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Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions
Published on: October 2, 2018
Dietary fiber in brewed coffee.
M Elena Díaz-Rubio1, Fulgencio Saura-Calixto
1Departament of Metabolism and Nutrition, Instituto del Frío, Consejo Superior de Investigaciones Científicas, Madrid, Spain.
Journal of Agricultural and Food Chemistry
|February 14, 2007
Summary
Brewed coffee is a significant source of soluble dietary fiber and beneficial antioxidant phenolics. This research quantines the fiber content in popular coffee types, offering new insights into coffee
Area of Science:
- Food Science
- Nutritional Chemistry
Background:
- Coffee beans contain nondigestible polysaccharides (dietary fiber).
- Limited literature exists on the dietary fiber content of brewed coffee.
- Dietary fiber may transfer from beans to brewed coffee.
Purpose of the Study:
- To quantify the soluble dietary fiber content in brewed coffee.
- To analyze the associated antioxidant phenolics in coffee's dietary fiber.
- To compare fiber content across common brewing methods.
Main Methods:
- Applied an enzymatic treatment plus dialysis method to determine dietary fiber.
- Analyzed coffees brewed using espresso, filter, and soluble methods.
- Quantified soluble dietary fiber and associated phenolic compounds.
Main Results:
- Brewed coffee contains a significant amount of soluble dietary fiber (0.47-0.75 g/100 mL).
- Coffee's dietary fiber is rich in antioxidant phenolics (8.7-10.5 mg/100 mL).
- Soluble dietary fiber content in coffee exceeds that of other common beverages.
Conclusions:
- Brewed coffee is a notable source of soluble dietary fiber and antioxidant phenolics.
- The findings provide valuable data on the nutritional composition of brewed coffee.
- Further research into coffee's health benefits related to its fiber and phenolic content is warranted.
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