title: [Determination of vitamins B1 and B2 in selected vegetable-fruit products].
abstract: A simple method was described to determine vitamins B1 and B2 in fruit and vegetable-fruit juices. Vitamins were extracted with perchloric acid and for their determination an ion pairing RP-HPLC technique with UV detection by 254 nm was applied. The average recovery for vitamin B1 was 85-104% and 94-105% for vitamin B2. The statistically estimated limits of identification and detection were respectively, for both vitamins: for B1: 0.008 and 0.0024, and for B2 0.0002 and 0.0007 mg/ml of product.
authors.affiliation: Zakład Analizy Zywności, Instytut Biotechnologii Przemysłu Rolno-Spozywczego, Warszawa.
authors.forename: L
authors.initials: L
authors.lastname: Czerwiecki
authors.forename: G
authors.initials: G
authors.lastname: Wilczyńska
mesh_terms: D005638:Fruit / Q000737:chemistry*; D006801:Humans; D012256:Riboflavin / Q000032:analysis*; D013831:Thiamine / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D012256:Riboflavin; D013831:Thiamine