Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Effects of stalk-cutting time on the volatile matter and quality of burley tobacco

CHAI Jia-rong(Yunnan Tobacco Research Institute,Yunnan Yuxi 653100,China)  
The volatile matter of burley tobacco in different stalk-cutting times were determined with simultaneous distillation and extraction,headspace separation and GC/MS.The results showed that when the stalk-cutting time was from 7 to 28 days after topping period,the volatile composition of hydrocarbons,ketones,aldehydes and the contents of hydrocarbons,ketones,aldehydes,nitrogen,mixed-annulus increased with the stalk-cutting time postponing,but decreased after 28 days.The composition and content of acid reduced after 14 days.The content of aldehyde was the highest in 14 days after topping period,the second in 28 days after topping period.The content of reducing sugar and nicotine increased with the stalk-cutting time postponing,but the content of protein decreased.Smoking quality was improved with the stalk-cutting time postponing,but was bad in 35 days after topping period.The suitable stalk-cutting times was from 7 to 28 days after topping period.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved