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Carbohydrate availability of arroz caldo with lambda-carrageenan
B D Dumelod1, R P Ramirez, C L Tiangson
1Department of Food Science and Nutrition, College of Home Economics, University of the Philippines, Diliman, Quezon City, Philippines.
International Journal of Food Sciences and Nutrition
|March 17, 2000
Summary
Adding carrageenan, a soluble fiber from seaweed, to arroz caldo significantly lowered postprandial glucose levels in normal subjects. This dietary fiber may help manage metabolic conditions like diabetes.
Area of Science:
- Nutritional Science
- Human Physiology
- Food Science
Background:
- Total carbohydrate content comprises sugars, starches, and dietary fiber (soluble and insoluble).
- Soluble fiber intake can mitigate postprandial glucose spikes by delaying glucose absorption.
- Carrageenan, a seaweed extract, is recognized as a significant source of soluble dietary fiber.
Purpose of the Study:
- To investigate the impact of incorporating carrageenan into arroz caldo on carbohydrate availability.
- To assess the effect of carrageenan-enriched arroz caldo on postprandial blood glucose levels in healthy individuals.
Main Methods:
- Preparation of control and experimental arroz caldo samples with varying total dietary fiber (TDF) content.
- Proximate analysis of samples to determine nutritional composition.
- A randomized crossover study involving ten fasting normal subjects consuming standardized portions of arroz caldo.
- Monitoring of postprandial blood glucose levels at 15, 30, 45, 60, and 90 minutes post-ingestion.
Main Results:
- Experimental arroz caldo contained significantly higher TDF (2.03%) compared to the control (0.68%).
- Subjects consuming carrageenan-enriched arroz caldo exhibited significantly lower postprandial glucose responses at multiple time points (15, 30, 45, 90 min; P < 0.05).
- The mean glucose area under the curve was substantially reduced in the experimental group (69.22 +/- 32.94) versus the control group (147.29 +/- 53.34; P < 0.01).
Conclusions:
- Carrageenan incorporation into arroz caldo effectively reduces postprandial glycaemic response in normal subjects.
- The observed hypoglycaemic effect suggests potential therapeutic applications for carrageenan in managing metabolic disorders.
- Dietary soluble fiber, such as carrageenan, plays a crucial role in modulating glucose metabolism and may aid in diabetes prevention and management.