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Effect of cyclolinopeptides on the oxidative stability of flaxseed oil.
J Agric Food Chem. 2014 Jan 08; 62(1):88-96.JA

Abstract

Polar compounds present in flaxseed oil increase its oxidative stability. Flaxseed oil becomes less stable to oxidation when filtered with silica. This observation may be linked to antioxidant compounds present in flaxseed oil. Flaxseed oil was passed over a silica adsorbent column to remove polar compounds. The polar compounds were then eluted from the silica absorbant using a series of increasingly polar solvents. The polar fractions from flaxseed oil were then added back to silica-treated flaxseed oil to determine the impact of fractions containing polar compounds on oxidative stability (induction time) at 100 °C. A polar fraction containing mainly cyclolinopeptide A (CLA, 1), but also containing β/γ- and δ-tocopherol increased the induction time of silica-treated flaxseed oil from 2.36 ± 0.28 to 3.20 ± 0.41 h. When oxidative stability was determined immediately after addition of the polar fractions other flaxseed fractions and solvent controls did not affect oil stability. However, when the oxidative stability index (OSI) test was delayed for three days and oil samples were held at room temperature after the addition of the polar fractions to the flaxseed oil, it was observed that the control oil treated with silica had become highly sensitive to oxidation. A polar fraction containing a mixture of CLs (1, 5, 7, 9, 11), improved the oxidative stability of peptide-free oil with respect to the control when the OSI measurement was made three days after adding the fraction. In addition, effects of 1 on the oxidative stability of peptide-free oil containing divalent metal cations was investigated.

Authors+Show Affiliations

Department of Food and Bioproduct Sciences, and ‡Department of Plant Sciences, University of Saskatchewan , 51 Campus Drive, Saskatoon, Saskatchewan S7N 5A8, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24313572

Citation

Sharav, Oyunchimeg, et al. "Effect of Cyclolinopeptides On the Oxidative Stability of Flaxseed Oil." Journal of Agricultural and Food Chemistry, vol. 62, no. 1, 2014, pp. 88-96.
Sharav O, Shim YY, Okinyo-Owiti DP, et al. Effect of cyclolinopeptides on the oxidative stability of flaxseed oil. J Agric Food Chem. 2014;62(1):88-96.
Sharav, O., Shim, Y. Y., Okinyo-Owiti, D. P., Sammynaiken, R., & Reaney, M. J. (2014). Effect of cyclolinopeptides on the oxidative stability of flaxseed oil. Journal of Agricultural and Food Chemistry, 62(1), 88-96. https://doi.org/10.1021/jf4037744
Sharav O, et al. Effect of Cyclolinopeptides On the Oxidative Stability of Flaxseed Oil. J Agric Food Chem. 2014 Jan 8;62(1):88-96. PubMed PMID: 24313572.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of cyclolinopeptides on the oxidative stability of flaxseed oil. AU - Sharav,Oyunchimeg, AU - Shim,Youn Young, AU - Okinyo-Owiti,Denis P, AU - Sammynaiken,Ramaswami, AU - Reaney,Martin J T, Y1 - 2013/12/18/ PY - 2013/12/10/entrez PY - 2013/12/10/pubmed PY - 2015/9/12/medline KW - Linum usitatissimum L. KW - antioxidant KW - cyclolinopeptide KW - flaxseed KW - oxidative stability SP - 88 EP - 96 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 62 IS - 1 N2 - Polar compounds present in flaxseed oil increase its oxidative stability. Flaxseed oil becomes less stable to oxidation when filtered with silica. This observation may be linked to antioxidant compounds present in flaxseed oil. Flaxseed oil was passed over a silica adsorbent column to remove polar compounds. The polar compounds were then eluted from the silica absorbant using a series of increasingly polar solvents. The polar fractions from flaxseed oil were then added back to silica-treated flaxseed oil to determine the impact of fractions containing polar compounds on oxidative stability (induction time) at 100 °C. A polar fraction containing mainly cyclolinopeptide A (CLA, 1), but also containing β/γ- and δ-tocopherol increased the induction time of silica-treated flaxseed oil from 2.36 ± 0.28 to 3.20 ± 0.41 h. When oxidative stability was determined immediately after addition of the polar fractions other flaxseed fractions and solvent controls did not affect oil stability. However, when the oxidative stability index (OSI) test was delayed for three days and oil samples were held at room temperature after the addition of the polar fractions to the flaxseed oil, it was observed that the control oil treated with silica had become highly sensitive to oxidation. A polar fraction containing a mixture of CLs (1, 5, 7, 9, 11), improved the oxidative stability of peptide-free oil with respect to the control when the OSI measurement was made three days after adding the fraction. In addition, effects of 1 on the oxidative stability of peptide-free oil containing divalent metal cations was investigated. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/24313572/Effect_of_cyclolinopeptides_on_the_oxidative_stability_of_flaxseed_oil_ L2 - https://dx.doi.org/10.1021/jf4037744 DB - PRIME DP - Unbound Medicine ER -