An integrated process for xylooligosaccharide and bioethanol production from corncob

© 2018 Elsevier Ltd An integrated process for xylooligosaccharides (XOs) and bioethanol production from corncob was investigated. XOs were produced by a consecutive process of KOH treatment and hydrolysis by an in-house thermostable endo-xylanase from Streptomyces thermovulgaris. XO yields of 0.15 g...

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Main Authors: Pinpanit Boonchuay, Charin Techapun, Noppol Leksawasdi, Phisit Seesuriyachan, Prasert Hanmoungjai, Masanori Watanabe, Shinji Takenaka, Thanongsak Chaiyaso
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85042182983&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48396
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-483962018-04-25T10:11:54Z An integrated process for xylooligosaccharide and bioethanol production from corncob Pinpanit Boonchuay Charin Techapun Noppol Leksawasdi Phisit Seesuriyachan Prasert Hanmoungjai Masanori Watanabe Shinji Takenaka Thanongsak Chaiyaso © 2018 Elsevier Ltd An integrated process for xylooligosaccharides (XOs) and bioethanol production from corncob was investigated. XOs were produced by a consecutive process of KOH treatment and hydrolysis by an in-house thermostable endo-xylanase from Streptomyces thermovulgaris. XO yields of 0.15 g/g KOH-treated corncob (22.13 g/L) and 0.52 g/g raw corncob of cellulose-rich corncob (CRC) were obtained. After 96 h of enzymatic hydrolysis, CRC hydrolysate contained 62.16, 51.21, 10.03 and 0.92 g/L of total sugar, glucose, xylose and arabinose, respectively. Bioethanol production by separate hydrolysis and fermentation (SHF) using CRC hydrolysate, and by simultaneous saccharification and fermentation (SSF) using CRC was studied at 40 °C for thermotolerant Candida glabrata. SHF showed an ethanol yield of 0.28 g/g CRC (21.92 g/L) and ethanol productivity of 0.304 g/L/h with 93% theoretical yield. Surprisingly, by SSF, those parameters were 0.27 g/g CRC (31.32 g/L), 0.33 g/L/h and 89%, respectively. This integrated process might be a new cost-effective approach for corncob valorization. 2018-04-25T10:11:54Z 2018-04-25T10:11:54Z 2018-05-01 Journal 18732976 09608524 2-s2.0-85042182983 10.1016/j.biortech.2018.02.004 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85042182983&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/48396
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2018 Elsevier Ltd An integrated process for xylooligosaccharides (XOs) and bioethanol production from corncob was investigated. XOs were produced by a consecutive process of KOH treatment and hydrolysis by an in-house thermostable endo-xylanase from Streptomyces thermovulgaris. XO yields of 0.15 g/g KOH-treated corncob (22.13 g/L) and 0.52 g/g raw corncob of cellulose-rich corncob (CRC) were obtained. After 96 h of enzymatic hydrolysis, CRC hydrolysate contained 62.16, 51.21, 10.03 and 0.92 g/L of total sugar, glucose, xylose and arabinose, respectively. Bioethanol production by separate hydrolysis and fermentation (SHF) using CRC hydrolysate, and by simultaneous saccharification and fermentation (SSF) using CRC was studied at 40 °C for thermotolerant Candida glabrata. SHF showed an ethanol yield of 0.28 g/g CRC (21.92 g/L) and ethanol productivity of 0.304 g/L/h with 93% theoretical yield. Surprisingly, by SSF, those parameters were 0.27 g/g CRC (31.32 g/L), 0.33 g/L/h and 89%, respectively. This integrated process might be a new cost-effective approach for corncob valorization.
format Journal
author Pinpanit Boonchuay
Charin Techapun
Noppol Leksawasdi
Phisit Seesuriyachan
Prasert Hanmoungjai
Masanori Watanabe
Shinji Takenaka
Thanongsak Chaiyaso
spellingShingle Pinpanit Boonchuay
Charin Techapun
Noppol Leksawasdi
Phisit Seesuriyachan
Prasert Hanmoungjai
Masanori Watanabe
Shinji Takenaka
Thanongsak Chaiyaso
An integrated process for xylooligosaccharide and bioethanol production from corncob
author_facet Pinpanit Boonchuay
Charin Techapun
Noppol Leksawasdi
Phisit Seesuriyachan
Prasert Hanmoungjai
Masanori Watanabe
Shinji Takenaka
Thanongsak Chaiyaso
author_sort Pinpanit Boonchuay
title An integrated process for xylooligosaccharide and bioethanol production from corncob
title_short An integrated process for xylooligosaccharide and bioethanol production from corncob
title_full An integrated process for xylooligosaccharide and bioethanol production from corncob
title_fullStr An integrated process for xylooligosaccharide and bioethanol production from corncob
title_full_unstemmed An integrated process for xylooligosaccharide and bioethanol production from corncob
title_sort integrated process for xylooligosaccharide and bioethanol production from corncob
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85042182983&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48396
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