Colours of mushrooms became darker with the storage time. In cans elaborated with brine 1, changes of colour from cream to brown were observed. However,
in canned mushroom elaborated with brine 2 only tonality increases were detected. In addition, the tasters noted that canned mushrooms elaborated with brine 1 were very dark, their colour was unpleasant and a lot of them showed super®cial black spots. In conclusion, the use of ascorbic acid in the brine improved the colour and acceptance of canned mushrooms and did not modify pH, therefore the use of this acid is recommended.On the other hand, the blanching process reduced the losses of weight and grade of mushrooms, improved
their colour and did not modify the pH. However, more intensive blanching processes (more time) did not produce signi®cant improvement of the quality parameters; long times for this process are not recommended.
Colours of mushrooms became darker with the storage time. In cans elaborated with brine 1, changes of colour from cream to brown were observed. However,
in canned mushroom elaborated with brine 2 only tonality increases were detected. In addition, the tasters noted that canned mushrooms elaborated with brine 1 were very dark, their colour was unpleasant and a lot of them showed super®cial black spots. In conclusion, the use of ascorbic acid in the brine improved the colour and acceptance of canned mushrooms and did not modify pH, therefore the use of this acid is recommended.On the other hand, the blanching process reduced the losses of weight and grade of mushrooms, improved
their colour and did not modify the pH. However, more intensive blanching processes (more time) did not produce signi®cant improvement of the quality parameters; long times for this process are not recommended.
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