What Is The Difference Between EGCG And Other Antioxidants?

What is EGCG?

Epigallocatechin gallate, abbreviated as EGCG powder, is the most abundant catechin compound in green tea. It belongs to the polyphenols and has strong antioxidant and biological activity.

It is fat-soluble and water-soluble, but has poor stability and is easily affected by pH and temperature. Its sources are divided into natural and chemical sources.

(1). Natural sources:
Green tea (unfermented): The highest content (accounting for 50%~80% of the total catechins), especially matcha and sencha.
It exists in small amounts in white tea and oolong tea (partially oxidized teas have lower content).

(2). Extraction technology:

Separation and purification from green tea by organic solvents (such as ethanol), or preparation by biosynthesis technology.

The difference between EGCG and EC:

Product	Structural differences	Activity intensity	Source
Epigallocatechin gallate (EGCG)	Contains Galloyl	Strongest antioxidant and anti-cancer	Green tea (unfermented)
Epicatechin EC	No Galloyl	Less active	Green tea, cocoa
Epigallocatechin (EGC)	Contains hydroxyl group, no galloyl group	Moderate antioxidant	Green tea, apple
Epicatechin gallate (ECG)	Galloyl	Less effective than EGCG	Green tea, black tea

Key similarities and differences:

Galloyl is the core structure of EGCG's high activity, making its antioxidant capacity far superior to EC and EGC.
Epigallocatechin gallate powder and ECG contain galloyl, which makes them easier to bind to proteins and metal ions, enhancing bioavailability.

eGCG green tea benefits:

1. Antioxidant and anti-aging
Its free radical scavenging ability is 100 times that of vitamin C and 25 times that of vitamin E. It can reduce UV damage and delay skin photoaging.

2. EGCG weight loss
It can inhibit lipase and promote fat oxidation. Clinical studies have shown that daily intake of 300mg EGCG can help lose 1~2kg/month.

3. Anti-inflammatory and immune regulation
It can inhibit the NF-κB pathway, reduce chronic inflammation, and potentially assist in the treatment of autoimmune diseases.

EGCG 1

4. Anti-cancer potential
It can inhibit angiogenesis by inducing apoptosis of cancer cells, but further research is needed. Currently, the research is limited to in vitro and animal models.

5. Neuroprotection
It can reduce the deposition of β-amyloid protein and may reduce the risk of Alzheimer's disease, but more clinical data is needed to support it.

6. Skin care
EGCG extract can be added to essences and masks (concentration 0.1%~1%) for oil control, acne prevention, and brightening skin.

EGCG vs. Other Antioxidants

1. Comparison of antioxidant capacity:

Product	ORAC value (μmol TE/g)	Benefits	Features
EGCG	1,250~1,500	Directly scavenges free radicals and activates the Nrf2 pathway	Anti-inflammatory, anti-cancer
Vitamin C	1,000~1,200	Regenerated Vitamin E	Soluble in water, easily oxidized
Vitamin E	100~130	Block lipid peroxidation	Fat-soluble, protects cell membranes, but has limited effect when used alone
Resveratrol	500~700	Activates SIRT1 and inhibits NF-κB	Low bioavailability (requires nano-encapsulation)
Coenzyme Q10	50~100	Mitochondrial electron transport chain antioxidant	Endogenous supplementation, which decreases with age

Differences:

EGCG has the highest ORAC value and is both water-soluble and fat-soluble, and can act inside and outside cells.
Vitamin C/E must be used in synergy, while EGCG can independently exert a broad-spectrum antioxidant effect.

2. Stability and bioavailability

Product	Light/heat stability	Absorption rate	Ways to improve absorption
EGCG	Poor (pH sensitive)	Oral: <5%	With piperine and lecithin package
Vitamin C	Very bad (easy to oxidize)	Oral: 30%~50%	Use derivatives, liposome encapsulation
Resveratrol	Medium	Oral: <1%	Nanoparticles, combined with quercetin
Natural astaxanthin powder	Strong (high temperature resistance)	Oral: 40%~60%	Lipid carriers (such as fish oil)

Disadvantages of EGCG:

Easily degraded in gastric acid environment, it is recommended to take on an empty stomach or choose enteric-coated capsules.
Skin care products need to be packaged in a dark-light-proof manner (such as dark glass bottles).

3. Comparison of multi-effect applications

(1) Anti-aging

EGCG: inhibits collagenase, reduces wrinkles; activates longevity proteins.
Astaxanthin: strong anti-photoaging, but cannot inhibit inflammatory factors.

(2) Metabolic health

EGCG: regulates blood sugar and lowers blood lipids.
Resveratrol: improves insulin sensitivity, but requires high doses (≥500 mg/day).

(3) Anti-cancer potential

EGCG: induces apoptosis of cancer cells.
Curcumin: targets more signaling pathways, but has a lower absorption rate.

Contact Us:

Fruiterco is an export company that mainly produces plant extracts, health product raw materials, and cosmetic raw materials. The company has a 20+ professional service after-sales team.

Our products are sold to North America, Europe, Australia, South America and Asia. Our products have passed quality inspection and also support customer re-inspection. If you want to buy EGCG extract, you can contact us: Email: info@fruiterco.com.