Black rice Black rice Black rice (also known as purple rice) is a range of rice types of the species "Oryza sativa" L., some of which are glutinous rice. Varieties include Indonesian black rice, Philippine "balatinaw" rice, and Thai jasmine black rice. Black rice is known as "chak-hao" in Manipur, an Indian state on the eastern border with Myanmar, where desserts made from black rice are served at major feasts. Black rice is a source of iron, vitamin E, and antioxidants. The bran hull (outermost layer) of black rice contains one of the highest levels of anthocyanins found in food. The grain
12-oxophytodienoate reductase 12-oxophytodienoate reductase 12-oxophytodienoate reductase (OPRs) is an enzyme of the family of Old Yellow Enzymes (OYE). OPRs are grouped into two groups: OPRI and OPRII – the second group is the focus of this article, as the function of the first group is unknown, but is the subject of current research. The OPR enzyme utilizes the cofactor flavin mononucleotide (FMN) and catalyzes the following reaction in the jasmonic acid synthesis pathway: This reaction occurs in peroxisomes in plants. Several isozymes have been discovered, with varying substrate stereospecificity: three in "Lycopersicon esculentum", 13 in "Oryza sativa", and five in "Arabidopsis thaliana".