Photos
The analysis of the photos of mushrooms (Fig. 2) showed that
the test pouches containing blank samples (without antioxidant
agent) were completely spoiled after 8 days, with the appearance of
brown colour and blotching. The mushrooms packed with sodium
metabisulphite/citric acid (0.60/0.15 g/m2) maintained white
colour during 11 days. However, yellow stains were observed on the
edge of the surface of some samples.