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  • 标题:NOVEL ANALYZING APPROACHES FORCHEMICAL CHARACTERIZATION OF SUNFLOWER OILSDURING DEEP-FRYING BY FT-IR
  • 本地全文:下载
  • 作者:Eyyup Karaogul ; Sumeyra Al ; M Sukru Karakus
  • 期刊名称:Fresenius Environmental Bulletin
  • 印刷版ISSN:1018-4619
  • 出版年度:2020
  • 卷号:29
  • 期号:9
  • 页码:7847-7853
  • 语种:English
  • 出版社:PSP Publishing
  • 摘要:The main aim of this study is to investigate the change in the chemical properties on frying cycles of Sunflower o il by FT-IR. Deep-frying (DFO) was carried out 9 times for 20 minutes. The main charac­teristic bands in the FT-IR spectra were determined to be concerned to peroxide, cis, trans, -CH3, -CH2, ester and ether groups. Additionally, the index cal­culations and formulation from FT-IR spectra were applied and this technique was novel for characteri­zation of the o il about interactions between virgin o il (VO) and DFO. Depending on the index calcula­tions, Cis Index (Cs-Inx), trans index (Trs-Inx), ester index (Est-Inx), methyl index (M t-Inx), peroxide in­dex (Prx-Inx), ether index (Et-Inx) and unsaturated o il index (Ust-Inx) were investigated. Results demonstrated that Cs-Inx, Est-Inx and Ust-Inx were decreased w ith the frying process unlike Trs-Inx, M t-Inx, Prx-Inx and Et-Inx because of o il's degrada­tions. In addition, the 1st, 2nd, 3rd, and 4th FT-IR derivatives were also displayed better interpretation of the interactions between VO and DFO. It was con­cluded that FT-IR spectra and derivatives could be used as a new perspective to investigate the chemical properties of oils and index calculations.
  • 关键词:Oil;Deep-Frying;FT-IR;Index;Derivative
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