Phytochemical Screening and Antibacterial Activity of Methanolic Extracts of Ripe and Unripe Peels of Mango (Mangifera indica L.)

Abstract

Aims: To evaluate the phytochemical constituents and antibacterial activity of methanolic extracts of ripe and unripe peels of mango (Mangifera indica L.) against pathogenic bacterial strains. Methodology: Both ripe and unripe mango peels were collected separately, air-dried and powdered. Crude methanolic extracts of ripe and unripe mango peels were analyzed for the phytochemical constituents. Different concentrations (100, 200 and 400 mg/ml) of methanolic extracts of the mango peels were prepared using 30% Dimethyl sulfoxide (DMSO). Antibacterial activity was evaluated by agar well diffusion method using seven bacterial species: three reference strains-Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922) and Enterococcus faecalis (ATCC 29212); and four food-borne pathogens-Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Bacillus cereus. Results: Phytochemical analysis revealed the presence of tannins, saponins, flavonoids, terpenoids, alkaloids and phenolic compounds in both ripe and unripe mango peels extracts while Original Research Article

Extraction and Antibacterial Studies of Oil from three Mango Kernel obtained from Makurdi - Nigeria

“…Infectious diseases are causing death worldwide partly because of multidrug resistant strains of bacteria and increase in untreatable bacterial infections [1,2]. This situation has necessitated a search for new antibacterial compounds hence, researchers and pharmaceutical industries are increasingly turning their attention to herbal products in order to develop better drugs against pathogenic microbial strains [2,3]. Fortunately, most plants produce a large number of secondary metabolites with antimicrobial effects on pathogens, individually or in combination [4][5][6].…”

“…In addition, medicinal plants have various effects on living systems, thus they are used as; sedatives, analgesic, antipyretics, cardio-protective, anti-inflammatory, antioxidants, antispasmodics, immunomodulatory [7], antioxidant [4], and immunomodulatory [7,8]. Importantly these plants' chemical diversity is thought to protect plants against microbial pathogens [3]. Of course waste or by-products of plants also contain these vital metabolites.…”

“…In addition, one of the agro-wastes, currently causing pollution problems and also underutilized is the peels and kernels of the mango fruit [3]. First and foremost, mango (Mangifera indica L.) is a member of the family Anacardiaceae.…”

“…First and foremost, mango (Mangifera indica L.) is a member of the family Anacardiaceae. Mango is one of the most important and abundant tropical fruits in Nigeria with a global production exceeding 35 million tons [3,4]. Mango fruits are processed in various products as puree, canned slices, syrup, nectar, leather, pickles, chutney and jam [9], with concurrent generation of significant amount of wastes.…”

“…Mango fruits are processed in various products as puree, canned slices, syrup, nectar, leather, pickles, chutney and jam [9], with concurrent generation of significant amount of wastes. In general, there is an abundant supply of mango by-products such as seed kernels and peels which are considered as wastes from mango fruit utilization [2,3,9]. Furthermore, it is found that 40 to 60% waste is generated during processing of mangoes; which consists of 12 to 15% peels and 15 to 20% of kernels.…”