공학과) ;
  • 오경근 (단국대학교 공학대학 응용화학공학과)
  • Won, Kyung-Yoen (Department of Applied Chemical Engineering, Dankook University) ;
  • Oh, Kyeong-Keun (Department of Applied Chemical Engineering, Dankook University)
  • 발행 : 2009.08.29
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초록

본 연구에서는 반응표면분석법 (RSM)을 따른 고추 대의 묽은 황산을 이용한 자일로즈 분별 공정을 통해 고추대 시료로부터 최적의 자일로즈 수율을 얻을 수 있는 반응조건을 예측할 수 있었다. 실제 실험 결과 최적 반응은 온도 $147^{\circ}C$, 산 농도 2.8% $H_2SO_4$, 반응시간 21 min. 임을 알 수 있었고 최적 조건에서의 실험결과는 예측 값 78% 보다 약 7% 낮은 71% 자일로즈 수율을 얻을 수 있었다. SEM과 XRD분석을 통해 전처리 전후의 시료의 이미지 분석을 하여 산 전처리 공정을 통해 섬유소 기질 외 다른 성분인 반 섬유소가 분해 되어 추출액상으로 자일로즈로 용해 되었음을 가시적으로 확인 할 수 있었고 전처리 된 고추대의 결정화 도가 전처리 전보다 증가했음을 확인 할 수 있었다. 이로써 비결정성 물질인 반섬유소와 기타 성분들이 묽은 황산을 이용한 자일로즈 분별공정에 의해 분리되었음을 확인하였다.

Response surface methodology (RSM) was used for optimization the fraction conditions of xylose from pepper stem with dilute sulfuric acid. The independent variables were acid concentration in the range of 1.134 to 2.866%, reaction temperatures in the range of 142.68 to $177.32^{\circ}C$, and hydrolysis time in the range of 6.34 to 23.66 min. were studied. The dependent variables were xylose yield from pepper stem, and the production of by-products, for example, furfural, acetic aicd, HMF etc. Experimental results had a good match with statistical result. The maximum xylose yield obtained in this experiment was 71% concentration.

키워드

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