Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production

doi:10.1016/j.cjche.2015.04.016

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (7): 1188-1193.DOI: 10.1016/j.cjche.2015.04.016

Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production

Yuanyuan Li¹, Yelong Zhang¹, Hongbo Zheng¹, Jian Du², Hongman Zhang¹, Juanzi Wu³, He Huang²

1 College of Science, Nanjing Tech University, Nanjing 210009, China;
2 China State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China;
3 Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

收稿日期:2014-04-03 修回日期:2014-07-10 出版日期:2015-07-28 发布日期:2015-08-21
通讯作者: Hongman Zhang
基金资助:
Supported by Jiangsu Agriculture Science and Technology Innovation Fund (CX(11)4048).

Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production

Yuanyuan Li¹, Yelong Zhang¹, Hongbo Zheng¹, Jian Du², Hongman Zhang¹, Juanzi Wu³, He Huang²

1 College of Science, Nanjing Tech University, Nanjing 210009, China;
2 China State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China;
3 Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

Received:2014-04-03 Revised:2014-07-10 Online:2015-07-28 Published:2015-08-21
Contact: Hongman Zhang
Supported by:
Supported by Jiangsu Agriculture Science and Technology Innovation Fund (CX(11)4048).

摘要/Abstract

摘要： Five elephant grass cultivars, Pennisetum purpureum. cv. Huanan (Huanan), P. purpureum. cv. N51 (N51), P. purpureum. cv. Sumu No. 2 (Sumu-2), (Pennisetum americanum × P. purpureum) × P. purpureum cv. Guimu No. 1 (Guimu-1) and P. americanumcv. Tift23A × P. purpureum cv. Tift N51 (Hybrid Pennisetum), at three harvest stages were studied. With dilute sulfuric acid pretreatment followed by enzymatic hydrolysis, it is found that cellulose conversion of the five elephant grass cultivars harvested in August and September is higher than that harvested in October. The cellulose conversion for elephant grass cultivars harvested in August and September follows an order of Hybrid Pennisetum> Sumu-2> Huanan> Guimu-1> N51. This may be explained by the fact that lignification is gradually strengthened with time, inhibiting degradation of cellulose and hemicellulose. Moreover, cellulose conversions of Hybrid Pennisetum, Sumu-2 and Huanan harvested in August and September are higher based on hierarchical clustering results.

关键词: Energy crop, Elephant grass, Dilute sulfuric acid pretreatment, Enzymatic hydrolysis, Glucose

Abstract: Five elephant grass cultivars, Pennisetum purpureum. cv. Huanan (Huanan), P. purpureum. cv. N51 (N51), P. purpureum. cv. Sumu No. 2 (Sumu-2), (Pennisetum americanum × P. purpureum) × P. purpureum cv. Guimu No. 1 (Guimu-1) and P. americanumcv. Tift23A × P. purpureum cv. Tift N51 (Hybrid Pennisetum), at three harvest stages were studied. With dilute sulfuric acid pretreatment followed by enzymatic hydrolysis, it is found that cellulose conversion of the five elephant grass cultivars harvested in August and September is higher than that harvested in October. The cellulose conversion for elephant grass cultivars harvested in August and September follows an order of Hybrid Pennisetum> Sumu-2> Huanan> Guimu-1> N51. This may be explained by the fact that lignification is gradually strengthened with time, inhibiting degradation of cellulose and hemicellulose. Moreover, cellulose conversions of Hybrid Pennisetum, Sumu-2 and Huanan harvested in August and September are higher based on hierarchical clustering results.

Key words: Energy crop, Elephant grass, Dilute sulfuric acid pretreatment, Enzymatic hydrolysis, Glucose

Yuanyuan Li, Yelong Zhang, Hongbo Zheng, Jian Du, Hongman Zhang, Juanzi Wu, He Huang. Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production[J]. Chinese Journal of Chemical Engineering, 2015, 23(7): 1188-1193.

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Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production

Preliminary evaluation of five elephant grass cultivars harvested at different time for sugar production

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