Abstract:Introduction:A. auriculiformis, A. disparrima and A. leptoloba are native Australian Acacia spp. which were used as both foods and medicines by the first Australians. Infusions and decoctions produced from leaves and bark have reputed antiseptic properties and were used traditionally to treat a variety of bacterial diseases. Despite this, Australian Acacia spp. solvent extractions have not been rigorously examined for antibacterial properties against food spoilage and food poisoning bacteria. Methods: The anti… Show more
“…However, it causes opportunistic infections via urinary tract and wounds, that resulting in septicemia (Daly et al, 2016). A few cases of food poisoning caused by P. mirabilis have been reported in last decade (Cock, 2017). The control time kill curve shows a significant exponential and stationary phase.…”
Aims: Food borne infections are routinely observed and frequently reported. Cymbopogon nardus, or commonly known as citronella is a tropical plant widely used for aromatherapy and insect repellant. This study aimed to evaluate the phytochemical compositions of C. nardus ethanol extract and its antimicrobial activity on food borne microorganisms. Methodology and results: The plant materials were extracted with ethanol using maceration technique. The ethanol extract obtained was analysed using GC-MS and the most abundant compounds were 6-methyloctahydrocoumarin (31.5%) and 2,4-di-tert-butylphenol (28.7%). On Kirby Bauer assay, the extract showed wide spectrum inhibitory effect on one Gram-positive bacteria (Bacillus coagulans), two Gram-negative bacteria (Proteus mirabilis and Escherichia coli), and one yeast (Candida albicans). All the test microorganisms showed different susceptibility to the extract, where the minimal inhibitory concentrations were ranged from 63 to 250 µg/mL. The inhibitory effect of the extract was bactericidal. In addition, the time kill analysis of the extract exhibited inhibitory effect on P. mirabilis which was concentrationdependent. The C. nardus extract exhibited rapid bactericidal effect on P. mirabilis and lower bacterial counts were obtained with increased extract concentration. Besides, the extract did not exert significant toxicity effect to Artemia salina on brine shrimp lethality assay. Conclusion, significance and impact of study: Therefore C. nardus can be a potential source of safe and effective antimicrobial agent to combat food borne infections.
“…However, it causes opportunistic infections via urinary tract and wounds, that resulting in septicemia (Daly et al, 2016). A few cases of food poisoning caused by P. mirabilis have been reported in last decade (Cock, 2017). The control time kill curve shows a significant exponential and stationary phase.…”
Aims: Food borne infections are routinely observed and frequently reported. Cymbopogon nardus, or commonly known as citronella is a tropical plant widely used for aromatherapy and insect repellant. This study aimed to evaluate the phytochemical compositions of C. nardus ethanol extract and its antimicrobial activity on food borne microorganisms. Methodology and results: The plant materials were extracted with ethanol using maceration technique. The ethanol extract obtained was analysed using GC-MS and the most abundant compounds were 6-methyloctahydrocoumarin (31.5%) and 2,4-di-tert-butylphenol (28.7%). On Kirby Bauer assay, the extract showed wide spectrum inhibitory effect on one Gram-positive bacteria (Bacillus coagulans), two Gram-negative bacteria (Proteus mirabilis and Escherichia coli), and one yeast (Candida albicans). All the test microorganisms showed different susceptibility to the extract, where the minimal inhibitory concentrations were ranged from 63 to 250 µg/mL. The inhibitory effect of the extract was bactericidal. In addition, the time kill analysis of the extract exhibited inhibitory effect on P. mirabilis which was concentrationdependent. The C. nardus extract exhibited rapid bactericidal effect on P. mirabilis and lower bacterial counts were obtained with increased extract concentration. Besides, the extract did not exert significant toxicity effect to Artemia salina on brine shrimp lethality assay. Conclusion, significance and impact of study: Therefore C. nardus can be a potential source of safe and effective antimicrobial agent to combat food borne infections.
“…The Australian species had multiple medicinal uses by indigenous Australians, including use to treat diarrhoea and hyperglycemia4 and as a general antiseptic agent. [5][6][7] Many Acacia spp. have also been reported to have amtimicrobial, molluskicidal, antihypertensive and platelet aggregatory activities.…”
Section: Medicinal Plant Imagesmentioning
confidence: 99%
“…inhibit the growth of food spoilage bacteria and therefore are useful as natural preservatives. 7,12 This photograph was taken in Toohey Forrest, Queensland, Australia by Dr. Ian Cock in 2016.…”
“…Acacia has been planted in more than eighty countries around the world and becomes prominent in tropical and subtropical regions of Asia, Africa, Central, and South America (Old et al 2002). Extract of three species from Acacia leaf has po-tential in the development of natural food preservatives (Cock 2017). The heartwood of A. confusa possesses excellent decay resistance properties (Chen et al 2013).…”
Chemical compounds of wood preservation from plants vary and are not known specific to the species. Chemical analysis of plants is responsible to ensure active compound in natural extracts wood treatment. There are many sources of natural extracts found in Indonesia that were explored for wood preservatives chemicals. They are bark of acacia and alstonia, leaves of orthosiphon and azardirachta and Dioscorea tubers. The present study was aimed at investigating the variation of the chemical constituent of natural extracts material of wood preservative through GC-MS analysis. Five natural extract sources were acacia bark (Acacia spp.), pulai bark (Alstonia scholaris), kumis kucing leaves (Orthosiphon spp.), mimba leaves (Azardirachta indica), and gadung tubers (Dioscorea spp.). Two non-polar solvents, i.e., n-hexane and petroleum ether were used for five natural source extractions following ASTM soxhlet extraction. The research showed that triterpene and fatty acid derivatives were the major compounds present in five natural extracts.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.