Table 6.

Colour analysis of double encapsulated C-PC powder samples (resuspended) during storage

	1st day	8th day	15th day	22nd day	6 months	1st day	8 th day	15th day	22nd day	6 months	1st day	8th day	15th day	22nd day	6 months
Sample	L*	L*	L*	L*	L*	a*	a*	a*	a*	a*	b*	b*	b*	b*	b*
FDC	39.39	37.73  ± 0.71	31.95  ± 0.91	30.02  ± 0.67	−	−16.3	−15.79  ± 0.41	−14.18  ± 0.81	−12.57  ± 0.73	–	−6.99  ± 0.71	−6.76  ± 0.56	−6.19  ± 0.58	−5.67  ± 0.62	–
FD P/S ATPS	78.2  ± 1.12	70.21  ± 0.75	68.34  ± 1.1	66.47  ± 0.59	64 ± 1.71	−27.5 ± 1.20	−27.11  ± 0.63	−27.05  ± 1.7	−26.21  ± 1.1	−4.55  ± 0.75	−21.7 ± 2.1	−17.55  ± 0.98	−15.47  ± 0.61	−13.28  ± 0.98	0.85  ± 0.21
FD P/P ATPS	95.00  ± 2.0	90.7  ± 0.33	88.59  ± 0.97	85.07  ± 0.95	83 ± 1.02	−7.15 ± 0.89	−7.11 ± 0.74	−6.99  ± 0.62	−6.42  ± 0.47	−5.76  ± 0.85	−6.03 ± 1.02	−5.98  ± 0.47	−4.03  ± 0.45	−3.84  ± 0.79	−5.06  ± 0.3
SD P/S ATPS	80.24 ± 3.5	78.5  ± 0.62	76.47  ± 0.88	74.03  ± 0.87	62.07 ± 1.21	−25.14 ± 2.0	−24.08  ± 0.8	−24.02  ± 0.91	−23.23  ± 0.71	−2.06  ± 0.42	−17.89 ± 1.2	−10.9  ± 0.54	−5.16  ± 0.28	−2.91  ± 0.35	−0.98  ± 0.41
SD P/P ATPS	94.11 ± 3.62	88.45  ± 0.84	85.52  ± 0.64	82.13  ± 0.79	75.08 ± 0.98	−8.64 ± 0.47	−8.5  ± 0.52	−8.35  ± 0.54	−8.06  ± 0.53	−2.2  ± 0.29	−6.02 ± 0.98	−6.00  ± 0.81	−5.96  ± 0.43	−5.88  ± 0.86	−1.56  ± 0.12

_{Values are averages±standard deviation from three replicate (n=3) analyses}

FDC freeze dried w/o carrier material, FD P/S freeze dried polymer/salt aqueous two phase system, FD P/P freeze dried polymer/polymer, SD P/S spray dried polymer/salt; SD P/P spray dried polymer/polymer