title: [Determination of six p-hydroxybenzoic acid esters in laver (nori) by HPLC].
abstract: A rapid and simple method was developed for simultaneous determination of methyl, ethyl, isopropyl, npropyl, isobuthyl and n-buthyl p-hydroxybenzoic acid esters (PHBA-Es) in laver by HPLC. Six PHBA-Es were extracted from laver with n-hexane-ethyl acetate (1:1) by shaking. The extract was evaporated. The residue was dissolved in methyl alcohol and determined by HPLC. Recoveries of six PHBA-Es spiked in laver were 93.6-101.2% at the level of 2 micrograms/g.
authors.affiliation: yoko@nihs.go.jp
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: Chikako
authors.initials: C
authors.lastname: Yomota
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tanamoto
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005504:Food Analysis / Q000379:methods*; D010226:Parabens / Q000032:analysis*; D012624:Seaweed / Q000737:chemistry*
chemical_list: D010226:Parabens