Friday, June 26, 2020

What is the "golden flower", "mildew" and "white frost" of tea?

1. About Tea Golden Flower

The so-called golden flower is "coelocystis coronatus". This fungus looks very beautiful. It looks like a golden flower under the microscope. Therefore, the name of the golden flower fungus is an enzyme fungus that is beneficial to people. "Golden Flower" can secrete amylase and oxidase, can catalyze the conversion of protein and starch in tea into monosaccharides, catalyze the oxidation of polyphenolic compounds, and transform into beneficial substances for human body, so as to improve and optimize the taste and other characteristics of tea.

Which tea leaves can grow golden flowers?

Black tea (including Pu'er tea) and the unique "crown mycoplasma" in Fu tea are commonly known as golden flowers. Studies have confirmed that the golden flower fungus can actually change the "scent" characteristics of tea. Therefore, Jinhua should not be regarded as one of the expressions of "more Chen Yuexiang".

2. About moldy tea

The tea is moldy and grayish, with a mildew smell, and shakes with dust in the sun.

You can use your fingers to twist the tea leaves. If you can twist the tea leaves into powder, it means that the tea is dry. If the tea leaves are not broken, it means that the humidity is high, and it may even be moldy, and it may contain mildew. Bubble, darker than the original color, and has a smell, not enough fragrance.

The moldy and spoiled tea contains penicillin, chlorcycline, and flavin. Therefore, mildewed tea leaves are not drinkable and should be discarded.

Golden flowers are generally found in the center of tea cakes and tea bricks, and they can only be seen after prying open. Most of the moldy Aspergillus flavus is caused by storage time, so it usually only exists on the surface.

The shape of the golden flower is one by one, scattered scattered on the tea bricks, there is no mildew. It is relatively firm in tea and cannot be easily wiped off; while Aspergillus flavus and white mold are symbiotic in sheet form, there must be mildew in Aspergillus flavus and they are easier to blow away. The golden flower, which is a beneficial bacterium, is indistinguishable from so-called mold.

3. About tea white cream

Commonly known as "tannin", it is the crystallization of the oxidation of tea itself and the action of enzymes. The process of producing hoarfrost is actually the process of tea fermentation, not foreign mold. The tannic acid of the tea itself will slowly ferment and oxidize during this process. The bitter taste in the tea will gradually be replaced by beneficial substances. The tea water will also change from green to yellow orange. In five to ten years, or even longer, the tea water From yellow to dark red, it finally becomes delicious and sweet.

How is tea white cream formed?

Too much water inside the tea leaves is constantly moving towards the surface of the tea leaves, and the endoplasmic content of the tea leaves is constantly changing. The low-temperature and low-humidity environment has been aging for a long time, and the "white frost" is gradually formed by the moisture of the tea leaves.

Which tea leaves will have hoarfrost?

Not all teas will have hoarfrost, which is more common in small green mandarins, black teas, and oolong teas.

What is the difference between "white frost" and moldy tea?

From the surface, the "white frost" of the tea is very similar to the mold of the tea. Whether it is white frost or mildew, the tea will have white traces of mold. However, there are still differences when carefully distinguished:

"White frost" is white and colorless transparent needle-like crystals, with no other attached colors, very pure, without odors and off-flavors, and the tea leaves will not rot and clump.

"Mouldy" refers to the white hair growing in the tea leaves, smelling of musty rot, the tea leaves that are severely moldy will rot and clump, and green hairs will grow on the tea leaves.

Jinhua and hoarfrost have in common

1. All grow on tea

2. All are caused by changes in the endoplasm of tea

3. It takes a certain time to store

4. It is the performance of excellent tea quality

5. Both are good for the body and harmless

The difference between golden flower and hoarfrost

1. The golden flower grows in the tea leaves (tea cakes and tea bricks), and the hoarfrost is attached to the surface of the tea leaves.

2. The golden flower is golden yellow, the hoarfrost is crystal and transparent, and when the number reaches a certain level, it is white.

3. Golden flower is not easy to grow at low temperature, and hoarfrost is easier to grow at low temperature and low humidity.

4. Golden flower is a beneficial bacteria, hoarfrost is a crystal, is an acidic substance.

Therefore, as can be seen from the above, whether it is "golden flower" or "white frost" is grown on the tea, not foreign matter, it is a beneficial and harmless substance to the human body, and it is also a manifestation of excellent tea quality.

However, when the two are distinguished, they can't get rid of another form of tea that is very similar to them and difficult to distinguish-"mouldy" or moldy. Because whether it is golden flower, mildew, or hoarfrost are very similar in morphology, it is difficult to distinguish the three in a short period of time without sophisticated instruments and equipment for experimental observation, or sufficient system knowledge and tea identification experience. Of the person.

Therefore, when we talk about the two of them, we will compare and explain together with the other. In this way, it will be more comprehensive and more systematic to identify the similarities and differences between the three. It will make us buy tea, drink tea, and save tea. Eat less and lose a lot during the process, avoid a lot of trouble, and more importantly, it is more conducive to the health and safety of tea!

No comments:

Post a Comment