山核桃等3种果蓬化学成分分析和利用评价的研究

Research on Chemical Composition Analysis and Utilization Evaluation on Hickory of Three Epicarps

以机制炭致密成型常用原料杉木屑、松木屑为对照,对比分析了山核桃、板栗、油茶3种果蓬的灰分、抽出物、纤维素、木质素等9种化学成分,结果表明:山核桃果蓬的灰分为12.23%;从抽出物对比来看,山核桃、板栗和油茶果蓬的冷水抽出物、热水抽出物、1%NaOH抽出物均大于杉木屑和松木屑,说明果蓬类原料比杉木屑、松木屑含有更多的低分子多聚戊糖和低分子木质素;纤维素和木质素含量低、灰分含量高也限制了果蓬类原料大量替代木屑制备机制炭。

This paper comparatively analyzed ash contents, extractives, cellulose, lignin and etc. , in total nine chemical components from epicarps of hickory, chestnut, and sasanqua to pine sawdusts and fir sawdusts, which are normal materials for machine-made charcoal briquettes. The conclusions are：the hickory epicarp is constrained in massive production of machine-made charcoal as a substitute of sawdust due to too much ash content（ 12.23% ） ; the amont of extractives from the hickory epicarp and the chestnut epicarp, extrated by means of cold water extracting, hot water extracting, and 1% NaOH extracting separately, are all higher than that from pine sawdusts and fir sawdusts, which illustrates the epiearp contents more low-molecular pentosan and low-molecular lignin than that of pine and fir dust that the former is limited to replace the latter in producing machine-made charcoal in great number.