热带农业科学2025，Vol.45Issue(5)：9-16,8.DOI:10.12008/j.issn.1009-2196.2025.05.002
槟榔纤维素的结晶及热解特性研究
Study on the Crystallization and Pyrolysis Characteristics of Cellulose from Betel Nut
摘要
Abstract
To study the pyrolysis characteristics of cellulose from betel nuts and the effects of drying methods,high tem-perature,and enzymatic hydrolysis on cellulose crystallinity,betel nuts dried by freeze drying and hot air drying were used as test materials to prepare dried fibers,dried fibers treated at 120℃for 30 min with hot air,and dried fibers treated with cellu-lase and xylanase.The cellulose in the fibers was then extracted,and its crystallinity was determined via a Fourier transform infrared spectrometer and X-ray diffractometer.The pyrolysis characteristics of cellulose were also studied via thermogravim-etric analysis.Compared with freeze drying,hot air drying increased the crystallinity of cellulose.High-temperature heat treatment of hot-air-dried fibers reduced the crystallinity of cellulose.At low concentrations,treatment of the dried fibers with cellulase and xylanase resulted in partial hydrolysis of the noncrystalline areas of cellulose,leading to an increase in crystal-linity.During cellulose pyrolysis,the activation energy of hot-air-dried cellulose was greater than that of freeze-dried cellulose,whereas the frequency factor was lower,indicating that the structural energy of the hot-air-dried fibers increased,the pyrolysis resistance increased,and the hardness was greater than that of the freeze-dried fibers.These findings provide valuable insights into the hardening mechanism of betel nuts,the drying of fresh betel nuts,and the softening of hot-air-dried fruits.关键词
槟榔/纤维素/结晶/热解/冻干法/热风干燥法Key words
betel nut/cellulose/crystallization/pyrolysis/freeze drying method/hot air drying method分类
农业科技引用本文复制引用
李旺,杨大伟..槟榔纤维素的结晶及热解特性研究[J].热带农业科学,2025,45(5):9-16,8.基金项目
基于槟榔纤维特性的食用槟榔干果软化配套技术研究(No.xczx-2023003). （No.xczx-2023003）
