How to keep the green tea? Guidance of _'s nutrition

How to keep the green tea? Guidance of _'s nutrition
There are a lot of people after the green tea in Kaifeng, do not know how to keep, but cause the tea to go bad or lose flavour. In general cases, green tea can keep about time for less than one year under room temperature; And the green tea in Kaifeng, should quench into the airtight container and keep, had better use up within two months. Because the green tea is apt to pick up the moisture angry, the green tea put for a long time will lose perfume even if there is no Kaifeng, so should take the advantage that fresh and wash bubbles.
The packaging of green tea, generally divide vaccum packaging, aseptic packaging, gas-filled packing, getting rid of oxygen to pack and pack 5 kinds ordinarily. Green tea of packaging the, seal off, leave shady and cool dry position in, can keep 6- 12 month, unlikely to happen bad to change but go bad, lose flavour.
If the green tea that the general family has already seal off been, can keep with the following methods:
When a tea enjoys the tea again, should try hard to fill with keeping idle vastly, can reduce and store the air in the space, is beneficial to keeping Jean enjoying the quality of the tea.
Second, tea had better be bought on a small quantity or preserved with the inner wrapping, reduce the number of times of opening packaging, prevent contacting the air constantly. In this way, can guarantee the quality, wash the profit of bubble and relieve oneself again.
Third, can preserve the tea by the storage or gallipot of drying cabinet. Bottom put double-deck cotton paper in the pot, pot mouth put 2 cotton and then press the upper cover.
Fourth, green tea can be stored with the pot with double-deck cover, mdash; Better with the paper pot, other tin cans, tinplate pots,etc. are all all right, must still put a layer of cotton paper or kraft paper first in the pot, and then cover the cover closely.
Fifth, can prepare a small-scale refrigerator that specially stores the green tea, presume temperature until - under 5 , close closure that seal off, set people free in the refrigerator it. Otherwise, it is all right for the ones that store the tea in the general refrigerator to freeze the storehouse, but can't store other things any more.
Sixth, can rectify the clean thermos by tidying up, pour the tea sealed off in the bottles of people, fill in closely the stopper is preserved.
Five taboos that green tea is kept:
A taboo is moist: The green tea and tea are one kind to loosens the porous hydrophilic material, so have very strong picking up the moisture and returning the tide. While preserving the green tea, the relative humidity is comparatively suitable in 60%, will the mould spot happen because of sucking the tide in over 70%, and then acidifying deterioration.
Two taboo high temperature: It is 0-5 that the green tea and tea are the best to keep the temperature. Amino acid, carbohydrate, vitamin and fragrant material in the too high tea of temperature will be decomposed and destroyed, make quality, fragrance, flavour reduce to some extent.
Three taboo sunshine: The sunshine will promote the oxidizing of the green tea and tea and pigment and ester material, can resolve the chlorophyll into taking off the chlorophyll of magnesium. The green tea and tea are stored in the glass container or transparent plastic bag, after shone by the sunlight, the chemical reaction that its inherent material will arise, make the tea product qualitative change of the green tea bad.
Four taboo oxygen: Chlorophyll, aldehyde, esters, vitamin C in the green tea and tea,etc. are apt to bind with oxygen in the air, the green tea and tea after oxidizing will make the tea soup color of green tea red, deepen, make the nutritive value reduce greatly.
Five taboo peculiar smell: The green tea and tea contain macromolecule palm enzyme and rare type of terpene compound. The the intersection of material and natural disposition living wave extremely unstable, can wide to inhale the peculiar smell. So, tea and article with peculiar smell are mixed and put while storing, will absorb the peculiar smell and unable to remove.
Fresh kind tea drink, make tea keep inherent color, perfume, appearance their during storing, must make the tea in perfectly under the dry state, can't keep in touch with the articles with peculiar smell absolutely, and prevent exposing and contacting and shining with the air by the light; Look out for Jean to enjoy the tea and is not pushed, struck again, by keeping the true features, true quality and real bad smell of the tea.

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