76 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Tab'.e 1. Effect of Methylcellulose on Emulsion Properties Olive Oi! Emulsions Median Dvo , gm (S.D), n:3 Flow Parameter, q=, n=3 Concentration of Methylcellulose 4000, %w/w Emulsion Vs MC solution 0.00 0.29 0.88 1.47 Slope r 2 p-Value SE initial 5.26 (2 8) 3.45 (1.9) 3.38 (1.7) 3.91 (1.6) 22.11 0.991 0.0016 6 month 5.16 (3.4) 3.45 (2.0) 3.02 (1.9) 3.28 (2.3) UE1 initiai 10.47 (4.4) 5.55 (2.5) 5.08 (2.3) 3.91 (22) 18.04 0.982 0.3334 6 mcnth 13.62 (6 2) 4.94 (2.9) 5.24 (2.4) 3.59 (1.9) UE2 initial 8.45 (4.1) 2.66 (1.6) 2.19 (1.5) 2.17 (1.6) 26.38 0.999 0.0001 6 month 7.91 (4.6) 2.98 (1.6) 2.46 (1.5) 2.03 (1.3) UE3 initial 8.97 (4.4) 5.80 (2.8) 5.68 (2.6) 5.10 (2.1) 16.59 0.979 Ref. slope 6 month 7.91 (4.6) 2.98 (1.6) 2.46 (1.5) 203 (1.3) Mineral Oil Emulsions initial Median Dvol, Fm (S.D), n=3 SE 1.97 (1.6) 1.48 (1.3) 1.84 (1.3) UE1 4.18 (1.9) 3.10 (1.3) 3.40 (1.3) UE2 2.42 (1.7) 2.66 (1.3) 2.75 (1.4) UE3 5.15 (2.3) 4.12 (1.5) 3 26 (1.4) Flow Parameter, rim, , n=3 1.60 (1.3) 18.24 0.998 0.3497 3.48 (1.3) 17.75 0.986 0.5432 2.73 (1.3) 22.50 0.999 0.0011 1.75 (1.1) 16.87 0.965 Ref. slope Reference slope Statistical significance defined at a p-Value _ 0 05. References 1Davis, S.S. and Smith, A., In Smith, A.L. (Eds.), Theory and Practice of Emulsion Technology, Academic Press, New York, pp. 325-346 (1976). 2Becher, P., J. Colloid Sci., 18, 665-673 (1963). 3Zatz, J:L. and Ip, B.K., J. Soc. Cosmet. Chem., 37, 329-350 (1986). 4Niebergall, P.J., Schnaare, R.L. and Sugita, E.T., J. Pharm. Sci., 60, 1393-1402 (1971). 5Tadros, Th. F., Colloids Surf., 91, 39-55 (1994).