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. 2001 Dec 21;112(4):495–504. doi: 10.1034/j.1399-3054.2001.1120406.x

Table 2.

Regression parameters, within the two regions of water contents (absence/presence of freezable water in seed tissues), of the relationship between water content and enthalpy of melting transitions of endosperm samples of seven coffee species, proportion of variance explained by the regression, r2, and probability P of significance of each parameter.

Linear regression at low water contents Linear regression at high water contents Heat of fusion of freezable
Y value at origin Slope (J g−1 H2O) r2 Y value at origin Slope (J g−1 H2O) r2 water (J g−1 H2O)
C. arabica 8.0 10.3 0.03 −41.8 245.3 0.92 235.0
P 0.0031 0.4448 0.0003 0.0000
C. canephora 4.7 17.5 0.29 −76.8 310.9 0.92 293.4
P 0.0040 0.0486 0.0000 0.0000
C. eugenioides 7.3 18.3 0.78 −68.1 307.5 0.98 289.2
P 0.0009 0.0194 0.0025 0.0001
C. liberica 6.6 2.4 0.00 −51.3 227.4 0.90 225.0
P 0.0335 0.8900 0.0000 0.0000
C. pseudozanguebariae 13.2 18.0 0.28 −11.2 190.9 0.84 172.9
P 0.0000 0.0298 0.0147 0.0000
C. racemosa 8.2 −0.4 0.00 −60.5 286.6 0.89 287.0
P 0.0099 0.9734 0.0004 0.0000
C. sessiliflora 14.4 16.2 0.39 −30.5 266.2 0.97 250.0
P 0.0000 0.1313 0.0003 0.0000