[ÉªËvan pÊ²ÉªËtrovÊ²ÉªtÉ ËpavlÉf]. ; 26 September [ O.S. 14 September] 1849 â 27 February 1936) was a Russian physiologist known primarily for his work in classical conditioning. From his childhood days Pavlov demonstrated intellectual brilliance along with an unusual energy which he named the instinct for research.
Both pink and red grapefruit are a bit higher in calories than white grapefruit. One whole pink or red grapefruit, raw, has about 104 calories, while one whole white grapefruit, raw, has about 78, according to the USDA National Nutrient Database. These calorie counts are for a medium grapefruit.
Basic Nutritional Content. Half of a ruby red grapefruit provides 64 percent of the daily value for vitamin C, 28 percent of the DV for vitamin A and 8 percent of the DV for fiber. This serving only has 52 calories, most of which come from carbohydrates, as a grapefruit only contains 0.9 gram of protein and 0.2 gram of fat.