Boston Lettuce
Description
Boston lettuce, a green, leafy vegetable also known as butterhead lettuce, used primarily in salads. It has soft flexible leaves and a smooth taste. It typically is softer and lighter than iceberg lettuce with thinner, less-prominent veins in its leaves. A good source of roughage, vitamin A and potassium.
Available year-round with peak season November through March.
Caloric Content
| 1 | |
| Calories: | 8 |
| Protein: | .7 gm |
| Carbohydrates: | 1.4 gm |
| Fiber: | .25 gm |
| Total fats: | .1 gm |
| Saturated fats: | - gm |
| Unsaturated fats: | - gm |
| Cholesterol: | - mg |
1. 1 cup, 55 grams
Vitamin Content
| 1 | USRDA | |
| Vitamin A: | 530 | 5000 IU |
| Thiamine: | .03 | 1.7 mg |
| Vitamin B-2: | .03 | 1.7 mg |
| Vitamin B-6: | .028 | 2.0 mg |
| Vitamin B-12: | 0 | 6 mcg |
| Biotin: | .35 | 300 mcg |
| Niacin: | .2 | 20 mg |
| Pantothenic Acid: | .1 | 10 mg |
| Folic acid: | .02 | 400 mcg |
| Vitamin C: | 4 | 60 mg |
| Vitamin E: | .22 | 30 IU |
1. 1 cup, 55 grams
Mineral Content
| 1 | USRDA | |
| Calcium: | 19 | 1000 mg |
| Copper: | .08 | 2 mg |
| Iron: | 1.1 | 18 mg |
| Magnesium: | 5 | 400 mg |
| Manganese: | .4 | n/a mg |
| Phosphorus: | 14 | 1000 mg |
| Potassium: | 145 | n/a mg |
| Selenium: | - | n/a mcg |
| Sodium: | 5 | n/a mg |
| Zinc: | .3 | 15 mg |
1. 1 cup, 55 grams
Amino Acid Content
| 1 | |
| Tryptophan: | - gm |
| Threonine: | - gm |
| Isoleucine: | - gm |
| Leucine: | - gm |
| Lysine: | - gm |
| Methionine: | - gm |
| Cysteine: | - gm |
| Phenylalanine: | - gm |
| Tyrosine: | - gm |
| Valine: | - gm |
| Arginine: | - gm |
| Histidine: | - gm |
| Alanine: | - gm |
| Aspartic acid: | - gm |
| Glutamic acid: | - gm |
| Glycine: | - gm |
| Proline: | - gm |
| Serine: | - gm |
1. 1 cup, 55 grams
References
Kirschmann, John D. Nutrition Almanac: Nutrition Search. McGraw-Hill: New York. 1984.
Produce Availability & Merchandising Guide. The Packer. 1989.
United States Department of Agriculture. Composition of Foods: Vegetables and Vegetable Products-Raw-Processed-Prepared. Washington D.C. 1984.
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