文献类型：期刊文献

英文题名：Factors Influencing Polyol Liquefaction of Nut Shells of Different Camellia Species

作者：Zhang, Jinping[1] Du, Menghao[1] Hu, Lisong[1]

第一作者：张金萍

通信作者：Zhang, JP[1]|[a00054d954391472fed4f]张金萍;

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China

年份：2016

卷号：11

期号：4

起止页码：9956-9969

外文期刊名：BIORESOURCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000391801300136)】；

基金：This study was supported by the Provincial Department of Science and Technology of Zhejiang, China (Grant No. 2013C32096).

语种：英文

外文关键词：Camellia nut shell; Chemical composition; Liquefaction; Cellulose Crystallinity index; Liquefaction kinetics

摘要：The liquefaction rates and kinetics of nut shells of different Camellia species in PEG400/glycerol/H2SO4 liquefying solvent were investigated. Changes in major components including cellulose, hemicellulose, and lignin as well as cellulose crystallinity of the nut shells were determined. The compositions of the liquefaction residues were analyzed. Results indicated that, under the same conditions, the liquefaction rates of nut shells of different Camellia species were noticeably different and the PEG400/glycerol/H2SO4 liquefaction agent was not suitable for the liquefaction of the nut shells of all Camellia species. The burst liquefaction of Camellia nut shells (CNSs) that occurred during the first stage was due to the rapid degradation of hemicellulose, acid-soluble lignin, and amorphous cellulose. The liquefaction during the second stage became very slow, mostly because the swelling and decomposition of crystalline cellulose was very difficult to achieve with the liquefying agent and the liquefaction products inhibited liquefaction at later stages. The liquefaction residues of CNSs were composed of crystalline cellulose, small amounts of hemicellulose, acid-insoluble lignin, and ash. Ash was partially dissolved in the liquefying agent. The liquefaction rates of all CNSs tested in this study showed linear relationships with time, with coefficients of determination (R-2) greater than 0.7082, indicating that the liquefaction of CNS was a pseudo-first-order reaction.