Antimicrobial properties of tea (Camellia sinensis L.)

Hamilton‐Miller, J. M. T.

doi:10.1128/aac.39.11.2375

Cited by 317 publications

(189 citation statements)

References 40 publications

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“…Green tea contains more catechins (simple flavonoids) but during black tea processing, leaf oxidation converts these simple flavonoids to more complex theaflavins and thearubigins (Cabrera et al, 2006). These catechins, theaflavins and thearubigins are the antimicrobial agents present in tea (Hamilton-Miller, 1995;Luczaj and Skrzydlewska, 2005).…”

Section: Discussionmentioning

confidence: 99%

In-vitro antimicrobial and synergistic properties of water soluble green and black tea extracts

Mbuthia¹,

Wachira²,

Koech³

2014

Afr. J. Microbiol. Res.

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Green and black teas extracts are known for their antibacterial activity against many pathogenic microorganisms. These studies have been necessitated by the need to combat the recent rise of drugresistant human pathogens which is becoming a common occurrence in the world making easily manageable infections to become life threatening illnesses. This study evaluated the antimicrobial activity of water soluble green and black tea extracts from a high quality Kenyan tea clone TRFK 6/8 against antibiotic resistant Escherichia coli ATCC 25922 and Staphylococcus aureusATCC 25923 using agar well diffusion method. Green and black tea extracts effectively inhibited the growth of both E. coli ATCC 25922 and S. aureus ATCC 25923 at concentrations of 0.1 and 0.05 mg/ml, respectively after 24 h. Green tea extracts and gentamicin showed greater zone of inhibition compared to penicillin G. In addition, the possible synergistic activity of water soluble green tea extract and antibiotics was also determined using agar well diffusion method. A combination of penicillin G and green tea extract inhibited the growth of E. coli ATCC 25922 and S. aureus ATCC 25923 compared to penicillin G alone while gentamicin exhibited an additive and antagonistic effect depending on tested bacteria. Green and black tea extracts can be used as an antimicrobial agent and also green tea extract can be used in combination with penicillin G to manage resistant pathogenic bacteria. Furthermore, tea which is a proven safe, cheap and readily available compound can be used in more ambitious trials to test the antimicrobial efficacy and chemo-preventive effects in animal and human models.

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Section: Discussionmentioning

confidence: 99%

In-vitro antimicrobial and synergistic properties of water soluble green and black tea extracts

Mbuthia¹,

Wachira²,

Koech³

2014

Afr. J. Microbiol. Res.

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“…Catechins, the polyphenolic constituents of green tea, have previously been examined for their antimicrobial activities (Hamilton-Miller, 1995;Sakanaka et al, 1989;Toda and Shimamura, 1996). In our experiments, we compared the antibacterial effects of peppermint oil and 15 of its constituents with the effects of green-tea polyphenols on E. coli …”

Section: Discussionmentioning

confidence: 99%

The Antibacterial Activities of Peppermint Oil and Green Tea Polyphenols, Alone and in Combination, against Enterohemorrhagic Escherichia coli.

et al. 1999

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“…In general, antibacterial activity decreases when the extent of tea fermentation is increased, implying stronger activity in green tea than black tea [44], [45].Green tea catechins, particularly EGCG and ECG, have antibacterial activity against both Gram-positive and Gram-negative bacteria [46]- [48]. Broadly, Gram-positive bacteria are more sensitive to tea extracts than Gramnegative bacteria [47].…”

Section: International Journal Of Advanced Engineering Research and Smentioning

confidence: 99%

Health benefits of Green and Black Tea: A Review

Kodagoda¹,

Wickramasinghe²

2017

IJAERS

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Antimicrobial properties of tea (Camellia sinensis L.)

Cited by 317 publications

References 40 publications

In-vitro antimicrobial and synergistic properties of water soluble green and black tea extracts

In-vitro antimicrobial and synergistic properties of water soluble green and black tea extracts

The Antibacterial Activities of Peppermint Oil and Green Tea Polyphenols, Alone and in Combination, against Enterohemorrhagic Escherichia coli.

Health benefits of Green and Black Tea: A Review

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