2024-08-24
Pineapple is one of the famous tropical fruits. In some island-style films, apart from coconuts, the most common fruit is pineapple. The protagonist is blowing the sea breeze, bathing in the sun, taking a mouthful of coconut milk and pineapple, which is really pleasant.
Although pineapple is delicious, it will have a mouth-piercing sensation when eaten directly. Because pineapple contains a kind of bromelain, if this protease is eaten directly, it will damage the oral mucosa, irritate the skin, and cause numbness and tingling in the mouth.
Fruit shops usually soak pineapple in salt water to eliminate the sensation of mouth sticking. Salt can indeed destroy the protease and make it inactive, but the salt water cannot penetrate completely. The outside is sweet, but the inside is still sour. Soaking in salt water directly cannot completely decompose the protease.
The protease in pineapple is not only afraid of salt, but also afraid of high temperature. The protease will be completely eliminated after heating. The pineapple sweet and sour pork, pineapple fried rice, canned pineapple, etc., which we often eat, It tastes sour and sweet, and there is no "astringent" feeling at all.. Therefore, if you want fresh pineapple without sticking your mouth, just heat and cook the pineapple.
Although there are pineapple varieties on the market that can be eaten directly without any treatment, the price is much higher. For economy and convenience, you might as well buy a few cans of canned pineapple, the flavor will not decrease and the shelf life will be long. So how is Canned pineapple production line made? Now LWT will give you an introduction.
1.Washing
Wash the silt and debris on the surface of the pineapple with clean water.
2. Grading
The pineapple fruit is sorted and graded according to the diameter of the pineapple, which is convenient for subsequent peeling and cutting.
3. Peel the skin and poke the heart
Use a pineapple processing machine to peel off the skin and poke off the hard core.
4. Trimming
After peeling and stabbing the heart, supplemented with manual trimming, use a sharp knife to remove the glare, residual skin, and rotten
scars on the surface of the pineapple, filter out the bad fruit, and rinse it with clean water again.
5. Slicing
Use a single slicer to cut the pulp into ring-shaped pieces, and cut the unqualified pieces or pieces into sectors or pieces.
6. Filling
Canned food can be filled with a canned food production line filling machine, and diced fruit can be filled with a diced material filling machine. Use a juicer to add a certain proportion of sugar water.
(Ding material filling machine)
7. Exhaust and sealing
It adopts hot exhaust seal, the temperature is about 98℃, and the temperature of the tank center is not lower than 75℃. The vacuum degree of the vacuum seal should be above 53.3KPa.
8. Sterilization and cooling
The sterilization time of glass bottles in the pineapple canned product production line is 5-25min/100℃ (water), and the temperature is immediately lowered to 38℃ in stages after sterilization.
9. Inspection and storage
Wipe the cooled cans and keep them warm for one week, and label the qualified ones and store them in the warehouse for sale.
Canned pineapple should be eaten as soon as possible after opening the lid to prevent the pineapple pulp from being exposed to the air for a long time to change its flavor.
In fact, almost all canned food should not be stored at normal temperature for a long time after opening the lid, because the canned food is sterilized by high temperature, and after opening the lid, it returns to the environment full of microorganisms, and the food will quickly deteriorate.
