Characterization of Linum usitatissimum L. used in Tunisia as food crop

Affes, Marwa; Fakhfakh, Jawhar; Ayadi, Mohamed Ali; Allouche, Noureddine

doi:10.1007/s11694-016-9449-2

Cited by 7 publications

(10 citation statements)

References 31 publications

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“…The dominant TAG in the raw flaxseed oil were LnLnLn (32.24%), followed by LnLnL (20.49%), LnLnO (14.38%), LnLnP (6.76%), LnOL (5.65%) and LnLL (5.06%). The results are in good agreement with previous report by Affes, et al [ 30 ]. As anticipated, heating time had a significant impact on flaxseed oil’s TAG composition.…”

Section: Resultssupporting

confidence: 94%

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

Zhang

Wei²,

Guan

et al. 2022

Molecules

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To investigate the changes in chemical composition of flaxseed oil during thermal-induced oxidation and the resultant effect on thermal properties, samples with different oxidation levels were obtained by being heated at 180 °C for two hours and four hours. The oxidation degree was evaluated using peroxide value (PV), extinction coefficient at 232 nm and 268 nm (K232 and K268), and total polar compounds (TPC). Using chromatography, the fatty acid profile and triacylglycerol (TAG) profile were examined. Differential scanning calorimetry (DSC) was used to determine the crystallization and melting profiles. Thermal-induced oxidation of flaxseed oil led to a significant increase (p < 0.05) in PV, K232, K268, and TPC, but the relative content of linolenic acid (Ln) and LnLnLn reduced dramatically (p < 0.05). TPC derived from lipid degradation affected both crystallization and melting profiles. Statistical correlations showed that the onset temperature (Ton) of the crystallization curve was highly correlated with K232, TPC, and the relative content of LnLnLn (p < 0.05), whereas the offset temperature (Toff) of the melting curve was highly correlated with the relative content of most fatty acids (p < 0.05). This finding provides a new way of rapid evaluation of oxidation level and changes of chemical composition for flaxseed oils using DSC.

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Section: Resultssupporting

confidence: 94%

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

Zhang

Wei²,

Guan

et al. 2022

Molecules

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“…ECN was computed according to the equation ECN = CN–2DB, where CN stands for the number of carbon atoms and DB corresponds to the number of double bonds [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

“…The water layer rich in sugar was separated, lyophilized, dissolved in 2 mL D 2 O and then loaded onto an NMR tube. Coupling constants ( J ) are denoted in Hertz and the chemical shifts ( δ ) in ppm [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

The sweet and embellishing Lycium arabicum Schweinf. ex Boiss. fruit oil: a potential source of essential ω-6 and ω-9 fatty acids, phytosterols, and carotenoids

FAKHFAKH¹,

Affes²,

JABEUR³

et al. 2022

Turkish Journal of Chemistry

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In our current phytochemical investigation on the Tunisian plant Lycium arabicum Schweinf. ex Boiss., we attempted to explore the oil obtained from its fruits. This oil was extracted by cold maceration with ethanol and was analyzed to estimate its sterol and fatty acid content. The physicochemical parameters of the oil were also examined. They were specified in terms of acid value (0.8 ± 0.01 mg KOH g −1 oil), peroxide value (10.9 ± 0.02 meq O 2 kg −1 oil), saponification value (162.97 ± 0.03 mg KOH g −1 oil), chlorophylls (1.011 ± 0.03 mg kg −1 oil) and carotenoids (42.1 ± 0.05mg kg −1 oil). Gas chromatography analysis demonstrated that oleic (33.5%), palmitic (26.81%) and linoleic (21.51%) acids were the dominant fatty acids. Furthermore, the analysis of this oil with HPLC equipped with a differential refractometer detector (DRD) showed that Palmitic-Oleic-Oleic (21.10%) and Oleic-Oleic-Oleic/Palmitoleic-Palmitic-Palmitic (17.11%) are the main triacylglycerols in this oil. It was also found that this oil contains high levels of β -sitosterol (31.51%), Δ -5-Avenasterol (25.17%), and Δ -7-Avenasterol (15.22%). Analysis of its spectroscopic features allowed us to deduce that this oil contains some sugars like glucose, sucrose, and fructose as well as several carotenoid pigments. From this perspective, Lycium arabicum fruits oil (LAFO) maybe regarded as a worthwhile product that deserves supplementary consideration and investigation as a potentially new multi-purpose candidate for agro-food as a sweetener and a beautifier, in addition to its extreme usefulness for cosmetic and medicinal applications owing to its richness in phytosterols and conservative pigments.

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“…In LOH FTIR spectra, the C-H symmetrical and asymmetrical stretching vibration in CH 2 and CH 3 groups are revealed at around 2920 and 2848 cm −1 , while their bending vibrations are located at 1487 and 1450 cm −1 . The peaks at about 1650 cm −1 are related to carbonyl (C=O) groups and at near 1263, 1076, and 1030 cm −1 are due to C-O and C-C stretching vibrations [36][37][38]. FTIR spectrum of nanocomposite gel contains all absorbance peaks of Alg, LOH, and nHA, with some shifts and overlapping in the intensity and/or shape of the absorption peaks.…”

Section: Ftir Spectroscopymentioning

confidence: 99%

Fabrication and Characterization of Nanocomposite Hydrogel Based on Alginate/Nano-Hydroxyapatite Loaded with Linum usitatissimum Extract as a Bone Tissue Engineering Scaffold

et al. 2021

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In the current paper, we fabricated, characterized, and applied nanocomposite hydrogel based on alginate (Alg) and nano-hydroxyapatite (nHA) loaded with phenolic purified extracts from the aerial part of Linum usitatissimum (LOH) as the bone tissue engineering scaffold. nHA was synthesized based on the wet chemical technique/precipitation reaction and incorporated into Alg hydrogel as the filler via physical cross-linking. The characterizations (SEM, DLS, and Zeta potential) revealed that the synthesized nHA possess a plate-like shape with nanometric dimensions. The fabricated nanocomposite has a porous architecture with interconnected pores. The average pore size was in the range of 100–200 µm and the porosity range of 80–90%. The LOH release measurement showed that about 90% of the loaded drug was released within 12 h followed by a sustained release over 48 h. The in vitro assessments showed that the nanocomposite possesses significant antioxidant activity promoting bone regeneration. The hemolysis induction measurement showed that the nanocomposites were hemocompatible with negligible hemolysis induction. The cell viability/proliferation confirmed the biocompatibility of the nanocomposites, which induced proliferative effects in a dose-dependent manner. This study revealed the fabricated nanocomposites are bioactive and osteoactive applicable for bone tissue engineering applications.

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Characterization of Linum usitatissimum L. used in Tunisia as food crop

Cited by 7 publications

References 31 publications

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

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

The sweet and embellishing Lycium arabicum Schweinf. ex Boiss. fruit oil: a potential source of essential ω-6 and ω-9 fatty acids, phytosterols, and carotenoids

Fabrication and Characterization of Nanocomposite Hydrogel Based on Alginate/Nano-Hydroxyapatite Loaded with Linum usitatissimum Extract as a Bone Tissue Engineering Scaffold

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