Table 1.

Total phenol and flavonoid contents, EC₅₀ values of ACE inhibition of grapefruit and shaddock juices.

	Grapefruit	Shaddock
Total phenol (mg GAE/L)	134.7 ± 2.8a	100.3 ± 2.8b
Total flavonoid (mg QE/L)	35.0 ± 0.3a	29.7 ± 0.4b
ACE activity inhibition (mL/L)	2.51 ± 0.05b	2.24 ± 0.06a

Data are presented as mean ± standard deviation, n = 3. Data with the same superscript number on the same row are not significantly (p < 0.05) different.

ACE = angiotensin-I-converting enzyme; EC₅₀ = half maximal effective concentration; GAE = gallic acid equivalent; QE = quercetin equivalent.