The concentration of AA decreases
during storage depending on environmental conditions such as
equilibrium RH, temperature, oxygen content, light (Barba et al.,
2012). It reacts with oxygen during food storage to produce Ldehydroascorbic
acid (DHA) that also has vitamin C activity in the
human body. Anaerobic degradation of AA through hydrolysis also
occurs simultaneously to AA oxidation when oxygen is present,
producing 2-keto-L-gulonic acid (Kurata and Sakurai, 1967).