The amount of phytate and total dietary fiber of 6 popular tropical fruits eaten by diabetic patient residing in Bangkok were studied. They were dragon fruit, durian, guava, longan, mango, and pineapple. Fruit containing the highest content of total dietary fiber was guava which had about 2.7%. Longan contained the lowest fiber content equal to 0.19%. The highest content of phytate was found in pineapple about 0.09% and the lowest content was in longan about 0.037%. It was noticed that longan contained the lowest total dietary fiber and the lowest phytate content.

Keywords: Phytate, Fiber, Fruit