Fatty acids and amino acids profile of organic black rice (Oryza sativa L.) milk

Abstract

The popularity of plant-based milk has been increasing over the last few years to substitute animal milk. Cereal such as black rice (Oryza sativa L.) is a plant material that can be used to produce rice milk. Black rice has been reported to have high vitamin and mineral content and high fiber. Previous research also has shown the functionality of black rice, such as antioxidant, antihypertensive, and antihyperlipidemic. For this reason, black rice has the potency to be further processed into functional food such as rice milk. However, there is still a lack of basic information about the nutritional profile of black rice milk. Therefore, this research aimed to examine the fatty acids and amino acids profile of black rice milk. Fatty acid analysis was carried out using GC-FID. Amino acid content was analyzed using UPLC. The fatty acid profile analysis revealed that polyunsaturated fatty acid was the most abundant (0.1062%) in black rice milk, followed by saturated fatty acid (0.062%). The highest amino acid found in black rice milk was glutamic acid (0.0045 g/100 mL), aspartic acid (0.00269 g/100 mL), and arginine (0.0228 g/100 mL)