1
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Zheng Y, Schlag S, Wernlein T, Vetter W. Comprehensive gas chromatography with mass spectrometry analysis of sterols in red goji berries (Lycium sp.). Food Chem 2024; 453:139640. [PMID: 38762945 DOI: 10.1016/j.foodchem.2024.139640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/21/2024]
Abstract
Gas chromatography with mass spectrometry (GC/MS) and fractionation steps were used to determine the sterol patterns of red goji berries in detail. Twenty-five sterols were detected in fresh berries of two species (Lycium barbarum and L. chinense) from bushes grown in the botanical garden of the University of Hohenheim, and 20 sterols were identified. The rarely occurring campesta-5,24(25)-dienol, β-sitosterol, Δ5-avenasterol, campesterol, and cycloartenol represented >60 % of the total sterol content. Maturity and drying of fresh red goji berries caused small changes but did not affect the characteristic sterol pattern. This was confirmed by analyzing various commercial dried red goji berry samples from different sources. Separated flesh and seed samples revealed pronounced differences in the sterol pattern. A new method of merging GC/MS chromatograms showed that ∼75 % of the sterols were present in seeds and ∼25 % in flesh. The unique sterol profile may be exploited to authenticate red goji berries.
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Affiliation(s)
- Yan Zheng
- University of Hohenheim, Institute of Food Chemistry (170b), Garbenstraße 28, D-70599 Stuttgart, Germany; University of Hohenheim, Institute of Food Chemistry (170a), Garbenstraße 28, D-70599 Stuttgart, Germany.
| | - Sarah Schlag
- University of Hohenheim, Institute of Food Chemistry (170b), Garbenstraße 28, D-70599 Stuttgart, Germany.
| | - Tanja Wernlein
- University of Hohenheim, Institute of Food Chemistry (170b), Garbenstraße 28, D-70599 Stuttgart, Germany.
| | - Walter Vetter
- University of Hohenheim, Institute of Food Chemistry (170b), Garbenstraße 28, D-70599 Stuttgart, Germany.
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2
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Hermann-Ene V, Vetter W. Stable Carbon Isotope Ratios (δ 13C Values [‰]) of Individual Sterols in the Oils of C 3, C 4, and CAM Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:8247-8256. [PMID: 38551065 DOI: 10.1021/acs.jafc.3c08324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The compound-specific determination of δ13C values [‰] by gas chromatography interfaced with isotope ratio mass spectrometry (GC-IRMS) is a powerful analytical method to indicate minute but relevant variations in the 13C/12C ratio of sample compounds. In this study, the δ13C values [‰] of individual sterols were measured in eleven different oils of C3, C4, and CAM plants (n = 33) by GC-IRMS. For this purpose, a suitable acetylation method was developed for sterols. Nine of the eleven phytosterols identified by GC with mass spectrometry (GC/MS) could be measured by GC-IRMS. The δ13C values [‰] of individual sterols and squalene of C3 plant oils were between 3‰ and >16‰ more negative (lighter in carbon) than in C4 and CAM oils. We also showed that the blending of C4 oils into C3 oils (exemplarily conducted with one olive and one corn oil) would be precisely determined by means of the δ13C value [‰] of β-sitosterol.
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Affiliation(s)
- Vanessa Hermann-Ene
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstrasse 28, D-70599 Stuttgart, Germany
| | - Walter Vetter
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstrasse 28, D-70599 Stuttgart, Germany
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3
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Khallouki F, Ksila M, Ghzaiel I, Essadek S, Joutey MT, Maaloul S, Zennouhi W, Benbacer L, Bourhia M, Hajji L, Zarrouk A, Rezig L, Rup-Jacques S, Abdellaoui R, Ghrairi T, Masmoudi-Kouki O, Nasser B, Andreoletti P, Mustapha-Cherkaoui-Malki, Samadi M, Vejux A, Lizard G. Chemical and Biochemical Features of Spinasterol and Schottenol. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1440:45-55. [PMID: 38036874 DOI: 10.1007/978-3-031-43883-7_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Phytosterols, which are produced in plants, are structurally similar to cholesterol. Their basic structures consist of a cyclo pentano-perhydrophenanthrene nucleus composed of 3 hexane rings and of a pentane ring with an alkyl side chain. There are around more than 250 phytosterols and related compounds that have been identified in natural resources. Among them, spinasterol and schottenol, its dihydro analog, are often found in seeds, and consequently in seed oils, and in other botanical parts of some plant families such as Sapotaceae, Cactaceae, and Cucurbitaceae. Spinasterol and/or schottenol has been identified in dietary and cosmetic argan oil, milk thistle seed oil, nigella seed oil, and pumkin seed oil. These phytosterols that have several bioactive properties make them potentially attractive molecules in pharmacology. Their chemical and biochemical features are summarized and the analytical methods used to characterize and analyze these compounds are presented.
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Affiliation(s)
- Farid Khallouki
- Biology Department, Faculté des Sciences et Techniques, Moulay Ismail University of Meknes, Errachidia, Morocco
- Biology Department, Faculty of Sciences, Moulay Ismail University of Meknes, Meknes, Morocco
| | - Mohamed Ksila
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
- Laboratory of Neurophysiology, Cellular Physiopathology and Valorisation of Biomolecules, (LR18ES03), Department of Biology, Faculty of Sciences, University Tunis El Manar, Tunis, Tunisia
| | - Imen Ghzaiel
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
- Faculty of Medicine, Laboratory 'Nutrition, Functional Food and Vascular Health' (LR12ES05), University of Monastir, Monastir, Tunisia
| | - Soukaina Essadek
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
- Laboratory of Biochimistry, Neuroscience, Natural Resources and Environment, Faculty of Science and Technology, University Hassan I, Settat, Morocco
| | - Mounia Tahri Joutey
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
- Laboratory of Biochimistry, Neuroscience, Natural Resources and Environment, Faculty of Science and Technology, University Hassan I, Settat, Morocco
| | - Samah Maaloul
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
- Laboratory of Rangeland Ecosystems and Valorization of Spontaneous Plants and Associated Microorganisms (LR16IRA03), Arid Regions Institute, University of Gabes, Medenine, Tunisia
| | - Wafa Zennouhi
- Biology Department, Faculté des Sciences et Techniques, Moulay Ismail University of Meknes, Errachidia, Morocco
| | - Laila Benbacer
- Unité de Biologie et Recherches Moléculaires, Département Sciences du Vivant, Centre National de l'Energie, des Sciences et Techniques Nucléaires (CNESTEN), Rabat, Morocco
| | - Mohamed Bourhia
- Faculty of Medicine and Pharmacy, Ibn Zohr University, Laayoune, Morocco
| | - Lhoussain Hajji
- Biology Department, Faculty of Sciences, Moulay Ismail University of Meknes, Meknes, Morocco
| | - Amira Zarrouk
- Faculty of Medicine, Laboratory 'Nutrition, Functional Food and Vascular Health' (LR12ES05), University of Monastir, Monastir, Tunisia
| | - Leila Rezig
- LIP-MB 'Laboratory of Protein Engineering and Bioactive Molecules', National Institute of Applied Sciences and Technology, LR11ES26, University of Carthage, Tunis, Tunisia
- High Institute of Food Industries, University of Carthage, Tunis, Tunisia
| | - Sandrine Rup-Jacques
- Laboratory of Chemistry and Physics Multi-Scale Approach to Complex Environments, Department of Chemistry, University Lorraine, Metz, France
| | - Raoudha Abdellaoui
- Laboratory of Rangeland Ecosystems and Valorization of Spontaneous Plants and Associated Microorganisms (LR16IRA03), Arid Regions Institute, University of Gabes, Medenine, Tunisia
| | - Taoufik Ghrairi
- Laboratory of Neurophysiology, Cellular Physiopathology and Valorisation of Biomolecules, (LR18ES03), Department of Biology, Faculty of Sciences, University Tunis El Manar, Tunis, Tunisia
| | - Olfa Masmoudi-Kouki
- Laboratory of Neurophysiology, Cellular Physiopathology and Valorisation of Biomolecules, (LR18ES03), Department of Biology, Faculty of Sciences, University Tunis El Manar, Tunis, Tunisia
| | - Boubker Nasser
- Laboratory of Biochimistry, Neuroscience, Natural Resources and Environment, Faculty of Science and Technology, University Hassan I, Settat, Morocco
| | - Pierre Andreoletti
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
| | | | - Mohammad Samadi
- Laboratory of Chemistry and Physics Multi-Scale Approach to Complex Environments, Department of Chemistry, University Lorraine, Metz, France
| | - Anne Vejux
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France
| | - Gérard Lizard
- Bio-PeroxIL Laboratory, EA7270, University of Bourgogne & Inserm, Dijon, France.
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Schlag S, Bräckle Y, Jelečević M, Vetter W. Gas chromatography with mass spectrometry analysis of 4,4-dimethylsterols and 4-methylsterols in edible oils after their enrichment by means of solid phase extraction. J Chromatogr A 2023; 1705:464166. [PMID: 37356364 DOI: 10.1016/j.chroma.2023.464166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/27/2023]
Abstract
4-Methylsterols (4-M-sterols) and 4,4-dimethylsterols (4,4-D-sterols) are a group of underexplored minor sterols that occur in almost all living organisms. Here, we developed a strategy for the determination of the biochemical precursors of the predominant 4-desmethylsterols in edible oils. Due to their low contribution to the sterol content in the samples, a solid phase extraction (SPE) method was developed for the enrichment of 4-M- and 4,4-D-sterols in the hexane extracts of saponified oils. In a two-fold SPE procedure, the bulk of 4,4-D-sterols was collected in one fraction. The residual sample was subjected to a second SPE step which targeted all 4-M-sterols and low shares of 4,4-D-sterols in one fraction and the predominant 4-desmethylsterols in another one. After silylation of the SPE fractions, gas chromatography with mass spectrometry (GC/MS) was used to analyze 4,4-D- and 4-M-sterols. The results were used to define eight subgroups whose characteristic structural features could be linked with the presence of specific m/z values. These m/z values were measured sensitively by GC/MS operated in selected ion monitoring (SIM) mode. Application of the GC/MS method to eighteen edible oils enabled the detection of 55 mostly very low abundant 4-M- and 4,4-D-sterols. Twenty-four of the 4-M- and 4,4-D-sterols could be assigned and the remaining 31 unknown sterols could be traced back to their basic structures.
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Affiliation(s)
- Sarah Schlag
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, Stuttgart D-70599, Germany
| | - Yvonne Bräckle
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, Stuttgart D-70599, Germany
| | - Marina Jelečević
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, Stuttgart D-70599, Germany
| | - Walter Vetter
- Institute of Food Chemistry (170b), University of Hohenheim, Garbenstraße 28, Stuttgart D-70599, Germany.
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Jiang F, Zhu Y, Hu WX, Li M, Liu Y, Feng J, Lv X, Yu X, Du SK. Characterization of quinoa starch nanoparticles as a stabilizer for oil in water Pickering emulsion. Food Chem 2023; 427:136697. [PMID: 37379746 DOI: 10.1016/j.foodchem.2023.136697] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 06/30/2023]
Abstract
Quinoa starch nanoparticles (QSNPs) prepared by nanoprecipitation had a uniform particle size of 191.20 nm. QSNPs with amorphous crystalline structure had greater contact angle than QS with orthorhombic crystalline structure, which can therefore be utilized to stabilize Pickering emulsions. QSNPs-based Pickering emulsions prepared by suitable formulations (QSNPs concentration of 2.0-2.5 %, oil volume fraction of 0.33-0.67) exhibited good stability against pH of 3-9 and ionic strength of 0-200 mM. The oxidative stability of the emulsions increased with increasing starch concentration and ionic strength. Microstructural and rheological results indicated that the structure of the starch interfacial film and the thickening effect of the water phase affected the emulsion stability. The emulsion had excellent freeze-thaw stability and can be produced as a re-dispersible dry emulsion using the freeze-drying technique. These results implied that the QSNPs had great potential for application in the preparation of Pickering emulsions.
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Affiliation(s)
- Fan Jiang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Yulian Zhu
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Wen-Xuan Hu
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Mengqing Li
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Yangjin Liu
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Jingjing Feng
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Xin Lv
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China
| | - Xiuzhu Yu
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China; Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, Yangling, Shaanxi 712100, PR China
| | - Shuang-Kui Du
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling, Shaanxi 712100, PR China; Shaanxi Union Research Center of University and Enterprise for Grain Processing Technologies, Yangling, Shaanxi 712100, PR China.
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Mu H, Xue S, Sun Q, Shi J, Zhang D, Wang D, Wei J. Research Progress of Quinoa Seeds ( Chenopodium quinoa Wild.): Nutritional Components, Technological Treatment, and Application. Foods 2023; 12:foods12102087. [PMID: 37238905 DOI: 10.3390/foods12102087] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/11/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Quinoa (Chenopodium quinoa Wild.) is a pseudo-grain that belongs to the amaranth family and has gained attention due to its exceptional nutritional properties. Compared to other grains, quinoa has a higher protein content, a more balanced amino acid profile, unique starch features, higher levels of dietary fiber, and a variety of phytochemicals. In this review, the physicochemical and functional properties of the major nutritional components in quinoa are summarized and compared to those of other grains. Our review also highlights the technological approaches used to improve the quality of quinoa-based products. The challenges of formulating quinoa into food products are addressed, and strategies for overcoming these challenges through technological innovation are discussed. This review also provides examples of common applications of quinoa seeds. Overall, the review underscores the potential benefits of incorporating quinoa into the diet and the importance of developing innovative approaches to enhance the nutritional quality and functionality of quinoa-based products.
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Affiliation(s)
- Hongyan Mu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
| | - Sophia Xue
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
| | - Qingrui Sun
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - John Shi
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
| | - Danyang Zhang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Deda Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Jianteng Wei
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
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