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Table 4 Pearson correlation coefficients for starch properties and digestion kinetics, of all analysed (non-sieved) starch samplesa

From: Amylopectin structure and crystallinity explains variation in digestion kinetics of starches across botanic sources in an in vitro pig model

  PC1 PC2 Amylose content Granule diameter Crystal content % A-type crystals Number of pores Side-chain length amylopectin, DP K
6–12 13–24 25–36 > 36 Short:Longb
PC1 X 0.00 −0.10 −0.85** − 0.48* 0.93** 0.74** 0.85** 0.84** 0.36 −0.82** 0.86** 0.67**
PC2   X 0.91** −0.46 0.41 −0.12 − 0.31 −0.39 − 0.43* −0.14 0.40 −0.39 − 0.17
Amylose content    X −0.24 0.18 −0.24 −0.36 − 0.48* −0.45* − 0.12 0.43 − 0.42 −0.37
Granule diameter     X 0.12 −0.74** −0.50* − 0.56** −0.48* − 0.13 0.48* − 0.51* −0.57**
Crystalline content      X −0.49* −0.31 − 0.45* −0.56** − 0.26 0.53* − 0.51* −0.25
% A-type crystals       X 0.57** 0.88** 0.84** 0.56** −0.88** 0.86** 0.81**
Number of pores        X 0.65** 0.69** −0.01 −0.59** 0.70** 0.33
Side chain length amylopectin, DP 6–12         X 0.93** 0.40 −0.92** 0.95** 0.81**
13–24          X 0.49* −0.98** 0.99** 0.60**
25–36           X −0.65** 0.49* 0.42
> 36            X −0.98** −0.68**
Short:long             X 0.65**
K              X
  1. a ** indicates a significant correlation (P ≤ 0.05), * indicates a tendency for a significant correlation (0.05 < P ≤ 0.10)
  2. b “Short” refers to amylopectin side-chains with DP 6–24 and “long” refers to amylopectin side-chains with DP> 36