Iceberg lettuce carbohydrate amount8/13/2023 The possible involvement of gluconeogenesis in sugar accumulation under low light is discussed. Nutrition Facts and Health Benefits Iceberg Lettuce Nutrition Facts and Health Benefits. 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. A 4-ounce serving of 100 grape juice has 18 grams of sugar. This strongly indicates that the carbohydrate level is a key factor in extending shelf life of fresh cut lettuce stored under light. 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. Nutrition Facts Serving Size 1 lb Amount Per Serving Calories 64 Daily Values Total Fat 0.64g 1 Saturated Fat 0.082g 0 Trans Fat - Polyunsaturated Fat 0.336g Monounsaturated Fat 0.027g Cholesterol 0mg 0 Sodium 45mg 2 Total Carbohydrate 13.47g 5 Dietary Fiber 5.4g 19 Sugars 7. 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. The prolonged shelf life coincided with vastly increased levels of carbohydrates in the lit samples. 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.
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