Mild pretreatment of yellow poplar biomass using sequential dilute acid and enzymatically-generated peracetic acid to enhance cellulase accessibility
Biomass contains cellulose, xylan and lignin in a complex interwoven structure that hinders enzymatic hydrolysis of the cellulose. To separate these components in yellow poplar biomass, we sequentially pretreated with dilute sulfuric acid and enzymatically-generated peracetic acid. In the first step...
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| Published in | Biotechnology and bioprocess engineering Vol. 22; no. 4; pp. 405 - 412 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Seoul
The Korean Society for Biotechnology and Bioengineering
01.08.2017
Springer Nature B.V 한국생물공학회 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1226-8372 1976-3816 |
| DOI | 10.1007/s12257-017-0139-7 |
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| Abstract | Biomass contains cellulose, xylan and lignin in a complex interwoven structure that hinders enzymatic hydrolysis of the cellulose. To separate these components in yellow poplar biomass, we sequentially pretreated with dilute sulfuric acid and enzymatically-generated peracetic acid. In the first step, the dilute acid with microwave heating (140°C, 5 min) hydrolyzed 90% of xylan. The xylose yield in hydrolysate after dilute acid pretreatment was 83.1%. In the second step, peracetic acid (60°C, 6 h) removed up to 80% of lignin. This sequential pretreatment fractionated biomass into xylan and lignin, leaving a solid residue enriched in cellulose (~80%). The sequential pretreatment enhanced enzymatic digestibility of the cellulase by removal of the other components in biomass. The glucose yield after enzymatic hydrolysis was 90.5% at a low cellulase loading (5 FPU/g of glucan), which is 1.6 and 18 times higher than for dilute acid-pretreated biomass and raw biomass, respectively. This novel sequential pretreatment with dilute acid and peracetic acid efficiently separates the three major components of yellow poplar biomass, and reduces the amount of cellulase needed. |
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| AbstractList | Biomass contains cellulose, xylan and lignin in a complex interwoven structure that hinders enzymatic hydrolysis of the cellulose. To separate these components in yellow poplar biomass, we sequentially pretreated with dilute sulfuric acid and enzymatically-generated peracetic acid. In the first step, the dilute acid with microwave heating (140oC, 5 min) hydrolyzed 90% of xylan. The xylose yield in hydrolysate after dilute acid pretreatment was 83.1%. In the second step, peracetic acid (60oC, 6 h) removed up to 80% of lignin. This sequential pretreatment fractionated biomass into xylan and lignin, leaving a solid residue enriched in cellulose (~80%). The sequential pretreatment enhanced enzymatic digestibility of the cellulase by removal of the other components in biomass.
The glucose yield after enzymatic hydrolysis was 90.5% at a low cellulase loading (5 FPU/g of glucan), which is 1.6 and 18 times higher than for dilute acid-pretreated biomass and raw biomass, respectively. This novel sequential pretreatment with dilute acid and peracetic acid efficiently separates the three major components of yellow poplar biomass, and reduces the amount of cellulase needed. KCI Citation Count: 3 Biomass contains cellulose, xylan and lignin in a complex interwoven structure that hinders enzymatic hydrolysis of the cellulose. To separate these components in yellow poplar biomass, we sequentially pretreated with dilute sulfuric acid and enzymatically-generated peracetic acid. In the first step, the dilute acid with microwave heating (140°C, 5 min) hydrolyzed 90% of xylan. The xylose yield in hydrolysate after dilute acid pretreatment was 83.1%. In the second step, peracetic acid (60°C, 6 h) removed up to 80% of lignin. This sequential pretreatment fractionated biomass into xylan and lignin, leaving a solid residue enriched in cellulose (~80%). The sequential pretreatment enhanced enzymatic digestibility of the cellulase by removal of the other components in biomass. The glucose yield after enzymatic hydrolysis was 90.5% at a low cellulase loading (5 FPU/g of glucan), which is 1.6 and 18 times higher than for dilute acid-pretreated biomass and raw biomass, respectively. This novel sequential pretreatment with dilute acid and peracetic acid efficiently separates the three major components of yellow poplar biomass, and reduces the amount of cellulase needed. |
| Author | Lee, Hyeong Rae Park, Tai Hyun Kazlauskas, Romas J. |
| Author_xml | – sequence: 1 givenname: Hyeong Rae surname: Lee fullname: Lee, Hyeong Rae organization: School of Chemical and Biological Engineering, Seoul National University – sequence: 2 givenname: Romas J. surname: Kazlauskas fullname: Kazlauskas, Romas J. email: rjk@umn.edu organization: Department of Biochemistry, Molecular Biology & Biophysics and the Biotechnology Institute, University of Minnesota – sequence: 3 givenname: Tai Hyun surname: Park fullname: Park, Tai Hyun email: thpark@snu.ac.kr organization: School of Chemical and Biological Engineering, Seoul National University |
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| Copyright | The Korean Society for Biotechnology and Bioengineering and Springer-Verlag GmbH Germany 2017 Biotechnology and Bioprocess Engineering is a copyright of Springer, 2017. |
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| SubjectTerms | Biomass Biosynthesis Biotechnology Cellulase Cellulose Chemistry Chemistry and Materials Science Digestibility Dilution endo-1,4-beta-glucanase enzymatic hydrolysis Glucan glucose hydrolysates Hydrolysis Industrial and Production Engineering Lignin Liriodendron tulipifera microwave treatment Oxidation Peracetic acid Poplar Pretreatment Research Paper Sulfuric acid Xylan Xylose 생물공학 |
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| Title | Mild pretreatment of yellow poplar biomass using sequential dilute acid and enzymatically-generated peracetic acid to enhance cellulase accessibility |
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