Green Tea Extract

[likwid696]

is there any caffeine in these? If so, how much?

 

[macrophage69alpha]

is there any caffeine in these? If so, how much?

depends on the product

Levorex for instance has less than 1mg caffeine per cap

Green tea extract 240ct 500mg per cap/ 225mg EGCG per cap

has about 45mg caffeine per cap (9%)

 

[RamRom]

is this any good?

http://organic-health.com/Merchant2...P&Product_Code=620365018658&Category_Code=GRT

 

[macrophage69alpha]

its got good polyphenol content (95%), but its only 300mg/cap and only 60caps. EGCG which is the most important polphenol is unlisted (at that % its likely anywhere from 25-45% egcg).

Scott finest (link above) is a lot better deal (at least 7 times the egcg- if its at the high end- more if its not) for about 2.5 times the price.

 

[NorgePrecision]

I just picked up some green tea from wal-mart called "Bigelow" and it tastes alright. It definitely elevates the mood. The problem is it doesn't print the caffeine content, so that worries me a little. Does anyone have experience with this brand? I'll probably head to the organic food store next time I buy it. BTW, I think I'm addicted already.

 

[Singleton]

The theanine and catechins, are synergistic with the caffeine to promote weight loss. (1).

All 3 ingredients occur naturally in green tea.

Oh, yeah, and it's a great anti-oxidant.

The BAC powder makes a great base for skin mask, and you can also add their powdered carnitine and DMAE. Good for your skin.

Watch out for chinese green tea. Often high in pesticides, from what I've read. Get certified organic. Japanese have the best green teas for drinking and cooking.

(1) Anti-obesity effects of three major components of green tea, catechins, caffeine and theanine, in mice.

Zheng G, Sayama K, Okubo T, Juneja LR, Oguni I.

Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, 836 Ohya, Shizuoka-shi 422-8529, Japan.

To elucidate the anti-obesity effects of three major components of green tea, catechins, caffeine and theanine, female ICR mice were fed on diets containing 2% green tea powder and diets containing 0.3% catechins, 0.05% caffeine and 0.03% theanine, which correspond, respectively, to their concentrations in a 2% green tea powder diet, singly and in combination for 16 weeks. Body weight and food intake were determined monthly during this period, kidneys, adrenals, liver, spleen, brain, pituitary and intraperitoneal adipose tissues (IPAT) were weighed and lipid levels in the serum and liver were measured at the end of this period. The body weight increase and weight of IPAT were significantly reduced by the diets containing green tea, caffeine, theanine, caffeine + catechins, caffeine + theanine and caffeine + catechins + theanine. Noticeably, the IPAT weight decreased by 76.8% in the caffeine + catechins compared to the control group. Serum concentrations of triglycerides (TG) and non-esterified fatty acids (NEFA) were decreased by green tea, catechins and theanine. Moreover, caffeine + catechins, caffeine + theanine and caffeine + catechins + theanine also decreased NEFA in the serum. The TG level in the liver was significantly reduced by catechins and catechins + theanine in comparison with the control. These results indicated that at least caffeine and theanine were responsible for the suppressive effect of green tea powder (GTP) on body weight increase and fat accumulation. Moreover, it was shown that catechins and caffeine were synergistic in anti-obesity activities.

 

[macrophage69alpha]

(1) Anti-obesity effects of three major components of green tea, catechins, caffeine and theanine, in mice/

 

[Big'r]

Effects of EGCG + caffeine in humans are inconsistent:

Effects of encapsulated green tea and Guarana extracts containing a mixture of epigallocatechin-3-gallate and caffeine on 24 h energy expenditure and fat oxidation in men.
A mixture of green tea (90, 200, 300 or 400 mg) and guarana extracts (200 mg caffeine) 3 x/day 30 min. before meal increases 24 h energy expenditure by 750 kJ with all EGCG-caffeine mixtures compared with placebo.. No effect of the EGCG-caffeine mixture was observed for lipid oxidation. Systolic and diastolic blood pressure increased by about 7 and 5 mmHg (E528).

Efficacy of a green tea extract rich in catechin polyphenols and caffeine in increasing 24-h energy expenditure and fat oxidation in humans.
90 mg EGCG + 50 mg caffeine at breakfast, lunch and dinner for 10 healthy men resulted in a significant increase in 24-h energy expenditure (EE) (4%; P < 0.01) and a significant decrease in 24-h respiratory quotient (RQ) (from 0.88 to 0.85; P < 0.001) without any change in urinary nitrogen. Twenty-four-hour urinary norepinephrine excretion was higher during treatment with the green tea extract than with the placebo (40%, P < 0.05). Treatment with caffeine in amounts equivalent to those found in the green tea extract had no effect on EE and RQ nor on urinary nitrogen or catecholamines.
Green tea has thermogenic properties and promotes fat oxidation beyond that explained by its caffeine content per se (E537).

Acute effects of ingestion of black and green tea on lipoprotein oxidation.
Acute effects of "4 standard cups of tea" in 20 healthy men significantly increases urinary 4-O-methylgallic acid for black and green tea (P < 0. 0001). Caffeine did not significantly influence lipoprotein oxidation. Compared with the water control, there was a greater lag time for black tea (5.4 +/- 2.9 min; P = 0.05) that was of borderline significance and a similar trend for green tea (4.4 +/- 2.8 min; P = 0.17). Slope and area under the oxidation curve were not altered (E539).

Effects of green tea on weight maintenance after body-weight loss.
A randomised, placebo controlled study to investigate whether green tea may improve weight maintenance by preventing or limiting weight regain after weight loss of 5 to 10 % in 104 overweight and moderately obese subjects.
Subjects lost 6.4 (sd 1.9) kg or 7.5 (sd 2.2) % of their original body weight during the VLED (P<0.001). Body-weight regain was not significantly different between the green tea and the placebo group (30.5 (sd 61.8) % and 19.7 (sd 56.9) %, respectively). In the green tea treatment, habitual high caffeine consumption was associated with a higher weight regain compared with habitual low caffeine consumption (39 (sd 17) and 16 (sd 11) %, respectively; P<0.05). We conclude that weight maintenance after 7.5 % body-weight loss was not affected by green tea treatment and that habitual caffeine consumption affected weight maintenance in the green tea treatment (E546).

 

[MikeMartial]

Interesting post, Big'r!

K to you when I can