Assessment of physical, chemical and antioxidant properties of few pigmented glutinous rice grown in Northeast India

Abstract

Pigmented rice is a good source of nutraceuticals because it contains antioxidants such as anthocyanins, flavonoid and other phenolic compound as well as essential minerals. On an average, the three mineral contents in rice genotypes followed an order of Zn > Fe > Cu. The anthocyanin content among 22 pigmented genotypes ranged from 1.56 to 7.56 mg cyanidine 3-O-glucoside per 100 g. The DPPH activity was highest in the pigmented glutinous rice cultivar Kmj Bora-50 (21.73 %) and lowest in Til Bora-2 (14.54 %). Total phenolic acid content was highest in the pigmented glutinous rice cultivar Kmj Bora-50 (80.16 mg GAE per 100 g) and lowest in Ronga Bora-6 (53.47 mg GAE per 100 g). The Flavonoid content was highest in the pigmented glutinous rice cultivar Kmj Bora-50 (60.76 mg QE per 100 g) and lowest in Ronga Bora-6 (45.57 mg QE per 100 g). A significant correlation was observed among different parameters studied. The amount of phytochemicals present in the fresh samples decreased after cooking.