Technical articles

Green Tea

Green tea leaf extract contains a variety of bioactive compounds. Initially isolated and studied for their antioxidant properties, these compounds were later found to also possess anticancer, antiviral, and anti-inflammatory activities.


Catechin

Catechins are the most abundant polyphenolic compounds in green tea, accounting for approximately 70–80% of the total tea polyphenols. They include epicatechin (EC), epicatechin gallate (ECG), epigallocatechin (EGC), and epigallocatechin gallate (EGCG).

Figure 1. Chemical Structure of Epicatechin


Main Functions:

Antioxidant:Scavenges free radicals, slows cellular aging, and helps prevent various diseases.

Anti-inflammatory:Exhibits anti-inflammatory effects, potentially benefiting certain inflammatory conditions.

Antibacterial:Inhibits bacterial growth and may help prevent some bacterial infections.

Lipid- and glucose-lowering:Studies suggest catechins can reduce blood lipids and glucose, contributing to cardiovascular health.

Others:Possess multiple additional bioactivities, including anticancer, antimutagenic, anti-radiation, and anti-aging effects.


Related Products

Name

ID

Grade & Purity

(-)-Epicatechin

E424244

Moligand™, 10mM in DMSO

(-)-Epicatechin

E107318

Moligand™, Analytical Standard, ≥98%(HPLC)

(-)-Epicatechin

E432751

Moligand™, ≥90%(HPLC)

(-)-Epicatechin

E130023

Moligand™, ≥97%(HPLC)

(-)-Epicatechin gallate

E421081

Moligand™, 10mM in DMSO

(-)-Epicatechin gallate

E101659

Moligand™, ≥98%

(-)-Epicatechin gallate

E101658

Moligand™, Analytical Standard, ≥98%

(-)-Epigallocatechin

E100889

Moligand™, Analytical Standard, ≥98%

(-)-Epigallocatechin

E427179

Moligand™, 10mM in DMSO

(-)-Epigallocatechin

E100888

Moligand™, ≥98%(HPLC)

(-)-Epigallocatechin gallate

E107403

Moligand™, Analytical Standard

(-)-Epigallocatechin gallate

E107404

Moligand™, ≥98%

(-)-Epigallocatechin gallate

E409009

Moligand™, 10mM in DMSO


Flavonoids

Flavonoids are an important class of phenolic compounds in plants, including quercetin , myricetin , and L-theanine .

Figure 2. Chemical Structure of Quercetin


Main Functions:

Antioxidant: Similar to catechins, flavonoids scavenge free radicals and protect cells from damage.

Anti-inflammatory: Inhibit inflammatory responses, providing relief for certain inflammatory conditions.

Antitumor: Some flavonoids suppress tumor cell growth and help prevent cancer.

Others: Exhibit antiviral activity, protect the cardiovascular system, and lower cholesterol levels, among other benefits.


Related Products

Name

ID

Grade & Purity

Quercetin

Q1371883

GMP

Quercetin

Q420780

Moligand™, 10mM in DMSO

Quercetin

Q111273

Moligand™, Analytical Standard, ≥98.5%

Quercetin

Q111274

Moligand™, ≥95%

Myricetin

M111175

≥97%

Myricetin

M111176

Analytical Standard, ≥98%

Myricetin

M407976

10mM in DMSO

L-Theanine

L423183

10mM in Water

L-Theanine

T106216

≥98%

L-Theanine

T106217

Moligand™, 10mM in DMSO


Tea Polyphenols

Green tea polyphenols, also known as tea polyphenols, are a collective term for a class of phenolic compounds. They are important bioactive components in green tea, present at relatively high levels, accounting for approximately 15–30% of the dry weight of green tea.

Figure 3. Chemical Structure of Green Tea Polyphenols


Main Functions:

Antioxidant: Scavenge free radicals, reduce oxidative damage, and slow aging.

Anticancer: Components such as EGCG are believed to inhibit cancer cell growth and help prevent cancer.

Lipid-lowering: Reduce cholesterol and triglyceride levels in the blood, contributing to the prevention of cardiovascular diseases.

Antibacterial and anti-inflammatory: Exhibit antibacterial and anti-inflammatory properties, with applications in oral and skin care.


Related Products

Name

ID

Grade & Purity

Tea polyphenols

T418534

Moligand™, TP98%

Tea polyphenols

T426207

10mM in DMSO


References

1. Shimizu M, Adachi S, Masuda M, et al. Mol Nutr Food Res. 2011 Jun;55(6):832-43.

2. Lin YT, Wu YH, Tseng CK, et al. PLoS One. 2013;8(1):e54466.

3. Dong YS, Wang JL, Feng DY, et al. Int J Med Sci. 2014 Jan 28;11(3):282-90.

 

Aladdin: https://www.aladdinsci.com/

Categories: Technical articles

Da — when not otherwise indicated, molecular weight units are daltons.   Mw — weight-average molecular weight.   Mn — number-average molecular weight.

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.

Cite this article

Aladdin Scientific. "Green Tea" Aladdin Knowledge Base, updated Aug 27, 2025. https://www.aladdinsci.com/us_en/faqs/green-tea-en.html
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