Linoleic acid‐rich guava seed oil: Safety and bioactivity

2019 ◽  
Vol 33 (10) ◽  
pp. 2749-2764 ◽  
Author(s):  
Adchara Prommaban ◽  
Niramon Utama‐ang ◽  
Anan Chaikitwattana ◽  
Chairat Uthaipibull ◽  
Somdet Srichairatanakool
Keyword(s):  
Linoleic Acid ◽  
Seed Oil ◽  
Guava Seed

Large-scale preparation of linoleic acid-d2 -enriched triglycerides fromCrepis alpina seed oil

1993 ◽  
Vol 70 (8) ◽  
pp. 817-819 ◽  
Author(s):  
Richard O. Adlof ◽  
Edward A. Emken
Keyword(s):  
Linoleic Acid ◽  
Large Scale ◽  
Seed Oil ◽  
Large Scale Preparation ◽  
Scale Preparation

Investigation on the Extraction and Conjugate of Linoleic Acid of Purple Medic Seed

2011 ◽  
Vol 347-353 ◽  
pp. 3337-3340
Author(s):  
Shu Ting Qi ◽  
Yu Xin Shi ◽  
Ming Dong ◽  
Hong Qing Wu ◽  
Di Mu
Keyword(s):  
Fatty Acid Composition ◽  
Linoleic Acid ◽  
Solvent Extraction ◽  
Seed Oil ◽  
Extraction Efficiency ◽  
Oil Quality ◽  
Total Lipids ◽  
Solvent Type ◽  
Effects Of Temperature

Methods currently used for the quantitative determination of total lipids and fatty acid composition in plant require solvent extraction. This study examined the solvent extraction of purple medic seed oil. Results varied with different extraction conditions. The effects of temperature, extraction time, sample size and solvent type on the extraction efficiency and oil quality were studied. The amount of extract collected was highest when ether absolute was used as a solvent for solvent extraction.

Sequence variations and expression analysis of FAD2 gene among safflower materials with different linoleic acid content in seed oil

2019 ◽  
Vol 41 (8) ◽  
Author(s):  
Dandan Li ◽  
Jingsheng Yu ◽  
Qing Wang ◽  
Bo Hu ◽  
Chen Chen ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Expression Analysis ◽  
Acid Content ◽  
Seed Oil ◽  
Linoleic Acid Content ◽  
Sequence Variations ◽  
Fad2 Gene

scholarly journals Aloe ferox Seed: A Potential Source of Oil for Cosmetic and Pharmaceutical Use

2013 ◽  
Vol 8 (3) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Rachael Dangarembizi ◽  
Eliton Chivandi ◽  
Kennedy Erlwanger
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Seed Oil ◽  
Soxhlet Extraction ◽  
Acid Value ◽  
Potential Source ◽  
Saponification Value ◽  
Aloe Ferox ◽  
Pharmaceutical Industries ◽  
Important Medicinal Plant

Aloe ferox is an important medicinal plant in Southern Africa whose seeds could be useful as a source of oil. The fatty acid composition of A. ferox seed oil was determined using gas chromatography. The physicochemical properties of the oil were analysed using standard methods. The seeds yielded 19.4% of a light textured oil using the Blight and Dyer's method and 12.3% using the Soxhlet extraction method. The saponification value of the seed oil was 241.9 mg KOH/g and the peroxide value was 8.9 meq/kg. The acid value of the seed oil was 51.5 mg KOH/g (25.9% free fatty acids). The major fatty acids found in the seed oil were linoleic acid (71.8%), oleic acid (12.0%), palmitic acid (11.2%) and stearic acid (2.9%). The results obtained suggest that as A. ferox seed oil is high in linoleic acid, it could be potentially exploited in the cosmetic and pharmaceutical industries.

LINOLEIC ACID AND ITS ISOMERS

1938 ◽  
Vol 16b (5) ◽  
pp. 158-175 ◽  
Author(s):  
J. W. McCutcheon
Keyword(s):  
Linoleic Acid ◽  
Melting Point ◽  
Sunflower Seed ◽  
Seed Oil ◽  
Additional Data ◽  
Free Acid ◽  
Optically Active ◽  
Naturally Occurring ◽  
Tetrabromostearic Acid ◽  
Asymmetric Carbon

Linoleic acid has been prepared from sunflower seed oil by a modification of Rollett's method. The melting point of the solid tetrabromostearic acid is placed at 115.2 °C. The boiling point, specific gravity, iodine value, and refractive index of the ethyl ester and the melting point of the free acid were determined. Linoleamide was prepared, and its melting point is placed at approximately 58 °C. Through rebromination of the prepared linoleic acid, the isomeric liquid tetrabromostearic acid was isolated, and is described. Its reduced acid is shown to be identical with that derived from the solid isomer. From these data and additional data from the literature, it was concluded that bromination and debromination cause no cis-trans isomerization, and that the two pairs of optically active enantiomorphous bromo derivatives exist, not because of their derivation from different acids, but rather because of the four asymmetric carbon atoms which they contain. Therefore, only one naturally occurring linoleic acid is at present known which is identical with that produced through reduction of the tetrabromide that melts at 115.2 °C. or the corresponding liquid derivative. No attempt is made to assign any particular cis-trans configuration to this acid, or to exclude the theoretical existence of three others.

Evaluation of wild sunflower (Helianthus) species for high content and stability of linoleic acid in the seed oil

1991 ◽  
Vol 116 (3) ◽  
pp. 359-367 ◽  
Author(s):  
A. De Haro ◽  
J. Fernandez-Martinez
Keyword(s):  
Linoleic Acid ◽  
Acid Content ◽  
Seed Oil ◽  
Oil Quality ◽  
Linoleic Acid Content ◽  
Seed Formation ◽  
Warm Environment ◽  
Mean Temperature ◽  
Breeding Programmes ◽  
Helianthus Species

SUMMARYA collection of 168 accessions belonging to 62 species and subspecies was evaluated in Cordoba, Spain, in 1985 for fatty acid composition of the seed oil. Linoleic acid content of seed produced in Cordoba (mean temperature during seed formation 27·9 °C) was compared with that of seed obtained under much cooler environmental conditions in Montpellier, France, (mean temperature 19·5 °C). Linoleic acid content ranged from 27·3 to 83·7% in the warm environment and from 45·9 to 88·7% in the cool environment with average values of 64·3% and 75·0%, respectively. Twenty-three species with linoleic acid values of > 70% in both environments were evaluated again, in 1989 in Cordoba (mean temperature 31 °C). Twelve wild species showed consistently high and more stable linoleic acid contents than the cultivated control and could be readily used in breeding programmes to improve oil quality.

Study on Antioxidant Activities of Pinus armandi franch Seed Oil

2013 ◽  
Vol 634-638 ◽  
pp. 1294-1301
Author(s):  
Jian Xia Guo ◽  
Chang Lu Wang ◽  
Zhi Jian Wu
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Seed Oil ◽  
Antioxidant Activities ◽  
Essential Fatty Acids ◽  
Lipid Peroxide ◽  
Normal Diet ◽  
Sod Activity ◽  
Total Fatty Acids ◽  
Pharmaceutical Properties

Pinus armandi franch is a unique specialty plant in China and its seed oil contains high levels of essential fatty acids (EFA), particularly linoleic acid (LA), which has several pharmaceutical properties. Pinus armandi franch seed oil is a nice resource of linoleic acid with a content of 63% of the total fatty acids. Linoleic acid is an essential fatty acid, whose absence in a normal diet is responsible for the development of various abnormal disorders. This work reported purified LA from Pinus armandi franch seed oil could lower MDA content of lipid peroxidation on rats with hyperlipidemia significantly. TAC activity of liver, heart and serum was enhanced significantly, as well as SOD activity was increased. It demonstrated purified LA from Pinus armandi franch seed oil could improve antioxidant levels of hyperlipidemia rats effectively, enhance the activity of antioxidant enzyme and reduce the content of lipid peroxide, thereby improving lipid metabolism.

scholarly journals The vitamin E nutritional status of rats fed on diets high in fish oil, linseed oil or sunflower seed oil

1994 ◽  
Vol 72 (1) ◽  
pp. 127-145 ◽  
Author(s):  
Sandra R. Farwer ◽  
Bernardus C. J. Der Boer ◽  
Edward Haddeman ◽  
Gerardus A. A. Kivits ◽  
Antoon Wiersma ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Vitamin E ◽  
Fish Oil ◽  
Sunflower Seed ◽  
Seed Oil ◽  
Linseed Oil ◽  
Tocopheryl Acetate ◽  
Control Groups ◽  
Sunflower Seed Oil

Twelve groups of eight rats and two control groups of sixteen rats were given semisynthetic diets with 40% energy as fat for a period of 76 d. All diets contained a minimum of 3% energy as linoleic acid and comparable basal levels of D-α- and D-γ-tocopherol. The diets varied in fat composition and in the content of DL-α-tocopheryl acetate. The diets high in polyunsaturated fatty acids (PUFA) were either rich in fish oil (FO; groups 1–4; 10% energy as fish oil PUFA), linseed oil (LN; groups 1–4; 10% energy as α-linolenic acid) or sunflower seed oil (SF; groups 1–4; 10 + 3% energy as linoleic acid). The control groups were given a diet high in monounsaturated fatty acids (MUFA; CO 1; 10 + 13% energy as oleic acid) or a diet with an ‘average’ linoleic acid content (CO 2; 8.5% energy as linoleic acid). Of each high PUFA diet three groups were supplemented with graded levels of DL-α-tocopheryl acetate. Steatitis, a sensitive histopathological indicator of vitamin E deficiency in animals fed on diets rich in fatty acids with three or more double bonds, was observed only in the adipose tissue of the FO groups, even in the group with the highest DL-α-tocopheryl acetate supplementation. Liver and serum α- tocopherol levels were found to be positively correlated and liver and serum γ-tocopherol levels negatively correlated with dietary DL-α-tocopheryl acetate. The groups on the FO diets had significantly reduced liver and serum tocopherol levels in comparison with the groups on the other high-PUFA diets. With the supplementation scheme used for the FO groups the liver α-tocopherol levels of both control groups were reached but the serum control levels were not.

Conjugated Linoleic Acid Production by Fermentation

2006 ◽  
Vol 2 (4) ◽  
Author(s):  
Ming Dong ◽  
Shuting Qi
Keyword(s):  
Linoleic Acid ◽  
Incubation Time ◽  
Lactobacillus Acidophilus ◽  
Seed Oil ◽  
Incubation Temperature ◽  
Conversion Ratio ◽  
Isomerase Activity ◽  
Whole Milk ◽  
Alfalfa Seed ◽  
Linoleic Acid Isomerase

Lactobacillus acidophilus 1.1854 was used for CLA production in whole milk and alfalfa seed oil was used as substrate. Alfalfa seed oil contained linoleic acid about 40%. Results showed that alfalfa seed oil addition to the culture improved CLA production, indicating the presence of linoleic acid isomerase activity in the culture. The concentration of lactic acid bacteria, the incubation time, the substrate concentration, the pH, incubation temperature, the pre-incubation time and the substrate amount of pre-incubation were studied in our research and they are optimized at 2.5%(v/v), 21h, 0.05%(v/v), pH 6.4, 37°C, 11h and 10µL which brought the optimal conversion ratio at about 50%.

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