FOOD TECHNOLOGY

Detailed explanation-1: -Freeze-drying, also known as lyophilization, is a process in which water in the form of ice under low pressure is removed from a material by sublimation.

Detailed explanation-2: -Lyophilization or freeze drying is a process in which water is removed from a product after it is frozen and placed under a vacuum, allowing the ice to change directly from solid to vapor without passing through a liquid phase.

Detailed explanation-3: -Freeze drying, which is also known as lyophilization, is the process of removing water from a product by freezing it then subliming the ice to vapor. Sublimation is a physical phenomenon by which solid ice is converted directly into vapor without it passing through the liquid state.

Detailed explanation-4: -The name lyophilization is derived from the Greek for ‘to make solvent-loving’. Constituents of the material are kept immobilized during sublimation drying by the ice crystals. The shape of the dry substance is broadly the same as that of the frozen, wet substance and migration to the surface to form a skin is reduced.