Orange Juice Guide

Orange juice is a source of vitamin C (ascorbic acid), potassium, thiamine, Phosphorus G, folic acid (Vitamin B9) and vitamin B6. One 8-ounce glass of 100 percent orange juice counts as almost 25 percent of the USDA-recommended daily fruit and vegetable servings, based on a 2,000-calorie diet. Research shows orange juice is more nutrient dense than many commonly consumed 100 percent fruit juices, such as apple, grape, pineapple and prune.[1]

Citrus juices also contain flavonoids that are believed to have beneficial health effects. Orange juice containing pulp seems to be more nutritious than no-pulp varieties due to the flavonoids contained in the pulp.[2] If drunk on an empty stomach, orange juice can exacerbate present gastrointestinal conditions and/or cause mild and temporary stomach upset. Due to the citric acid, orange juice typically has a pH of 3.5.[3] Drinking or sipping orange juice can therefore cause erosion of the tooth enamel, otherwise known as 'acid erosion'. Some publications recommend using a straw when drinking orange juice so that the juice does not come into contact with the teeth.[4][not in citation given]...