What question did this study set out to answer?

To evaluate the interlaboratory repeatability and reproducibility of an enzymatic digestion method for measuring resistant starch across diverse plant foods and commercial starches.

September 1, 2002Journal of AOAC InternationalOpen Access

Measurement of Resistant Starch by Enzymatic Digestion in Starch and Selected Plant Materials: Collaborative Study

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To evaluate the interlaboratory repeatability and reproducibility of an enzymatic digestion method for measuring resistant starch across diverse plant foods and commercial starches.
Thirty-seven laboratories analyzed 8 pairs of blind duplicate samples of plant foods (including cooked kidney beans, green banana, and corn flakes) and commercial starches.
Samples evaluated contained resistant starch levels ranging from 0.6% to 64% on a fresh weight basis, quantified using an enzymatic digestion procedure optimized to reflect in vivo digestion.
For matrices containing ≥2% resistant starch, the repeatability relative standard deviation (RSDr) ranged from 1.97% to 4.2%, and the reproducibility relative standard deviation (RSDR) ranged from 4.58% to 10.9%.
The method demonstrated an effective applicability range of 2% to 64% resistant starch, but proved unsuitable for matrices with <1% resistant starch (such as regular maize starch at 0.6% RS) due to unacceptably high variation.

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Implication

Collaborative interlaboratory study demonstrates reliable measurement of resistant starch in starches and plant foods, highlighting an operational range between 2% and 64%.

Cite This Study

McCleary et al. (2002) studied this question.

synapsesocial.com/papers/6a954524cd304312aafa7535 https://doi.org/10.1093/jaoac/85.5.1103

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Implication

Collaborative interlaboratory study demonstrates reliable measurement of resistant starch in starches and plant foods, highlighting an operational range between 2% and 64%.

Measurement of Resistant Starch by Enzymatic Digestion in Starch and Selected Plant Materials: Collaborative Study

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Discussion

Implication

Cite This Study

Measurement of Resistant Starch by Enzymatic Digestion in Starch and Selected Plant Materials: Collaborative Study

Key Points

Discussion

Implication

Cite This Study

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