This may be ascribed to the fact that tomatoes have high titrat able acidity and phenolic content, which can stabilize ascorbic acid (Mapson, 1970;Miller and Rice Evans, 1997). Similarly, an observation of stable ascorbic acid content during postharvest storage of strawberries and blueberries was also reported (Kalt et al., 1999). Although nosignificant improvement of pressure treatment on ascorbic acidin tomatoes was observed, the extension of shelf-life by storingtomato under pressure could eventually provide a higher value of ascorbic acid when compared to conventional commercial tomato storage (13◦C)