Antibacterial potential of catechin of tea (Camellia sinensis) and its applications

Abstract

By reviewing various works of research by many experts on tea, this mini review elaborates the picture of catechins in tea, especially green tea, and their applications as potential antimicrobial agents. Tea originated in China as a drink with medicinal purposes and to be grew a worldwide beverage. Green tea undergoes minimum oxidation process compared to black tea, thus it may contain the same pharmacological bioactive components, but in different concentrations, except for theaflavins and thearubigens that are mainly found in black tea. Phytochemical screening of green tea leaves revealed various polyphenols, mainly catechins, which play multiple essential roles in plant physiology and have potential health properties and benefits on human health, such as antioxidants, as well as anti-allergic, anti-inflammatory, anticancer, antihypertensive, and as antimicrobial agents. Green tea polyphenolic EGCG has the capability to cross-link with many proteins which grants it a wide range of antimicrobial activities possibly by damaging microbial cytoplasmic lipids and proteins. The high concentrations of catechins in tea (Camellia sinensis) were reported to have antimicrobial activities against many pathogens including Listeria monocytogenes, a gram-positive bacterium known to be isolated from red meat, therefore making tea catechin an effective antimicrobial agent. In a study model applying up to 1000 ppm tea catechin extract to a biodegradable film, it proved beneficial for home-use wraps for meat, poultry, and seafood, thus expressing the strong potential of tea catechin as an organic antimicrobial agent.

Potential Inhibitor of COVID-19 Main Protease (M^pro) From Several Medicinal Plant Compounds by Molecular Docking Study

“…Kaempferol Spinach Spinacia oleracea [26] Cabbage Brassica oleracea [26] Dill Anethum graveolens [26] Chinese cabbage Brassica rapa [26] Katuk Sauropus androgynus [27] Quercetin Dill Anethum graveolens [26] Fennel leaves Foeniculum vulgare [26] Onion Allium cepa [26] Oregano Oregano vulgare [26] Chili pepper Capsicum annum [26] Luteolin-7-glucoside Olive Olea Europaea L [28][29][30] Star fruit Averrhoa belimbi [31] Chili pepper Capsicum annum [31] Welsh onion / Demethoxycurcumine Turmeric Curcuma longa [32,33] Curcuma Curcuma xanthorriza [32,33] Naringenin Citrus fruit Citrus sinensis [34] Apigenine-7-glucoside Star fruit Averrhoa belimbi [31] Goji berries Lycium chinense [31] Celery Apium graveolens [31] Olive Olea Europaea L [28,29] Oleuropein Olive Olea Europaea L [28][29][30] Catechin Green tea Camellia sinesis [35][36][37] Curcumin Turmeric Curcuma longa [38][39][40][41] Curcuma Curcuma xanthorriza [32], [33] Epicatechin gallate Green tea Camellia sinesis [35][36][37] Zingerol Ginger Zingiber officiale [42]…”

Flavonoids-Rich Plant Extracts Against Helicobacter pylori Infection as Prevention to Gastric Cancer

“…Catechins, such as catechin and epicatechin, are flavonoids in plants, fruits (e.g., apple, strawberry, kiwi), black and green tea, red wine, beer, chocolate, and cocoa, among others ( Grzesik et al, 2018 ). For example, green tea has a high catechin concentration ( Botten et al, 2015 ), about 1 g/ml in a teacup ( Rahardiyan, 2019 ). Approximately 5–7% of this concentration is epicatechin ( Braicu et al, 2013 ).…”

Potential of Prospective Medicinal Plants of Bangladesh for the Complementary Management of COVID-19

“…Tea (Camellia sinensis L. Kuntze, Family: Theaceae): Tea ('Cha' in Bengali language) can provide very proficient immunomodulatory and anti-inflammatory effect on lungs, precisely due to the presence of catechin (Rahardiyan, 2019).…”