Changes in Chemical Composition of Flaxseed Oil during Thermal-Induced Oxidation and Resultant Effect on DSC Thermal Properties

Zhang, Zhenshan; Wei, Yang; Guan, Ni; Li, Bingzheng; Wang, Yong

doi:10.3390/molecules27207135

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…Flaxseed ( Linum usitatissimum L.) is a useful nutritional component, and its oil is used. In addition to omega-3 fatty acid, the GC–MS analysis of fixed oil revealed the presence of mono-, di-, and triterpenes including sesquiphellandrene, copaene, monoterpene, diethyl phthalate, hexadecanoic acid, squalene, and sitosterol as well as ascorbic acid and γ-tocopherol …”

Section: Review Findingsmentioning

confidence: 99%

“…In addition to omega-3 fatty acid, the GC−MS analysis of fixed oil revealed the presence of mono-, di-, and triterpenes including sesquiphellandrene, copaene, monoterpene, diethyl phthalate, hexadecanoic acid, squalene, and sitosterol as well as ascorbic acid and γ-tocopherol. 31 Olive (Olea europaea L.) oil has elements that are known to be beneficial to health, including phenolic compounds (such as tyrosol, oleocanthal, oleuropein, hydroxytyrosol, and oleuropein aglycone) and the presence of highly bioactive carotenoids (provitamin A) like carotene and lutein. 32 Sunflower (Helianthus annuus L.) oil is one among the top five vegetable oil harvests in the world.…”

Section: Introductionmentioning

confidence: 99%

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Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Ali,

Ekbbal,

Salar

et al. 2023

ACS Omega

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Medicinal plants are rich sources of natural oils such as essential and fixed oils used traditionally for nutritive as well as medicinal purposes. Most of the traditional formulations or phytopharmaceutical formulations contain oil as the main ingredient due to their own therapeutic applications and thus mitigating several pathogeneses such as fungal/bacterial/viral infection, gout, psoriasis, analgesic, antioxidant, skin infection, etc. Due to the lack of quality standards and progressive adulteration in the natural oils, their therapeutic efficacy is continuously deteriorated. To develop quality standards and validate scientific aspects on essential oils, several chromatographic and spectroscopic techniques such as HPTLC, HPLC, NMR, LC–MS, and GC–MS have been termed as the choices of techniques for better exploration of metabolites, hence sustaining the authenticity of the essential oils. In this review, chemical profiling and quality control aspects of essential or fixed oils have been explored from previously reported literature in reputed journals. Methods of chemical profiling, possible identified metabolites in essential oils, and their therapeutic applications have been described. The outcome of the review reveals that GC–MS/MS, LC-MS/MS, and NMR-based chromatographic and spectroscopic techniques are the most liable, economic, precise, and accurate techniques for determining the spuriousness or adulteration of oils based on their qualitative and quantitative chemical profiling studies. This review occupies the extensive information about the quality standards of several oils obtained from natural sources for their regulatory aspects via providing the detailed methods used in chemoprofiling techniques. Hence, this review helps researchers in further therapeutic exploration as well as quality-based standardization for their regulatory purpose.

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Section: Review Findingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Ali,

Ekbbal,

Salar

et al. 2023

ACS Omega

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“…Assessment of TAG components showed their influence on polymorphic behavior during phase transition, which affects unique DSC curves [Rousseau et al, 2005;Sato et al, 2013]. Furthermore, degree of unsaturation, indicated by the number of double bonds in the fatty acid chains, influences the energy required for crystallization or melting phase transition [Zhang et al, 2022]. Thus, any added adulterants, such as low-quality oils or other substances, can affect the oil's thermal properties and can be detected through thermal analysis.…”

Section: Introductionmentioning

confidence: 99%

Discrimination of Selected Cold-Pressed and Refined Oils by Untargeted Profiling of Phase Transition Curves of Differential Scanning Calorimetry

Islam¹,

Montowska²,

Fornal³

et al. 2023

Pol. J. Food Nutr. Sci.

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The authenticity assessment of edible oils is crucial to reassure consumers of product compliance. In this study, a new approach was taken to combining untargeted profiling by using differential scanning calorimetry (DSC) with chemometric methods in order to distinguish cold-pressed oils (flaxseed, camelina, hempseed) from refined oils (rapeseed, sunflower, soybean). The whole spectrum of DSC melting profiles was considered as a fingerprint of each oil. Flaxseed and hempseed oils exhibited four endothermic peaks, while three peaks with one exothermic event were detected for camelina seed oil. In the case of refined oils, two endothermic peaks were detected for rapeseed oil, three for sunflower oil and four for soybean oil. Thermodynamic parameters, such as peak temperature, peak heat flow and enthalpy, differed for each type of oil. Principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA) were used for processing data consisting of the whole spectrum of heat flow variables of melting phase transition. PCA demonstrated a clear separation between refined and cold-pressed oils as well as six individual oils. The OPLS-DA showed a distinct classification in six classes according to the types of oils. High OPLS-DA coefficients including R 2 X(cum)=0.971, R 2 (cum)=0.916 and Q 2 X(cum)=0.887 indicated good fitness of the model for oil discrimination. Variables influence on projection (VIP) plot indicated the most significant variables of the heat flow values detected at temperatures around −29°C, −32°C, −14°C, −10°C, −24°C and −41°C for the differentiation of oils. The study ultimately demonstrated great potential of the untargeted approach of using the whole melting DSC profile with chemometrics for the discrimination of cold-pressed and refined oils.

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Effects of high-temperature stages on the physicochemical properties and oxidation products formation of rapeseed oil with carnosic acid

Zhu,

Luan,

Chai

et al. 2025

Food Chemistry

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Changes in Chemical Composition of Flaxseed Oil during Thermal-Induced Oxidation and Resultant Effect on DSC Thermal Properties

Cited by 7 publications

References 42 publications

Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Discrimination of Selected Cold-Pressed and Refined Oils by Untargeted Profiling of Phase Transition Curves of Differential Scanning Calorimetry

Effects of high-temperature stages on the physicochemical properties and oxidation products formation of rapeseed oil with carnosic acid

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