Pasinee Chartchuathaicharoen. Glycemic indexes of tangerine banana papaya rambutan pomelo and rose apple and acute responses of serum lipid and blood viscosity in DM type 2 patients. Master's Degree(Nutrition). Mahidol University. : Mahidol University, 2006.
Glycemic indexes of tangerine banana papaya rambutan pomelo and rose apple and acute responses of serum lipid and blood viscosity in DM type 2 patients
Abstract:
Dietary control is necessary for diabetic patients to reduce the risk of
complications. The consumption of fruits to substitute for desserts has been encouraged
because of the resulting increased intake of fiber, micronutrient, and antioxidants.
However, fruits contain various types and amounts of carbohydrate which variously affect
blood glucose, and lipids. This study determined the acute responses of blood glucose,
lipids and viscosity after ingestion of various amounts and types of fruits and also their
glycemic indexes.
Sixteen DM type 2 patients were randomly divided into 2 groups to consume
different test fruits. The test fruits consisted of 30 g and 50 g CHO of tangerine, rambutan,
pomelo, rose apple, banana (Kai variety), and papaya, and 50 g glucose drink. All subjects
underwent 6 tests of fruit consumption and a 50 g glucose drink. On the test day, each
subject underwent an overnight fast and consumed one kind of test fruits. Baseline and
postprandial blood samples were collected to determine plasma glucose, serum lipids and
blood viscosity.
The results showed that bananas gave the lowest plasma glucose response curve
in 30 g and 50 g CHO. The mean percentage change of plasma glucose and area under the
glucose response curve (AUC) after eating 30 g CHO of tangerines tended to be higher
than other fruits. Comparing the different amounts of CHO, a significant difference of
AUC was seen in rambutan, pomelo, banana, and papaya. Glycemic indexes of banana,
tangerine, papaya, rambutan, rose apple, and pomelo were 26, 30, 38, 47, 50, and 59,
respectively. The mean triglyceride levels at 5 h after ingestion of all kinds of fruits tended
to be increased from baseline especially both doses of tangerine, rambutan, and pomelo
and 50 g CHO of banana. Total cholesterol levels did not change after ingestion of
different amounts and kinds of fruits. The HDL-C levels were significantly decreased after
ingestion of both doses of pomelo and 50 g CHO of rambutan. The LDL-C levels were
significantly decreased after ingestion of 50 g CHO of rambutan, papaya, and pomelo. The
percentage reduction of LDL-C was significantly larger after the 50 g CHO of pomelo
than the 30 g CHO dose. There was no significant increase of whole blood viscosity at 5
hr after ingestion of different amounts of these fruits.
It can be mentioned that hyperlipidemic type 2 DM may ingest either three
servings (50 g CHO) of rose apple or banana or papaya at a time without causing
deleterious effect on blood glucose, serum lipids, and whole blood viscosity. However,
high doses (50 g CHO) of tangerine, rambutan, and pomelo may produce hyperglycemia
and dyslipidemia.