Physicochemical Properties and Biological Activities of Garlic (Allium sativum L.) Bulb and Leek (Allium ampeloprasum L. var. Porrum) Leaf Oil Extracts

Abstract

Allium species including garlic and leek exhibits a broad range of medicinal and nutritional properties. Therefore, this study investigates the physicochemical and biological activities of garlic (Allium sativum L.) and leek (A. ampeloprasum L. var. Porrum) oil extracts. The result indicated that physicochemical properties indicated that significantly higher oil yield (21.25%), ACV (2.66 mg/g), FFA (1.34%), and PV (4.10 meq/kg) and also antioxidant activities with respect to 2, 2-diphenyl-1-picrylhydrazyl, DPPH (27.60 ± 1.55%), hydrogen peroxide (12.35 ± 0.92%) free radical scavenging activities, and ascorbic acid content (25.30 ± 3.25%) were obtained for leek leaf oil extract. Stronger antibacterial activity with a maximum zone of inhibition (16.00 mm), minimum inhibitory concentration (MIC) (0.20 µg/ml), and minimum bactericidal concentration (MBC) (0.40 µg/ml) was recorded for leek oil extract against S. pyogenes. However, garlic oil has presented stronger antifungal activity with a maximum zone of inhibition (13.50 mm), MIC (0.40 µg/ml), and minimum fungicidal concentration (MFC) (0.75 µg/ml) against Candida albicans. It is concluded from the results of this investigation that oils extracts of garlic bulb and leek leaves demonstrated significant biological activities that can be used as sources for pharmaceutical and nutraceutical ingredients.

Silver nanoparticle biosynthesis utilizing Ocimum kilimandscharicum leaf extract and assessment of its antibacterial activity against certain chosen bacteria

“…and Mkangara et al . [ 29 , 30 ] with some modifications, extracts of O. kilimandscharicum and silver nanoparticles were assessed to determine their bactericidal concentrations. A sterile swab was used to transfer the contents from wells (3 wells downstream) where no color changes had occurred to fresh sterile Petri plates for further incubation.…”

Silver nanoparticle biosynthesis utilizingOcimum kilimandscharicumleaf extract and assessment of its antibacterial activity against certain chosen bacteria

“…The least inhibitory concentration is the lowest concentration at which colony growth is inhibited. Extracts of O. kilimandscharicum and silver nanoparticles mediated were tested to find their bactericidal concentrations using the approach given by Lemma et al and Mkangara et al [28,29] with some modifications. Using a sterile swap, the well contents (3 wells downstream) in which no colour changes had occurred were moved to fresh sterile Petri plates and infected.…”

Effect of garlic genotypes (Allium sativum L.) on phenotype, growth, yield-related attributes, and nutritional quality at Bule Hora agro-ecology

“…The nutritional characteristics of the different genotypes of commonly taken foods lead to the maintenance of food diversity and improve nutritional quality, particularly in mal-nutrition populations [ 7 ]. Consequently, garlic heals communicable diseases effectively [ 8 ]. Particularly, it has anti-bacterial [ 9 , 10 ], anti-cancer, anti -inflammantory, antihypercholestrolemic [ 10 ], anti-viral [ 10 ], and antioxidant [ 5 ], antifungal [ 11 ] activity than other Allium species due to its vinyldithiin [ 11 ], allicin [ 5 ], diallyl polysulfide [ 9 ], and ajoene [ 11 ].…”