Based on the results of the sensory evaluation, a maximum storage period of four months
was set for the frozen product obtained from unblanched mushrooms. Frozen products having undergone
preliminary processing retained good sensory quality for up to 12 months. Soaking, blanching and freezing
resulted in the appearance of colours, such as yellow, honey and pink–violet. As a result of freezing,
decreases in the contents of thiamine, riboflavin and vitamin C were noted. Blanching in water, as a
method of pre-processing, was sufficient for maintaining acceptable sensory quality.