Grapefruit Juice
Grapefruit juice differs slightly from orange juice in its nutrient profile. An 8 oz serving of grapefruit juice contains fewer than 100 cal and has the same amount of vitamin C as orange juice (72 mg, 120% of Daily Value).
One serving also provides approx 300 mg of potassium.
Grapefruit juice contains lower concentration of the B vitamin folate, thiamin and niacin than does orange juice.
Many compounds have been proposed as active components in grapefruit juice, including both flavonoids (naringenin and naringin) and nonflavonoids (6’, 7’-dihydroxybergamottin).
The principal flavonoid in grapefruit juice is the flavanone glycoside naringin.
Red grapefruit juice also contains trace elements of the carotenoid lycopene. Lycopene has the greatest single oxygen quenching capacity (in vitro) of the dietary carotenoids.
Grapefruit Juice
