Source: http://livrozilla.com/doc/1750378/redalyc.volatile-profile-of-heated-soybean-oil-treated-wi..
Timestamp: 2019-04-20 16:39:55+00:00

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20 °C for the first minute, and then it was increased up to 160 °C at the rate of 10 °C min–1. The final temperature was kept for 10 minutes.
oxidative stability since no new volatile compound was detected in the heated samples treated with them.
Keywords: soybean oil; GC/MS; oxidative volatiles; quercetin; chlorogenic acid.
do óleo foi de 20 °C no primeiro minuto e aumentada até 160 °C à taxa de 10 °C min–1. A temperatura final foi mantida por 10 minutos.
em comparação àquelas sem tratamento algum. Nenhum odor foi percebido nas amostras aquecidas com adição prévia de quercetina.
boa estabilidade oxidativa, já que nenhum composto volátil novo foi detectado nas amostras aquecidas e tratadas com eles.
Palavras-chave: ácido clorogênico; CG/EM; compostos voláteis; óleo de soja; quercetina.
oxidative stability index instrument (DE MARIA et al., 2000).
rancidity in canola oil (WANASUNDARA; SHAHIDI, 1994).
MO, USA). Tenax TA was from Supelco (Bellefonte, PA, USA).
other chemicals were from Aldrich (Sheboygan, WI, USA).
PV analysis (MAGDA et al., 1997).
to the enrichment of the headspace fraction.
­Germany), o.d. 10 mm, and heated at 60 °C under stirring.
a oven at 225 °C for 3 hours under a N2 flow of 0.9-1.0 ­L­ ­min–1.
rotatory evaporator at 20 °C.
injector and FID temperatures were 230 and 240 °C, respectively.
KRATZ, 1963). All oil samples were analyzed in two replicates.
performed using a statistical graphics system (STSC, 1986).
were considered to be definitively identified.
CG/SNIFFING: The same above-mentioned chromatographic conditions were used, splitting the effluent of the capillary column (1:10) between FID, and the artisanal sniffing port.
Odor port evaluation was carried out freely by two testers.
proved the good quality of the product (MAGDA et al., 1997).
5-CQA was capable of delaying oil peroxide formation.
linolenate at room temperature (ULLRICH; GROSCH, 1987).
8, 9, 10 and 11 hydroperoxides of linoleic and linolenic esters.
Table 1. Volatile composition of heated soybean oil samples without antioxidants and treated 5-CQA and quercetin.
with two replicates each; and means with different Greek letters (α, β) in the same row are significantly different at p < 0.05.
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(FAPERJ) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).
v. 11, p. 463-471, 1963.
v. 50, p. 996-1005, 2006.

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