Fig. 3

Correlation analysis between the phytochemicals and antioxidants: the heat map of the different parameters generated by using the MetaboAnalyst 6.0 program (https://new.metaboanalyst.ca) portrays high to low correlation on the basis of correlation coefficient ranging from − 0.9 to 1. Shades of red color represent high correlation whereas the blue colors denote lowly correlated parameters.