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Published in Natan B. Vargaftik, Lev P. Filippov, Amin A. Tarzimanov, Evgenii E. Totskii, Yu. A. Gorshkov, Handbook of Thermal Conductivity of Liquids and Gases, 2020
Natan B. Vargaftik, Lev P. Filippov, Amin A. Tarzimanov, Evgenii E. Totskii, Yu. A. Gorshkov
Lauric acid C12H24O2] The thermal conductivity of the saturated lauric acid [192] is as follows: T,K ………………….320330λ·103,W/(mK)…162159
2O, and Global Warming: How to Stop the Planet from Burning
Published in Abu Zahrim Yaser, Poonam Khullar, A. K. Haghi, Green Materials and Environmental Chemistry, 2021
Francisco Torrens, Gloria Castellano
Because lauric acid is relatively cheap, it presents a long shelf-life, is non-toxic and safe to handle, it is usually used for the production of soaps and cosmetics. The lauric acid is extracted, then neutralized with NaOH to give Na+ laurate, which is a soap, which can be further processed to give sodium lauryl sulfate (SLS, cf. Figure 3.4), a detergent. The SLS [sodium dodecyl sulfate (SDS)] is the main component of most soap-based products, and if one were to look in his bathroom, he is guaranteed to find at least one product containing it (e.g., shampoo, toothpaste). In industry, it is found in products (e.g., engine degreasers, carpet cleaners). The SLS is inexpensive and an excellent foaming agent. It presents a high pH as it is an alkali substance and shows the appearance of a white powder. The SLS is a by-product of palm oil, which is extracted from palm trees, which are mainly grown in Indonesia and Malaysia, and accounts for a large percentage of income for much of the local population. However, in order to make way for palm oil plantations, mass deforestation occurred in the countries. Deforestation on such a large scale presents severe implications for the climate of the whole planet. When cutting down ancient rainforests, great quantities of C are released into the atmosphere from peat bogs, adding hugely to GW. The loss of trees that carry out photosynthesis (the process of converting CO2 to O2) greatly adds to GW problem, since the palm oil trees that replace them are not as large, as densely packed, or as efficient at photosynthesis as those in the rainforest. Many environmental groups claimed that the deforestation being carried out in order to make room for plantations is actually more harmful to the Earth’s climate than the benefits that could be gained via palm oil as a biofuel.
Enhancement of aqueous solubility and extraction of lauric acid using hydrotropes and its interaction studies by COSMO-RS model
Published in Journal of Dispersion Science and Technology, 2021
S. Balachandran, D. Gnana Prakash, R. Anantharaj, M. R. Danish John Paul
Lauric acid is one of the most important medium chain saturated fatty acid present in the coconut kernel which imparts shelf life to the coconut oil extracted from it. There are different sources available for lauric acid among which coconut oil is the main source and it consists of around 50% of all fatty acids.[1] Lauric acid present in coconut oil has the potential to ruin the lipid membrane of bacteria thereby acting as an antibacterial agent in food preservation.[2] It was also reported that the chain length of lauric acid plays a crucial role in inhibiting the growth and proliferation of virus.[3] Apart from its antimicrobial property lauric acid has a potential role in regulating cholesterol and lipoprotein levels in human system.[4] To make use of the effective application of lauric acid it is important to have better extraction and purification methods for the complete utilization of its benefits.
Tribological characteristic evaluation of coconut oil dispersed with surfactant modified ceria-zirconia hybrid nanoparticles
Published in Tribology - Materials, Surfaces & Interfaces, 2019
Jibin T. Philip, Chacko Preno Koshy, M. D. Mathew, Basil Kuriachen
Coconut oil finds its place in the list of lubricants derived from vegetable oils such as palm oil, olive oil, rapeseed oil etc. Its main constituents include a number of saturated acids and the major one being the lauric acid (C12:0). The fatty acid profile is the significant factor which decides the capability of vegetable oils to be used as the base oil for lubricants. The amount of unsaturation in the coconut oil is comparatively less compared to many other vegetable oils. The pour point of coconut oil is very high (iodine value of 7-12) which can be brought down using suitable pour point depressants or chemical modifications. The coconut oil is tested and proved to be a better boundary lubricant with good anti-friction properties and its anti-wear properties can be improved using suitable anti-wear/extreme pressure (AW/EP) additives [37,38]. Koshy et al. [39] studied the tribological behaviour of coconut oil added with MoS2 particles at elevated temperatures found that the addition of the derived MoS2 nanolubricant significantly reduced the friction and wear considerably. The formation of tribo-films, exfoliation of nanoparticles and filling of asperities with nanoparticles were concluded as the reasons for this particular phenomenon. Thottackkad et al. [40] and Koshy et al. [41,42] investigated the effect of CuO nanoparticle additives in coconut oil and observed that the lubricant properties of the coconut oil were enhanced by the addition of CuO nanoparticles at an optimum concentration of 0.34 wt.%. Further, the surface roughness value was considerably reduced by the utilization of these nanolubricants. Table 1 shows the list of researches previously carried out on coconut oil added with nanoparticle additives for lubricant applications.
Fatty acids and survival of bacteria in Hammam Pharaon springs, Egypt
Published in Egyptian Journal of Basic and Applied Sciences, 2018
Yehia A. Osman, Mahmud Mokhtar Gbr, Ahmed Abdelrazak, Amr M. Mowafy
The similarity in the fatty acid profile of the three local isolates was striking and convinced us to believe that the prevalent environmental condition with the Hammam had driven this similarity. It is noticeable that the dodecanoic acid (12:0) and undecanoic acid (11:0) are the predominant fatty acids in the three isolates. Moreover, they are short chain ones which fit nicely with the degree of fluidity of their membranes and survival in such environment niche. This is supported by the work of several investigators such as BROCK (1967), [18[19][20][21][22]–23] . Lauric acid or dodecanoic acid which is the most dominant fatty acids with 47.85% was found to have medical importance, especially used for treating several viral infections including (influenza; the flu); swine flu; avian flu; the common cold; fever blisters, cold sores) also Lauric acid have significant role in the treatment of genital herpes caused by herpes simplex virus (HSV), genital warts caused by human papillomavirus (HPV) and HIV/AIDS [24]. It is also used for preventing the transmission of HIV from mothers to children. Lauric acid (C12: 0), is the most potent antimicrobial saturated fatty acid [25], and have Antimicrobial Property Against Propionibacterium Acnes which consider a Therapeutic Potential for Inflammatory Acne Vulgaris [26]. Other uses for Lauric acid include treatment of bronchitis, gonorrehoae, yeast infections, Chlamydia, intestinal infections caused by a parasite called Giardia lamblia, and ringworm. Lauric acid also involved in food industry and manufacturing (soap and shampoo producing). The second prevalent and shortest fatty acid or the Capric acid (11:0) is characterized by having a good chemical stability combined with melting congruency; smaller volume change during phase transition and high latent heat of fusion per unit mass. All of these physical and chemical properties are required to suit the seasonal, which recorded at 70 °C in the winter and 90 °C in the summer.