Table 5. Total polyphenol and flavonoids contents in plum juice and vinegar

	Sample
	Plum juice	Plum vinegar	Apple vinegar¹⁾
Total polyphenol (μg GAE/g)	130.23±0.71^2)a3)	118.66±0.32^b	26.40±0.48^c
Total flavonoid (μg QE/g)	346.43±10.83^a	38.93±6.38^b	4.14±1.59^c

Commercial apple vinegar was used as a control for antioxidant activity comparison.
All values are mean±SD (n=3).
Means with different superscript letters (^a-c) in the same row are significantly different at p<0.05 by Duncan’s multiple range test.