Table 1 

Kinetics of digestion^{1 }of the resistant starch assay for Wt and sbe1a mutant starch^{2} 

Starch 
y_{0}(%) 
S_{1}(%) 
k_{1 }(min^{1}) 
S_{2}(%) 
k_{2 }(min^{1}) 


Wt 
5.4 ± 2.3^{a} 
85.9 ± 3.5^{b} 
1.4 ± 0.1^{a }(×10^{2}) 
17.9 ± 5.4^{a} 
0.9 ± 0.2^{a }(×10^{3}) 
sbe1a 
13.7 ± 2.8^{b} 
59.8 ± 3.0^{a} 
1.8 ± 0.1^{b }(×10^{2}) 
24.3 ± 2.4^{a} 
3.0 ± 1.1^{b }(×10^{3}) 


^{1 }Kinetic parameters are obtained from model fit using the double exponential decay equation: where y is % NDS, x is the time, y_{0 }is the yvalue that the model asymptotically approaches, S_{1 }and S_{2 }are the concentrations of the two different substrate components, and k_{1 }and k_{2 }are the reaction rate constants for the decay of the two different components.^{2 }Values are expressed as mean ± SD for three biological replications. Values for each biological replication were obtained from fit of combined data from two independent digestions. Significant differences (p < 0.05) in the same column, as determined by oneway ANOVA analysis, are indicated by different superscripts. 

Xia et al. BMC Plant Biology 2011 11:95 doi:10.1186/147122291195 