Green tea and black tea differences

This article was endorsed by Elisenda Carballido - Dietitian nutritionist. Postgraduate in Phytotherapy and master in Nutrition and Metabolism.


What is the difference between black tea and green tea?

Mainly, these two types of teas differ in their production process.

Green tea and black tea are made in the same way (they follow the same production steps), although black tea is subjected to a fermentation process (pseudo-fermentation) which provides it other characteristics.

Black tea in an oxidized tea: After leaf rolling, black tea remains in a room for two hours to completely oxidize its polyphenols.

Green tea retains more polyphenols, tannins, catechins and antioxidants than black tea because it has only been partially oxidized.

Green tea color is green and rich in chlorophyll.

– Black tea is less antioxidant, but it contains more caffeine because this is released during the fermentation process.

– In black tea, tannins have been oxidized in theaflavins and thearubigins, giving this infusion its reddish components.

– Although not as rich in catechins, black tea contains more anthocyanins than green tea.

Types of tea

Types of tea

Table of composition of green tea and black tea

In the following table of contents we see and compare both, black tea and green tea. They show their approximate values, differences in the concentration of different nutrients, minerals, vitamins, caffeine content and flavonoids, between a dry tea and its final value (real) after realizing an infusion.

Comparison chart of nutritional composition per 100 g. black tea and green tea
Nutrient Infusion















hydrates (g)

0,1 0,1 35 32
Proteins (g) 0,1 0,2 24 20,5
Fat (g) 0 0 4,5 2,5
Fiber (g) 0 0 10,5 11
Calcium /Phosphorus 2 / 1 2 / 3 440 / 280 470 / 320
Sodium / Potassium 2 / 19 2 / 15 3 / 2.200 3 / 2.000
Iron (mg) 0,1 0 20 17,5
Vitamin C (mg) 5 0 250 0
Vitamin A (UI) 0 0 13.000 900
Vitamin B3 (mg) 0,1 0.2 4 10
Caffeine (mg per litre) 0,02 0,05 2.2 2.7
Catechins 139 32
theaflavins 0,06 6
thearubigins 1,07 73,5


Differences between the active ingredients of green tea and black tea

– Green tea has more amount of minerals like potassium and iron, than black tea, so it is more diuretic and alkalizing. Green tea is the most suitable in cases of fluid retention or edema.

– When it comes to vitamins, , green tea contains more vitamin A and vitamin C than black tea. In fact, black tea does not contain vitamin C and vitamin A content is more than 13 times lower than in green tea.

Black tea contains more than twice vitamin B3 than green tea, but, when we make an infusion make these concentrations decrease and almost equal values of both teas.

– Among the flavonoids, we must highlights the high antioxidant content of green tea catechins, which have antioxidant effects. In addition, scientific studies have shown that green tea catechins have slimming effects, against cholesterol, stimulating metabolism and fat burning (thermogenesis).

Black tea is less antioxidant than green tea because catechins are oxidized to theaflavins and thearubigins, astringent principles that give the color red to black tea infusions.

Caffeine comparison between different types of tea

Among the different types of teas, there are significant differences in their content of caffeine (alkaloid):

Black tea is richer in caffeine than green tea, with nearly twice the caffeine.

Related information on green tea:

Green tea characteristics

Green tea elaboration

Green tea benefits

Green tea contraindications

Green tea side effects

Green tea toxicity

Green tea to lose weight

Green tea photos

punto rojo More information on tea.

Written by Editorial Botanical-online team in charge of content writing

9 July, 2019

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