Visual panel
The quality of mushrooms was visually evaluated by a trained
panel of 9 people, by means of a ranking test and a paired comparison
test. Table 2 contains the results of the ranking test for the
two most efficient antioxidants. An average scoring of 40 evaluations
was taken into account. After 1 and 4 days of storage, the
mushrooms that had been stored in metabisulphite/citric acid (0.6/
0.15 g/m2) test pouches scored better (1st day score: 2.1; 4th day
score: 2.6) than the mushrooms that had been stored in blank test
pouches (1st day score: 4.2; 4th day score: 5.2). No differences in
the score were obtained between these two kinds of pouches after
7 or 11 days. Also, the mushrooms stored in green tea extract test
pouches were scored slightly better than the mushrooms stored in
blank test pouches, pointing out that the former looked fresher than the latter. These results were confirmed by paired comparison
tests (Table 3)