Fig. 2

TLC based antioxidant screening of the active extracts. Mobile phase for TLC development was 10% methanol in DCM. The purple color was from DPPH and antioxidant active fractions showed reduced in purple color to yellow. The darkness of color spots indicated the potential of antioxidant activity, the size of color spot indicated the content of antioxidant active compounds in the extracts. W- methanol soluble water fraction, D- DCM fractions of lichen extracts. The sample in the TLC plate is as follows:1, SAR1W; 2, SAR9W; 3, SAR11W; 4, SAR13W; 5, SAR15W; 6, SAR18W; 7, SAR27W; 8, GHAN5W; 9, GHAN8W; 10, GHAN9W; 11, GHAN13W; 12, JOM6W; 13, DAN1W; 14, DAN6W; 15, DAN11W; 16, CHA8W; 17, SAR1D; 18, SAR5D; 19, SAR6D; 20, SAR12D; 21, SAR23D; 22, SAR24D; 23, SAR25D; 24, SAR26D; 25, GHAN5D; 26, GHAN8D; 27, GHAN15D; 28, JOM14D; 29, JOM15D; 23, JOM16D; 31, DAN1D; 32, DAN3D; 33, DAN6D; 34, DAN8D; 35, DAN11D; 36, CHA1D; 37, CHA8D