Abstract:For the purpose of breeding new varieties and processing,the starch,anthocyanin and mineral contents of four induced mutant black fragrant rice varieties from southern Henan were determined. The results showed that there were significant differences in the content of starch,anthocyanin and mineral content among different varieties of black fragrant rice. Through electron microscope scanning observation,it was found that there was no significant difference in starch granule structure between black fragrant rice and control ′NIP′,but the starch content（36.5%-50.2%）,extraction rate（52.8%-60.7%）and extraction purity（70.0%-80.0%）of black fragrant rice were all lower than those of ′NIP′（64.7%,71.2% and over 90.0%）. In terms of starch composition,the black fragrant rice varieties ′LN48-2′ and ′LN48-3′ were close to ′NIP′,with amylose accounting for about 14%-16% and amylopectin accounting for 84%-86%,while the varieties ′LN54′ and′LN55′ were similar to the variety ′LN56 CK′,with amylopectin accounting for about 100% of the starch.Through ultra-high performance liquid chromatography analysis,the anthocyanin content of ′LN48-3′ was the highest,reaching 109.29 mg/100 g,while that of′LN48-2′was the lowest,reaching 84.39 mg/100 g,but their anthocyanin compositions were the same,both composed of cyanidin-3-O-glucoside and peonidin-3-O-glucoside.The mineral contents of black fragrant rice were analyzed using an inductively coupled plasma mass spectrometer.The Ca and Zn contents of the′LN48-2′variety were the highest,reaching 1 370.8 mg/kg and 60.3 mg/kg,respectively,followed by ′LN54′,reaching 956.3 mg/kg and 55.2 mg/kg,respectively. The Fe content range of the innovative varieties was 57.0-82.3 mg/kg,which was higher than that of the control black fragrant rice′LN56 CK′.