A response surface methodology study on the efects of some phenolics and storage period length on vegetable oil quality: change in oxidation stability parameters

A response surface methodology study on the efects of some phenolics and storage period length on vegetable oil quality: change in oxidation stability parameters

In the present study, response surface methodology was conducted for the determination of efects of some phenolics (gallicacid, ellagic acid, and quercetin) on some stability parameters of mixed oil prepared with sunfower and hazelnut oils (50:50, v/v). Inthis respect, peroxide value (PV), free fatty acids (FFAs), p-anisidine value, induction period, and refractive index of mixed oil wereinvestigated. Predictive regression equations were constructed for the estimation of each studied parameter (R2 > 0.861). Te storageperiod caused a signifcant increase in the peroxide value, FFAs, p-anisidine, and refractive index values of the mixed oil, while itdecreased the induction period value of oil (P < 0.01). Te addition of gallic acid signifcantly retarded oxidation (P < 0.05), and ingeneral gallic acid and quercetin were found to be efective for preserving oil against oxidation.

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Turkish Journal of Agriculture and Forestry-Cover
  • ISSN: 1300-011X
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK
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