scholarly journals Triacylglycerols and Fatty Acid Compositions of Cucumber, Tomato, Pumpkin, and Carrot Seed Oils by Ultra-Performance Convergence Chromatography Combined with Quadrupole Time-of-Flight Mass Spectrometry

Foods ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 970
Author(s):  
Yanfang Li ◽  
Fanghao Yuan ◽  
Yanbei Wu ◽  
Yaqiong Zhang ◽  
Boyan Gao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Seed Oil ◽  
Seed Oils ◽  
Pumpkin Seed ◽  
Flight Mass Spectrometry ◽  
Vegetable Seed ◽  
Carrot Seed ◽  
Total Fatty Acids ◽  
Tof Ms

The triacylglycerol (TAG) compositions of cucumber, tomato, pumpkin, and carrot seed oils were analyzed using ultra-performance convergence chromatography (UPC2) combined with quadrupole time-of-flight mass spectrometry (Q-TOF MS). A total of 36, 42, 39, and 27 different TAGs were characterized based on their Q-TOF MS accurate molecular weight and MS2 fragment ion profiles in the cucumber, tomato, pumpkin, and carrot seed oils, respectively. Generally, different vegetable seed oils had different TAGs compositions. Among the identified fatty acids, linoleic acid was the most abundant fatty acid in cucumber, tomato, and pumpkin seed oils and the second most abundant in carrot seed oil with relative concentrations of 54.48, 48.69, 45.10, and 15.92 g/100 g total fatty acids, respectively. Oleic acid has the highest concentration in carrot seed oil and the second highest in cucumber, tomato, and pumpkin seed oils, with relative concentrations of 78.97, 18.57, 27.16, and 33.39 g/100 g total fatty acids, respectively. The chemical compositions of TAGs and fatty acids could promote understanding about the chemical profiles of certain vegetable seed oils, thus improving the potential ability to select appropriate oils with specific functions and a high nutritional value and then develop functional foods in the future.

THE FATTY ACIDS OF HARE'S-EAR MUSTARD SEED OIL

1946 ◽  
Vol 24b (5) ◽  
pp. 211-220 ◽  
Author(s):  
C. Y. Hopkins
Keyword(s):  
Fatty Acids ◽  
Methyl Ester ◽  
Erucic Acid ◽  
Seed Oil ◽  
Eicosenoic Acid ◽  
Mustard Seed ◽  
Seed Oils ◽  
Fatty Oil ◽  
Total Fatty Acids ◽  
Fractionation Method

The fatty oil of hare's-ear mustard seed (Conringia orientalis L.) was examined. Constants of the oil were determined and a partial separation of the fatty acids was carried out by the methyl ester fractionation method. Palmitic, oleic, linoleic, eicosenoic, erucic, and lignoceric acids were identified. Erucic acid was found to be present in largest amount. The oil resembles rapeseed and other Cruciferae seed oils in this respect. The content of eicosenoic acid is estimated to be not more than 12% of the total fatty acids.

scholarly journals Cucurbita maxima Pumpkin Seed Oil: from the Chemical Properties to the Different Extracting Techniques

2018 ◽  
Vol 46 (2) ◽  
pp. 663-669 ◽  
Author(s):  
Leila REZIG ◽  
Moncef CHOUAIBI ◽  
Rosa Maria OJEDA-AMADOR ◽  
Sergio GOMEZ-ALONSO ◽  
Maria Desamparados SALVADOR ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Bioactive Compounds ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Chemical Properties ◽  
Seed Oils ◽  
Cucurbita Maxima ◽  
Pumpkin Seed ◽  
Pumpkin Seed Oil ◽  
Cold Pressed

Pumpkin seed oils are rich in bioactive compounds such as tocopherols, sterols, β-carotene, and lutein that have, along with some fatty acids, high nutritional value factors. In addition, it has so far been proven that these compounds have a positive effect on human health. The present study mainly aimed at evaluating the chemical composition and the bioactive compounds of pumpkin (Cucurbita maxima) seed oil of the ‘Béjaoui’ Tunisian cultivar using both cold pressing and solvent extraction methods. The seed oils contained substantial amounts of unsaturated fatty acids, particularly oleic and linoleic acids, with values ranging respectively from 28.19% for cold pressed pumpkin seed oil to 30.56% for pumpkin seed oil extracted by pentane and from 43.86% for pumpkin seed oil extracted by pentane to 46.67% for cold pressed pumpkin seed oil of the total amount of fatty acids. Investigations of different seed oils revealed that extraction techniques had significant effects on the antioxidant activity and the γ-tocopherol. Cold pressed pumpkin seed oil revealed the highest γ-tocopherol content (599.33 mg kg-1) and the highest oxidative stability (3.84 h). However, the chloroform/methanol extracted pumpkin seed oil, which is rich in total phenolics (54.41 mg Gallic Acid Equivalent kg-1), was a more effective scavenger of DPPH radicals (250 µmoles Trolox kg-1) than the poor phenolic pumpkin seed oils extracted by hexane and pentane (110 µmoles Trolox kg-1 vs 100 µmoles Trolox kg-1). Based on its unique seed oil features, cold press extracted pumpkin seed may add great value to product innovation in the industrial, nutritional, cosmetic, and pharmaceutical fields.

COMPOSITION OF DELPHINIUM SEED OIL

1956 ◽  
Vol 34 (4) ◽  
pp. 459-464 ◽  
Author(s):  
Mary J. Chisholm ◽  
C. Y. Hopkins
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Seed Oil ◽  
Spectroscopic Analysis ◽  
Eicosenoic Acid ◽  
Seed Oils ◽  
Plant Family ◽  
Fatty Oil ◽  
Fresh Seed ◽  
Total Fatty Acids

The fatty oil of delphinium seed (Delphinium hybridum (Hort.)) was examined. Fresh seed gave an oil composed mainly of glycerides but having 2.8% of free fatty acids. The oil from older seed contained about 50% of free fatty acids, apparently as a result of lipase action in the seed. The total fatty acids were found to include cis-11-eicosenoic acid (18%) and eicosadienoic acid (1%), the latter identified as tetrahydroxyeicosanoic acid. Other acids that were identified and the estimated percentages were: 9-hexadecenoic <1, palmitic 4, linoleic 16, oleic 53, and stearic 1. Spectroscopic analysis indicated a content of 2.5% of octadecatrienoic acid. Eicosoic acids have not been observed previously in the seed oils of this plant family (Ranunculaceae).

scholarly journals Characterization of galactosyl and lactosyl sulfatide species in human serum by MALDI-TOF mass spectrometry

2019 ◽  
Vol 56 (5) ◽  
pp. 574-582
Author(s):  
Atsushi Hori ◽  
Makoto Yamaura ◽  
Sunao Morita ◽  
Takeshi Uehara ◽  
Takayuki Honda ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Human Serum ◽  
Negative Ion ◽  
Simple Method ◽  
Maldi Tof Ms ◽  
Maldi Tof ◽  
Flight Mass Spectrometry ◽  
Sugar Chains ◽  
Tof Ms

Background Sulfatides are found in a variety of tissues and serum lipoproteins. Sulfatide is a molecular species composed of various sphingoid bases, fatty acids and sugar chains; therefore, rapid analysis of the qualitative structure is important in clinical assessment. Methods In this study, sulfatide-rich fractions were isolated from serum lipids, and the sulfatide species were analysed by negative ion mode using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Results Sulfatide species identified in human serum included two different sugar chains, eight sphingoid molecules and various fatty acid side chains including hydroxy fatty acids. In total, 64 galactosyl sulfatides (SM4s) and 49 lactosyl sulfatides (SM3) were identified. Quantitatively, the amount of SM3 was less than 1% of the amount of SM4s. The fatty acids of SM4s of healthy serum ( n = 8) were predominantly C16:0 and a hydroxylation C16:0 (C16:0h), followed by very long chain fatty acids (VLCFAs) predominant species, and SM3 was a major component of VLCFAs. Conclusion This present study described a simple method of human serum sulfatide analysis using MALDI-TOF MS. This method is suitable for clinical laboratories and is likely to increase the understanding of the roles of sulfatide species in both physiological and disease states.

11-OCTADECENOIC ACID AND OTHER FATTY ACIDS OF ASCLEPIAS SYRIACA SEED OIL

1960 ◽  
Vol 38 (6) ◽  
pp. 805-812 ◽  
Author(s):  
Mary J. Chisholm ◽  
C. Y. Hopkins
Keyword(s):  
Fatty Acids ◽  
Seed Oil ◽  
Methyl Esters ◽  
Octadecenoic Acid ◽  
Dihydroxystearic Acid ◽  
Considerable Proportion ◽  
Hexadecenoic Acid ◽  
Seed Oils ◽  
Total Fatty Acids ◽  
Oxidative Splitting

The seed oil of Asclepiassyriaca L., family Asclepidaceae, was examined by gas chromatography and distillation of the methyl esters. The fatty acids were found to include a considerable proportion of cis-11-octadecenoic acid, which has not been observed previously in seed oils. It was obtained as a concentrate [Formula: see text] by low-temperature crystallization of the C18 acids and identified as 11,12-dihydroxystearic acid. The amount of 11-octadecenoic acid in the oil was determined by oxidative splitting of the total fatty acids and estimation of the resulting azelaic and undecanedioic acids by gas chromatography.The C16 acids included 9,12-hexadecadienoic acid, which is rare in seed oils,and an unusually large proportion of 9-hexadecenoic acid. The percentage composition of the fatty acids was estimated from the data as follows: palmitic 4,9-hexadecenoic 10, 9,12-hexadecadienoic 2, stearic < 1, oleic 15, 11-octadecenoic 15, linoleic 53, linolenic < 1. The unsaturated acids have the cis configuration.

scholarly journals COMPARATIVE STUDY OF THE BIOLOGICAL VALUE AND OXIDATIVE STABILITY OF WALNUT AND PUMPKIN-SEED OILS

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
T. Nosenko ◽  
T. Koroluk ◽  
S. Usatuk ◽  
G. Vovk ◽  
T. Kostinova
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Seed Oil ◽  
Oxidation Stability ◽  
Monounsaturated Fatty Acids ◽  
Seed Oils ◽  
Oil Oxidation ◽  
Pumpkin Seed ◽  
Walnut Oil ◽  
Pumpkin Seed Oil

The work is devoted to the study of the biologically active components and the oxidation stability of oils made from non-traditional raw materials such as walnuts and pumpkin seeds. The characteristics that have been determined are the content of phospholipids, carotenoids, chlorophylls, tocopherols, and sterols, the composition of fatty acids and tocopherol homologues, the acidity and oxidation stability of walnut and pumpkin-seed oils. Walnut and pumpkin-seed oils contain a significant amount of polyunsaturated fatty acids, in particular, walnut oil contains linolenic acid and has the ratio ω-3:ω-6 of polyunsaturated fatty acids, which is close to the recommended ratio. The linoleic (polyunsaturated, ω-6) and oleic (monounsaturated) fatty acids dominated in the fatty acid composition of pumpkin-seed oil, and the sum of saturated fatty acids was three times as high as that in walnut oil. An important property of walnut oil is a very high ratio of ω-3:ω-6 polyunsaturated fatty acids, 1:5, which is almost what is recommended by dietitians for the human diet. The difference in the total tocopherol content of the two oil samples was slight, but the composition of tocopherol homologues was very distinctive, i. e. β-tocopherol was the main homo;ogue in the walnut oil and α-tocopherol in the pumpkin-seed oil, respectively. The acidity of the oil samples increased quite rapidly, reaching the value close to 4 mg KOH/g of in 63 days for walnut oil, and in 70 days for pumpkin-seed oil. The oxidative stability of the two oil samples was estimated by changes of the peroxide value during 98 days of oil storage. It has been shown that the induction period of walnut oil oxidation, defined as the start of an increase of the peroxide index, was 56 days, in spite of a high content of polyunsaturated fatty acids, particularly, linolenic acid. The duration of the induction period of pumpkin-seed oil oxidation and the shelf life of this oil were 70 and 98 days, respectively, while the shelf life of walnut oil was about 90 days. The higher resistance of pumpkin-seed oil to oxidative damage is primarily due to the fatty acid composition of this oil, namely to a high content of saturated and monounsaturated fatty acids and almost twice as low a content of polyunsaturated fatty acids compared to that of walnut oil. Both oils can be recommended as a valuable source of polyunsaturated fatty acids, antioxidants, and vitamins for human nutrition.

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