title: Quantification of adulterations in extra virgin flaxseed oil using MIR and PLS.
abstract: This paper proposes a new method for the quantitative analysis of soybean oil (SO) and sunflower oil (SFO) as adulterants in extra virgin flaxseed oil (EFO) by applying Mid Infrared Spectroscopy (MIR) associated with chemometric technique of Partial Least Squares (PLS). The PLS models were built in accordance with standard method ASTM E1655-05 and these showed good correlation between the reference values and those calculated using the PLS models with low error values, with R = 0.998 for SFO and R = 0.999 for SO in EFO. These models were validated analytically in accordance with Brazilian and international guidelines through the estimate of figures of merit parameters, thus showing an effective and feasible method to control the quality of extra virgin flaxseed oil.
authors.affiliation: Institute of Chemistry, Federal University of Uberlândia, Santa Mônica Campus, 38408-100 Uberlândia, Minas Gerais, Brazil. Electronic address: leticiam_souza@yahoo.com.br.
authors.forename: Letícia Maria
authors.initials: LM
authors.lastname: de Souza
authors.affiliation: Institute of Chemistry, Federal University of Uberlândia, Santa Mônica Campus, 38408-100 Uberlândia, Minas Gerais, Brazil. Electronic address: felipebachion@hotmail.com.
authors.forename: Felipe Bachion
authors.initials: FB
authors.lastname: de Santana
authors.affiliation: Institute of Chemistry, Federal University of Uberlândia, Santa Mônica Campus, 38408-100 Uberlândia, Minas Gerais, Brazil; Goiano Federal Institute of Education, Science and Technology, Geraldo Silva Nascimento Road, km 2.5, 75790-000 Urutaí, GO, Brazil. Electronic address: quilucas10@gmail.com.
authors.forename: Lucas Caixeta
authors.initials: LC
authors.lastname: Gontijo
authors.affiliation: Institute of Chemistry, Federal University of Uberlândia, Santa Mônica Campus, 38408-100 Uberlândia, Minas Gerais, Brazil; Josina Machel Secondary School of Belane, Vilankulo, Inhambane, Mozambique. Electronic address: mazivilasj@mestrado.ufu.br.
authors.forename: Sarmento Júnior
authors.initials: SJ
authors.lastname: Mazivila
authors.affiliation: Institute of Chemistry, Federal University of Uberlândia, Santa Mônica Campus, 38408-100 Uberlândia, Minas Gerais, Brazil. Electronic address: wbn@iqufu.ufu.br.
authors.forename: Waldomiro
authors.initials: W
authors.lastname: Borges Neto
mesh_terms: D005506:Food Contamination / Q000032:analysis*; D008043:Linseed Oil / Q000032:analysis*; D013024:Soybean Oil / Q000032:analysis*; D013055:Spectrophotometry, Infrared / Q000379:methods*
chemical_list: D013024:Soybean Oil; D008043:Linseed Oil
keywords: Adulteration of edible oils; Analytical validation; Extra virgin flaxseed oil; Infrared spectroscopy; PLS