Specificity of alcohol dehydrogenase in apple peel
J.B. Golding, Z. Wang and D.R. Dilley
Proceedings of 26th International Horticultural Congress. Volume of Abstract . Toronto, Canada, 11-17 August, 2002. Abstract S09-P-156. pp. 261.
2002
บทคัดย่อ
Alcohol dehydrogenase (ADH) is a ubiquitous enzyme found in apple peel that is responsible for the interversion of acetaldehyde and ethanol. ADH is upregulated in stressed tissue, particularly in anaerobic tissue and during controlled atmosphere storage of apples. ADH activity is important in aroma production and has been linked to the suppression of the long-term storge disorder, superficial scald in apples. ADH may play an important role protecting the fruit from chilling injury during storge of apples at low temperatures by reducing toxic aldehydes to alcohols. Apple peel ADH was isolated from ‘Rome’ apple peel and the substratespecificity was determined to a ragne of natural substrates. The results and implications of these experiments will be discussed in more detail.