The applied light intensity (5 µmol m -2 s -1 PAR) is considered well below the light compensation point which indicates that photosynthetic sugar production may not be the primary process involved in sugar accumulation. This strongly indicates that the carbohydrate level is a key factor in extending shelf life of fresh cut lettuce stored under light. 1 Calories : 22 Fat : 0.1g Sodium : 16mg Carbohydrates : 5.2g Fiber : 2.2g Sugars : 2.9g Protein : 1.1g Potassium: 151mg Folate: 38.3mcg Vitamin K: 67.6mcg Vitamin C: 32. The shelf life showed a positive correlation with the amounts of carbohydrates in the fresh-cuts measured at day 7 or 14 of the storage. This cabbage nutrition information is provided by the USDA. In butterhead lettuce, the carbohydrate levels increased during storage up to 10 times compared to the initial level in iceberg lettuce the light greatly prevented carbohydrate depletion.

of total carbohydrates and 9 grams of fiber will have 17 grams net carbs. The prolonged shelf life coincided with vastly increased levels of carbohydrates in the lit samples. NOTE: I prepare a salad of romaine and iceberg lettuce, adding an Italian. When the fresh-cut lettuces were stored under a low intensity monochromatic light (red, blue, red + blue, green), either continuous or in a 12-h photoperiod, the shelf life was markedly prolonged over the dark control.

During dark storage of fresh-cut product prepared from butterhead and iceberg lettuce the levels of carbohydrates (glucose, fructose, sucrose, starch) decrease.Ĭarbohydrate levels were low in butterhead lettuce at the start and levels decreased by over 50% during storage at 12☌ carbohydrate levels in iceberg lettuce were much higher at the start (~350 mg/g DW) and decreased by over 70% during storage.

Iceberg lettuce carbohydrate amount