Mean particle size, PDI, zeta-potential, AP of BBPI and BBPI compounds^a.

	Mean particle size (nm)	PDI	Zeta-potential (mV)	AP (%)
BBPI	291.30 ± 0.56d	0.220 ± 0.007b	−24.47 ± 0.23b	9.52 ± 0.29a
BBPI–EGCG	242.17 ± 2.62b	0.186 ± 0.011a	−30.90 ± 0.26d	18.11 ± 0.57c
BBPI-G	282.73 ± 0.35c	0.187 ± 0.009a	−23.20 ± 0.17a	10.53 ± 0.38b
BBPI-G–EGCG	229.67 ± 2.87a	0.172 ± 0.008a	−29.47 ± 0.61c	20.61 ± 0.76d

^aa–d represents significant difference in the same column (p < 0.05).