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Simple Resolution of Butylated Hydroxyanisole and n‐Propyl Gallate in Fatty Foods and Cosmetics Samples by Flow‐Injection Solid‐Phase Spectrophotometry
Author(s) -
CapitánVallvey L.F.,
Valencia M. C.,
Nicolás E. Arana
Publication year - 2003
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2003.tb12297.x
Subject(s) - butylated hydroxyanisole , propyl gallate , chemistry , spectrophotometry , chromatography , absorbance , detection limit , gallate , antioxidant , nuclear chemistry , organic chemistry
A biparameter sensor using flow injection with solid‐phase spectrophotometry for the simultaneous determination of butylated hydroxyanisole (BHA) and n‐propyl gallate (n‐PG) in fatty foods and cosmetics is proposed. The method is based on different transient retentions of these antioxidants when carried with methanol‐water 30:70%, vol/vol, through a flow cell packed to a 25‐mm height with C 18 silica. Each antioxidant was determined by measuring its intrinsic absorbance at its residence time (40 s at 272 nm for n‐PG; 200 s at 288 nm for BHA; calibration: 5.0 to 300.0 μg/mL; RSD: 1.7%) by flow technique and diode‐array detector. Resolution of the BHA‐n‐PG mixture in ratios between 1:10 and 10:1 is possible.