Fig. 5.

DPPH radical scavenging activity (a) and FRAP (b) of apple juices supplemented with different concentrations of shallot and heating. DPPH radical scavenging and FRAP are represented by using representative data; (n = 3). The error bars are indicated as ± standard deviation; (n = 9). Statistically significant (p < 0.05) differences are showed by different letters above the bars. Different capital letters present significant differences among the shallot supplementations at a given heat/unheat treatments, while different lowercase letters present significant differences between heat and unheat treatments for similar shallot concentration