1 plate of romaine lettuce (124.0 grams of edible portion) contains 17 calories and requires 11.7 minutes of walking to consume. Each 100 grams of this food contains: 0.10 grams of fat; 0.02 grams of riboflavin; 36.50 grams of sodium; 0.60 grams of fiber; 48.00 grams of phosphorus; 1.00 grams of protein; and 0.90 milligrams of iron.

Extended information

Lettuce (scientific name: Lactuca sativa L.var. angustanaIrish.), also known as lettuce, lettuce, lettuce species of the genus Lettuce, family Asteraceae, can form a fleshy tender stems of the varieties of plants, 2012 herb. Alias stem lettuce, lettuce shoots, green shoots, lettuce. Production period: January-April. Lettuce originates from the Mediterranean coast and was introduced to China around the fifth century.

The aboveground stems are edible, with whitish-green stem bark, crisp stem flesh, bright green young stems, and whitish-green after maturity. Mainly edible fleshy young stems, can be eaten raw, cold, fried, dried or pickled, young leaves can also be eaten. Stems and leaves contain lettuce pigment, containing lettuce pigment (C11H14O4 or C22H36O7). It is bitter in flavor and has analgesic effect. Lettuce is highly adaptable, can be cultivated in spring and fall or overwintering, with spring cultivation and summer harvest.

Baidu Encyclopedia - Lettuce