Natick . Massachusetts 01760 Food
نویسنده
چکیده
Studies were conducted on the effect of controlled atmosphere storage as well as chemical pretreatments on the quality of lettuce as well as biochemical composition of lettuce leaves, Lactuca sativa L., cultivar "Great Lakes." In a CA of 2.5% CO2 and 2.57 02, the lettuce heads could be stored up to 75 days. Pre-storage treatments with microbeand s6nescenceinhibiting chemicale (Captan, Phaltan, Mycostatin and N6 -benzyladenine) had detrimental effects on the control atmosphere storage of lettuce at 350 F. CA significantly inhibited the degradation of chlor-ophyll throughout the storage period. There was no significant effect of CA or other treatments on total sugars, reducing sugars, starch, total N, pH, organic acids, amino acids or total carotenes. The soluble proteins and the reducing sugars were lower In he CA lettuce than in the control lettuce. The lettuce treated with Plantan or Phaltan in combination with polyethylene packaging had higher amounts of soluble proteins and lower amounts of chlorophylls.
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