PMID- 17373456 OWN - NLM STAT- MEDLINE DCOM- 20070606 LR - 20190729 IS - 1060-3271 (Print) IS - 1060-3271 (Linking) VI - 90 IP - 1 DP - 2007 Jan-Feb TI - Optimized determination method for trans-10-hydroxy-2-decenoic acid content in royal jelly by high-performance liquid chromatography with an internal standard. PG - 244-9 AB - An optimized reversed-phase high-performance liquid chromatography method was developed to detect the trans-10-hydroxy-2-decenoic acid (10-HDA) content in royal jelly cream and lyophilized powder. The sample was extracted using absolute ethanol. Chromatographic separation of 10-HDA and methyl 4-hydroxybenzoate as the internal standard was performed on a Nova-pak C18 column. The average recoveries were 95.0-99.2% (n = 5) with relative standard deviation (RSD) values of 1.3-2.1% for royal jelly cream and 98.0-100.0% (n = 5) with RSD values of 1.6-3.0% for lyophilized powder, respectively. The limits of detection and quantitation were 0.5 and 1.5 mg/kg, respectively, for both royal jelly cream and lyophilized powder. The method was validated for the determination of practical royal jelly products. The concentration of 10-HDA ranged from 1.26 to 2.21% for pure royal jelly cream samples and 3.01 to 6.19% for royal jelly lyophilized powder samples. For 30 royal jelly products, the 10-HDA content varied from not detectable to 0.98%. FAU - Zhou, Jinhui AU - Zhou J AD - Beeproduct Quality Supervision and Inspection Testing Center, Ministry of Agriculture, Beijing 100093, People's Republic of China. FAU - Xue, Xiaofeng AU - Xue X FAU - Li, Yi AU - Li Y FAU - Zhang, Jinzhen AU - Zhang J FAU - Zhao, Jing AU - Zhao J LA - eng PT - Journal Article PL - England TA - J AOAC Int JT - Journal of AOAC International JID - 9215446 RN - 0 (Fatty Acids) RN - 0 (Fatty Acids, Monounsaturated) RN - 0 (Indicators and Reagents) RN - 765-01-5 (10-hydroxy-2-decenoic acid) RN - L497I37F0C (royal jelly) SB - IM MH - Animals MH - Bees MH - Chromatography, High Pressure Liquid/methods MH - Fatty Acids/*chemistry MH - Fatty Acids, Monounsaturated/*analysis MH - Freeze Drying MH - Indicators and Reagents MH - Kinetics EDAT- 2007/03/22 09:00 MHDA- 2007/06/07 09:00 CRDT- 2007/03/22 09:00 PHST- 2007/03/22 09:00 [pubmed] PHST- 2007/06/07 09:00 [medline] PHST- 2007/03/22 09:00 [entrez] PST - ppublish SO - J AOAC Int. 2007 Jan-Feb;90(1):244-9.