PMID- 22455145 OWN - NLM STAT- MEDLINE DCOM- 20120806 LR - 20131121 IS - 1672-173X (Print) IS - 1672-173X (Linking) VI - 43 IP - 1 DP - 2012 Jan TI - [Determination of canthaxanthin and astaxanthin in egg yolks by reversed phase high performance liquid chromatography with diode array detection]. PG - 113-7 AB - OBJECTIVE: A method using reversed phase high performance liquid chromatography (RP-HPLC) coupled with diode array detector (DAD) was developed for the simultaneous determination of canthaxanthin and astaxanthin in egg yolks. METHODS: Samples were extracted with acetonitrile in ultrasonic bath for 20 minutes and then purified by freezing-lipid filtration and solid phase extraction (SPE). After being vaporized to dryness by nitrogen blowing and made up to volume with methanol, the extract solution was chromatographically separated in C18 column with a unitary mobile phase consisting of acetonitrile. The proposed method was validated in terms of linearity, precision, accuracy, and limit of detection (LOD). RESULT: Regression analysis revealed a good linearity between peak area of each analyte and its concentration (r > or = 0.998). The intra- and inter-day relative standard deviations (RSDs) were less than 3.6% and 5.2%, respectively. LODs of canthaxanthin and astaxanthin were 0.035 and 0.027 microg/mL (S/N = 3). The average recoveries of canthaxanthin and astaxanthin were 91.5% and 88.7%. CONCLUSION: The proposed method is simple, fast and easy to apply. FAU - He, Kang-Hao AU - He KH AD - Department of Sanitary Technology, West China Public Health School, Sichuan University, Chengdu 610041, China. FAU - Zou, Xiao-Li AU - Zou XL FAU - Liu, Xiang AU - Liu X FAU - Zeng, Hong-Yan AU - Zeng HY LA - chi PT - English Abstract PT - Journal Article PL - China TA - Sichuan Da Xue Xue Bao Yi Xue Ban JT - Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition JID - 101162609 RN - 0 (Food Coloring Agents) RN - 0 (Xanthophylls) RN - 4C3C6403MU (Canthaxanthin) RN - 8XPW32PR7I (astaxanthine) SB - IM MH - Animals MH - Canthaxanthin/*analysis MH - Chromatography, High Pressure Liquid/methods MH - Chromatography, Reverse-Phase/methods MH - Egg Yolk/*chemistry MH - Food Coloring Agents/*analysis MH - Food Contamination/*analysis MH - Xanthophylls/analysis EDAT- 2012/03/30 06:00 MHDA- 2012/08/07 06:00 CRDT- 2012/03/30 06:00 PHST- 2012/03/30 06:00 [entrez] PHST- 2012/03/30 06:00 [pubmed] PHST- 2012/08/07 06:00 [medline] PST - ppublish SO - Sichuan Da Xue Xue Bao Yi Xue Ban. 2012 Jan;43(1):113-7.