Evaluation of vitamin preservation and availability on ultrasound-assisted air drying of apples (royal gala var.)

Autores UPV
Año
CONGRESO Evaluation of vitamin preservation and availability on ultrasound-assisted air drying of apples (royal gala var.)

Abstract

This work has examined the influence of ultrasonic-assisted air-drying on the dehydration of apple (Malus domestica L. var Royal Gala) and its influence in the availability of vitamins A, B1, B2, B3, B5, B6, D and E in the dried product. This study allowed estimating the effective water diffusivity in air-drying process subjected to ultrasonic waves and to evaluate the influence of ultrasonic processing on the availability of vitamins. The water effective diffusivity increased by up to 79% by ultrasound application, which caused a reduction of about 35% in the total drying time. The application of ultrasound increased the availability of vitamins A, B1, B2, B3, B6 and D, releasing the vitamin bounded to the cell membrane, protein or apoenzyme.