Table 2. The n and K value of BSA with emodin, HEI1, HEI2, and HEI3.

Variable	Emodin	HEI1	HEI2	HEI3
K
298	1.23×104	3.26×105	1.93×107	5.75×106
310	8.67×103	2.45×105	7.87×105	4.88×106
n	0.89	1.10	1.39	1.27

BSA, bovine serum albumin; HEI1, 2-iodioemodin; HEI2, 2,4-diiodoemodin; HEI3, 2,4,5-triiodoemodin.