FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (6): 48-51.

Previous Articles     Next Articles

Collective Study on Content Changes of Nitrate,Nitrite and VC in Buds of Different Toona sinensis Provenances Species

 YANG  Yu-Zhen, PENG  Fang-Ren, CAO  Yi-Da   

  1. 1.College of Forest Resources and Environment, Nanjing Foresty University, Nanjing 210037, China; 2.Department of Life Science, Zhengzhou Normal College, Zhengzhou 450044, China
  • Online:2007-06-15 Published:2011-12-31

Abstract: The changes of nitrate, nitrite and VC contents were studied respectivrvely in buds of different Toona sinensis provenances species, sampled from Nanjing, Sichuan, Hunan, Hubei, Henan and Shanxi. The results showed that the nitrate, nitrite and VC contents are significantly different at the same picking time. By integrated assay to the above contents at different picking time and species phases, Hunan provenance is choose as the ideal edible product, because both its nitrate and nitrite contents are relatively low, while its VC is really high. At the meantime the contents of nitrate and nitrite of the other provenances are also in accordance with the edible standard before April 9th, though its VC content is moderate. So they are also reassured to be safely edible.

Key words: Toona sinensis, provenances, nitrate, nitrite, VC