Effect Of Natural Oil Research Articles

Использование натуральных масел в уходе за кожей новорожденных и младенцев

The skin of a newborn is a delicate structure that is the first barrier protecting from exposures. Skin conditions in newborns are common due to adaptation to novel environment. The choice of an adequate moisturizing and skincare product is still an important issue. This paper discusses the structural and functional specificity of the skin of newborns and the role of lipids in the healthy functioning of skin barrier. Inadequate acid mantle and skin microbiome, gradual maturation of immune defense account for the frequent occurrence of infective inflammatory skin disorders, in particular, in skincare defects. Fatty oils are commonly used as emollients or the basis of care products, while essential oils and aromatic compounds are widely applied in perfume and cosmetic industries (including the production of skincare products for babies and toddlers). The effects of natural oils (e.g., olive, sunflower-seed, mustard-seed oil etc.) on skin hydration and permeability and their ability to induce inflammation. A single standard for certifying natural cosmetics including skincare products for babies is highlighted. KEYWORDS: skin, newborn, care product, natural oil, essential oil. FOR CITATION: Ryumina I.I. Natural oils for skincare of newborns and infants. Russian Journal of Woman and Child Health. 2021;4(2):178– 183. DOI: 10.32364/2618-8430-2021-4-2-178-183.

Multi-Center Randomized Clinical Study of The Effects of Natural Oils on Xerosis and Skin Barrier Properties

Objective: To compare the effect of natural oils and white petrolatum on skin barrier function in patients with xerosis.Design, Setting, and Participants: Randomized, open label, comparison pilot study (NCT03093597).Interventions: Participants were randomized to apply 1 of 4 moisturizers to assigned treatment areas twice daily for 2 weeks. Clinical dry skin score, stratum corneum hydration, and transepidermal water loss (TEWL) were assessed at baseline, 1 week, and 2 weeks.Results: Thirty-two participants completed the study. Neither TEWL nor hydration were statistically different among the moisturizers at each visit. All four moisturizers led to significant initial increase in TEWL at week 1 (p < 0.05) with an associated increase in hydration for coconut oil, jojoba oil, and white petrolatum. All four moisturizers led to significant increase in hydration by week 2 (p < 0.01). The preferred moisturizers were almond oil and coconut oil, which were most “liked” by 38% and 31% of the participants, respectively. The least preferred moisturizer was white petrolatum. Conclusions: Almond oil, jojoba oil, and coconut oil significantly increased hydration after 2 weeks, and are as effective as white petrolatum as daily moisturizers for xerosis. The participants preferred natural oils to white petrolatum, implying that these moisturizer options may improve patient compliance.

Enhanced biotransformation of dehydroepiandrosterone to 3β,7α,15α-trihydroxy-5-androsten-17-one with Gibberella intermedia CA3-1 by natural oils addition.

Dihydroxylation of dehydroepiandrosterone (DHEA) is an essential step in the synthesis of many important pharmaceutical intermediates. However, the solution to the problem of low biohydroxylation conversion in the biotransformation of DHEA has yet to be found. The effects of natural oils on the course of dihydroxylation of DHEA to 3β,7α,15α-trihydroxy-5-androsten-17-one (7α,15α-diOH-DHEA) were studied. With rapeseed oil (2%, v/v) addition, the bioconversion efficiency was improved, and the 7α,15α-diOH-DHEA yield was increased by 40.8% compared with that of the control at DHEA concentration of 8.0g/L. Meantime, the ratio of 7α,15α-diOH-DHEA to 7α-OH-DHEA was also increased by 4.5 times in the rapeseed oil-containing system. To explain the mechanism underlying the increase of 7α,15α-diOH-DHEA yield, the effects of rapeseed oil on the pH of the bioconversion system, the cell growth and integrity of Gibberella intermedia CA3-1, as well as the membrane composition were systematically studied. The addition of rapeseed oil enhanced the substrate dispersion and maintained the pH of the system during bioconversion. Cells grew better with favorable integrity. The fatty acid profile of G. intermedia cells revealed that rapeseed oil changed the cell membrane composition and improved cell membrane permeability for lipophilic substrates.

Effect of natural oils on the thermal stability and degradation kinetics of recycled polypropylene wood flour composites

Recycled polypropylene was reinforced with wood fibers that were non‐treated and treated with different natural oils (hexanoic, octanoic, decanoic and dodecanoic acids). The thermal properties, morphology, kinetics and thermodynamic parameters were investigated. The use of natural oils as coupling agents clearly improved the interfacial adhesion with the matrix and increased the thermal stability of the composites. Octanoic acid improved the thermal stability of the composite the most compared with the other evaluated natural oils. The improvement caused by this natural oil is similar to that promoted by the addition of PPgMA. The thermal stability of the composite was affected by the boiling temperature and the chain length of the acid used. POLYM. COMPOS., 35:1935–1942, 2014. © 2014 Society of Plastics Engineers

Metal- and Base-Free Combinatorial Reaction for C-Acylation of 1,3-Diketo Compounds in Vegetable Oil: The Effect of Natural Oil

C-acylation of 1,3-diketo compounds has been done successfully employing 1,3 diketo compounds, oxalyl chloride, and phenol derivatives through metal, base, and toxic solvent-free protocol. Dioxinon...

Post-Emergence Control of Broomrape with Natural Plant Oils

ABSTRACT The effect of natural oils on broomrape (Orobanche cernua Loefl.) was assessed in a naturally infested tobacco (Nicotiana tabacum L.) field at the Agricultural Research Station, Nipani, India, during 1994–95. Natural oils which are available at low cost and biodegradable differed in their ability to kill the young broom-rape spikes. Neem (Azadirachta indica Juss.), coconut (Cocas nucifera L.), and sunflower (Helianthus annuus L.) oils showed knock-down effects on the bud part of the parasite within 2–3 days, castor (Ricinus communis L.) and niger (Guizotia abyssinica (L. fil.) Cass.) oils killed the buds within 3–4 days. Mustard (Brassica juncea (L.) Czernjaew) oil took 5 days to kill the bud. Coconut and sunflower oils also killed the broomrape stem more quickly than niger and castor oils. Neem oil and mustard oil did not kill the stem part of the parasite. These findings give new information on relative efficiency of different plant oils in controlling broomrape. None of the oils was phytotoxic to tobacco. After optimization of application techniques the use of such oils in practice will be cheap, environmentally safe and effective.

Effects of natural oils on foam collapse in bioprocesses

The foam collapse and foam formation properties of four different simulated fermentation media were compared in the presence and absence of natural oils. It was found that optimum effective natural oil concentration resulting in optimum foam suppression did not always correspond with the optimum for foam collapse, nor the optimum for maximum foam collapse rate.

Effects of natural oils and surfactants on cellulase production and activity

AbstractEmulsification of natural oils by a surfactant increases their efficiency as chemical antifoams. The presence of low concentrations of fatty acids or other surfactants have been reported to inhibit or stimulate microbial growth and/or product formation.The effects of different natural oils, Tween 80 and saponin on growth and cellulase production by T. reesei and S. pulverulentum have been investigated. It was found that in general, emulsification leads to higher cellulase activities in both cultures, though there are variations in enzyme levels depending on the presence or absence of Tween 80 and of different oils in growth media as well as the substrates used for cellulase assay.

Possible Effect of Oil of Thyme on the Incidence of Spontaneous Cancer in Mice

In 1932 (1), a report was made on the possible effect of natural oil of Gaultheria on the incidence of cancer. The observations suggested the possibility that small amounts of that oil in a basic diet consisting of rolled oats, meat scrap, powdered milk, and salt delayed the time at which spontaneous tumors occurred in a series of mice belonging to the highly inbred dilute brown stock. The question arose whether this observation would also apply to other of the essential oils. To test out this idea, a number of mice were given oil of thyme in addition to their otherwise standard diet. The oil was given daily, in the ratio of one drop of oil to 20 gms. of the basic oatmeal diet.