How to distinguish the quality of grapes, how to distinguish the quality of grapes How to buy grapes

The quality of the grapes:

1.When buying grapes, there is a white "frost" on the skin.

2.You can try the bottom grape on the grape ear, because in general, the bottom grape is the least sweet, and if the grain is very sweet, it means that the whole spike of grapes is very sweet.

How to store grapes:

Within 1-3 days after the frost falls, pick the fruit ears with compact shape, bright color, disease-free and harmless, put them on the kang of the idle house, and pile them in two layers. The indoor temperature should not exceed 5 degrees Celsius.

Pay attention to ventilation for the first few days, and maintain humidity in the future, splash some water if necessary, and use paper paste on doors and windows.

Half a month later, cover the grapes with a layer of waste newspaper. When the temperature drops to 0 degrees Celsius, cover a layer. When it is cold, you should add a layer of quilt, and you can also add a fire, but you should use a stove and not burn the kang.

The total temperature is controlled between 0 and 4 degrees Celsius and the humidity is maintained, and the grapes can be stored until the following spring.

When buying grapes, there is a white "frost" on the skin. Experts pointed out that the normal "hoarfrost" is the crystallization of sugar, the distribution is natural and uniform, and does not cover the color of the grape skin itself, which can indeed indicate that the grapes are fresh and sweet, but some white spots may be the residue of copper sulfate fungicide (Bordeaux liquid), its appearance is unevenly distributed, often dark blue traces, and it needs to be rinsed with water several times when eating to remove the residue.

Another practical trick for buying grapes is to try the bottom grape on the spike, because in general, the bottom grape is the least sweet, and if the grain is sweet, it means that the whole spike is sweet.

Hope it can be helpful to you, hope.

Carefully inspect each grape and eat it as long as the skin is not rotten. If there are rotten spots on the skin of the grapes, it means that the grapes are spoiled and should be discarded. Strangely, the skin of the grape is a reflection of the flesh, and the reason for this is not known, but it is just empirical.

When buying grapes, you must pick the fruit that is relatively firm and full, which is relatively fresh, and the soft ones are the "leftovers" that have been sold for a few days.

1. Look at the fruit stalks. Fresh grapes are bright green in color, and the sticks between the stems are strong, so that no fruit falls when the bunches are carried by hand.

2. Look at the hoarfrost. Fresh grape skins have a layer of hoarfrost that will fall off when touched by hand, and the thicker the hoarfrost, the better the quality. Myojin.

3. Look at the fruit. Good quality grapes, bright color and dark color; The fruit is tightly distributed, uniform in size, full and compact in appearance, no wilting, and no spots on the surface.

4. Smell the smell. Good quality grapes have a strong fruity aroma and a long-lasting aroma, so don't buy grapes if they don't have enough flavor and have a sour and alcoholic taste.

5. Weigh the weight. Generally, grapes of the same variety and size, the heavier the hand spring acacia before the feeling, the better, such a high glucose content, rich juice, better quality, good taste.

Common grape varieties are Victoria, Sunshine Rose, Giant Rose, Drunken Golden, Kyoya, Summer Black, Goldfinger, Vine Minoru, Red Barado and Black Barado. The correct cleaning method is to soak it in a basin with a little salt, and finally rinse it with water; You can also soak it in flour water for a few minutes, wash it with water and eat it.

Victoria: The skin is medium-thick, the flesh is hard and crisp, and the taste is sweet and refreshing.

Sunshine Rose: Crispy meat, with a complex aroma (rose and creamy).

Giant rose: thin skin and thick flesh, with a strong rose fragrance, fragrant and refreshing.

Drunken golden aroma: soft flesh and juicy.

Kyoya: The skin is medium-thick, juicy and sweet, with a strawberry flavor.

Summer Black: The skin is thick and crisp, colorless, and the flesh is hard and crisp.

Goldfinger: Honey-scented.

Minoru rattan: The meat is fat, juicy, sweet and less sour.

Red Barado: Crisp and sweet.

Barado Noir: The aroma is unique, the flavor is strong, and the fresh food quality is excellent.

Summary. Hello, here's how to tell if the grapes are last year:1

Fresh grapes have a layer of white frost on the surface, which will fall off when touched by hand, so grapes without hoarfrost may have been picked and left, and the hoarfrost has fallen. 2.Fresh grapes have stiff stems, and the stalks are relatively firm between the stems and the grains, and the ordinary stems that have been stored for a long time will be crumbling when they are lifted.

3.The fruit brush is the part of the grape pedicle that extends into the pulp, and if you want to judge the condition of the fruit brush, you should pluck a fruit from the grape bunch and check whether the fruit brush is still on the fruit stem. If it's still there, it means that the bunch of grapes is fresh.

Hello, here's how to tell if the grapes are last year:1Fresh grapes have a layer of white frost on the surface, which will fall off when touched by hand, so grapes without hoarfrost may be picked and leftover, and the hoarfrost will fall.

2.Fresh grape stalks are hard and sturdy, and the stalks and fruit grains are relatively firm, and the ordinary fruit stems that have been stored for a long time are crumbling. 3.

The fruit brush is the part of the grape pedicle that extends into the pulp, and if you want to judge the leakage of the fruit brush, you should pluck a fruit from the grape bunch and check whether the fruit brush is still on the fruit stem. If it's still there, it means that the bunch of grapes is fresh.

I went to buy a bunch of grapes today, and a stall owner told me that these grapes were from last year, and they were added with preservatives, and I thought about it for a long time, even if I added preservatives, I wouldn't care for so long, so I was blind with a curious attitude, and asked for a professional chain god Sakura.

If it is last year's grapes, they are mostly refrigerated in cold storage, and after they are sold in the market, the color is darker.

Many fruits will be refrigerated in winter and sold next year.

So preservatives can stay fresh for so long, right?

The preservative is sprayed before it is sold.

The main thing is that the cold storage preserves the taste of the grapes.

1.Grape preservation leakage cold storage: the storage temperature is -1 0, the relative humidity in the warehouse is controlled at 90% 95%, and the storage time of the cold storage pants is about 1-2 months; 2.

Grape controlled atmosphere cold storage: the storage temperature is 0, the relative humidity in the warehouse is controlled at 90% 95%, the oxygen content in the warehouse is 2% 4%, the carbon dioxide content in the warehouse is 3% 5%, and the storage time is about 4-5 months.

Summary. Hello dear! The ripeness and appearance of the grapes can be used to tell if they are from last year.

If the color of the grapes is darker than in previous years, then it may be the result of last year. This is because grapes take more time to ripen and usually stay on the tree longer to turn to this color. 2.

Taste: If the taste of the grapes is more sour or bitter than in previous years, then it may be the result of last year. This is because the longer the grape stays on the tree, the more intense it becomes.

3.Size and shape: If the size and shape of the grapes are different from previous years, then it may be the result of last year.

This is because the longer the grapes are grown on the tree, their size and shape change. 4.Leaves:

Check the leaves on the vine. If the leaves are yellower or browner than usual, then it may be the result of last year. This is because grapes need more nutrients to ripen, and if the nutrients on the tree are insufficient, the leaves may change color.

1.Color: If the color of the grapes is darker than usual, then it may be the result of last year.

If the taste of the grapes is more sour or bitter than in previous years, then it may be the result of last year. This is because the longer the grape stays in the vine, the more intense it becomes. 3.

Size and shape: If the size and shape of a large stall of grapes is different from previous years, then it may be the result of last year. This is because the longer the grapes are grown on the tree, their size and shape change.

4.Leaves: Inspect the leaves on the vine.

If the leaves are yellower or browner than usual, then it may be the result of last year. This is because grapes need more nutrients to ripen, and if the nutrients on the tree are insufficient, the leaves may change color. Thank you for your <> inquiry

That is to say, if you add grape preservative, you can store it for half a year in cold storage, right?

Grape preservative is a commonly used food preservative, which can extend the shelf life of food. Whether the grape preservative can be stored in cold storage for half a year depends on a variety of factors, such as the grape variety, ripeness, type of preservative and the amount of pie shed. Orange pie.