Changes in composition, cellulose degradability and biochemical methane potential of Miscanthus species during the growing season

Xiaowei Peng; Chao Li; Jing Liu; Zili Yi; Yejun Han

doi:10.1016/j.biortech.2017.03.128

Changes in composition, cellulose degradability and biochemical methane potential of Miscanthus species during the growing season

Bioresour Technol. 2017 Jul:235:389-395. doi: 10.1016/j.biortech.2017.03.128. Epub 2017 Mar 24.

Authors

Xiaowei Peng¹, Chao Li², Jing Liu³, Zili Yi⁴, Yejun Han⁵

Affiliations

¹ State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
² Division of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, Naturvetarvägen 14, 22241 Lund, Sweden; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China. Electronic address: chao_h.li@biotek.lu.se.
³ Division of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, Naturvetarvägen 14, 22241 Lund, Sweden; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
⁴ College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
⁵ State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: yjhan@ipe.ac.cn.

PMID: 28384592
DOI: 10.1016/j.biortech.2017.03.128

Abstract

The composition, cellulose degradability and biochemical methane potential (BMP) of M. sinensis, M. floridulus, Miscanthus×giganteus and M. lutarioriparius were investigated concomitantly at different growth/harvest times during their growing season. For all the four species, there was only a slight change in the compositional content. Meanwhile there was a huge change in the BMP values. At the growth time of 60days the BMPs ranged from 247.1 to 266.5mlg^-1VS. As growth time was prolonged, the BMPs decreased by 11-35%. For each species, the BMP was positively correlated to the cellulose degradability with the correlation coefficients (R²) ranging from 0.8055 to 0.9925. This suggests that besides the biomass yield, it is justifiable to consider cellulose degradability when selecting the suitable harvest time for biofuels production from Miscanthus, especially in tropical and subtropical regions where Miscanthus can be harvested twice or more within a year.

Keywords: Biofuels; Cellulose; Growing season; Methane potential; Miscanthus.

MeSH terms

Biofuels
Cellulose / chemistry*
Methane / biosynthesis*
Poaceae / chemistry
Seasons

Substances

Biofuels
Cellulose
Methane