Ethnonutritional study of fruits of Solanum aethiopicum L. and Solanum melongena L. in the district of Galim (Bamboutos) in West Cameroon

Abstract Solanum aethiopicum L. and Solanum melongena L. are endemic plants whose fruits are used in the composition of cultural dishes in West Cameroon including Yellow, Black, Eggplant, Nkui and Okra sauces. This work aims to conduct an ethnonutritional study based on the knowledge and consumption of these dishes. Surveys were carried out including 480 persons of the district of Galim (Kieneghang I and Mbezaté) in the Bamboutos division in West Cameroon and the results revealed that the vernacular and common names for Solanum aethiopicum L. and Solanum melongena L. are respectively “Shusshui” and “sweet egglant”; “Nzuinzuiè” and “bitter eggplant”. These fruits are rounded and spindle in shape. The fruits of Solanum aethiopicum L. exist in green, yellow and red colors with a mild flavor, while those of Solanum melongena L. are red and bitter. These fruits are preserved by sun-drying, smoking, and parboiled before drying. Their cultivation is traditional with a duration of 3–7 months using organic and chemical fertilizers. The age group 41–50 years had a good knowledge of fruits while the age group over 60 years had a better consumption frequency of eggplant-dishes. In addition, these fruits have important cultural values during traditional ceremonies at births, weddings, funerals, symbolisms such as acceptance, reconciliation, hospitality, consideration, and valorisation. These populations had knowledge for the prevention and or treatment of diabetes (6.66%), high blood pressure (25%), obesity (13.54%), cancers (1.66%) and mouth ulcers (2.70%). The valorization of these fruits could constitute a means of preserving cultural heritage.