摘要
[目的]对5种常见坚果壳的元素组成、纤维素含量和结晶度进行分析。[方法]采用X射线衍射技术按照高度法、切线法、分峰面积法3种方法对坚果壳中的纤维素的结晶度进行了分析,采用X射线光电子能谱技术对坚果壳的成分和原子比进行了分析。[结果]X射线衍射测试结果表明,板栗、花生、瓜子、夏威夷果和核桃皮层纤维素的结晶度不同,结晶度变化趋势相同;X射线光电子能谱测试结果表明,这5种坚果壳主要是由C、O、N、Si元素组成,成分含量有差异。夏威夷果壳的结晶度最大,板栗壳原料纤维素结晶度最小;花生中的氮元素含量最高,原子百分比达到3.78%,花生中的O/C和N/C比值最大,分别达到0.29和0.05,Si/C原子比最高的是花生壳。[结论]该研究结果可为硬果壳的综合开发利用提供依据。
Objective] The aim was to analyze element composition, cellulose content and crystallinity of 5 common net shells.[Method] Ac-cording to the height method, the tangent method, the peak area method, crystallinity of cellulose of net shells were analyzed by X -ray diffrac-tion （XRD）.The composition and atomic ratio of the nut shell were studied by X ray photoelectron spectroscopy.[Result] The results showed that the crystallinity of cellulose in chestnut, peanut, sunflower, Hawaii nut and walnuts cortex were in varying degrees, the change was in the same tendency;X-ray photoelectron spectroscopy indicated that the shell of a nut was mainly composed of C , O, N, Si, and there were differ-ences in content.The crystallinity of Hawaii shell was maximum , and that of chestnut shell cellulose was minimum;N content in peanut was the highest, atomic percentage reached 3.78%, O/C and N/C ratio in peanut was maximum, respectively, reached 0.29 and 0.05.The Si/C atom-ic ratio was the highest in the peanut shell.[Conclusion] The results can provide basis for comprehensive development and utilization of hard shell.
出处
《安徽农业科学》
CAS
2016年第17期21-23,129,共4页
Journal of Anhui Agricultural Sciences
关键词
X射线技术
坚果壳
纤维
结晶度
成分
X-ray spectroscopy
Nut shell
Cellulose
Crystallinity
Component
