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The effects of several dehydration processes on chemical compounds which may contribute to apple flavours and histological changes were investigated. It was shown that the effects on chemical compounds and histological changes were minimal by freeze dehydration as compared with other dehydration processes studied. Cryogenic freezing and osmotic dehydration treatments prior to freeze dehydration prevented cellular damage during the freezing step and had little adverse effect on the tissue of freeze dehydrated apple slices.
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Lee et al. (1967) studied this question.
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