Fungistatic action of natural oils and fatty acids on dermatophytic and saprophytic fungi

1992 ◽  
Vol 147 (3-4) ◽  
pp. 214-220 ◽  
Author(s):  
M.A. El-Naghy ◽  
S.N. Maghazy ◽  
E.M. Fadl-Allah ◽  
Z.K. El-Gendy
Keyword(s):  
Fatty Acids ◽  
Saprophytic Fungi ◽  
Natural Oils ◽  
Fungistatic Action

scholarly journals Influence of diets containing different natural oils on the incorporation of [1-14C]acetate in the various lipid fractions of rat liver

1966 ◽  
Vol 20 (3) ◽  
pp. 553-559 ◽  
Author(s):  
E. P. M. Bhattathiry
Keyword(s):  
Fatty Acids ◽  
Olive Oil ◽  
Palm Oil ◽  
Neutral Lipids ◽  
Total Lipids ◽  
Stock Diet ◽  
Natural Oils ◽  
Lipid Fractions ◽  
Normal Stock

1. A comparative study was undertaken with rats on the effect of various diets (normal stock, fat-free, palm oil and olive oil) on the in vitro incorporation of [14C]acetate by the liver into cholesterol and into the fatty acids of phospholipids and neutral fats. 2. The total lipids extracted from the incubation mixtures were fractionated into acetone-precipitable and digi- tonin-precipitable portions and also into the fatty acids of neutral lipids. 3. The incorporation of [14C]acetate into the acetone-precipitable fraction and into fatty acids of neutral fats was greatest in livers of rats given the fat-free diet, followed by those of the groups given olive oil, the normal stock diet, and palm oil. Livers from the group given the fat-free diet also exhibited the highest percentage of 14C activity in the digitonin-precipitable fraction and were closely followed by the group on the normal stock diet. Compared with those of the other two groups, the livers of the groups given olive oil and palm oil showed much less activity in the digitonin- precipitable fraction. 4. The greater the amount of a specific type of fatty acid in the diet, the less was the 14C activity incorporated into that type of fattyacid in the ncutral fats of liver slices, hut this was not so with the fatty acids obtained froin the acetone-precipitahlc fraction of the lipids.

scholarly journals Production of Omegas-6 and 9 from the Hydrolysis of Açaí and Buriti Oils by Lipase Immobilized on a Hydrophobic Support

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 3015 ◽  
Author(s):  
Malena Pérez ◽  
Enrico Gonçalves ◽  
Jose Salgado ◽  
Mariana Rocha ◽  
Paula Almeida ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Carbon Source ◽  
Aqueous System ◽  
Euterpe Oleracea ◽  
Natural Oils ◽  
Immobilized Lipases ◽  
Rp Hplc ◽  
Mauritia Flexuosa ◽  
The Given ◽  
Hydrolysis Of

This paper describes a bioprocess to obtain omegas-6 and 9 from the hydrolysis of Açaí (Euterpe oleracea Martius) and Buriti (Mauritia flexuosa) oils by lipases immobilized on octyl-sepharose. For this, oils and butters were initially selected as the carbon source which resulted in higher production of lipases in Beauveria bassiana and Fusarium oxysporum cultures. The carbon source that provided secretion of lipase by B. bassiana was Açaí oil, and for F. oxysporum, Bacuri butter. Lipases obtained under these conditions were immobilized on octyl-sepharose, and both, the derivatives and the crude extracts were biochemically characterized. It was observed that the immobilization promoted an increase of stability in B. bassiana and F. oxysporum lipase activities at the given temperatures and pH. In addition, the immobilization promoted hyperactivation of B. bassiana and F. oxysporum lipase activities being 23.5 and 11.0 higher than free enzyme, respectively. The hydrolysis of Açaí and Buriti oils by the derivatives was done in a biphasic (organic/aqueous) system, and the products were quantified in RP-HPLC. The results showed the potential of these immobilized lipases to obtain omegas-6 and 9 from Brazilian natural oils. This work may improve the enzymatic methodologies for obtaining foods and drugs enriched with fatty acids.

STUDY OF PHYSICAL AND CHEMICAL COMPOSITION AND SENSORY PROPERTIES OF MIX OILS DERIVED FROM FLAX SEEDS AND THISTLE SPOTTY AS INGREDIENT OF COSMETICS

2019 ◽  
Author(s):  
Т.В. ПЕЛИПЕНКО ◽  
С.К. МУСТАФАЕВ ◽  
М.Р. БРУЯКА
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Acid Composition ◽  
Linseed Oil ◽  
Sensory Properties ◽  
Biologically Active ◽  
Natural Oils ◽  
Flax Seeds

Разработана композиция из натуральных масел из семян льна и расторопши пятнистой. Жирнокислотный состав смеси масел обеспечивает нормальное функционирование и регенерацию кожи и достаточно стабилен к окислению. Масла из семян льна высоколиноленового типа и расторопши пятнистой получены методом холодного отжима на лабораторном прессе FarmetDUO PF3. Выполнены расчеты, определяющие концентрацию исходных масел в смеси с заданным составом жирных кислот, и составлены образцы смеси масел: образец 1 при соотношении 6 : 3 жирных кислот 1 : 1 содержал 33 масла расторопши пятнистой и 67 льняного масла образец 2 при соотношении 6 : 3 жирных кислот 4 : 1 соответственно содержал 27 льняного и 73 масла расторопши. Установлено, что фактическое соотношение жирных кислот 6 : 3 в образце 1 соответственно составило 0,97 : 1, в образце 2 3,8 : 1, что близко к оптимальному. Доля олеиновой кислоты (9) в смеси масел, повышающей их устойчивость к окислению, составила 25 от общего количества жирных кислот. Образцы смеси масел характеризуются средней растекаемостью, невысоким поверхностным натяжением и низкой вязкостью. Введение смеси масел из семян льна и расторопши пятнистой с заданным жирнокислотным составом в рецептуры косметических средств позволит получить биологически активные продукты кремы для сухой кожи, а также питательные кремы с высокими сенсорными свойствами. The composition of natural oils of flax seeds and thistle spotty is developed. The fatty acid composition of the oil mix ensures the normal functioning and regeneration of the skin and is sufficiently stable to oxidation. Samples of the oil from the seeds of the flax with high oleic acid and thistle spotty oil is obtained by cold pressing in a laboratory press FarmetDUO PF3. Calculations determining the concentration of the starting oils in a mixture with given of composition of fatty acids were carried. Samples of the mix of oils composed of: sample 1 when the ratio of 6 : 3 fatty acids of 1 : 1 respectively consists of 33 oil thistle spotty and 67 linseed oil sample 2 when the ratio 6 : 3 fatty acids is 4 : 1 respectively consists of 27 linen 73 oil thistle spotty. It was found that the actual ratio of fatty acids 6: 3 in sample 1 was 0,97 : 1 respectively, in sample 2 3,8 : 1, which is close to optimal. The share of oleic acid (9) in the mix of oils, which increases their resistance to oxidation, was 25 of the total amount of fatty acids. Oil mixture samples are characterized by medium spreadability, low surface tension and low viscosity. The introduction of a mix of flax seed oil and thistle spotty oil with a given fatty acid composition in the formulation of cosmetics will allow to obtain biologically active products creams for dry skin, as well as nourishing creams with high sensory properties.

Highly selective and low-temperature hydrothermal conversion of natural oils to fatty alcohols

2019 ◽  
Vol 21 (11) ◽  
pp. 3059-3064 ◽  
Author(s):  
Arif Ali ◽  
Bolong Li ◽  
Yijian Lu ◽  
Chen Zhao
Keyword(s):  
Fatty Acids ◽  
Low Temperature ◽  
Low Temperatures ◽  
Fatty Alcohols ◽  
Green Process ◽  
Fatty Esters ◽  
Hydrothermal Conversion ◽  
Natural Oils

In this contribution, we report a facile and green process for the quantitative transformation of natural oils, fatty esters, and fatty acids to fatty alcohols over N-modified carbon (N–C) supported RuSn catalysts in water at low temperatures (140–180 °C).

Evaluation of physicochemical and tribological properties of chaulmoogra (Hydnocarpus wightianus) oil as green lubricant base stock

2020 ◽  
pp. 135065011989952 ◽  
Author(s):  
S Salaji ◽  
NH Jayadas
Keyword(s):  
Fatty Acids ◽  
Vegetable Oils ◽  
Tribological Properties ◽  
Pour Point ◽  
Edible Oil ◽  
Base Stock ◽  
Resonance Spectroscopy ◽  
Natural Oils ◽  
Lubricant Base Stock ◽  
Cyclic Fatty Acids

Due to environmental concerns, natural oils are increasingly being used as an alternative to mineral oil-based products such as lubricants. However, the use of edible oil for industrial application adversely affects their availability for edible purposes. Chaulmoogra oil is a non-edible oil obtained from the seeds of chaulmoogra tree that grows in wastelands. The fatty acid constituents of vegetable oils determine their properties. Presence of long-chain cyclic fatty acids like chaulmoogric acid, hydnocarpic acid and gorlic acid distinguishes chaulmoogra oil from other oils. Research on how cyclic fatty acids influence the properties of vegetable oils and affect their efficacy as base oils for lubricants is scarce in the literature. This paper presents a preliminary evaluation of the physicochemical, viscometric, oxidative and tribological properties of chaulmoogra oil as a lubricant base stock. Gas chromatography–mass spectroscopy, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy methods were used for structure elucidation. The viscometric analysis was conducted by using Brookfield viscometer. The tribological performance was evaluated by a four-ball apparatus as per ASTM D4172-94. Thermal and oxidative stabilities were evaluated by thermogravimetric/differential thermal analysis in nitrogen and oxygen environments. Pour point was assessed by ASTM D97 method and differential scanning calorimetry. Chaulmoogra oil has a viscosity of 9.2 cSt at 100 ℃ and a viscosity index of 166. Though the coefficient of friction was better than a commercial lubricant of similar viscosity range (SAE 20W40), the wear scar diameter was comparatively higher. Addition of antiwear additive zinc dialkyl dithiophosphate showed considerable improvement in the wear performance of chaulmoogra oil. Chaulmoogra oil showed a high pour point value around 15 ℃ which needs to be improved by appropriate pour point depressants. Environmental advantage, coupled with non-edible nature of chaulmoogra oil, makes it an excellent base stock for lubricants.

scholarly journals Epoxy Fatty Acids in Natural Oils. 1

1962 ◽  
Vol 35 (7) ◽  
pp. 298-307
Author(s):  
Marorni TAKEDA ◽  
Yoshiyuki TOYAMA
Keyword(s):  
Fatty Acids ◽  
Natural Oils ◽  
Epoxy Fatty Acids

scholarly journals Epoxy Fatty Acids in Natural Oils. (3)

1962 ◽  
Vol 35 (9) ◽  
pp. 388-396
Author(s):  
Maromi TAKEDA ◽  
Yoshiyuki TOYAMA
Keyword(s):  
Fatty Acids ◽  
Natural Oils ◽  
Epoxy Fatty Acids
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