Abstract: Aloe gilbertii belonging to the family Aloaceae is used by local people for treatment various disease such as malaria and wound healing. The main purpose of this study was to investigate phytochemicals and antioxidant activity of the Root Extract of Aloe gilbertii Reynolds Phytochemical screening of the CH2Cl2: CH3OH (1:1) extract revealed the presence of flavonoids, anthraquinone, Alkaloids, saponins, phenol and absence of steroids and phytosterols. The anti-oxidant potential and total antioxidant potential was determined by using reducing power determination method and phosphomolybdate method respectively. The antioxidant capacity of methanol, ethanol and ethyl acetate root extracts fractions of Aloe gilbertii were found to be 244.5±0.631, 241.5±0.112 and 106±1.05 mg of ascorbic acid per 10 mg of dry weight of antioxidant in the reducing power, respectively and it’s total antioxidant capacity of these extract fractions were 82.21±0.028, 88.75±0.016 and 74.85±0.043mg of ascorbic acid per 10 mg of dry weight of the crude extract. Thus, the results of the present investigation infer that this plant extracts possess potent antioxidant. Therefore it is strongly recommended to isolate the antioxidant componentsAbstract: Aloe gilbertii belonging to the family Aloaceae is used by local people for treatment various disease such as malaria and wound healing. The main purpose of this study was to investigate phytochemicals and antioxidant activity of the Root Extract of Aloe gilbertii Reynolds Phytochemical screening of the CH2Cl2: CH3OH (1:1) extract revealed the pres...Show More
Abstract: The elemental analysis of rice samples sold in local market in Antananarivo are carried out at Institut National des Sciences et Techniques Nucléaires-Madagascar (INSTN-Madagascar) using Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometer. The study aims to assess the nutritional and mineral elements contents of rice which is the staple dietary food for Malagasy people. The Malagasy rice is divided into three species according to its color: red, pink and white rice. Essential major elements namely sodium (Na), magnesium (Mg), phosphorus (P), chloride (Cl), potassium (K), calcium (Ca) and trace elements such as chromium (Cr), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), selenium (Se) and iodine (I) are quantitatively determined. The accuracy of the instrumental method and analytical procedures are checked by using the Reference Material IPE 135 (Rice sample) from the Wageningen Evaluating Programmes for Analytical Laboratory (WEPAL) in Netherland. The experimental values are in good agreement with the certified values because of a coefficient of determination R² of 0.999 and a recovery rate %R between 87% and 114%. The comparison of the elemental content of the studied rice samples with the Recommended Dietary Allowance (RDA) reveals that Red rice foods have sufficient capacity to provide adult male consumers with P, Mn, Mg, Fe, Cu and Zn. Certainly insufficient daily intake of Mg (55%), Fe (58%), Cu (89%) and Zn (79%) could be met by ingestion of vegetables and meats that are served as a side dish.Abstract: The elemental analysis of rice samples sold in local market in Antananarivo are carried out at Institut National des Sciences et Techniques Nucléaires-Madagascar (INSTN-Madagascar) using Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometer. The study aims to assess the nutritional and mineral elements contents of rice which is the staple dieta...Show More
