Megazyme™ Rapid Integrated Total Dietary Fiber Assay Kit
Enzymatic analysis for the quantitative determination of total dietary fiber in foodstuffs according to modern AOAC. The method is optimized for the accurate analysis of resistant starch and complex carbohydrates.
Description
The Megazyme™ Rapid Integrated Total Dietary Fiber Assay Kit is intended for the quantitative analysis of total dietary fiber in food. The method is based on an integrated enzymatic process in which starch and protein are broken down under controlled conditions that simulate digestion in the small intestine.
The analysis includes an extended incubation period (4 hours), which enables accurate quantification of resistant starch and non-degradable carbohydrates. This is particularly important when analyzing modern food products, where traditional methods may yield inaccurate results.
The method has been developed to comply with current definitions of dietary fiber and minimizes the formation of analytical artifacts compared to older AOAC.
The kit has been validated in accordance with AOAC .16, AOAC .01, AACC 32-60.01, and ICC 185.
Features
- Integrated enzymatic analysis of total dietary fiber
- Simulates digestion in the small intestine (4-hour incubation)
- Accurate quantification of resistant starch (including RS4)
- Minimizes artifacts from older AOAC methods
- Designed for modern food matrices
- AOAC .16 and 2022.01 validated method
How to use the product:
Method 1

Method 2

More information
Instructions
Instructions (PDF, 253 KB)
Calculation template (PDF, 806 KB)
Product sheets and guides
Dietary Fiber Analysis Guide (PDF, 386 KB)
Comparison of Methods (PDF, 78kB)
Industries Overview Flyer (PDF, 4MB)
Food and Beverages Brochure (PDF, 2MB)
Enzymatic Assay Kit Workflow Flyer (PDF, 143 KB)
Megazyme(PDF, 494 KB)
| Parameter | Total dietary fiber (TDF) |
|---|---|
| Result type | Quantitative |
| Method | Enzymatic / gravimetric + HPLC |
| Approvals | AOAC .16. ICC 185 |
| Analysis time | ~4 hours of incubation (total ~2 days) |
| Detection range | 0.5–100% of the sample weight |
| Number | |
| Application | Food, ingredients, animal feed |
| Other specifications | Simulates in vivo digestion in the small intestine. Includes resistant starch (RS) and non-digestible oligosaccharides (NDO). Combination of enzymatic hydrolysis, gravimetric determination, and HPLC analysis. |
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