Xi'an Kintai Biotech Inc is one of the most experienced manufacturers and suppliers of best green tea extract powder in China. Please feel free to wholesale high quality best green tea extract powder for sale here from our factory. For price consultation, contact us.

Kintaibio's green tea extract is a powdered extract made from the leaves of green tea (Camellia sinensis) through a modern process involving extraction, filtration, concentration, and drying. Its core active ingredients include tea polyphenols, catechins, and epigallocatechin gallate (EGCG), which form the basis for the biological activity of green tea extract.

Green tea (Canellia Sinensis) Plants

Green tea

Green tea drinks

Green tea extract Powder

 

As a supplier deeply engaged in the field of plant extracts, Kintaibio is committed to providing customers with a wide range of high-quality green tea extracts in various specifications for a wide range of applications, including cosmetics, pharmaceuticals, functional foods, and health supplements.

 

Our green tea extracts are available in a variety of standardized specifications to meet the diverse formulation and application needs of downstream customers. Core indicators include total polyphenols, catechins, and EGCG content.

here are our specifciations:

1.Green Tea Extract

Active compound	Assay TCE-98/80/50	TCE-98/75/45	TCE-50/30/15
Total polphenols	≥98.0%	≥98.0%	≥50.0%
Catechins	≥80.0%	≥75.0%	≥30.0%
EGCG	≥50.0%	≥45.0%	≥15.0%
Caffeine	≤0.5%	≤1.0%	≤10.0%

 

2. Natural Theanine

Active compound	Assay
L-Theanine	≥20.0%	30.0%	40.0%	90.0%
Appreance	light yellow to light brown or dark brown powder			white or almost white powder

 

3.Monomer series of green tea extract

Active compound	Assay	Note
L-Theanine	≥98.0%	Synthetic and natural extraction
EGCG	≥98.0%	natural extraction
Epicatechin	≥50.0%;≥98.0%	natural extraction
ECG	≥50.0%;≥98.0%	natural extraction
De-bitterness Tea catechin	≥98.0%	natural extraction
Black Tea Theaflavins	≥20.0%;≥50.0%	natural extraction

Note: The above are common specifications. We support customized production according to your specific needs (such as low caffeine content or specific ratio). If you need samples, please contact sales@kintaibio.com

 

The use of tea was first recorded in the 28th century BC, and it was recorded in the 3rd century BC. There have been records of using tea to treat diseases in China since ancient times, such as《Shen Nong Shi Jing》and《Compendium of Materia Medica》. The tea is approved in Belgium as a traditional diuretic, in France as an oral agent, in Sweden as a food and natural product, and in the United States as a dietary supplement.

Tea is originated in Yunnan, China. Chinese tea region is located in the temperate zone and subtropical zone, from Taiwan at 122°E in the east to Longchuan in Yunnan at 98°E in the west, Hainan Island at 18°N in the south, and Penglai Mountain in Shandong near 38°N in the north. Tea is mainly distributed in Hunan, Zhejiang, Anhui, Sichuan, Yunnan, Hubei, Guangdong, Guizhou, Fujian, Jiangsu, Shaanxi, Henan, Shandong and other places. The world produces about 25 million tons of tea every year. India and China are the largest tea producers in the world. Green tea is the main form of tea, accounting for about 80%.

Tea polyphenols are the extracts of tea, and the components of tea are very complex. 

It includes flavanols (catechins), 4-hydroxyflavanols, flavonoids, anthocyanins and phenolic acids. Flavanols are the main part of polyphenols, accounting for about 80%, including catechin (C), epicatechin (EC), epigallocatechin (EGC), epigallocatechin gallate (EGCG), and a small amount of catechin gallate (CG), gallicatechin (GC), etc. Flavonoids include quercetin, kaempferol, flavonol gallate, etc.

Table1.Retention time, mass spectral data and concentration of phenolic compounds from green tea extract

B

Fiour1.HPLC chromatogram of phenolic compounds in green tea extract. Peak numbers correspond to Table1.

C

Figour2.Mass spectra of Caffeine 195(m/z)(A), Catechingallate 443(m/z)(B), Epigallocatechingalate 459(m/z)(C).

Benefits

★ Antioxidant effect

Tea polyphenols can directly scavenge active oxygen free radicals. The structure of tea polyphenols is rich in phenolic hydroxyl groups, which can provide active hydrogen to inactivate free radicals, and the free radicals formed by oxidation themselves have relatively strong catechol structure. high stability. Therefore, tea polyphenols are hydrogen-donating free radical inhibitors. Tea polyphenols can inhibit lipid peroxidation, chelate metal ions, and activate the intracellular antioxidant defense system.

★Anti-mutation effects

Green tea extract (GTE) has inhibitory effects on animal tumors induced by various carcinogens, including skin, lung, stomach, esophagus, colon, duodenum and other tumors. Its mechanism is very complex, mainly including: inhibiting the proliferation of cancer cells; blocking the generation of carcinogens; anti-oxidation; anti-mutation; anti-cancer; effects on the immune system, etc. Tea polyphenols are effective components for anti-cancer and anti-mutation, especially CG and ECG are the most important active components.

★ Sterilize and antibacterial, improve intestinal microbial structure

Tea catechins have bactericidal and inhibitory effects on many harmful bacteria species such as Staphylococcus aureus, Vibrio cholerae, and Escherichia coli. Tea polyphenols can promote the growth and proliferation of many beneficial bacteria in the human intestinal tract, such as bifidobacteria, and these bacteria can not only produce many nutrients (such as B vitamins) in the intestinal tract, but also inhibit the proliferation of harmful bacteria.

★ Antiviral effect

Tea catechins have inhibitory effects on influenza viruses A and B; EGCG and ECG, even at low concentrations of 0.01-0.02mg/ml, have strong inhibitory effects on HIV. 5. Reduce fat and lose weight, prevent and treat atherosclerosis

Tea catechins, especially EGCG, can inhibit the synthesis of cholesterol in cells, and have the effect of reducing LDL cholesterol and increasing HDL cholesterol in blood. The former has the effect of promoting human atherosclerosis, while the latter has the effect of preventing and improving atherosclerosis.

★ Antihypertensive effect

Tea catechins, especially ECG and EGCG, have obvious inhibitory effect on angiotensin Ⅰ converting enzyme.

★ Dental caries prevention

Research in the late 1980s found that polyphenolic compounds in tea are the most important effective substances in the anti-caries effect of tea.

★ Other functions

Hypoglycemic effect, as well as anti-radiation effect, anti-allergic effect, enhance immune function, prevent aging and so on.

Application

(1) Application in food industry

① Used as antioxidant.

② Used as food preservative.

③ Used as food color retention agent.

④ Used as food deodorant.

(2) Application in daily necessities: It has strong antibacterial effect (including skin bacteria and oral bacteria) and inhibition of oxidase, and can prevent and treat skin diseases, skin allergies, skin pigment removal and wrinkle prevention, dental caries prevention, dental plaque, periodontitis and bad breath.

(3) Application in medicine: Tea polyphenols have obvious preventive and therapeutic effects on the following diseases: lowering blood pressure, anticoagulation, lowering blood fat and obesity, preventing cardiovascular diseases such as arteriosclerosis and thrombosis, lowering blood sugar, preventing and treating diabetes, sterilization and anti-virus.

 

 

9.KINTAI'S PROCESSING

 

10.Why choose Kintai

 

11.Kintai manufacturing base

 

 

12.Kintai R&D center

 

 

13.Preparation

 

▲GTC-30(R) production process

(1) Production process Green tea is extracted with pure water, the extract is cooled, filtered, concentrated under reduced pressure, and spray-dried. This process is suitable for the production of GTC-30(R), and the yield is about 20%.

 

(2) Selection of extraction conditions Test extraction water consumption: 90-95 ° C, extraction time is 20 minutes, 12 times the water extraction rate is 67% (4E), 18 times the water extraction rate is 77%, that is, the increase in water volume increases the extraction rate . Extraction time: under the condition of 90-95°C, the extraction time of 18 times the amount of water is 30 minutes, and the extraction rate decreases (compared to 20 minutes), which may be that catechins are easily oxidized when heated for too long. Extraction times: 18 times the amount of water extracted twice, that is, 12 times of water (20min) and 6 times (15min), the second extraction rate can reach 29%, and the total extraction rate can reach 96%.

 

Considering the unstable factors such as easy oxidation and mutarotation of polyphenols under high temperature conditions, 18 times the amount of water was used for extraction at 90-95°C for 20 minutes at a time. The longer the water extract stays at high temperature, the more likely it is that EGCG will mutate into GCG. The extraction rate of GCG is as high as 350% at 90-95°C for 20 minutes, and about 450% at 30 minutes. In addition, 30% ethanol extraction has the advantages of low temperature, less solvent consumption, and high extraction rate, and the GCG extraction rate is only 95%, which is only 25% to 30% of the same time at 90-95°C.

 

▲ GTC-30(S) production process

The green tea is extracted with pure water, the extract is cooled, filtered, decaffeinated, concentrated under reduced pressure, and spray-dried. This process is suitable for the production of GTC-30(S), and the yield is about 20%.

 

▲ GTC-60(S) production process

(1) Production process Green tea is extracted with pure water, the extract is cooled, filtered, decaffeinated, extracted with ethyl acetate, ethyl acetate is recovered, and spray-dried. This process is suitable for the production of GTC-60(S), and the yield is 5%.

 

(2) Decaffeine test acid-base extraction test: get the green tea water extract, test according to the test method in Figure 2 respectively, concentrate under reduced pressure, vacuum dry under the same conditions, measure 4E (EC, ECG, EGC, EGCG) and c.f. (caffeine) content. Under acidic conditions (pH value 2-3), it is not only conducive to the extraction and transfer of catechins, but also to the separation of two phases. Moreover, extraction under acidic conditions can also reduce the transfer of caffeine to the organic phase and reduce the caffeine content in the product.

 

The comparison of pH adjustment experiments with citric acid, hydrochloric acid, acetic acid, and phosphoric acid shows that after adjusting the pH value to 2-3 with phosphoric acid, it is left for about 15 hours, and the extraction rate of catechin is high, the content of caffeine is low, and the yield is relatively high. 

 

 

14.Package

 

 

 

15.How to buy high qulaity Green tea extract?

 

★If you want to purchase high quality Best Green Tea Extract Powder ,please feel free to contact us at sales@kintaibio.com or feedback in next page.

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