Analysis of Nutritional Quality of the Leaf Mustard'Nainaiqingcai'
The leaf mustard'Nainaiqingcai'is one kind of local mustards in Southwest China.There are many varieties of'Nainaiqingcai',and most of them are reserved by farmers and local conventional species.However,the studies on the nutritional quality of'Nainaiqingcai'is still limited.In this study,the content of soluble protein,chlorophyll,carotenoids,vitamin C,proanthocyanidins,flavonoids and total phenolics,as well as antioxidant capa-city in 25 varieties of'Nainaiqingcai'were determined,and the differences in nutritional quality of'Nainaiqingcai'were explored according to the content of these indices,and then the variety with the highest nutritional value was selected.Results showed that significant differences in nutritional components were observed among different varieties of'Nainaiqingcai'.The soluble protein content in the 25 varieties ranged from 4.26 to 168.45 mg/g,chlorophyll content from 3.24 to 17.15 mg/g,carotenoid content from 0.15 to 1.88 mg/g,vitamin C content from 1.26 to 4.98 mg/g,proanthocyanidins content from 2.64 to 6.68 mg/g,flavonoid content from 2.06 to 17.95 mg/g,and total phenolics content from 6.56 to 15.70 mg/g.The antioxidant capacity measured by ABTS and FRAP was between 23.92％to 47.17％and 28.82 to 125.79 mg/g,respectively.Among the 25 varieties of'Nainaiqingcai',CCB-4 had the highest contents of all these indices compared with other varieties except for soluble protein,suggesting that CCB-4 is the variety with the best nutritional quality.The results of correlation analysis showed that the antioxidant capacity was significantly or extremely significantly positively correlated with soluble protein,caro-tenoids,vitamin C,flavonoids,and total phenolics.The results of this study can provide a theoretical basis for the nutritional evaluation,development and utilization of'Nainaiqingcai'.
NETL
NSTL
万方数据
