Impact of Selenium Fortification on Volatile Compounds in Rice Grains
Rice selenium fortification by application of selenium fertilizer has been widely used in the production of selenium-rich rice,however,the effect of exogenous selenium fortification on rice quality,especially for the effects on rice aroma formation is rarely studied.In this study,Solid phase microextraction(SPME)and gas chromatography-mass spectrometry(GC-MS)were used to detect the volatile components of brown rice and polished rice processed after treatments with different concentrations of selenium fertilizer.The results showed that a total of 43 volatile compounds were detected in brown rice,including 5 alcohols,8 aldehydes,4 ketones,4 esters,5 hydrocarbons,9 acids and 4 heterocyclic compounds,and a total of 35 volatile compounds were detected in polished rice,including 2 alcohols,7 aldehydes,3 ketones,3 esters,7 hydrocarbons,8 acids and 2 heterocyclic compounds,and the composition of volatile compounds in brown rice were much richer than those of them in polished rice.GC-MS results indicated that the contents of volatile compounds were not positively correlated with the concentration of selenium fertilizer,the appropriate concentration of selenium fertilizer could promote the synthesis of volatile compounds in rice,while the high concentration of selenium fertilizer would inhibit the production of volatile compounds in rice.
gas chromatography-mass spectrometryselenium fortificationricevolatile compounds
NETL
NSTL
万方数据
