Rosmarinic Acid-Rich Extracts of Summer Savory (Satureja hortensis L.) Protect Jurkat T Cells against Oxidative Stress

Table 2

Effects of S. hortensis extracts on the viability of Jurkat cells in the presence or absence of hydrogen peroxide.

	Hydrogen peroxide concentration, 𝜇M
	0	25	50
	MTT test results, A570
No additives (control)	0.69±0.02	0.36±0.01	0.22±0.01
Chloroform extract	0.63±0.02	0.37±0.01	0.24±0.03
Ethyl acetate extract	0.58±0.05	0.47±0.03	0.42±0.03^∗
Ethanolic extract	0.74±0.03^∗	0.56±0.05^∗	0.46±0.03^∗
Aqueous extract	0.61±0.01	0.68±0.04^∗	0.67±0.02^∗
Rosmarinic acid fraction	0.75±0.04^∗	0.62±0.03^∗	0.42±0.04^∗

Values represent averages of five replications ± standard deviations. Values marked with the asterisk are significantly different from the control in the same column at 𝑃≤0.05, according to Student’s 𝑡-test.