Integrated production of second generation ethanol and lactic acid from steam-exploded elephant grass

BioChem - DOS

Search

메타 데이터

바이오화학분류

- 바이오플라스틱
  1. 플라스틱
- 바이오정밀화학
  1. 용매
  2. 화학제품
  3. 연료
  4. 기타
- 화장품용 기능성소재
  1. 계면활성제⁄증점제
- 의료용 화학소재
  1. 치료제
  2. 식품첨가제

논문

Integrated production of second generation ethanol and lactic acid from steam-exploded elephant grass

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Montipó , Sheila; Ballesteros, Ignacio; Fontana, Roselei Claudete; Liu, Siqing; Martins, Ayrton Figueiredo; Ballesteros, Mercedes; Camassola, Marli

초록

Abstract Elephant grass was subjected to steam explosion to enhance cellulose accessibility and convert it into ethanol. After catalyzed pretreatment at 190 °C for 5 min, enzymatic hydrolysis was carried out using high rate of solid loading combined with different enzyme dosages. Assays employing 20% (w/v) solids loading and an enzyme dosage of 20 FPU g−1 substrate led to a yield of 86.02 g glucose released per 100 g potential glucose in the water insoluble solids. This condition was selected to carry out the simultaneous saccharification and fermentation procedure through S. cerevisiae CAT-1, producing 42.25 g L−1 ethanol with a yield of 74.57% regard to the maximum theoretical. The liquor containing C5 and C6-sugars was successfully converted into lactic acid using L. buchneri NRRL B-30929, resulting in 13.35 g L−1 with a yield of 68.21% in relation to the maximum theoretical. Highlights <UL> <LI> A biorefinery platform was designed to use elephant grass for fuels and chemicals. </LI> <LI> Pretreatment and hydrolysis with high solid load resulted in high sugar contents. </LI> <LI> Simultaneous saccharification and fermentation led to high ethanol yield. </LI> <LI> Lactic acid was produced in parallel from pentoses conversion in the liquor. </LI> </UL>

발행연도

2018

발행기관

Elsevier

라이선스

publisher-specific-oa

ISSN

0960-8524

권

249

페이지

pp.1017-1024