High incorporation of esential fatty acids by the Rotifer Brachionus plicatilis fed on the Prymnesiophyte Alga Pavlova lutheri

1989 ◽  
Vol 40 (6) ◽  
pp. 645 ◽  
Author(s):  
PD Nichols ◽  
DG Holdsworth ◽  
JK Volkman ◽  
M Daintith ◽  
S Allanson
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Brachionus Plicatilis ◽  
Essential Fatty Acids ◽  
Total Lipid Content ◽  
Pavlova Lutheri ◽  
Rotifer Brachionus Plicatilis ◽  
Total Fatty Acids ◽  
High Incorporation ◽  
Fatty Acid Compositions

The lipid and fatty acid compositions of rotifers (Brachionus plicatilis) fed on yeast or on the unicellular prymnesiophyte Pavlova lutheri, an alga commonly used in Australian hatcheries, were compared by TLC-FID, GC and GC-MS. Significantly higher relative proportions of energy-rich triacylglycerol were present in the Pavlova-fed rotifers than in the yeast-fed animals, and total lipid content reached a maximum between 12 and 24 h. High incorporation of the essential fatty acids eicosapentaenoic acid (EPA; 20: 5ω3) and docosahexaenoic acid (DHA; 22:6ω3) occurred in the Pavlova-fed rotifers. EPA and DHA content was 11.6% of total fatty acids after 3 h of feeding and reached 20 and 23% after 24 and 48 h respectively. The proportion of essential fatty acids in rotifers fed Pavlova compares very favourably with data obtained by overseas workers using a variety of microalgae and dietary supplements. On the basis of fatty acid composition alone, these results confirm the suitability of P. lutheri as a feedstock for Australian mariculture operations.

Alpha-Linolenic Acid Content of Commonly Available Nuts in Hangzhou

2006 ◽  
Vol 76 (1) ◽  
pp. 18-21 ◽  
Author(s):  
Duo Li ◽  
Ting Yao ◽  
Sirithon Siriamornpun
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Cannabis Sativa ◽  
Total Lipid Content ◽  
Alpha Linolenic Acid ◽  
Pufa Intake ◽  
Pine Nut ◽  
Total Fatty Acids ◽  
Total Pufa ◽  
Fatty Acid Compositions

The total lipid content of eight species of nuts available in Hangzhou ranged from 49.5 g/100 g weight in Cannabis sativa to 75.4 g/100 g in walnut. The predominant content of lipid is triacylglycerol, ranging from 91.1% in Cannabis sativa to 98.4% in macadamia. There were two polyunsaturated fatty acids (PUFA) in all nuts analyzed; 18:2n-6 and 18:3n-3. The content of 18:3n-3 ranging from 0.2% in almond to 15.2% in Cannabis sativa, 18:2n-6 ranged from 2.5% in macadamia to 61.6% in pine nut. The proportion of total PUFA in analyzed eight nut species ranging from 2.8% in macadamia to 71.7% in walnut (p < 0.001). Monounsaturated fatty acid composition ranged from 18.0% in Cannabis sativa to 82.6% in macadamia (p < 0.001). The proportion of saturated fatty acid ranged from 7.4% in filbert to 14.7% of total fatty acids in macadamia (p < 0.001). No C20 fatty acids were detected in any of the samples in the present study. The lipids content and fatty acid compositions in analyzed samples were varied between nut species. Cannabis sativa and walnut contained relatively high 18:3n-3, consumption of several these nuts each day can contribute to n-3 PUFA intake, especially for the vegetarian population.

Chlorella vulgaris as a Source of Essential Fatty Acids and Micronutrients: A Brief Commentary

2017 ◽  
Vol 10 (1) ◽  
pp. 92-99 ◽  
Author(s):  
Hércules Rezende Freitas
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Culture Medium ◽  
Essential Fatty Acids ◽  
Total Lipid Content ◽  
Dietary Quality ◽  
Negative Effects ◽  
Algae Biomass ◽  
Dietary Consumption ◽  
Acid Consumption

Polyunsaturated fatty acids (PUFAs) comprise about 35-40% of the total lipid content from green algaeChlorella, reaching up to 24% linoleic acid and 27% α-linolenic acid inC. vulgaris. Also, microalgae nutrient composition may be modulated by changes in the culture medium, increasing fatty acid and microelement concentrations in the algae biomass. PUFAs, such as α-linolenic (n-3) and linoleic (n-6) acids, as well as its derivatives, are considered essential for dietary consumption, and their ability to regulate body chemistry has been recently explored in depth. A balanced fatty acid consumption is shown to counteract the negative effects of western diets, such as chronic inflammation and glucose intolerance. In this brief commentary, technological and practical uses ofC. vulgarisare explored as means to improve dietary quality and, ultimately, human health.

scholarly journals Evaluation of Chemical Variability of Cured Vanilla Beans (Vanilla tahitensis and Vanilla planifolia)

2009 ◽  
Vol 4 (10) ◽  
pp. 1934578X0900401 ◽  
Author(s):  
Christel Brunschwig ◽  
François Xavier Collard ◽  
Jean-Pierre Bianchini ◽  
Phila Raharivelomanana
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dry Matter ◽  
Monounsaturated Fatty Acids ◽  
Vanilla Planifolia ◽  
Chemical Variability ◽  
Total Fatty Acids ◽  
Curing Method ◽  
Fatty Acid Compositions

In order to establish a chemical fingerprint of vanilla diversity, thirty samples of V. planifolia J. W. Moore and V. tahitensis G. Jackson cured beans from seven producing countries were examined for their aroma and fatty acid contents. Both fatty acid and aroma compositions were found to vary between vanilla species and origins. Vanillin was found in higher amounts in V. planifolia (1.7-3.6% of dry matter) than in V. tahitensis (1.0-2.0%), and anisyl compounds were found in lower amounts in V. planifolia (0.05%) than in V. tahitensis (1.4%-2.1%). Ten common and long chain monounsaturated fatty acids (LCFA) were identified and were found to be characteristic of the vanilla origin. LCFA derived from secondary metabolites have discriminating compositions as they reach 5.9% and 15.8% of total fatty acids, respectively in V. tahitensis and V. planifolia. This study highlights the role of the curing method as vanilla cured beans of two different species cultivated in the same country were found to have quite similar fatty acid compositions.

FATTY ACID COMPOSITION OF NORMAL MINK TISSUES

1966 ◽  
Vol 44 (2) ◽  
pp. 179-185 ◽  
Author(s):  
B. L. Walker ◽  
V. F. Lishchenko
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Essential Fatty Acids ◽  
Methyl Esters ◽  
Dietary Factors ◽  
Gas Liquid Chromatography ◽  
Healthy Female ◽  
Kidney Liver ◽  
Layer Chromatography ◽  
Fatty Acid Compositions

Lipids, extracted from the adrenals, brain, erythrocytes, heart, kidney, liver, plasma, and spleen of normal healthy female mink, were transesterified with 1% sulphuric acid in methanol, and the resulting methyl esters were analyzed by gas–liquid chromatography after purification by thin-layer chromatography. All of the tissues examined contained higher concentrations of unsaturated than of saturated acids, the highest levels of unsaturated acids occurring in the lipids of heart, adrenals, and plasma, and of the essential fatty acids (ω6 series, with six carbon atoms after last double bond) in plasma, erythrocyte, and kidney lipids. The fatty acid compositions of mink tissues resemble those reported in the literature for the rat; detailed comparisons are not possible because of the known influence of dietary factors on tissue fatty acids.

scholarly journals Long-chain polyene status of preterm infants with regard to the fatty acid composition of their diet: Comparison between absolute and relative fatty acid levels in plasma and erythrocyte phospholipids

1995 ◽  
Vol 73 (3) ◽  
pp. 405-422 ◽  
Author(s):  
Magritha M. H. P. Foreman-Van Drongelen ◽  
Adriana C. V. Houwelingen ◽  
Arnold D. M. Kester ◽  
André E. P. De Jong ◽  
Carlos E. Blanco ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Venous Blood ◽  
Group Differences ◽  
Lower Fatty Acid ◽  
Total Fatty Acids ◽  
The Absolute ◽  
Erythrocyte Phospholipids ◽  
Long Chain ◽  
Fatty Acid Compositions

The long-chain polyene (LCP) status of thirty-nine premature infants (birth weight < 1800 g) was evaluated. Twenty-seven infants were fed on an artificial formula, twelve received their own mother's breast milk. Fatty acid compositions of both plasma and erythrocyte (RBC) phospholipids (PL) were determined in umbilical venous blood and in weekly postnatal blood samples until the 28th day of life. Individual fatty acid levels were expressed as absolute quantities (mg fatty acid/I plasma or RBC suspension) and as relative (mg/100 mg total fatty acids) values. The changes with time in the absolute values for 22:6n-3 and 20:4n-6 in plasma were strikingly different from those of the relative values for these fatty acids. In plasma PL the inter-group differences in the absolute postnatal values for 22:6n-3 (P < 0·0005) and 20:4n-6 (P < 0·05) and the relative values for 22:6n-3 (P < 0·02) were significant, with lower fatty acid values in the formula-fed infants. In RBC PL, no significant inter-group differences in the postnatal 22: 6n-3 and 20: 4n-6 values were found. Based on the assumption that it is desirable for formula-fed infants to achieve postnatal plasma LCP values at least comparable with those found in infants fed on human milk, the findings of the present study indicate that both n-3 and n-6 LCP should be added to preterm infant formulas. Moreover, the additional importance of absolute fatty acid levels was demonstrated, although analytical procedures need to be standardized to enable effective comparison of results from different research groups.

Impact of temperature and growth phases on lipid composition and fatty acid profile of a thermophilic Bacillariophyta strain related to the genus Halamphora from north-eastern Tunisia

2020 ◽  
Vol 100 (4) ◽  
pp. 529-536
Author(s):  
Nahla Bouzidi ◽  
Fatma Zili ◽  
Federico García-Maroto ◽  
Diego López Alonso ◽  
Hatem Ben Ouada
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Hot Spring ◽  
Essential Fatty Acids ◽  
Lipid Fraction ◽  
Dry Weight ◽  
Stationary Growth Phase ◽  
Total Fatty Acids ◽  
Temperature Levels

AbstractA thermo-tolerant diatom species has been isolated from Tunisian hot spring water (40°C). The isolated diatom has been molecularly identified and classified into the genus Halamphora. The growth kinetics, lipid content and distribution of fatty acids were assessed at 20 and 30°C temperature levels and constant irradiance in controlled batch cultures (11 days). Halamphora sp. showed better growth (μ = 0.53 day−1) and a higher lipid yield (25% of the dry weight) at a higher temperature (30°C). Under the two temperatures tested, the highest lipid and fatty acid contents were mainly reached during the stationary growth phase. The fatty acid profile showed a significant content of two essential fatty acids, eicosapentaenoic acid (EPA, 20:5n-3) and arachidonic acid (AA, 20:4n-6), reaching ~15% and ~21% of the total fatty acids, respectively, at 20°C and 30°C. The distribution of the different components of the fatty acids showed that EPA and AA were mainly located in the neutral lipid fraction in the stationary phase.

Fatty acids of Aceraceae seed oils

1968 ◽  
Vol 46 (9) ◽  
pp. 999-1002 ◽  
Author(s):  
C. Y. Hopkins ◽  
A. W. Jevans ◽  
M. J. Chisholm
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Acer Rubrum ◽  
The Other ◽  
Seed Oils ◽  
Acer Negundo ◽  
The Family ◽  
Total Fatty Acids ◽  
Fatty Acid Compositions

Seed oils of 18 species of Aceraceae (maple family) were examined and their fatty acid compositions were determined. Those of all but one species had substantial amounts of C20, C22, and C24cis-monoenoic acids. Acer rubrum, typical of the group, had 7% eicosenoic, 13% docosenoic, and 4% tetracosenoic acid in the total fatty acids of its oil. The chief isomers, identified in the oil of A. saccharum, were cis-11-eicosenoic, cis-13-docosenoic, and cis-15-tetracosenoic acids. The oils of Dipteronia sinensis and Acer negundo were much like the other Acer oils in composition, but that of A. saccharinum was composed almost entirely of the ordinary C16 and C18 fatty acids. The results are discussed in relation to the taxonomy of the family.

Criteria for essential fatty acid deficiency in plasma as assessed by capillary column gas-liquid chromatography.

1987 ◽  
Vol 33 (10) ◽  
pp. 1869-1873 ◽  
Author(s):  
E N Siguel ◽  
K M Chee ◽  
J X Gong ◽  
E J Schaefer
Keyword(s):  
Fatty Acids ◽  
Liquid Chromatography ◽  
Fatty Acid ◽  
Capillary Column ◽  
Unsaturated Fatty Acids ◽  
Vaccenic Acid ◽  
Essential Fatty Acids ◽  
Gas Liquid Chromatography ◽  
Mead Acid ◽  
Total Fatty Acids

Abstract To develop criteria for deficiency of essential fatty acids (EFA), we used capillary-column gas-liquid chromatography to determine fatty acids (percentage of total fatty acids) in plasma obtained in the fasting state from 56 reference subjects and from 10 patients with intestinal fat malabsorption and suspected EFA deficiency. Fatty acid evaluations (percentage of total fatty acids) that allowed for a clear distinction (P less than 0.01) between reference subjects and patients, based on values two standard deviations below or above the reference mean, included values for linoleic acid (18:2w6) below 27%, and values for palmitic acid (16:0), palmitoleic acid (16:1w7), oleic acid (18:1w9), vaccenic acid (18:1w7), and Mead acid (20:3w9) exceeding 21%, 2.6%, 23.3%, 2.1%, and 0.21%, respectively. Ratios of total EFA to total non-EFA of less than 0.60 and of Mead acid to arachidonic acid of greater than 0.025 also served to identify patients, and were not found in reference subjects. Significant inverse correlations between percentages of plasma EFA and plasma mono-unsaturated fatty acids were noted. Our reference-interval data can be used to assess normality of plasma EFA status.

scholarly journals Fatty Acids Composition of Two Holothuroidea Species – Cucumaria japonica and C. okhotensis

2007 ◽  
Vol 2 (8) ◽  
pp. 1934578X0700200
Author(s):  
Viatcheslav Rybin ◽  
Konstantin Pavel ◽  
Eugene Boltenkov ◽  
Anastasiya Karlina ◽  
Galina Timchishina ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Eicosapentaenoic Acid ◽  
Body Wall ◽  
Biologically Active ◽  
Fatty Acids Composition ◽  
Total Fatty Acids ◽  
Species Specific ◽  
Cucumaria Japonica ◽  
Fatty Acid Compositions

The fatty acid compositions of the lipids of two holothurian species ( Cucumaria japonica and C. okhotensis) were investigated. High contents of 12-methyltetradecanoic acid and eicosapentaenoic acid (up to 17.7 % and 28.4% of total fatty acids, respectively) in the lipids of both species were revealed. Species specific differences in the content of 23:1 n-9 fatty acid in the lipids from viscera and body wall were found. In C. japonica, the viscera to body wall ratio was 0.07, while in C. okhotensis this ratio was 0.28. The fatty acid compositions of the lipids from both investigated holothurian species permit their use for the manufacturing of foodstuff, as well as for biologically active additives.

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