微波膨胀对烟梗品质及显微结构的影响

摘要

This study analyzed the effects of microwave expansion treatment on the chemical compositions , main aroma compo-nent contents and microscopic structure of the tobacco stem of three flue -cured tobacco varieties (K326, Yunyan 87 and Hongda). The results showed that the microwave treatment decreased the contents of cell wall substance , holocellulose , total sugar and reduc-ing sugar in the tobacco stem of different varieties , and their maximum decreasing amplitude was 4.85%, 8.89%, 5.88% and 3.16%respectively.The microwave treatment also increased the contents of main aroma components in the tobacco stem .After the microwave expansion treatment , the volume of tobacco stem was enlarged by several times , its tissue structure was not damaged obvi-ously, and the substances between vascular bundle tissues and within the cells of parenchymatous tissue disappeared .%分析了微波膨胀处理对3个烤烟品种（ K326、云烟87、红大）烟梗化学成分、主要致香成分含量及显微结构的影响。结果表明：微波处理使不同品种烟梗中的细胞壁物质、全纤维素、总糖、还原糖含量降低，最大降幅分别为4．85％、8．89％、5．88％、3．16％；微波处理使烟梗中的主要致香成分含量增加；微波膨胀处理使烟梗的体积增大数倍，组织结构无明显破损，维管束等组织间和薄壁组织细胞内物质消失。