Table 1. Effect of the Lipid to Stabilizer Ratio on the Particle Size, Polydispersity Index, and Zeta Potentials of the Formulated Bare SLNs.

				particle size/(d/nm)			PDI			zeta potential/(ζ/mV)
s. no.	lipid/mg	stabilizer/mg	ratio	CPT–GEL	CPT–POL	CPT–PLU	CPT–GEL	CPT–POL	CPT–PLU	CPT–GEL	CPT–POL	CPT–PLU
1	400	100	4:1	765 ± 61	811 ± 45	856 ± 65	0.521 ± 0.07	0.534 ± 0.04	0.573 ± 0.06	–36.6 ± 9.2	–33.9 ± 6.2	–28.4 ± 10.3
2	400	150	8:3	752 ± 50	583 ± 47	678 ± 69	0.523 ± 0.06	0.576 ± 0.04	0.611 ± 0.08	–32.7 ± 9.7	–28.1 ± 4.9	–31.3 ± 8.1
3	400	200	2:1	684 ± 53	424 ± 41	461 ± 58	0.499 ± 0.06	0.510 ± 007	0.598 ± 0.07	–25.1 ± 7.4	–23.5 ± 4.4	–25.2 ± 5.9
4	400	250	8:5	489 ± 39	416 ± 53	459 ± 45	0.513 ± 0.08	0.509 ± 0.05	0.541 ± 0.07	–22.8 ± 6.1	–22.9 ± 4.5	–24.9 ± 6.1
5	400	300	4:3	472 ± 36	397 ± 29	452 ± 52	0.415 ± 007	0.532 ± 0.05	0.546 ± 0.05	–21.0 ± 6.3	–22.3 ± 4.7	–23.2 ± 7.2
6	400	350	8:7	459 ± 42	373 ± 37	438 ± 44	0.447 ± 0.06	0.501 ± 0.03	0.578 ± 0.06	–18.6 ± 5.2	–21.9 ± 3.8	–22.2 ± 5.8
7	400	400	1:1	452 ± 33	369 ± 31	421 ± 39	0489 ± 0.05	0.475 ± 0.04	0.538 ± 0.04	–19.4 ± 7.1	–18.9 ± 4.2	–19.4 ± 4.9