scholarly journals Determination of oil content and fatty acids profile in sunflower seeds through near infra-red spectroscopy under various treatments of potassium nitrate, zinc sulphate and gibberellic acid

2016 ◽  
Vol 9 (4) ◽  
pp. 22-31
Keyword(s):  
Fatty Acids ◽  
Gibberellic Acid ◽  
Oil Content ◽  
Zinc Sulphate ◽  
Potassium Nitrate ◽  
Sunflower Seeds ◽  
Fatty Acids Profile ◽  
Infra Red

Evaluation of fatty acid composition among selected amaranth grains grown in two consecutive years

Biologia ◽  
2013 ◽  
Vol 68 (4) ◽  
Author(s):  
Andrea Hlinková ◽  
Adriána Bednárová ◽  
Michaela Havrlentová ◽  
Jana Šupová ◽  
Iveta Čičová
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Strong Positive Correlation ◽  
Amaranthus Cruentus ◽  
Amaranthus Hypochondriacus ◽  
Fatty Acids Profile ◽  
Linoleic Acid Level ◽  
Amaranthus Spp

AbstractThe oil of amaranth grain (Amaranthus spp.) is a rich source of poly-unsaturated fatty acids. In this study, we tested 10 amaranth samples representing two species (Amaranthus cruentus and Amaranthus hypochondriacus) in two consecutive years (2010, 2011). Grain oils were analysed by gas chromatography for their fatty acids profile. In 2010, oil content ranged from 6.4–8.2% for A. cruentus and 6.3–7.9% for A. hypochondriacus. In 2011, the level was 7.1–8.2% and 6.6–8.7% for A. cruentus and A. hypochondriacus, respectively. Linoleic, palmitic, and oleic acids were dominant fatty acids in all of the oil samples. The essential linoleic acid level was 33.3–38.7% (A. cruentus) and 31.7–47.5% (A. hypochondriacus) in 2010 and 34.6–39.9% (A. cruentus) and 34–44.5% (A. hypochondriacus) in 2011. The minority fatty acids, i.e. stearic, α-linolenic, and arachidic acids were also observed. Eicosenoic and behenic acids were present in the grain in trace amounts. Statistical evaluation showed a significant effect of year and species of amaranth on the levels of certain fatty acids. There was a strong positive correlation between oil content and oleic acid, and a negative correlation between oleic acid and either of the other two fatty acids, linoleic and α-linolenic ones.

Variation of seed oil content, oil yield, and fatty acids profile in Iranian Nigella sativa L. landraces

2020 ◽  
Vol 149 ◽  
pp. 112367
Author(s):  
Mohadeseh Kiani ◽  
Iraj Alahdadi ◽  
Elias Soltani ◽  
Birte Boelt ◽  
Fatemeh Benakashani
Keyword(s):  
Fatty Acids ◽  
Oil Content ◽  
Seed Oil ◽  
Nigella Sativa ◽  
Oil Yield ◽  
Seed Oil Content ◽  
Fatty Acids Profile

scholarly journals The normal vibrations of carbonate and nitrate ions

1931 ◽  
Vol 134 (823) ◽  
pp. 265-277 ◽  
Keyword(s):  
Raman Spectrum ◽  
Raman Spectra ◽  
Raman Effect ◽  
Normal Modes ◽  
Potassium Nitrate ◽  
Nitrate Ions ◽  
Carbonate Ion ◽  
Infra Red ◽  
Modes Of Vibration

When the Raman effect was first discovered, it was believed that every line in the Raman spectrum referred to some characteristic vibration of the scatter­ing molecule. Later the tendency was to regard the lines as due to transitions between states of vibration of the molecule, so that the energies corresponded not to energies of vibration directly, but to differences in the energy of vibra­tion of two different modes. It is now realised that the infra-red spectrum of a substance and the Raman spectrum which it scatters give complementary information. Certain modes of vibration are represented solely in the infra­red spectrum, others are found only in the Raman spectrum, while others may appear in both spectra. Quite early a rough criterion on the basis of symmetry was put forward by Schaefer, for the determination of whether or not a particular vibration was to be expected in the Raman effect. Recently a selection rule has been formulated by Placzek; no vibration will appear as a fundamental in the Raman effect if it is such that any symmetrical operation upon it can change the signs of the displacements of the normal co-ordinates, without altering the energy. It is clear that a knowledge of the normal modes of vibration of the molecule under discussion must precede the application of any such rule, and it is the purpose of the present communication to discuss the normal modes of vibration of the carbonate and nitrate ions. In 1929 the writer showed that it was possible to obtain Raman spectra from powdered crystals, and the discovery was made when using powdered crystals of potassium nitrate. The method was applied first to carbonates and nitrates, so it became of interest to attempt to fix the structure of the anions of these salts by means of the Raman spectra combined with the infra-red data. In what follows the carbonate ion will first be dealt with in some detail, and then the nitrate ion can be treated summarily owing to the similarity of structure of the two ions.

scholarly journals Oil content and fatty acids composition of poppy seeds cultivated in two localities of Slovakia

2016 ◽  
Vol 62 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Andrea Lančaričová ◽  
Michaela Havrlentová ◽  
Darina Muchová ◽  
Adriána Bednárová
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Oil Content ◽  
Slovak Republic ◽  
Weather Conditions ◽  
Acid Value ◽  
Fatty Acids Profile ◽  
Saponification Value ◽  
Poppy Seeds ◽  
Linoleic Acid Level

Abstract Oil content, fatty acids profile, acid and saponification values of poppy seeds grown on two localities of the Slovak Republic were evaluated in the study. Statistically significant effects of locality, genotype and their interaction (P < 0.05) for numerous descriptors were proved by non-parametric tests. Results confirmed that variation in the analysed parameters was influenced by the colour of seeds. Ochre variety Redy contained the highest oil level in both localities (49.9 and 52.4%) and linoleic acid level (74.3 and 71.6%). White-seeded Racek and Albín had the highest acid value (2.8 and 2.4% of free fatty acids) and grey-seeded Malsar and blue-seeded Maratón contained the highest saponification value. Buddha, a high-morphine poppy variety, differed significantly in all monitored parameters. High negative interrelation between linoleic and oleic acids levels was observed. Oil content was positively correlated with linoleic acid and negatively with oleic acid. Weather conditions at the end of vegetation influenced the accumulation of oil and essential linoleic acid.

Determination of the fatty acids and oil content of evening primrose (Oenothera biennis L.)

1993 ◽  
Vol 26 (3) ◽  
pp. 181-186 ◽  
Author(s):  
William A. Court ◽  
John G. Hendel ◽  
Robert Pocs
Keyword(s):  
Fatty Acids ◽  
Oil Content ◽  
Oenothera Biennis ◽  
Evening Primrose

scholarly journals Fatty acids composition in fruits of wild rose species

2011 ◽  
Vol 74 (3) ◽  
pp. 229-235 ◽  
Author(s):  
Renata Nowak
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Octadecenoic Acid ◽  
Eicosenoic Acid ◽  
Dry Mass ◽  
Average Composition ◽  
Fatty Acids Profile ◽  
Fatty Acid Compositions

The oil content and fatty acids profile of a number of Polish wild species of rose fruits were examined by GC. The total fatty acid contents ranged from 6.5% to 12.9% of dry mass in fruits. The composition of oils was similar in the investigated species. 17 components were identified. An average composition was estimated as follows: linoleic acid (44.4-55.7%), a-linolenic acid (18.6-31.4%), oleic acid (13.5-20.3%), palmitic acid (2.3-3.3%), stearic acid (1-2.5%), octadecenoic acid (0.38-0.72%), eicosenoic acid (0.3-0.7%), eicosadienoic acid (0-0.16%), erucic acid (0.03-0.17%) and minor fatty acids. The results indicate that rose fruits are a rich source of unsaturated fatty acids, especially in <em>R. rubiginosa</em>, <em>R. rugosa</em> and <em>R. dumalis</em>. There were statistically significant (p&lt;0.05) differences in fatty acid compositions of some species. Fatty acids were suggested to have a potential chemotaxonomic value in this genus.

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