Chemical composition and resistance to oxidation of high-oleic rapeseed oil pressed from microwave pre-treated intact and de-hulled seeds

The influence of a microwave (MV) pre-treatment (3, 6, 9 min, 800W) on the physicochemical properties of high-oleic rapeseed oil prepared from intact (HORO) and de-hulled seeds (DHORO) was investigated in this study. A control DHORO contained higher levels of total tocopherols and carotenoids, while higher concentrations of total phenolic compounds and chlorophylls were detected in the HORO. The MV pre-treatment caused a decrease in the unsaturated fatty acids content that was more evident for the DHOROs. The microwaving time significantly affected phytochemical contents and the color of both types of oils. A vast increase in canolol concentration was noticeable following 9 min of microwaving, which increased 506- and 155-fold in the HORO and DHORO, respectively. At the same time, the antioxidant capacity of oil produced from MV pre-treated seeds for 9 min was nearly 4 times higher than that of the control oil for both types of oils

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Antioxidant and fatty acid profile of gabiroba seed (Campomanesisa Xanthocarpa Berg)

Food Science and Technology ◽

10.1590/s0101-20612012005000045 ◽

2012 ◽

Vol 32 (2) ◽

pp. 234-238 ◽

Cited By ~ 3

Author(s):

Marli da Silva Santos ◽

Obdulio Gomes Miguel ◽

Carmen Lúcia Oliveira Petkowicz ◽

Lys Mary Bileski Cândido

Keyword(s):

Fatty Acids ◽

Oleic Acid ◽

Fatty Acid ◽

Fatty Acid Profile ◽

Unsaturated Fatty Acids ◽

Ethanol Extract ◽

Solvent Polarity ◽

Antioxidant Potential ◽

Total Phenolic ◽

Total Phenolic Compounds

This study aimed to evaluate the antioxidant potential and fatty acid profile of gabiroba (Campomanesia xanthocarpa Berg) seeds. In order to obtain the extract, the seeds were dried, crushed, and subjected to sequential extraction by maceration and percolation in a modified soxhlet extractor using solvent polarity gradient composed of hexane, chloroform, ethyl acetate, and alcohol, respectively. The extraction time was six hours. The ethanol extract showed the highest antioxidant potential, given by the EC50 value and the amount of total phenolic compounds. High amounts of unsaturated fatty acids were found in the oil studied, especially the oleic acid.

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Characterization of two Moroccan watermelon seeds oil varieties by three different extraction methods

OCL ◽

10.1051/ocl/2020010 ◽

2020 ◽

Vol 27 ◽

pp. 13

Author(s):

Ihssane Ouassor ◽

Younes Aqil ◽

Walid Belmaghraoui ◽

Souad El Hajjaji

Keyword(s):

Fatty Acids ◽

Phenolic Compounds ◽

Unsaturated Fatty Acids ◽

Citrullus Lanatus ◽

Antioxidant Properties ◽

Total Phenolic ◽

Seed Oils ◽

Total Phenolic Compounds ◽

Ultrasound Assisted Extraction ◽

Soxhlet Apparatus

The purpose of this study is to assess and evaluate the physicochemical properties of the seed oils of two Moroccan varieties of watermelon “Citrullus lanatus” extracted by three different techniques, a mechanical process using cold press, and two chemical processes using a Soxhlet apparatus and a sonotrode ultrasound assisted extraction (UAE) using n-hexane. The total phenolic compounds (TPC) and antioxidant properties against the DPPH radicals (2,2-diphenyl-1-picrylhydrazyl) were also studied. The seed oils of both varieties of watermelon exhibited high concentrations of unsaturated fatty acids with the predominance of linoleic and oleic fatty acids. The primary sterol was β-sitosterol, and high levels of total tocopherols were observed. Ɣ-tocopherol was the predominant tocopherol in all tested oils. The Citrullus lanatus var. lanatus variety seeds oil exhibited the highest TPC value (89.5 ± 0.06 mg EGA/100 g; EGA: gallic acid equivalent), with 82.4 ± 0.03% DPPH free radical inhibition efficiency. Nevertheless, all tested seeds oils showed a significant amount of total phenolic compounds and a good inhibition against DPPH radicals ranging from 51.1 ± 0.1% to 84.8 ± 0.04%. In addition, the influence of the ultrasonic extraction parameters was studied using two different solvents (n-hexane and the methanol-chloroform mixture), with different particle sizes (500–300 µm), duration (10 and 20 minutes), cycle (1–0.5), amplitude (80–100%) and solvent/seed ratios (1:5 and 1:10), and the seed roasting parameter was also studied. The oil yield was mainly affected by the extraction solvent, then the solvent/seed ratio and the duration, respectively.

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Analysis of biochemical composition and antioxidant properties of nuts sold in the consumer marke

Proceedings of the Voronezh State University of Engineering Technologies ◽

10.20914/2310-1202-2020-2-124-130 ◽

2020 ◽

Vol 82 (2) ◽

pp. 124-130

Author(s):

L. P. Nilova ◽

S. M. Malyutenkova

Keyword(s):

Fatty Acids ◽

Vitamin E ◽

Phenolic Compounds ◽

Biochemical Composition ◽

Unsaturated Fatty Acids ◽

Antioxidant Properties ◽

Water Soluble ◽

Total Phenolic ◽

Consumer Market ◽

Triton X

The results of studies of the biochemical composition and antioxidant properties of nuts sold in the consumer market of St. Petersburg were presented in the work. The objects of research were kernels of nuts: sweet almonds, hazelnuts, cashews, walnuts. Total Soxhlet lipids, fatty acid composition, vitamin E, fractional composition of tocopherols and phytosterols, total phenolic compounds and flavonoids, antioxidant activity by FRAP with ferric chloride, o-phenanthroline and Triton X 100 were determined in nuts. Nuts varied in lipid content (42.6–65.4%) with a predominance of unsaturated fatty acids from 80.4 to 92.4 relative%. Oleic acid prevailed in the fatty acids of almonds, hazelnuts and cashews, while linoleic acid prevailed in walnuts. Walnuts contained the highest amount of polyunsaturated fatty acids. The antioxidant properties of nuts were formed by a complex of water and fat-soluble antioxidants. Fat-soluble antioxidants included vitamin E with a predominance of ?-tocopherol in the kernels of sweet almonds and hazelnuts, ?-tocopherol - in walnuts and cashews. Only sweet almond kernels contained all the tocopherol fractions. ?- and ?-tocopherols were absent in hazelnut lipids, while ?-tocopherols were absent in cashews and walnuts. ?-sitosterol, campesterol and stigmasterol with a predominance of ?-sitosterol were identified in the composition of phytosterols in all nut kernels. Water-soluble antioxidants are mainly represented by phenolic compounds, the amount of which varies widely depending on the type of nuts: cashews

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EFFECTS OF Citrus hystryx AS FAT PROTECTOR ON UNSATURATED FATTY ACIDS, CHOLESTEROL AND CHEMICAL COMPOSITION OF LAMB MEAT

Journal of the Indonesian Tropical Animal Agriculture ◽

10.14710/jitaa.41.1.45-49 ◽

2016 ◽

Vol 41 (1) ◽

pp. 45-49 ◽

Cited By ~ 1

Author(s):

N.C. Tiven ◽

I. P. Siwa ◽

L. Joris

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Chemical Composition ◽

Unsaturated Fatty Acids ◽

Basal Diet ◽

Cooking Oil ◽

Lamb Meat ◽

Randomized Design ◽

Completely Randomized Design ◽

Range Test

This study was conducted to determine the effect of Citrus hystrix as fat protector on unsaturated fatty acids, cholesterol and chemical composition of lamb meat. The research design applied was completely randomized design with 3 treatments and 5 replications. Fifteen local male lambs aged 9-12 months weighing 14-17 kg, were divided into 3 groups of different diet treatments (P0 : sheeps were only given a basal diet; P1 : sheeps are given basal diet and 3% cooking oil; P2 : sheeps are given basal diet, 3% cooking oil and protected by 3% Citrus hystrix powder). The data were analyzed by analysis of variance, the differences among treatments were tested by Duncan’s New Multiple Range Test. The results showed meat from sheeps that consume P2 diet has a total fatty acid and polyunsaturated fatty acids content were higher (P

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Amaranthus Cruentus Taxonomy, Botanical Description, and Review of its Seed Chemical Composition

Natural Product Communications ◽

10.1177/1934578x19844141 ◽

2019 ◽

Vol 14 (5) ◽

pp. 1934578X1984414 ◽

Cited By ~ 4

Author(s):

Katarzyna Wolosik ◽

Agnieszka Markowska

Keyword(s):

Fatty Acids ◽

Amino Acid ◽

Chemical Composition ◽

Amino Acid Composition ◽

Unsaturated Fatty Acids ◽

Antihypertensive Activity ◽

Amaranthus Cruentus ◽

High Protein Content ◽

Botanical Description ◽

Significant Chemical

Among 60-70 species of Amaranthaceae, only three are grain-producing species and Amaranthus cruentus is one of them. It stands out for its significant chemical composition. The high protein content and amino acid composition give amaranth medicinal benefits such as cholesterol lowering, antioxidant, anticancer, anti-allergic, and antihypertensive activity. The fixed oil yield obtained by cold-pressing the grain is only 7-8%, but these lipids are valuable due to the presence of unsaturated fatty acids, tocopherols, tocotrienols, phytosterols, and squalene, which are not present in the same composition in other common oils. Among them, squalene is highly desirable.

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EFFECTS OF SATURATED FAT IN RATS FED RAPESEED OIL

Canadian Journal of Biochemistry and Physiology ◽

10.1139/y63-072 ◽

1963 ◽

Vol 41 (1) ◽

pp. 605-612 ◽

Cited By ~ 7

Author(s):

Joyce L. Beare ◽

J. A. Campbell ◽

C. G. Youngs ◽

B. M. Craig

Keyword(s):

Fatty Acids ◽

Erucic Acid ◽

Palmitic Acid ◽

Rapeseed Oil ◽

Unsaturated Fatty Acids ◽

Corn Oil ◽

Methyl Esters ◽

Saturated Fatty Acids ◽

Weight Gains ◽

HIGHLY CONCENTRATED ENERGY SOURCE FOR BROILERS

Adaptive Fodder Production ◽

10.33814/afp-2222-5366-2019-4-36-47 ◽

2019 ◽

Vol 2019 (4) ◽

pp. 36-47

Author(s):

Anatoly Gaganov ◽

Zinaida Zverkova ◽

Bella Osipyan

Keyword(s):

Fatty Acids ◽

Sunflower Oil ◽

Broiler Chickens ◽

Rapeseed Oil ◽

Unsaturated Fatty Acids ◽

Live Weight ◽

Control Group ◽

Forage Production ◽

Rapeseed Cultivar ◽

Feed Costs

Studies were conducted on the use of oil obtained from rapeseed cultivar 'Podmoskovnyj' selection of Federal Williams Research Center of Forage Production and Agroecology in feeding broiler chickens. The experiments were carried out on chickens cross-country "ROSS-308". They were grown in a cell battery. For the experiment, 5 groups were formed. In the start and finish periods, the control group received 2.5 and 3.3% sunflower oil. In the experimental groups, sunflower oil was replaced with rapeseed in the following amounts: the first — 1.0 and 1.0%, the second — 1.5 and 1.7%, the third — 2.0 and 2.5% and the fourth — 2.5 and 3.3%. Feeding was carried out with dry loose feed from a day old. Studies have found that rapeseed oil had less saturated and polyunsaturated fatty acids, but more unsaturated fatty acids. The amount of erucic acid was 0.20%. The digestibility of nutrients was high and practically did not differ from the control variant, as was the use of nitrogen. The inclusion of rapeseed oil in the composition of feed for broilers did not have a significant impact on the increase in live weight and feed costs. The cost of feed with increasing rapeseed oil in their composition decreased, and the efficiency of converting feed into products increased slightly. Compound feeds with rapeseed oil were not inferior in terms of the efficiency of using compound feed containing sunflower oil.

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Improvement of Chemical Composition of Tisochrysis lutea Grown Mixotrophically under Nitrogen Depletion towards Biodiesel Production

Molecules ◽

10.3390/molecules25204609 ◽

2020 ◽

Vol 25 (20) ◽

pp. 4609

Author(s):

Adel W. Almutairi

Keyword(s):

Fatty Acids ◽

Chemical Composition ◽

Unsaturated Fatty Acids ◽

Nitrogen Deficiency ◽

Cetane Number ◽

Acid Methyl Ester ◽

Biodiesel Production ◽

Nitrogen Depletion ◽

Tisochrysis Lutea ◽

The Impact

In the present study, the marine microalga Tisochrysis lutea was cultivated mixotrophically in F2 growth medium with sodium acetate as exogenous carbon source. The medium was composed of different concentrations of nitrogen to determine the impact of nitrogen depletion on cellular growth and chemical composition. Nitrogen depletion led to severely decreased growth and protein content. However, mild nitrogen depletion (0.22 mM NaNO3) led to maximum lipid yield. The fatty acid methyl ester profile also showed increased unsaturation as the nitrogen content decreased. Growth in nitrogen-free medium increased the proportions of mono- and poly-unsaturated fatty acids, while the proportion of saturated fatty acids decreased. Growth under all tested nitrogen levels showed undetectable fatty acids with ≥4 double bonds, indicating these fatty acids had oxidative stability. In addition, all tested nitrogen concentrations led to specific gravity, kinematic viscosity, iodine value, and cetane number that meet the standards for Europe and the U.S.A. However, growth in the presence of nitrogen deficiency enhanced the higher heating value of the resulting biodiesel, a clear advantage from the perspective of energy efficiency. Thus, mixotrophic cultivation of T. lutea with nitrogen limitation provides a promising approach to achieve high lipid productivity and production of high-quality biodiesel.

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