Pole sitao, Vigna unguiculata subsp. sesquipedalis, are a good source of protein, vitamin A, thiamin, riboflavin, iron, phosphorus, and potassium, and a very good source for vitamin C, folate, magnesium, and manganese.

In a serving size of 100 grams of yardlong beans there are 47 calories, 0 grams of total fat, 0 mg cholesterol, 4 mg sodium (0% daily value), 8 grams of total carbohydrates (2% daily value), and 3 grams of protein (5% daily value). There is also 17% DV vitamin A, 2% DV iron, 31% DV vitamin C, and 5% DV calcium. (Percent daily values are based on a 2000 calorie diet. Individual daily values may be higher or lower depending on individual calorie needs.)

Nutritive Value of Sitaw per 100g in table

Nutrient                                   Amount

Water                                       89.0 g
Protein                                     3.0 g
Fat                                           0.5 g
Carbohydrates                          5.2 g
Fiber                                        1.3 g
Calcium                                  64.0 mg
Phosphorous                           54.0 mg.
Iron                                          1.3 mg.
Vitamin A                               167.0 IU
Vitamin B1                              0.07 mg
Vitamin C                               28.0 mg

info source: department of agriculture