Generally perceived as health benefiting spice, mustard seeds are indeed very rich in phytonutrients, minerals, vitamins, and anti-oxidants.
Being one of the chief oil seeds, mustards are indeed very high in calories; 100 g of seeds provide 508 calories. Nonetheless, the seeds are made of quality proteins, essential oils, vitamins, minerals, and dietary fiber.
The seeds are high in essential oils as well as plant sterols. Some of the important sterols include such as brassicasterol, campesterol, sitosterol, avenasterol, and stigmasterol. Some of the glucosinolate and fatty acids in the seeds are sinigrin, myrosin, erucic, eicosanoic, oleic, and palmitic acids.
Mustard seeds are an excellent source of essential B-complex vitamins such as folates, niacin, thiamin, riboflavin, pyridoxine (vitaminB-6), pantothenic acid. These vitamins are essential in the sense that body requires them from external sources to replenish. These B-complex groups of vitamins help in enzyme synthesis, nervous system function and regulating body metabolism.
100 g of mustards provide 4.733 mg of niacin (vitamin B-3). Niacin is a part of nicotinamide coenzymes that help lower blood cholesterol and triglyceride levels.
Mustard seeds contain flavonoid and carotenoid antioxidants such as carotenes, zeaxanthin, and lutein. In addition, the seeds compose a small amount of vitamin antioxidants such as vitamin-A, C, and vitamin-K.
The seeds are an excellent source of vitamin-E, gamma tocopherol; contain about 19.82 mg per 100 g (about 132% of RDA). Vitamin-E is a powerful lipid soluble antioxidant, required for maintaining the integrity of cell membrane of mucosa and skin by protecting it from harmful oxygen-free radicals.
Mustards are rich source of health benefiting minerals. Calcium, manganese, copper, iron, selenium and zinc are some of the minerals especially concentrated in these seeds. Calcium helps build bone and teeth. Manganese used by the body as a cofactor for the antioxidant enzyme superoxide dismutase. Copper required in the production of red blood cells. Iron is essential for the red blood cell formation and cellular metabolism