What Is The Difference Between Spray-drying And Freeze-drying?
Freeze-drying refers to freezing water-containing materials into ice, and then converting the ice into vapor under a higher vacuum to remove it. Because freeze-dried products are carried out at low temperatures, proteins, microorganisms and the like will not be denatured or lose their biological vitality, and some volatile components in the substances lose little, and the growth of microorganisms and the action of enzymes cannot proceed, so the original nutrition can be maintained . Freeze dried fruit powder flavor is unbeatable but water solubility is not as good as spray-drying one . Thus it is often used as food additives, to improve their color, taste, shape and nutrition value etc. Such as cakes, ice cream and so on.
Spray-drying often involves continuous spraying, mixing and drying to change the substance from liquid to powder. The temperature used for spray drying is not very high. While removing microbial contamination, it can still effectively retain the taste, color and nutrition of the food. Since spray-dried products have better water solubility, Spray dried fruit powder is often used to make beverages . If you have requirements for water solubility, it is recommended to choose spray dry powder.
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