The TSS content in plant tissues is mainly related to the
presence of soluble sugars and also smaller amounts of organic
acids, vitamins and proteins. Table 1 shows that the highest TSS
values were found in control samples (day 0) and N2-enriched MAP
samples. On the other hand, a significant reduction in TSS index
was verified in vacuum-packaged and Ar-enriched MAP samples,
probably related with over-maturation or senescence. The
utilization of free sugars in various metabolic processes could
also cause the decrease of TSS contents.