scholarly journals Effect of Duration of Dietary Rapeseed and Soybean Oil Feeding on Physical Characteristics, Fatty Acid Profile, and Oxidative Stability of Pig Backfat

Animals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 193 ◽  
Author(s):  
Monika Okrouhlá ◽  
Roman Stupka ◽  
Jaroslav Čítek ◽  
Nicole Lebedová ◽  
Kateřina Zadinová
Keyword(s):  
Soybean Oil ◽  
Oxidative Stability ◽  
Vegetable Oils ◽  
Acid Content ◽  
Rapeseed Oil ◽  
Linoleic Acid Content ◽  
The Other ◽  
Linolenic Acid Content ◽  
Feeding Duration ◽  
Negative Effect

This study compared the effect of two vegetable oils and their feeding duration on pig backfat quality. The experiment was conducted with 60 DanBred pigs that were fed a diet supplemented (40 g/kg) with rapeseed or soybean oil for 2, 4 or 6 weeks before slaughter at 152 d of age. The supplementation of both vegetable oils in the diets for 6 weeks negatively changed backfat consistency. The pigs fed soybean oil for 4 (17.64%) and 6 weeks (18.52%) before slaughter showed an increase in backfat linoleic acid content (p = 0.002), whereas, in contrast to the other groups, rapeseed oil in the diet for 6 weeks (2.38%) increased α-linolenic acid content (p = 0.039). The content of PUFAs (p = 0.024) and n-6 PUFAs (p = 0.003) was increased by adding soybean oil to the diet for 4 and 6 weeks. The ratio of n-6/n-3 PUFAs was decreased (p = 0.040) by supplementing rapeseed oil for 4 and 6 weeks. The oil feeding duration decreased (p < 0.001) the atherogenic and thrombogenic indices. The lipid oxidative stability of backfat stored for 3 and 5 days increased (p < 0.001) in pigs fed dietary vegetable oils for 6 weeks prior to slaughter. In conclusion, the feeding of rapeseed oil for 4 weeks before slaughter is sufficient for improving the FA profile without negative effect on the consistency of the backfat.

Enhancement of Thermo-Oxidative Stability of Vegetable Oil Based Lubricant via Chemical Modification Techniques

2015 ◽  
Vol 813-814 ◽  
pp. 695-699
Author(s):  
S. Arumugam ◽  
G. Sriram ◽  
A. Hemanth Sai Kumar Chowdary ◽  
Janga Subramanya Sai
Keyword(s):  
Chemical Modification ◽  
Oxidative Stability ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Chemical Structure ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Transesterification Method ◽  
Unique Chemical

The rising demand for environmentally acceptable lubricant has led researchers to look to vegetable oils as an alternative to petroleum based lubricants. Vegetable oils have radically distinctive properties owing to their unique chemical structure which have greater ability to lubricate and have higher biodegradability. In spite of advantages, they are limited to inadequate thermo-oxidative stability and poor low-temperature properties which hinder their utilization. In the present study in order to produce a bio lubricant with good thermo-oxidative stability, rapeseed oil was subjected to two different chemical modification techniques viz., epoxidation method and successive transesterification method. The thermo-oxidative stability of formulated oil was analysed using Thermo Gravimetric Analysis (TGA). TGA analysis divulges that the thermo-oxidative stability of rapeseed oil was greatly improved with the epoxidation method in comparison with the successive transesterification method.

scholarly journals Heating of Plant Oils-Fatty Acid Reactions versus Tocopherols Degradation

2009 ◽  
Vol 27 (Special Issue 1) ◽  
pp. S185-S187 ◽  
Author(s):  
Z. Réblová ◽  
D. Tichovská ◽  
M. Doležal
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Olive Oil ◽  
Vegetable Oils ◽  
Sunflower Oil ◽  
Rapeseed Oil ◽  
Degradation Rate ◽  
Plant Oils ◽  
Oil Sunflower ◽  
High Degradation Rate

Relationship between polymerised triacylglycerols formation and tocopherols degradation was studied during heating of four commercially accessible vegetable oils (rapeseed oil, classical sunflower oil, soybean oil and olive oil) on the heating plate with temperature 180°C. The content of polymerised triacylglycerols 6% (i.e. half of maximum acceptable content) was achieved after 5.3, 4.2, 4.1, and 2.6 hours of heating for olive oil, soybean oil, rapeseed oil and sunflower oil, respectively, while decrease in content of total tocopherols to 50% of the original content was achieved after 3.4, 1.6, 1.3, and 0.5 hours of heating for soybean oil, rapeseed oil, sunflower oil and olive oil, respectively. Because of the high degradation rate of tocopherols, decrease in content of total tocopherols to 50% of the original content was achieved at content of polymerised triacylglycerols 0.6%, 1.9%, 2.8% and 4.9% for olive oil, rapeseed oil, sunflower oil and soybean oil, respectively, i.e. markedly previous to the frying oil should be replaced.

scholarly journals Formulation of Avocado Juice with Coconut Water Potentially Lowers Hypertension

2018 ◽  
Vol 2 (1) ◽  
pp. 24 ◽  
Author(s):  
Eka Sariningsih ◽  
Mia Srimiati
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Acid Content ◽  
Linoleic Acid Content ◽  
Ash Content ◽  
Coconut Water ◽  
Linolenic Acid Content ◽  
High Potassium ◽  
Total Unsaturated Fatty Acid ◽  
Serving Size

<p><em>Avocado is a fruit that high unsaturated fatty aci</em><em>d, while</em><em> coconut water is fluid </em><em>which has</em><em> high potassium. </em><em>The objective of this study was<strong> </strong>t</em><em>o assess the formulation of avocado juice with coconut water that could potentially reduce hypertension. The design of the study was an experimental with the degree of subsititution of coconut water as treatments. There were 3 kinds of treatment, i.e. F1 (75% avocado and 25% coconut water), F2 (50% avocado and 50% coconut water), F3 (25% avocado and 75% coconut water) and F0 (without coconut water but using water). Avocado juice product with 75% avocado substitution and 25% coconut water (F1) was a best formula determined by the hedonic test. This formula contained 68,48% (%w/w) water, 3,12% (%w/w) ash content, 4,45% (%w/w) fat content, 1,76% (%w/w) protein content, 21,07% (%w/w) carbohydrate content, 2163,8 (mg/kg) potassium content, 9,20% (%w/w) linoleic acid content, 1,11% (%w/w) linolenic acid content and 42,4% (%w/w) of total unsaturated fatty acid. This product could potentially reduce and prevent hypertension, because in one serving size (200cc) contain 432,76 mg of potassium (claim source of potassium). </em><em></em></p>

scholarly journals Increasing Conjugated Linoleic Acid Content in Milk and Cheese after Supplementing a Blend of Crude Soybean Oil Sediment Combined with Fish Oil to Grazing Dairy Cows

2020 ◽  
Vol 10 (03) ◽  
pp. 468-492
Author(s):  
Gerardo Antonio Gagliostro ◽  
Liliana Elisabet Antonacci ◽  
Carolina Daiana Pérez ◽  
Luciana Rossetti ◽  
Martín Tassone ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Fish Oil ◽  
Soybean Oil ◽  
Dairy Cows ◽  
Conjugated Linoleic Acid ◽  
Acid Content ◽  
Linoleic Acid Content ◽  
Crude Soybean Oil ◽  
Grazing Dairy Cows

Gas Chromatography of Unsaponifiable Matter. II. Identification of Vegetable Oils by Their Sterols

1963 ◽  
Vol 46 (3) ◽  
pp. 542-550 ◽  
Author(s):  
Jerome Eisner ◽  
David Firestone
Keyword(s):  
Gas Chromatography ◽  
Cocoa Butter ◽  
Soybean Oil ◽  
Unsaponifiable Matter ◽  
Vegetable Oils ◽  
Rice Bran ◽  
The Other ◽  
Side Chain ◽  
Florisil Column ◽  
Major Sterol

Abstract Corn, cottonseed, olive, milo maize, rice bran, safflower, peanut, soybean oil, and cocoa butter were saponified and the sterols isolated from the unsaponifiable matter on a Florisil column. Gas chromatography of an average of six samples of each oil revealed characteristic patterns which indicated that each oil could be identified when present alone. Three major sterols are present: β-sitosterol, γ-sitosterol, and stigmasterol. β-Sitosterol was the major sterol found to exist in each of the oils investigated. Two other minor sterols were detected, one of which might be α1-sitosterol, an isomer of stigmasterol, and the other a sterol with a saturated side chain.

SELECTION FOR OLEIC, LINOLEIC AND LINOLENIC ACID CONTENT IN F2 POPULATIONS OF RAPE

1976 ◽  
Vol 56 (4) ◽  
pp. 961-966 ◽  
Author(s):  
Z. P. KONDRA ◽  
T. W. WILSON
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Seed Oil ◽  
Linoleic Acid Content ◽  
Linolenic Acid Content ◽  
Brassica Napus L ◽  
Selection For ◽  
Lower Magnitude ◽  
Two Populations ◽  
Made In

Single plant selections for high, intermediate, and low oleic, linoleic and linolenic acid content of rapeseed (Brassica napus L.) oil were made in the F2 generation of three crosses. The three parent strains produced seed oil practically free of eicosenoic and erucic acids and differed in oleic, linoleic and linolenic acid content. The F3 and F4 progeny were analyzed for fatty acid composition. Selection for low and high values of oleic and linoleic acid content was reasonably successful in two out of three crosses. Selection for extremes of linolenic acid content was unsuccessful in all three crosses. Regression analyses indicated high heritabilities for oleic and linoleic acids in two of three crosses but low heritabilities for linolenic acid in all three crosses. Correlations between oleic versus linoleic and oleic versus linolenic were negative and highly significant. Correlations between linoleic versus linolenic were of lower magnitude but positive and significant in all but two populations.

scholarly journals Clone And Function Verification of The OPR Gene Related to Linoleic Acid Synthesis

2021 ◽  
Author(s):  
Min Tan ◽  
Juan Niu ◽  
Duo zi Peng ◽  
Qian Cheng ◽  
Ming Bao Luan ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Acid Content ◽  
Rapeseed Oil ◽  
Enrichment Analysis ◽  
Acid Synthesis ◽  
Linoleic Acid Content ◽  
Expression Vectors ◽  
Pathway Enrichment Analysis ◽  
Over Expression

Abstract Background: Fatty acid composition and content affect rapeseed oil quality. Fatty acid synthesis-related genes in rapeseed have been studied globally by researchers. Nevertheless, rapeseed oil is mainly composed of seven different fatty acids, and each fatty acid was regulated by different genes, furthermore different fatty acid contents affect each other, which needs continuous and in-depth research to obtain more clear results.Results: In this paper, broad-scale miRNA expression profiles were constructed and 21 differentially expressed miRNAs were detected. GO enrichment analysis showed that most up-regulated proteins were involved in transcription factor activity and catalytic activity. KEGG pathway enrichment analysis indicated that 20 pathways involving 36 target genes were enriched, of which the bna00592 pathway may be involved in fatty acid metabolism. The results were verified using a Quantitative Real-time PCR (RT-PCR) analysis, and it was found that the target gene of bna-miR156b>c>g was the OPR (12-oxo-phytodienoic acid reductase). Four copies of OPR gene were found, and the over-expression vectors (pCAMBIA1300-35s-OPR and pCAMBIA1300-RNAi-OPR) were constructed to verify their functions. In T1 and T2 plants, OPR-OE (OPR Over-Expression strain) significantly increased linoleic acid content (T1 12.56%, T2 7.185%) and OPRi (OPRi RNA-interference strain) decreased linoleic acid content (T1 5.98%, T2 0.86%).Conclusions: This is the first study to provide four copies of the OPR gene that regulates LA metabolism, can be used for the molecular mechanism of LA and optimizing fatty acid profiles in oilseed for breeding programs.

Investigation of Some Base Oil as Biodegradable Water-Cooling Two-Stroke Engine Oil

2006 ◽  
Author(s):  
Zhongping Tang ◽  
Peng Jin ◽  
Dingwei Sun ◽  
Shaoming Zhang ◽  
Weimin Liu
Keyword(s):  
Oxidative Stability ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Large Scale ◽  
Viscosity Index ◽  
Mineral Oil ◽  
Engine Oil ◽  
Water Cooling ◽  
Marine Engines ◽  
Stroke Engine

According to statistics, a large portion of used lubricants remain as potential hazards for the environment. Particularly, about 30 to 50% lubricant used in outboard marine engines is not burned completely and released into the water. As a result, consumers demand environmentally compatible lubricants due to concern about loss of mineral oil-based lubricants to the environment which can result in water contamination and pose a threat to animal and plant life. To prevent bioaccumulation of these materials in aquatic plants and animals, many agencies are considering regulations toward to biodegradable two-stroke outboard marine engines oil. Vegetable oils and ester oils are very suitable to develop “green lubricants”. Ester oils usually show excellent high temperature stability, low temperature fluidity, high viscosity index, very low volatility, good miscibility and biodegradability, but they are expensive and also produce many poisonous materials to environmental during produce process. Vegetable oils are biodegradable, nontoxic and renewable, moreover, their cost is reasonable compared to ester oils. Accordingly, vegetable oils are considered as potential candidates to replace conventional mineral oil-based lubricating oils, but the poor oxidative stability limits their utilization in large scale. Investigation of this work have found that proper percentage rapeseed oil can meet the requirements of biodegradable water-cooling two stroke engine oil, futhermore this two-cycle engine oil has good miscibility without need any miscibility-enhancing solvents. Research results indicate that two-cycle engine oil, which comprised rapeseed oil, ester oil and low viscosity hydrocracked oil as well as functional additives, exhibits good oxidative stability, easy biodegradability and good miscibility.

PERFORMANCE OF TURKEYS ON FINISHING DIETS CONTAINING DIFFERENT FATS

1965 ◽  
Vol 45 (2) ◽  
pp. 59-61 ◽  
Author(s):  
R. M. Blakely ◽  
H. I. MacGregor ◽  
Donna Hanel
Keyword(s):  
Soybean Oil ◽  
Rapeseed Oil ◽  
Metabolizable Energy ◽  
The Other ◽  
Depressant Effect ◽  
Finishing Diets ◽  
Energy Supplement ◽  
Series Of Experiments ◽  
Energy Supplements ◽  
Better Than

A series of experiments comparing rapeseed oil, soybean oil, and tallow as energy supplements in turkey finishing diets showed that rapeseed oil was as satisfactory an energy supplement as the other fat sources. There was no indication of a growth depressant effect from the rapeseed oil with birds of this age. Feed:gain ratio, carcass finish, and metabolizable energy values from the rapeseed-oil-supplemented diets were all significantly (P < 0.05) better than from the basal diets, but did not differ significantly from those supplemented with the other fat sources. There was, however, a trend towards a slightly higher metabolizable energy value for the rapeseed oil diets compared with the soybean-oil- and tallow-supplemented diets.

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