Sublimation vörur
Sublimation vörur.
Sublimation vörur eru að þorna mat með hröðum kælingu og frysta vatnið sem er í tómarúminu. Sem afleiðing af vörunni að gufa upp næstum allan raka (vatn) og rakainnihald þess fer ekki yfir 8-10%.
Lýsing:
Sublimation (sublimation, frysta þurrkun, frostþurrkun) er umskipti efnis frá kristölluðu (solid) staðið beint að gufunni (bensín) án þess að fara í gegnum fljótandi ástand.
Ferlið sublimation er mjög hratt (or rather sharp) cooling the initial product to a low temperature (um -50 0C og neðar). Reyndar, the sooner the product is frozen, þ.e.a.s.. the higher the freezing rate, the smaller of the vatncontained in the raw product, the formation of ice crystals which due to their microscopic size not cause damage to the tissues of the product. When rapid freezing they do not tear the tissues and cells of the product. Þvert á móti, the product is frozen slowly, larger crystals are formed af ís, which break the tissues and cells of the product, and it loses its original shape and form.
Then the original product is placed in a vacuum dryer. Do it with the intention to freeze the moisture out of it in the form of water. The water passes from solid to gas, bypassing the vökvi ríki. Ultimately all these actions from the product evaporate almost all the moisture (vatn) og rakainnihald þess fer ekki yfir 8-10%. Hins vegar, it is completely (næstum því 99%) is preserved all the vitamins, steinefni, enzymes and other biologically active substances, since the sublimation process eliminates heat treatment.
Freeze-dried product can be stored in the refrigerator or at low temperatures, it can be stored at room temperature. To restore the freeze-dried product add plain water.
Storage freeze-dried product is not always. He also has a limited shelf life (geymslutími). Til dæmis: vegetables and berries are stored for about 2 ár, and dairy products – 13 mánuðum.
Sublimation is exposed to berries, ávextir, grænmeti, safi, mjólkurvörur, morgunkorn, kjöt, fiskur, etc products. As a result of sublimation, they become either a powder (liquid foods: safi, mjólk, o.s.frv.), either in whole food or part thereof (all other solids).
Sublimated products have a lot of advantages.
Umsókn:
- matvælaiðnaður,
- vefnaðarvöru,
- lyf.
Athugið: © mynd ,
