Molten fatty acid based microemulsions

2016 ◽  
Vol 18 (23) ◽  
pp. 15911-15918 ◽  
Author(s):  
Cecile Noirjean ◽  
Fabienne Testard ◽  
Christophe Dejugnat ◽  
Jacques Jestin ◽  
David Carriere
Keyword(s):  
Fatty Acid ◽  
Melting Point ◽  
Cationic Surfactant ◽  
Myristic Acid ◽  
Cetyltrimethylammonium Bromide ◽  
Ternary Mixtures ◽  
Polar Phase

We show that ternary mixtures of water (polar phase), myristic acid (MA, apolar phase) and cetyltrimethylammonium bromide (CTAB, cationic surfactant) studied above the melting point of myristic acid allow the preparation of microemulsions without adding a salt or a co-surfactant.

scholarly journals Serratia symbiotica Enhances Fatty Acid Metabolism of Pea Aphid to Promote Host Development

2021 ◽  
Vol 22 (11) ◽  
pp. 5951
Author(s):  
Xiaofei Zhou ◽  
Xiaoyu Ling ◽  
Huijuan Guo ◽  
Keyan Zhu-Salzman ◽  
Feng Ge ◽  
...  
Keyword(s):  
Body Weight ◽  
Fatty Acid ◽  
Myristic Acid ◽  
Fatty Acid Synthase ◽  
Fatty Acid Biosynthesis ◽  
Acid Biosynthesis ◽  
Pea Aphids ◽  
Serratia Symbiotica ◽  
Aphid Host ◽  
Host Development

Bacterial symbionts associated with insects are often involved in host development and ecological adaptation. Serratia symbiotica, a common facultative endosymbiont harbored in pea aphids, improves host fitness and heat tolerance, but studies concerning the nutritional metabolism and impact on the aphid host associated with carrying Serratia are limited. In the current study, we showed that Serratia-infected aphids had a shorter nymphal developmental time and higher body weight than Serratia-free aphids when fed on detached leaves. Genes connecting to fatty acid biosynthesis and elongation were up-regulated in Serratia-infected aphids. Specifically, elevated expression of fatty acid synthase 1 (FASN1) and diacylglycerol-o-acyltransferase 2 (DGAT2) could result in accumulation of myristic acid, palmitic acid, linoleic acid, and arachidic acid in fat bodies. Impairing fatty acid synthesis in Serratia-infected pea aphids either by a pharmacological inhibitor or through silencing FASN1 and DGAT2 expression prolonged the nymphal growth period and decreased the aphid body weight. Conversely, supplementation of myristic acid (C14:0) to these aphids restored their normal development and weight gain. Our results indicated that Serratia promoted development and growth of its aphid host through enhancing fatty acid biosynthesis. Our discovery has shed more light on nutritional effects underlying the symbiosis between aphids and facultative endosymbionts.

scholarly journals The effect of linseed oil supplementation of the diet on the content of fatty acids in the egg yolk

2012 ◽  
Vol 81 (2) ◽  
pp. 159-162 ◽  
Author(s):  
Petra Hudečková ◽  
Lucie Rusníková ◽  
Eva Straková ◽  
Pavel Suchý ◽  
Petr Marada ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Fatty Acid Profile ◽  
Myristic Acid ◽  
Linseed Oil ◽  
Control Group ◽  
Heptadecanoic Acid ◽  
Egg Yolks ◽  
Experimental Group

The aim of this study was to compare the effect of two different types of oils in diet on the fatty acid profile in the eggs of layers and to include a particular type of oil as a supplement of feeding mixtures for layers in order to support the development of functional foodstuffs. Thirty layers fed a diet containing soybean oil constituted the control group (soybean oil is the most frequently used oil added to feeding mixtures). In the experimental group (thirty layers), soybean oil was replaced with linseed oil at the same amount (3 kg of oil per 100 kg of feeding mixture). Feeding was provided ad libitum for all days of the month. After one month, egg yolks were analysed and the fatty acid profile was compared. Significant differences (P ≤ 0.05) were found in the concentration of myristic acid that belongs to the group of saturated fatty acids. Eggs in the experimental group showed higher concentrations of myristic acid compared to the control group (0.20 g/100 g of fat and 0.18 g/100 g of fat, respectively). Highly significant differences (P ≤ 0.01) were found for heptadecanoic acid but the trend was opposite to that of myristic acid; concentrations of heptadecanoic acid in the experimental group were lower than those in the control group. Highly significant differences (P ≤ 0.01) were found for n-9 monounsaturated fatty acids where egg yolks in eggs from layers fed linseed oil contained higher concentrations of oleic acid, myristoleic acid, and palmitoleic acid. Lower concentrations of n-6 fatty acids (P ≤ 0.01) were found after the addition of linseed oil in eggs. Linseed oil showed a positive effect on n-3 fatty acids (α-linolenic acid), its concentration in the control and experimental group was 0.82 g/100 g of fat and 5.63 g/100 g of fat, respectively. The possibility of influencing the fatty acid profile in eggs is very important for the development of functional foods.

scholarly journals Effect of Supplementing Myristic Acid in Dairy Cow Rations on Ruminal Methanogenesis and Fatty Acid Profile in Milk

2007 ◽  
Vol 90 (4) ◽  
pp. 1851-1858 ◽  
Author(s):  
N.E. Odongo ◽  
M.M. Or-Rashid ◽  
E. Kebreab ◽  
J. France ◽  
B.W. McBride
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Dairy Cow ◽  
Myristic Acid

scholarly journals MODELLING THE MELTING TEMPERATURE OF A LIPID‐BASED CRITICAL TEMPERATURE INDICATOR: A COMPARISION BETWEEN SIMPLEX-LATTICE AND SIMPLEX-CENTROID DESIGNS

2018 ◽  
Vol 35 (2) ◽  
Author(s):  
KARINE CRISTINE KAUFMANN ◽  
ODINEI HESS GONÇALVES ◽  
EVANDRO BONA ◽  
FERNANDA VITÓRIA LEIMANN
Keyword(s):  
Critical Temperature ◽  
Melting Point ◽  
Melting Temperature ◽  
Predictive Ability ◽  
Ternary Mixtures ◽  
Lipid Mixture ◽  
Color Changes ◽  
Lattice Design ◽  
Simplex Lattice ◽  
Improved Model

Critical temperature indicators (CTI) find applications in food industry in cases when defrost may not occur or a specific temperature may not be reached, , indicating changes through visual changes, such as melting, color changes, etc. Lipid mixtures are promising candidates to formulate CTI since the final melting point of the mixture may be manipulated by the proportion of each lipid. In this work a lipid mixture consisting of stearic acid, lard and peanut oil was used to develop a CTI mixture. Simplex-lattice and Simplex-centroid experimental designs were compared to modelling the melting temperature of the lipid mixture. Addition of axial points to the experimental design improved predictive ability of the models while the inclusion of inverse terms was necessary to improve models accuracy. Simplex-lattice design presented an improved ability to predict the melting point of binary mixtures, while the simplex-centroid design resulted in an improved model for predicting melting point of the ternary mixtures

scholarly journals Physico-chemical Analysis of beeswax procured from Mumbai market, Western Ghats (Natural Habitat)

2020 ◽  
Vol 5 (05) ◽  
pp. 186-190
Author(s):  
Shrutika Suresh Naik ◽  
Sheela Pargunde
Keyword(s):  
Fatty Acid ◽  
Melting Point ◽  
Chemical Analysis ◽  
Western Ghats ◽  
Natural Habitat ◽  
Volatile Matter ◽  
Fatty Acid Esters ◽  
Plant Oil ◽  
Physico Chemical ◽  
Market Sample

Beeswax is the substance that is obtained from the structure of a honey comb. The bees secrete wax to build the honey combs to store honey. It has rich hydrophobic property, the beeswax is in fact present within cosmetics and body products. Also, beeswax is used in food industry. Beeswax is a complex mixture of hydrocarbons, free fatty acid, esters of fatty acid. Beeswax plays an important role in Ayurvedic medicine, the traditional medicine name with Madhushistha (Beewax). The Madhushistha is used for the care of wound from abrasion or even from burns with topical application. Some references in Ayurvedic granth highlight the use of Madhushistha in combination with other herbal and mineral mixture, like Sikta Taila, Mruddaharshringa, Jatyadi Taila, etc. Beeswax is mainly of two types, natural beeswax and processed beeswax. Natural beeswax is clarified further heating in water with petroleum waxes. Because of high demand and shortage in market, adulteration of beeswax with cheaper materials are common like animal fat, plant oil and petroleum spirits (Paraffin wax). Hence authenticity of beeswax is major concern and that can be determined by using physico-chemical parameters such as- organoleptic test, solubility, Melting point, Spacific gravity, Refractive index, Acid value, Ester value, Saponification value, volatile matter. With this justification the present study is expected to determine the quality status of four different beeswax samples procured from Mumbai market, western ghats (Natural habitat). The physico-chemical analysis revealed that volatile matter is detected in market sample (2) whereas market sample (1) shows higher melting point as compare to beeswax collected from the Natural habitat. Market sample (1,2) of beeswax shows slight adulteration hence natural habitat samples (1,2) of beeswax should be used in medicine preparation.

scholarly journals Physiochemical analysis of oil extracted from Vitelleria paradoxa seed obtained from Wukari North Eastern Nigeria

2021 ◽  
Vol 4 (1) ◽  
pp. 059-066
Author(s):  
Azuaga TI ◽  
Azuaga IC ◽  
Okpaegbe UC ◽  
Ibrahim AI ◽  
Manasseh CK
Keyword(s):  
Fatty Acid ◽  
Melting Point ◽  
Free Fatty Acid ◽  
Specific Gravity ◽  
Moisture Content ◽  
Iodine Value ◽  
Oil Recovery ◽  
Acid Value ◽  
Ash Content ◽  
Saponification Value

Soxhlet extraction of oil from seeds of Vitelleria paradoxa was carried out using n-hexane as the solvent. Standards methods were adopted in the analysis of the physiochemical properties; moisture content, melting point, total ash content, pH, specific gravity, iodine value, saponification value, acid value, free fatty acid value and ester value were all evaluated. The oil recovery rate was good with 32.6% yield, moisture content of 3.1%, melting point of 52oC and pH 5.7. Total ash content was 50.3%, specific gravity of 0.9 g/cm3, iodine value 39 mg/L, saponification value 224.6 mgKOH/g, acid value 59.9 mgKOH/g free fatty acid (FFA) 29.9 mgKOH/L and ester value 164.7 mg/L. The results shows that oil from Vitelleria paradoxa seed holds the potentials for wider applications in foods, cosmetics, pharmaceuticals, lubricants and soap making.

scholarly journals KOMPOSISI ASAM LEMAK CACING LAUT SIASIA (SIPUNCULUS, SP) DARI PERAIRAN PANTAI PULAU NUSALAUT

2017 ◽  
Vol 4 (1) ◽  
pp. 10-16
Author(s):  
Bernita Silaban
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Stearic Acid ◽  
Eicosapentaenoic Acid ◽  
Lauric Acid ◽  
Coastal Waters ◽  
Myristic Acid ◽  
Palmitoleic Acid ◽  
Fat Content ◽  
Coastal Communities

Background: "Siasia" is a seaworm species in the phylum that includes Sipuncula Sipunculidea class. This animal has been consumed for generations by coastal communities Nusalaut Island, central mollucas but not yet universally known. Until now there has been obtained gisi complete composition. This study aimed to identify the composition of fatty acids contained in vain fresh seaworms. Methods: Seaworms vain taken from coastal waters of Negeri Titawaai and Nalahia Nusalaut Island, Central Moluccas in March 2014. The parameters analyzed include methods is sokhlet fat content and fatty acid by GC method. Results: The results showed fresh siasia fat content 1.12% of coastal waters Titawaai while 1.91% of coastal waters Nalahia. Fatty acids seaworms were identified from coastal waters Titawai  is  kaparat acid (C10: 0), lauric acid (C12: 0), myristic acid (C14: 0), palmitoleic acid (C16: 1), stearic acid (C18: 0), linolenic acid (C18: 3) acid and eicosapentaenoic (C20: 5) while the fatty acids of  seaworm vain of coastal waters Nalahia include is lauric acid (C12: 0), myristic acid (C14: 0), palmitoleic acid ( C16: 1), stearic acid (C18: 0) and eicosapentaenoic acid (C20: 3). Conclusion: The fat content of fresh siasia sea worms is 1.12% from the waters of Titawaai beach, while 1.91% of the waters of the coast of Nalahia.

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