ORAC Assay for Hydrophilic Extracts (ORAC-H). The ORAC assay for
the hydrophilic extract of tomato (ORAC-H) was conducted according
to Ou et al.36 The protocols were the same as those described above for
the ORAC-L assay except that a 75 mM phosphate buffer (pH 7.4)
instead of 7% (w/v) RMCD is used.