Operation Manual of 1-Methylcyclopropene(1-MCP)

 

"1-Methylcyclopropene" (English name 1-Methylcyclopropene) is abbreviated as 1-MCP. It is a small cycloolefin with a molecular weight of 54. It is a new type of ethylene inhibitor discovered by American biologists in the 1990s. It is the most effective preservative used by people in recent years, and it has been widely used in fruit production in developed countries. The test proves that 1-methylcyclopropene can be used to treat these ethylene receptors before the endogenous ethylene is produced in large quantities. This prevents the formation of ethylene receptor complexes and blocks the ethylene-induced Signaling. Thereby slowing down the physiological and biochemical reactions such as ripening and aging of fruits and vegetables, delaying the ripening and aging of fruits, and achieving the effect of keeping fresh. The birth of this technology is hailed as a revolution in the preservation technology of fruits and vegetables worldwide. Through the inspection of multiple authoritative institutions, this preservative is harmless to humans and will not cause pollution to the environment. The US Environmental Protection Agency has exempted its application restrictions and it is officially registered in the United States on July 17, 2002.

The use of 1-methylcyclopropene is very small, the amount is calculated in micrograms, and the method of use is fumigation. When it is used, as long as the space for storing fruits and vegetables is sealed for a prescribed time, and then ventilated, the effect of storage and freshness can be achieved. Especially for the fruits and vegetables of respiratory jump type, fumigation treatment within 1-10 days after picking can prolong the preservation time of 2-3 times. Taking apples and pears as examples, the fresh-keeping period can be extended from the original normal 3-5 months to 8-9 months. A large number of tests and practical applications have proved that 1-methylcyclopropene treatment of fruits can replace the effect of modified atmosphere storage. For most apple varieties, after they’re treated with 1-methylcyclopropene, the preservation effect is generally better than that of modified atmosphere storage. 1-Methylcyclopropene is not only effective, but also economical and easy to operate. It is currently the most advanced preservative for extending storage and shelf life of fruits, vegetables and flowers.

l Features of 1-methylcyclopropene:

1. Safe, non-toxic and harmless.

2. It is easy to use and has a long shelf life.

3. Low cost of use and economical benefit.

4. Can be used in a variety of storage methods, such as modified atmosphere storage, cold storage (car), simple storage, soil storage, etc., including production, transportation, wholesale, retail stores. All of them can use 1-methylcyclopropene to extend the preservation time.

5. It can keep color and taste and prevent storage diseases, for example, it can strongly inhibit the tiger skin disease and pear black spot disease of apple.

l Crops suitable for treatment with 1-methylcyclopropene:

Fruits: apple, pear, apricot, peach, persimmon, honeydew melon, plum, nectarine, kiwi, cherry, longan, bayberry, cucurbita melon, jujube, avocado, grape, mango, papaya, banana, passion fruit, Strawberry, pineapple, guava, etc.
Vegetables: tomatoes, lettuce, celery, kale, potatoes, carrots, daylily, onions, toon, beans, broad beans, peas, broccoli, asparagus, coriander, cucumber, onions, leeks, garlic sprouts, (green, red) peppers, North Korea Thistle, cowpea, sweet corn, enoki mushroom, etc.
Flowers: a) Cut flowers: roses, lilies, carnations, orchids, hibiscus, tulips, pansy, bell flowers, alstroemeria, snapdragons, treasure trees, bellflowers, delphinium, dianthus, gypsophila , Violet, phalaenopsis, blue sky hydrangea, rose, etc. b) Potted flowers: miniature rose, modern rose, fairy finger, winter flower begonia, bellflower, hibiscus, dragon boat flower, petunia, phalaenopsis, geranium, etc.

l Instructions for 1-methylcyclopropene:

1. Normal temperature fumigation can be carried out in an environment of 10 ℃ -25 ℃, fumigation time is 8-12 hours. In the case of cold storage or overwintering (0 ℃ -13 ℃), the fumigation treatment time should be properly extended, generally 12-24 hours. After the time is up, you can ventilate.

2. When fumigating, please close the fumigation space immediately, do not make the air in the space convection with the outside air, so as not to lose active gas.

3. Fumigation treatment with preservatives within 1-7 days after the harvest of agricultural products has the best effect, and the preservation period is most obvious.

l Method of Application

Our 1-methylcyclopropene is available in solid powder form(1-MCP 3.3% CG and 1-MCP 0.014% CG), and the effective ingredient is 1-methylcyclopropene gas. Because of its low concentration, the place must be airtight during treatment. When using preservatives, appropriate temperature, humidity control and sterilization measures should be combined to avoid dehydration and mildew of fruits and vegetables during storage. Prevent various factors from causing loss of fruits and vegetables during storage, so as to achieve a better preservation effect. The fruits and vegetables treated with our company's preservatives not only have a longer storage time, but also a longer shelf life after listing.When we use preservatives, appropriate temperature, humidity control and sterilization measures should be combined to avoid dehydration and mildew of fruits and vegetables during storage.We have to prevent various factors from causing losses during storage of fruits and vegetables, so as to achieve a better preservation effect. The fruits and vegetables treated with our company's preservatives not only have a longer storage time, but also a longer shelf life after coming into the market.

The usage of the powder form:

Powder is mainly used in larger storage spaces, such as cold storage, modified atmosphere storage, containers, etc. How to use:

1. First calculate the volume of storage space (length × width × height) (m³). For 1-methylcyclopropene preservative,each gram can handle 16-20 m³ of storage space.

2. Calculate the most suitable dosage according to the ambient temperature, space volume and predetermined processing time.

3. Pour the powder into the cup, and then fix the cup at a relatively high position in the space, then add 30-40 ml of solvent (purified water) to the cup and quickly seal the storage room for fumigation.

The fumigation method of the crypt:

Method 1: Collect the agricultural products that need to be kept fresh on a bin board or shelf, wrap the agricultural products tightly with a thick plastic tent, and then perform fumigation treatment in the tent.

Method 2: Fumigate directly in the warehouse (cellar). However, during fumigation, the warehouse (cellar) must be tightly sealed and must not leak.

The fumigation method of modified atmosphere storage / refrigerated storage
After the product is harvested and packaged, it can be directly put into the air-conditioned warehouse / refrigerated warehouse, and the fumigation treatment is unified in the air-conditioned warehouse / refrigerated warehouse. The packaging must be hollow carton, wooden box or plastic basket; Before sealing, use tablets to fumigate directly in the carton, and then put them into the modified atmosphere store / refrigerated store. Carry out fumigation treatment in the air-conditioned warehouse / refrigerated warehouse uniformly. The packaging must be hollow carton, wooden box or plastic basket.

Fumigation before long-distance transportation
Method 1. Fumigation before packing / delivery is handled in a airtight fumigation room, but the goods must be packed in bulk or hollow cardboard boxes.
Method 2: Handling in the car or container must ensure that the car is completely sealed and does not convect with the outside air; the goods are packed in bulk or hollow cardboard boxes; When using this method for fumigation, it is best to stop the truck. As the car is running, as long as there is a little air leakage, the active gas of 1-methylcyclopropene will be lost, which affects the preservation effect.