What are the hazards of fruit preservatives?

In the past, when fruit was always only available in the current season, I don’t know when it started. The fruits are basically available all year round, all because of the fruit preservative. Do you have any doubts about the fruit sprayed with preservatives? Let’s take a look at how to remove the fruit preservative from the small series!

How to remove strawberry preservative?

Generally, the hardness of strawberries after harvest is decreased rapidly, and the phytic acid soaking method and the chitin preservation method can be used for preservation.

Phytic acid is a natural food additive that can continue the degradation of vitamin C in the fruit and maintain the acid content of the fruit.

Chitin can form a semi-transparent film on the surface of the fruit, thereby reducing the decline of nutrients and achieving the purpose of preservation.

Suggested removal method: When cleaning strawberries, rinse with water and gently touch the surface of the strawberry to remove most of the preservative.

How to remove citrus preservatives?

Fruits such as oranges, oranges, and ponkans often use sodium bicarbonate as a preservative.

Sodium bicarbonate itself has no direct bactericidal effect, but it dissolves water and makes the water alkaline, which increases the pH of the fruit surface and inhibits the growth and reproduction of Penicillium and Green mold in the slightly acidic environment.

At the same time, the lye cleans the residual dirt and germs of the fruit surface, and indirectly reduces the decay rate.

In addition, citrus fruits often use wax-coated preservatives, which can isolate oxygen and microorganisms, and have the effect of increasing gloss and reducing water evaporation.

Suggested removal method: whether to use sodium bicarbonate or wax to keep fresh, preservatives generally can not penetrate the epidermis of citrus fruits, so you don’t have to worry about eating, peeling.

How to remove the pear preservative?

The commonly used preservative for pears is Tiger Piling, which is an antioxidant fruit preservative, hardly soluble in water and soluble in ethanol. Tiger Piling can well control the occurrence of black skin disease in the physiological disease of Yali.

At present, the commonly used preservation method is to use Tiger Peeling to form a certain concentration of liquid medicine, and directly spray it onto the wrapping paper to make a wrap.

Suggested removal method: Since the preservative is sprayed on the wrap, it is not directly applied to the surface of the fruit, so it has little effect on the fruit. If you still have concerns, you can take the peeling method.

How to remove the preservative of grapes?

Tablets made of sulfite are the most ideal preservatives for fresh grape preservation.

The principle of grape preservation is that the sulphur dioxide released by the decomposition of sulfite can not only kill some bacteria causing grape rot and rot, but also significantly inhibit the abscisic acid content and ethylene release of grapes. Threshing in grape storage also inhibits polyphenol oxidase activity in various parts of the fruit during storage.

Recommended removal method: Since sulfite is a water-soluble preservative, it can be rinsed with water.

How to remove the apple preservative?

The preservative commonly used in apple preservation is called methyl thiophanate.

The original drug is colorless crystal, insoluble in water, soluble in organic solvents, stable to acid and alkali. This drug is a broad-spectrum fungicide of benzoimidazole. Commonly used in apples, it can also be used for antiseptic storage of bananas, citrus, pineapple, cantaloupe, sweet potato, etc. Dipping or coating treatment is generally employed.

In addition, the agent has low toxicity to humans, livestock, bees and fish, and is safe for crops. It can also be used to control various fungal diseases such as sclerotinia, gray mold and powdery mildew on fruits and vegetables.

In addition, tiger skin spirit can also be used when apples are kept fresh, and the method of use is the same as that of pears.

Suggested removal method: Since thiophanate-methyl is insoluble in water, it is best to peel it when eating.

How to remove the preservative of peach?

During the storage of peaches, peaches are often rotted due to brown rot.

The commonly used preservation method is the preservative preservation method, and the benomyl suspension having a mass fraction of 0.1% is immersed for 25 minutes at a temperature of 40 ° C to prevent the peach from decaying.

Recommended removal method: Rinse with water and rub the skin of the peach by hand, or peel.