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• Bakir, N.(1)
• Baranski, Marcin(1)
• Benbrook, Charles(1)
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• Ilyasoglu, H.(1)
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• Kasapoglu, K. N.(1)
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• Ozcelik, B.(1)
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• Srednicka-Tober, Dominika(1)
• Stefanakis, Alexandros(1)
• Steinshamn, Havard(1)
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• Yucetepe, A.(1)

• MakaleAçık Erişim2018Scopus SJRQ3/r/gumushane/10376
  PRODUCTION OF STRUCTURED LIPIDS FROM HAZELNUT OIL WITH CONJUGATED LINOLEIC ACID BY LIPASE-CATALYZED ESTERIFICATION: OPTIMIZATION BY RESPONSE SURFACE METHODOLOGY

  Bakir, N.; Ilyasoglu, H.; Yucetepe, A.; Kasapoglu, K. N.; Demircan, E.; Ozcelik, B.

  The aim of this study was to synthesize structured lipid from hazelnut oil with conjugated linoleic acid (CLA) by lipase-catalyzed esterification reaction. The incorporation of CLA into hazelnut oil was optimized by response surface methodology (RSM). Substrate molar ratio, time, and temperature were independent variables chosen for optimization of the reaction. Substrate molar ratio was the most significant variable on the incorporation of conjugated linoleic acid. Good quadratic model was achieved by multiple regression analysis and backward elimination. Optimal incorporation conditions were determined as follows: reaction temperature, 59 degrees C; time, 6 hours; substrate molar ratio, 4. Under these optimum conditions, a maximum incorporation ratio of CLA into hazelnut oil of 49.42% was achieved.

  AtıfScopus1·WoS1·OpenAlex3

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• Derleme MakaleAçık Erişim2016Scopus SJRQ1/r/gumushane/10679
  Higher PUFA and n-3 PUFA, conjugated linoleic acid, α-tocopherol and iron, but lower iodine and selenium concentrations in organic milk: a systematic literature review and meta- and redundancy analyses

  Srednicka-Tober, Dominika; Baranski, Marcin; Seal, Chris J.; Sanderson, Roy; Benbrook, Charles; Steinshamn, Havard; Gromadzka-Ostrowska, Joanna; Rembialkowska, Ewa; Skwarlo-Sonta, Krystyna; Eyre, Mick

  Demand for organic milk is partially driven by consumer perceptions that it is more nutritious. However, there is still considerable uncertainty over whether the use of organic production standards affects milk quality. Here we report results of meta-analyses based on 170 published studies comparing the nutrient content of organic and conventional bovine milk. There were no significant differences in total SFA and MUFA concentrations between organic and conventional milk. However, concentrations of total PUFA and n-3 PUFA were significantly higher in organic milk, by an estimated 7 (95% CI -1, 15)% and 56 (95% CI 38, 74) %, respectively. Concentrations of alpha-linolenic acid (ALA), very long-chain n-3 fatty acids (EPA + DPA + DHA) and conjugated linoleic acid were also significantly higher in organic milk, by an 69 (95% CI 53, 84) %, 57 (95% CI 27, 87)% and 41 ( 95% CI 14, 68) %, respectively. As there were no significant differences in total n-6 PUFA and linoleic acid (LA) concentrations, the n-6:n-3 and LA: ALA ratios were lower in organic milk, by an estimated 71 (95% CI -122, -20)% and 93 (95% CI -116, -70) %. It is concluded that organic bovine milk has a more desirable fatty acid composition than conventional milk. Meta-analyses also showed that organic milk has significantly higher alpha-tocopherol and Fe, but lower I and Se concentrations. Redundancy analysis of data from a large cross-European milk quality survey indicates that the higher grazing/conserved forage intakes in organic systems were the main reason for milk composition differences.

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  AtıfScopus197·WoS154·OpenAlex212

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