Antimicrobial Activity of some Important Edible Leaf Extracts

Sivasankar, T.; Rajan, S; Maina, C. C.; Suvarna, V. C.

doi:10.5567/imicro-ik.2013.15.18

Cited by 7 publications

(6 citation statements)

References 2 publications

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“…S. aureus on the other hand was resistant to n-hexane and water extracted fractions showing no ZI. Our results are in agreement with Sivasankaridevi et al (2013).…”

Section: Discussionsupporting

confidence: 83%

“…The data also suggested that butanol was more effective against C. freundii at all concentrations used However, C. freundii was completely resistant to crude methanolic extract, nhexane, ethyl acetate and water extracted fractions. Similar results were shown by Chaithradhyunthi et al (2009), Dimayuga andGarcia (1991), Rauf et al (2012), and Sivasankaridevi et al (2013).…”

Section: Discussionsupporting

confidence: 80%

See 1 more Smart Citation

Antimicrobial and anti-oxidant potential of Periploca hydaspidis

Ullah

Bakht

Shafi

2015

Bangladesh J Pharmacol

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The present study investigates antimicrobial and anti-oxidant potential of different solvent extracted samples from Periploca hydaspidis through disc diffusion assay. The data revealed that all the extracts reduced the growth of the tested microbes using three different concentrations. Pseudomonas aeruginosa and E. coli were sensitive to crude extracts and all fractions measuring varying degree of growth inhibition. Similarly, the growth of Citrobacter freundii was not inhibited by crude methanolic extracts, n-hexane, ethyl acetate and aqueous extracted samples. Maximum growth inhibition was measured against Klebsiella pneumoniae exposed to aqueous fraction followed by n-hexane fraction. Our results also suggested that among various fungi, Candida albicans was sensitive to crude methanolic extracts, n-hexane and aqueous fractions compared with other fractions. The rest of the fungi under test were resistant to crude and all fractions showing no zone of inhibition. All the extracted samples of the stems and roots showed antioxidant activity, however, crude methanolic extract of stem tissues exhibited better antioxidant activity than the other extracts.

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“…S. aureus on the other hand was resistant to n-hexane and water extracted fractions showing no ZI. Our results are in agreement with Sivasankaridevi et al (2013).…”

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 80%

Antimicrobial and anti-oxidant potential of Periploca hydaspidis

Ullah

Bakht

Shafi

2015

Bangladesh J Pharmacol

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“…The considerable yield of the ethanol extract implies that ethanol is a good organic solvent which can help with the release of active phytochemicals adequately (Hwang and Thi, 2004). The production of acetone extracts was quite substantial due to polar and non-polarity status of the solvent which encourages absorption of polar compounds and nonpolar compounds and this assertion uphold earlier reports of Ell of (1998); Sheela et al (2012); Sivasankaridevi et al (2013); Dzoyem et al (2014).…”

Section: Discussionsupporting

confidence: 68%

Chemical Composition, Toxicity and Antifungal Activities of Megaphrynium macrostachyum (K. Schum) Leaf Extract against Foodborne Fungi

Adeogun¹,

Adekunle²,

Adongbede³

et al. 2017

Not Sci Biol

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This study aimed to examine the preservative potential of Megaphrynium macrostachyum on fungi responsible for the deterioration of orange juice and corn Jell-O. The phytochemicals from plants' leaves were extracted with four solvents: acetone, aqueous, ethanol and hexane. The solvents were differently and tested against fungi isolated from orange juice and corn Jell-O using disc diffusion method. Phytochemical screening of the extracts from the leaves was carried out, and the most active extract was tested via GC-MS for the essential oils and HPLC fingerprinting. The toxicity test of the extracts against brine shrimp was carried out after exposure for 24 hours. The toxicity test showed that the extracts were non-toxic on the Brine Shrimps at LC 50 (379.21μg/ml and 107.21μg/ml for aqueous and ethanol extracts). The qualitative phytochemical test reported the presence of alkaloids, tannins, saponins, flavonoids, steroids and terpenoids in different extracts of the plant' leaves. The quantitative phytochemical determination of the most active extract revealed alkaloids with the highest contents of 107.48 mg/100 g. The GC-MS analyses of the fresh leaves of the plants revealed the presence of isodecane with the highest percentage at 15.56%. The GC-MS analyses of the dried leaves revealed isodecane with the highest percentage at 10.43%. The HPLC analysis revealed the presence of various phytochemical constituents in the dried leaves. This study has been able to establish the potency of Megaphrynium macrostachyum leaves on fungi associated with the spoilage of Citrus sinensis (orange) juice and Corn Jell-O ('Eko') which contribute to tremendous research towards the use and acknowledgment of natural antimicrobials for the preservation of food.

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“…The results showed that extracts from the two plant materials also inhibited those bacteria. Effects of betel and turmeric found on E. coli bacteria are in accordance with the previous studies [21,22] and thus further confirming their therapeutic potentials for infections. Even researchers have investigated the effects of betel and turmeric on a number of bacteria [21,22], this study represented the first attempt to examine these two plants on S. suis strains.…”

Section: Discussionsupporting

confidence: 91%

“…Effects of betel and turmeric found on E. coli bacteria are in accordance with the previous studies [21,22] and thus further confirming their therapeutic potentials for infections. Even researchers have investigated the effects of betel and turmeric on a number of bacteria [21,22], this study represented the first attempt to examine these two plants on S. suis strains. For the first time, inhibitory effects of betel and turmeric on S. suis bacteria have been demonstrated, and therefore suggesting Nguyen and Nguyen that they have therapeutic potentials for S. suis diseases.…”

Section: Discussionsupporting

confidence: 91%

Study on Antibacterial Effects of Several Vietnamese Medicine Plants and Their Relationships With Polyphenol Contents

Nguyen

2019

Asian J Pharm Clin Res

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Objective: Our study evaluated the inhibitory effects of 13 plant materials on bacterial growth, so as to explain their traditional uses in bacterial infections. In addition, the correlation between antibacterial effects of plants and the polyphenol contents or antioxidant activities was also verified to investigate if these properties were responsible for the plant antibacterial effects. Methods: We tested extracts with 20 bacterial strains purchased from Japan Veterinary Products Association (JVPA, Tokyo, Japan) and also the Escherichia coli (E. coli) and Streptococcus suis (S. suis) strains that we had previously isolated from livestock. After polyphenol contents and antioxidant activities were measured, we examined their correlations with antibacterial effects. Results: The results showed that all extracts exerted inhibitory effects on tested bacteria and at different levels. Among all of samples, betel and mother rhizome of turmeric showed the strongest effects and also exerted inhibition on antibiotic-resistant E. coli and S. suis bacteria. In addition, direct and significant correlations between antibacterial effects’ and polyphenol content’s values were established and thus demonstrating that antibacterial effects of plants were attributable, at least in part, to the presence of polyphenol compounds. Conclusions: Our study demonstrated the antibacterial effects of 13 plant materials and, therefore, partly gives pharmacological basis to explain their traditional uses in diseases associated with bacterial infections. In addition, as betel and mother rhizome of turmeric showed the highest effects, we suggested that they might serve as the most promissory candidates for bacterial treatment. However, follow-up researches are still required to assess their potentials.

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Antimicrobial Activity of some Important Edible Leaf Extracts

Cited by 7 publications

References 2 publications

Antimicrobial and anti-oxidant potential of <i>Periploca hydaspidis</i>

Antimicrobial and anti-oxidant potential of <i>Periploca hydaspidis</i>

Chemical Composition, Toxicity and Antifungal Activities of Megaphrynium macrostachyum (K. Schum) Leaf Extract against Foodborne Fungi

Study on Antibacterial Effects of Several Vietnamese Medicine Plants and Their Relationships With Polyphenol Contents

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