Abstract
The family Annonaceae comprises about 80 genera and 850 species occurring in the tropics, but with relics of earlier distributions remaining in some temperate regions. The large, edible, pulpy fruits typically called “annona” include species of Annona, custard apple (A. squamosa), soursop/graviola (A. muricata) and bullock's heart (A. reticulata) which are known to have excellent health and medicinal benefits which deserve to be further explored. They contain antioxidants, possess anti cardio-vascular, anti-obese, anti-diabetic, anti-cancer, anti-microbial activity and have a positive effect on blood haemoglobin. It is also efficacious to control blood pressure, normalize digestive function, cure constipation, treat diarrhoea and dysentery. High potassium and magnesium levels in these fruits help to protect against heart disease. These fruits also contain vitamin A, which is beneficial for a healthy skin, hair and eyes. High magnesium content helps balance the water in the body, remove acid from the joints and reduce the symptoms of rheumatism and arthritis. The potassium contained in it, helps fight muscle weakness and fatigue. In the light of the above facts, a biochemical study was made to assess their proximate principle and mineral content to pave the way for better utilization, to meet nutritional security and to aid in disease prevention.
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