Lettuce and Its legend.
Article Content:
- .Basic Botanical Data of Lettuce.
- .Brief Description of Lettuce.
- .Lettuce history in ancient world.
- .Modern lettuce types class.
- .Edible Uses and Nutritional compositions.
- .Medicinal Uses Disclaimer.
- .Other reactions and Uses.
- .Research Update:Lettuce or Lactuca sativa.
Edible Uses and Nutritional compositions.
Leaves; Oil; Seed.
Leaves - raw or cooked. A mild slightly sweet flavour with a crisp texture, lettuce is a very commonly used salad leaf and can also be cooked as a potherb or be added to soups etc. A nutritional analysis is available.
Seed - sprouted and used in salads or sandwiches.
An edible oil is obtained from the seed. The seed is very small, extraction of the oil on any scale would not be very feasible.
Part Used for Food:Originally, edible oil from seed. Some oilseed varieties still exist. Presently, leaves, either loose as in leaf lettuce, or in a head (large bud) which forms prior to flowering are eaten. Domestication involved selection for non-prickly types with reduced latex. Bitterness and bolting tendency were reduced, and types with shortened internodes and large leaves were selected. Oilseed types have large, nonshattering seed.
Composition Leaves (Fresh weight)
In grammes per 100g weight of food:
Water: 92.9 Protein: 2.1 Carbohydrate: 3 Fibre: 0.5 Ash: 1.2
In milligrammes per 100g weight of food:
Calcium: 26 Phosphorus: 30 Iron: 0.7 Magnesium: 10 Sodium: 3 Potassium: 208 VitaminA: 2200 Niacin: 0.4 VitaminC: 15
Composition (100 grams edible product).
| Leaf | Butterhead | Crisphead | |
|---|---|---|---|
| Water | 94% | 95.1% | 95.5% |
| Calories | 18 | 14 | 13 |
| Protein | 1.3 g | 1.2 g | 0.9 g |
| Fat | 0.3 g | 0.2 g | 0.1 g |
| Total Carbohydrates | 3.5 g | 2.5 g | 2.9 g |
| Vitamin A | 1900 units | 970 units | 330 units |
| Vitamin C | 18 mg | 8 mg | 6 mg |
| Fiber | 0.7 g | 0.5 g | 0.5 g |
Reference:
1.Lettuce and Its legend.




