Proximate composition and health benefit of Roselle leaf (Hibiscus sabdariffa). Insight on food and health benefits

Abstract

Zobo leaves, also known as Roselle leaves are leaves of the Malvaceae plant Hibiscus sabdariffa, they are a common culinary ingredient as well as a traditional medicine in many countries including their role in treating various ailments and promoting overall health. The biological properties of the leaves of this plant have been studied and found to be of benefit to general improvement of health such biological properties as anti-inflammatory, anti-diabetic, anti-hypertensive, anti-cancer effects, potency against respiratory infections, skin diseases, and gastrointestinal disorders etcetera. These all stem from the bioactive components (anthocyanins, polyphenols, flavonoids, protocatechuic acid, malic acid, ascorbic acid, hibiscus acid contained in it. Our review focuses on these biological properties of Hibiscus sabdariffa and the bioactive compounds that are responsible for them. The nature, proximate composition including nutrient and mineral content, physicochemical properties and traditional uses of the plant according to different cultures are also included in our work. Finally, the importance of further research to fully understand the pharmacology and potential therapeutic applications of Roselle leaf and its bioactive compounds are highlighted.