Mineral elements analysis and total flavonoids content in the fresh leaves from two varieties of Hibiscus sabdariffa L. consumed as vegetable in Lubumbashi (DR Congo)

Fresh leaves of sorrel (Hibiscus sabdariffa L.) are among the most consumed vegetables in Lubumbashi Democratic Republic Congo (DR Congo). According to literature, this vegetable shows chemical variability depending on culture area. Two varieties species, cultivated and have not yet been studied for their micronutrient content, which fruits main sources. This study investigated mineral total flavonoid content fresh from red green H. L., as a aforementioned city. variety were purchased 10 markets Gravimetric spectrophotometric methods used analyzes water, flavonoids content. Three major elements (Na, Ca, Mg) several trace (Cu, Zn, Fe, Mn, Se, Co, Cr) found both elevated quantity variety. These latter marked by high iron (7 mg/100 g material) Manganese (600 µg/100 material). Total quantification revealed that value (28.2 ± 0.3 mg Quercetin Equivalent per extract) compared Sabdariffa could be source adults manganese children.