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Table 3 Pearson’s correlation between color parameters and selected quality features in sweetpotato

From: Genotypic and environmental factors influence the proximate composition and quality attributes of sweetpotato (Ipomoea batatas L.)

Variable DMC TPC AC CF TSS Red Green
TP −0.55*       
AC −0.8*** 0.73*      
CF −0.46* 0.07 0.15     
TSS 0.63* −0.14 −0.49* −0.21    
Red −0.36 0.33 0.51* −0.29 −0.59*   
Green 0.16 −0.2 −0.05 −0.59* −0.44 0.76**  
Blue 0.55* −0.65* −0.59* −0.53* −0.03 0.13 0.68**
  1. DMC dry matter content, AC ash content, CF crude fiber, TPC total protein content, TSS total soluble solids
  2. Red, Green, and Blue correspond to pixel values from the RGB image analysis. ***(p < 0.0001), **(p < 0.001), *(p < 0.01)
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