Effect of different concentrations of ZnSO4 in fragrant red brown rice on seed germination,Zn concentration and other nutrient content

Fragrant red brown rice was soaked for 12 h by different concentrations of Zn SO4( 0~250 mg /L),then germinated for 24 h with deionized water. Germination rates,concentration of Zn,GABA( γ- aminobutyric acid),protein and Vitamin C content of fragrant red brown rice was determined. The results showed that compared with nongerminated fragrant red brown rice,germinated fragrant red brown rice could enrich high amount of Zn when the concentration of Zn SO4between( 25 ~ 250 mg / L),the content of Zn in red brown rice increased by 355% ~1225%.The concentration of Zn SO4between( 25~100 mg / L) could meet RDA of Zn.Compared with nongerminated fragrant red brown rice,when the concentration of Zn SO4between( 0 ~ 250 mg / L),the content of GABA,protein and Vitamin C increased by 134% ~ 291%,9% ~ 28%,131% ~ 176% respectively. The concentrations of Zn SO4( 0~100 mg / L) was appropriate for red brown rice germination,GABA accumulation.,100 mg / L Zn SO4 was the most suitable concentration for protein and Vitamin C accumulation. Considering germination rates,RDA of Zn and nutrient content,the most suitable concentration of Zn SO4 could be 100 mg / L.