【摘要】 采用改进后的Arnon法及气相色谱—质谱联用技术,探索不同白肋烟品种叶绿体色素及相关致香物质的变化规律。结果表明,成熟时品种间叶绿素含量0.623~0.735 mg/g,变异系数7.07%;类胡萝卜素含量0.169~0.217 mg/g,变异系数11.82%;叶绿素/类胡萝卜素比值2.887~4.336,变异系数18.07%;不同品种间叶绿素/类胡萝卜素比值差异>类胡萝卜素>叶绿素。调制后品种间叶绿素裂解的产物含量148.12~230.01 mg/g,变异系数17.39%;类胡萝卜素类降解产物含量53.036~91.344 mg/g,变异系数23.33%;品种间类胡萝卜素类降解产物含量差异>叶绿素裂解的产物;综合结果,TN90、Ky907品种成熟时叶绿素含量略低,但类胡萝卜素含量略高,叶绿素/类胡萝卜素低,比叶重较适宜,晾制后相应降解的致香物多,更有利烟叶香气品质的形成。更多还原

【Abstract】 The improved Arnon method and gas chromatography-mass spectrometry were used to explore burley tobacco chloroplast pigments and related changes of aroma of different varieties. The results showed that mature varieties total chlorophyll was 0. 623- 0. 735 mg / g,coefficient of variation was 7. 07 %; carotenoid content was 0. 169- 0. 217mg / g,coefficient of variation was 11. 82 %,chlorophyll / carotenoid ratio was 2. 887- 4. 336,and coefficient of variation was 18. 07 %. Total chlorophyll / carotenoid ratio,carotenoids,total chlorophyll of different varieties,and modulated chlorophyll pyrolysis product varieties content was 148. 12- 230. 01mg / g,coefficient of variation was 17. 39%; degradation products of carotene content was 53. 036- 91. 344 mg / g,coefficient of variation was 23. 33 %. Degradation products between the carotenoids content; chlorophyll pyrolysis product of the variety; consolidated results,TN90,Ky907 varieties mature chlorophyll content is slightly lower,but slightly higher carotenoid content,total chlorophyll / carotenoid low,specific leaf weight is more appropriate,air system for the corresponding degradation of property and more aroma,more conducive to the formation of quality tobacco flavor.更多还原