title: High-performance liquid chromatographic determination of glycogen in sea urchin gonads with refractive index detection.
abstract: A high-performance liquid chromatographic method using refractive index detection for the determination of glycogen in sea urchin (Paracentrotus lividus) gonads is developed. After alkaline digestion with sodium carbonate, samples are adjusted to pH 4.6 with citric acid and incubated with amyloglucosidase to hydrolyze the glycogen. The resulting glucose is determined using a Spherisorb NH2 column as the stationary phase and an acetonitrile-water mixture (80:20, v/v) as the mobile phase. The relative standard deviation (%) was 3.57, the limit of detection was 40.1 microg/mL, and the recovery percentage was 97.2%.
authors.affiliation: Analytical Chemistry, Nutrition and Bromatology Department, Pharmacy Faculty, University of Santiago de Compostela, La Coruña, Spain.
authors.forename: J
authors.initials: J
authors.lastname: López-Hernández
authors.forename: M J
authors.initials: MJ
authors.lastname: González-Castro
authors.forename: M
authors.initials: M
authors.lastname: Pereda-González
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006003:Glycogen / Q000032:analysis*; D006066:Gonads / Q000737:chemistry*; D012031:Refractometry; D012617:Sea Urchins
chemical_list: D006003:Glycogen