Green tea extract is a natural plant ingredient extracted from green tea leaves, mainly rich in tea polyphenols, caffeine, amino acids, vitamins and minerals. Due to its powerful antioxidant, anti-inflammatory, anti-cancer, lipid-lowering, blood sugar-lowering, weight loss and anti-aging benefits, green tea extract has been widely used in health foods, cosmetics, beverages and medicines.

Main ingredients

Tea polyphenols: One of the active ingredients in green tea, especially epigallocatechin gallate (EGCG) is its most important antioxidant ingredient. Tea polyphenols have a strong antioxidant effect, which can neutralize free radicals and slow down the aging process.

Caffeine: It has the effects of refreshing the mind, improving alertness and promoting fat burning.

Amino acids: Green tea contains a variety of amino acids, such as L-theanine, which can help relax and relieve stress.

Vitamins and minerals:
Green tea is rich in vitamins C, E, K, etc., as well as minerals such as potassium, calcium, and magnesium, which can help improve immunity and maintain physical health.

Benefits of Green Tea Extract

Green tea extract is rich in various bioactive compounds, particularly polyphenols (especially epigallocatechin gallate or EGCG), caffeine, and amino acids (such as L-theanine), which provide a wide range of health benefits. Below are the main benefits of green tea extract:

1. Antioxidant Properties

Green tea extract contains powerful antioxidants, especially EGCG, which can effectively neutralize free radicals and reduce oxidative stress, thereby slowing down cellular aging and degeneration. The antioxidant effect helps lower the risk of chronic diseases, such as cancer, cardiovascular diseases, and neurodegenerative diseases.

2. Promotes Fat Burning and Weight Loss

Green tea extract helps increase metabolic rate, enhance fat oxidation, and burn more calories, especially during exercise. Studies show that green tea extract promotes the burning of fat, particularly abdominal fat, making it widely used in weight loss and body management products.

3. Improves Cardiovascular Health

Green tea extract helps lower total cholesterol, particularly low-density lipoprotein (LDL) cholesterol, and prevents arterial plaque buildup. Its antioxidant and anti-inflammatory properties also improve vascular health, reducing the risk of cardiovascular diseases like heart disease, hypertension, and stroke.

4. Anti-inflammatory Effects

Green tea extract contains polyphenols that have significant anti-inflammatory effects, helping to alleviate chronic inflammation in the body. This is particularly important for conditions like arthritis and autoimmune diseases that are driven by inflammation.

5. Reduces Blood Sugar and Improves Insulin Sensitivity

Studies show that green tea extract can help improve insulin sensitivity and lower blood sugar levels, offering preventive and supportive treatment for diabetes (especially type 2 diabetes).

6. Anti-cancer Effects

The polyphenols in green tea extract, including EGCG, have demonstrated potential anti-cancer properties. They inhibit the growth of cancer cells, promote cancer cell apoptosis (natural cell death), and prevent tumor spread. While further research is needed to confirm these benefits, green tea extract is considered a promising natural anticancer substance.

7. Boosts Immune System

The antioxidants in green tea extract can enhance the body’s immune response, helping to fight off infections. Its antibacterial and antiviral properties protect the body from harmful bacteria and viruses, supporting the overall function of the immune system.

8. Improves Brain Health and Cognitive Function

Green tea extract’s L-theanine promotes relaxation and reduces stress. When combined with caffeine, it enhances alertness, focus, and cognitive function, and can also improve memory. It may lower the risk of neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease.

9. Skin Health and Anti-aging

Green tea extract has powerful antioxidant and anti-inflammatory properties, which help protect the skin from damage caused by UV rays, pollution, and environmental stress. It also promotes skin cell regeneration and repair, reduces fine lines and wrinkles, and slows down the aging process. Green tea extract is commonly used in anti-aging and skincare products to improve skin texture and maintain a radiant complexion.

10. Oral Health

Green tea extract has antibacterial properties that help reduce harmful bacteria in the mouth, preventing gum disease, bad breath, cavities, and other oral health issues. Its antioxidant components also protect teeth from damage caused by free radicals.

11. Reduces Stress and Promotes Relaxation

The L-theanine in green tea extract helps relieve mental stress and anxiety, promoting relaxation. When combined with caffeine, it enhances alertness while preventing the jittery feelings or insomnia that often occur with caffeine alone.

Green tea extract, with its rich antioxidant, anti-inflammatory, metabolism-boosting, cardiovascular-protective, and anti-cancer benefits, is widely used in health supplements, functional beverages, cosmetics, and pharmaceuticals. It is a natural, multifunctional health ingredient that helps maintain overall well-being, promotes anti-aging, boosts immunity, and aids in weight loss, making it an essential part of modern healthy lifestyles.

How to preserve green tea extract?

To preserve green tea extract effectively, it’s important to focus on factors that maintain its potency, prevent oxidation, and ensure its longevity. Here are key strategies:

1. Store in a Cool, Dry Place: Exposure to heat and humidity can degrade the quality of green tea extract. Store it in a cool (around 15-25°C or 59-77°F), dry place, away from direct sunlight and heat sources.

2. Use Airtight Containers: Oxygen can lead to oxidation and degradation of active compounds in green tea extract. Keep the extract in airtight containers, such as glass jars or vacuum-sealed bags, to minimize exposure to air.

3. Avoid Light Exposure: Ultraviolet (UV) light can degrade the beneficial polyphenols (like EGCG) in green tea extract. Use opaque or dark-colored containers to protect the extract from light.

4. Refrigeration or Freezing: For longer-term preservation, refrigerate or even freeze green tea extract. If freezing, use a suitable container that prevents moisture or frost from affecting the extract.

5. Add Antioxidants (Optional): Some manufacturers may add natural antioxidants like Vitamin C or Vitamin E to help prevent oxidation. This is especially helpful if the extract is in liquid form.

6. Monitor Expiry Date: Green tea extract has a shelf life, so be sure to check the expiration date provided by the supplier and rotate stock if needed.

7. Use in Appropriate Packaging: If you’re producing green tea extract for commercial sale, consider using nitrogen-flushed packaging to further minimize oxidation.

By following these guidelines, you can ensure the green tea extract maintains its quality, potency, and flavor for as long as possible.