Why does green tea turn brown?

In this guide, we will address and answer the query,” why does green tea turn brown?” and answer other similar  “related questions like “What are the different varieties of green tea?” and “Is green tea good for you?”

Why does green tea turn brown?

Oxidation

Green tea turns brown due to oxidation. The polyphenols in green tea are oxidized when the tea leaves are exposed to air, making them brown. The oxidation process is what gives green tea its characteristic flavor.

The longer the tea leaves are exposed to air, the more they will oxidize and the darker they will become. This is why green tea that has been stored for a long time will have a darker color and a more intense flavor than fresh green tea.

Poor water quality

Water quality can cause green tea to turn brown if the water has a high concentration of minerals or other impurities. If the water is too hard or has a high pH, it can cause the tea to turn brown.

 Brewing green tea with poor quality water is one of the most common mistakes people make. This is because water quality has a direct impact on the taste, aroma, and color of the tea.

 If the water is of poor quality, it will make the tea taste bitter, and the color will be dull. It is important to use filtered or spring water when brewing green tea. This will help to ensure that the water is free of impurities and will not affect the flavor of the tea.

Brewing Process

Brewing green tea for too long will cause it to turn brown. The longer the green tea is brewed, the more the chlorophyll in the leaves will break down, causing the tea to turn brown.

Brewing green tea for too long can also make it bitter. If the tea is bitter, it is because the tannins in the leaves have been released. Tannins are astringent and can make the tea taste bitter.

The type of tea

Finally, some types of green tea, such as matcha, are intentionally oxidized to produce a specific flavor profile, which also causes the tea to turn brown. In general, browning is a natural process that happens to all types of tea over time.

What are the varieties of green tea that easily turn brown?

Sencha

This type of green tea has a grassy, vegetal flavor and a bright green color. This type of green tea has a grassy, vegetal flavor and a bright green color. When brewed it turns to yellow color with a green hint. 

Matcha

 Matcha is a type of green tea powder that is used in traditional Japanese tea ceremonies. It has a bright green color and a grassy, vegetal flavor.

When brewed, this variety turns bright green in color when brewed for too long it can turn brown

How can you prevent green tea from turning brown?

Green tea can turn brown when it is exposed to oxygen. To prevent this from happening, store green tea in an airtight container in a cool, dark place. 

Green tea can also turn brown if it is brewed for too long or at too high of a temperature. To prevent this, brew green tea for 1-2 minutes at 190 degrees Fahrenheit. 

Finally, green tea can turn brown if it is exposed to light. To prevent this, store green tea in an airtight container in a dark place.

Is green tea good for you?

Green tea has many purported health benefits. These have been linked to polyphenols, particularly catechins, found in green tea.

Green tea is a good source of antioxidants and has been linked to a reduced risk of several types of cancer, including ovarian cancer, colorectal cancer, and breast cancer.

What makes each variety of green tea have a different color profile?

Additives can affect the color of green tea by adding pigments or other substances that can change the color of the tea. Pigments are added to green tea to give it color. Other substances, such as chemicals and minerals, can also be added to green tea to change its color.

Some green tea manufacturers use artificial colorings to make their tea appear greener. However, these artificial colorings may not be safe for human consumption.

It is best to choose green tea that is made with natural ingredients and does not contain any artificial colorings. additives influence the color of different tea varieties. 

For more details on which additives are added to green tea. Click here

Conclusion

 In this brief guide, we have addressed the query, “why does green tea turn brown?”  We have also discussed, “What makes each variety of green tea have a different color profile?” and “Is green tea good for you?”

Hope you found this blog useful, if you have any questions, please let us know

Citations

https://www.healthline.com/nutrition/top-10-evidence-based-health-benefits-of-green-tea

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Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.