Simultaneous Determination of Retinols and Tocols in Egg and Milk Products Based on RP-HPLC Linked with Fluorescent and Photodiode Array

Table 3

Loss rate of target components in different experimental conditions (%).

Towards	South			North			Dark room
Placement	By the window	By the corridor countertop	By the corridor countertop	By the window	By the corridor countertop	By the corridor countertop	Red light	Red light	LED light	LED light
Illuminance (LUX)	1496–3060	565–710	565–710	1490–1800	230–310	230–310	20	20	70	70
Table color	Black	Black	White	Black	Black	White	Black	White	Black	White
9-cis retinol	78.48	37.47	18.90	82.43	5.89	2.11	4.97	3.48	6.28	1.78
11-cis retinol	100.00	52.11	34.31	100.00	18.29	4.52	15.00	3.48	15.00	2.56
13-cis retinol	80.04	42.73	27.65	78.02	7.99	4.91	12.40	2.16	10.14	1.06
All-trans retinol	76.74	28.26	18.10	73.83	4.25	1.28	3.96	2.16	3.96	1.96
α-Tocopherol	2.29	2.27	3.02	3.74	3.93	4.86	3.21	2.68	2.22	2.29
β-Tocopherol	2.71	2.06	2.31	2.48	2.26	2.48	2.36	2.61	2.68	3.12
γ-Tocopherol	2.35	2.00	2.14	2.36	2.40	2.79	3.46	2.96	2.72	3.19
δ-Tocopherol	2.62	1.85	2.50	1.92	1.63	2.81	2.09	2.63	2.28	2.21
α-Tocotrienol	2.84	2.33	3.22	3.55	1.99	4.72	3.12	3.96	3.13	3.77
β-Tocotrienol	2.18	2.46	2.52	2.59	2.36	3.10	1.66	2.81	2.41	2.79
γ-Tocotrienol	2.44	1.82	2.60	3.04	2.28	3.18	1.21	3.24	3.01	3.27
δ-Tocotrienol	2.27	2.04	2.12	2.76	2.30	2.57	4.46	2.67	2.19	2.27