Evaluation of green extraction methods on the chemical and nutritional aspects of roselle seed (Hibiscus sabdariffa L.) oil

Roselle is one of the valuable plants grown in some regions of Egypt, which is used to make juices or as natural food color additive. Roselle seeds are waste, which can be used as a source of non-traditional oil, nutritious or functional compound. The evaluation of green extraction methods including supercritical CO 2 (SC-CO 2 ), screw, hydraulic press comparing to traditional method on oil yield, total phenolics, antioxidant activity (DPPH) and...