Assessment of the pH value of hydrolates Taraxacum officinale

2021 ◽  
Author(s):  
Z.G. Kaurova ◽  
◽  
M.V. Umerenkova
Keyword(s):  
Essential Oils ◽  
Ph Value ◽  
Taraxacum Officinale ◽  
Hydrogen Index ◽  
Cosmetic Products ◽  
Distillation Product

Hydrolates are a secondary distillation product in the manufacture of essential oils. The article presents a study of the hydrogen index (pH) of dandelion hydrolates (Taraxacum officinale). Along with essential oils, hydrolates are components of cosmetic products that require mandatory safety checks.

scholarly journals Influence of pH on the dynamics of the wound process in the postoperative period

2021 ◽  
Vol 11 (2) ◽  
pp. 87-91
Author(s):  
А. М. Morozov ◽  
А. R. Armasov ◽  
А. N. Sergeev ◽  
S. V. Zhukov ◽  
Е. А. Sobol ◽  
...  
Keyword(s):  
Postoperative Period ◽  
Ph Value ◽  
Healing Process ◽  
Hydrogen Index ◽  
Biochemical Reactions ◽  
Postoperative Wound ◽  
Wound Exudate ◽  
Initial Values ◽  
Initial Ph ◽  
Influence Of Ph

The wound process is a set of stages that successively replace each other and as a result lead to epithelization of the skin and closure of the wound defect. The development of the wound process is influenced by the pH value of the wound contents, which determines the rate of all biochemical reactions occurring in the wound. In the course of the study, patients were measured for wound exudate in the postoperative period. It was noted that in patients with the initial values of the hydrogen index, which was 7, a more effective healing process of the postoperative wound was observed, while in patients with the initial pH value of 8, the wound process took a protracted character. 

Preservative systems containing essential oils in cosmetic products

2002 ◽  
Vol 24 (1) ◽  
pp. 53-59 ◽  
Author(s):  
A. M. Maccioni ◽  
C. Anchisi ◽  
A. Sanna ◽  
C. Sardu ◽  
S. Dessi
Keyword(s):  
Essential Oils ◽  
Cosmetic Products

scholarly journals Essential Oils and Their Individual Components in Cosmetic Products

Cosmetics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 114
Author(s):  
Eduardo Guzmán ◽  
Alejandro Lucia
Keyword(s):  
Essential Oils ◽  
Antioxidant Properties ◽  
Cosmetic Products ◽  
Active Ingredients ◽  
Design And Optimization ◽  
Cosmetic Industry ◽  
International Regulations ◽  
Potential Applications ◽  
The Many ◽  
Botanical Extract

The current consumer demands together with the international regulations have pushed the cosmetic industry to seek new active ingredients from natural renewable sources for manufacturing more eco-sustainability and safe products, with botanical extract being an almost unlimited source of these new actives. Essential oils (EOs) emerge as very common natural ingredients in cosmetics and toiletries as a result of both their odorous character for the design and manufacturing of fragrances and perfumes, and the many beneficial properties of their individual components (EOCs), e.g., anti-inflammatory, antimicrobial and antioxidant properties, and, nowadays, the cosmetic industry includes EOs or different mixtures of their individual components (EOCs), either as active ingredients or as preservatives, in various product ranges (e.g., moisturizers, lotions and cleanser in skin care cosmetics; conditioners, masks or antidandruff products in hair care products; lipsticks, or fragrances in perfumery). However, the unique chemical profile of each individual essential oil is associated with different benefits, and hence it is difficult to generalize their potential applications in cosmetics and toiletries, which often require the effort of formulators in seeking suitable mixtures of EOs or EOCs for obtaining specific benefits in the final products. This work presents an updated review of the available literature related to the most recent advances in the application of EOs and EOCs in the manufacturing of cosmetic products. Furthermore, some specific aspects related to the safety of EOs and EOCs in cosmetics will be discussed. It is expected that the information contained in this comprehensive review can be exploited by formulators in the design and optimization of cosmetic formulations containing botanical extracts.

scholarly journals FOAMS STABILIZATION BY HYDROPHOBIZED OXIDES OF VARIOUS CHEMICAL NATURE

2020 ◽  
Vol 63 (3) ◽  
pp. 23-29
Author(s):  
Natalya G. Vilkova ◽  
Svetlana I. Mishina ◽  
Evgeniy D. Deputatov
Keyword(s):  
Titanium Dioxide ◽  
Titanium Oxide ◽  
Acidic Medium ◽  
Ph Value ◽  
Life Time ◽  
Hydrogen Index ◽  
Wetting Angle ◽  
Average Particle ◽  
Disperse Systems ◽  
Initial Suspension

The properties of foams stabilized by hydrophobized titanium oxide and silica are studied. It was shown that when hexylamine was added to silica suspensions (in an amount of ≥ 10 mmol/l), the values of the hydrogen index corresponded to the alkaline region. Moreover, the stability of such foams increases with the increasing concentration of hexylamine and an increase in the relative degree of hydrophobization to ng = 2.75 mmol/g. However, rapid destruction of disperse systems is possible when a certain degree of hydrophobization is achieved (for example, ng≥3 in aerosil suspensions), which is due to aggregation of particles in the initial suspension. The dependence of the lifetime of these dispersed systems on the hydrogen index (pH) is shown. The most stable disperse systems were formed at the pH value of 5, which is close to the isoelectric point of the oxide. Foams obtained from the suspension of the composition: 20% titanium oxide + 76.6 mmol/l hexylamine remained stable for four days or more at pH = 5 and a change in the relative hydrophobicity of the surface (ng) from 0.383 to 1.27 mmol/g. With a significant increase in the degree of hydrophobization of the surface to 4.6 mmol/g and the same pH value, foaming was insignificant (the layer height (h) was 0.2 cm) and life time t≈10 sec.  Probably fixing the particles at the liquid-gas interface is an irreversible process only when a certain degree of hydrophobicity is achieved. To explain the possible causes of change stability of the foam containing the titanium dioxide from the pH we have investigated the distribution of particles according to their sizes by the method of sedimentation analysis. It was found that at pH=10 the fractional composition of the suspension with an average radius of 3 µm was equal to 50%, at the same time the maximum radius was 21 µm; the value of the wetting angle of the particles was equal to 40.8º. In an acidic medium (pH=2-3) and at pH=5, the fraction content with an average particle radius of 5 µm was 29% and 30%, respectively. However, low (14.7º) values of the wetting angle at pH=2 can cause low stability of foams in an acidic environment. Highly stable foams were obtained by changing the viscosity of the dispersion medium in suspensions of hydrophobized titanium oxide. When adding glycerol to the suspension composition: 9.0% titanium dioxide + 0.7% hexylamine, pH=9, gel foam was obtained, which was not destroyed within 10 days. However, in an acidic medium with the addition of the same amount of glycerol, the formation of a stable dispersed system was not observed.

scholarly journals Study on Preservation of Chilled Beef with Natural Essential Oil Nanocapsules

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Bin Xi ◽  
Yaqin Gao ◽  
Tianfen Guo ◽  
Weihong Li ◽  
Xiaoling Yang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Vitamin B6 ◽  
Antibacterial Effect ◽  
Ph Value ◽  
Research Data ◽  
Beef Products ◽  
Processing Plants ◽  
Cinnamon Essential Oil ◽  
Beef Prices

Beef is rich in amino acids and vitamin B6, carnitine, potassium, protein, and other nutrients. It can improve the body’s ability to resist disease and is especially suitable for growth, development, and postoperation and postrehabilitation care. Under such circumstances, the demand for beef consumption in various countries continues to grow steadily. At present, domestic beef prices continue to rise, and beef supply is insufficient. In addition, fresh beef is easy to be infected with microorganisms in the process of cold storage, which makes fresh beef deteriorated. Therefore, it is very important to add preservatives to prolong the shelf life of chilled beef. In this paper, the preservation of chilled beef with nanocapsules made of natural essential oil from plant extracts was studied. In this study, cumin, Zanthoxylum, ginger, cinnamon, clove, and thyme were selected to study the effect of six kinds of essential oils on beef preservation through comparative experiments. On the basis of such research data, the six kinds of essential oils were compounded, respectively, and different nanoessential oil capsules were applied to the fresh-keeping of chilled beef to make different kinds of nanoessential oil capsules. Through the experiment, the compound essential oil with better preservation effect was obtained. And through the comparison, cinnamon essential oil has obvious antibacterial activity, while ginger essential oil has the worst antibacterial effect. The pH value of beef can be changed and the degradation rate of protein in beef will be slowed down by applying appropriate amount of decomposed plant essential oil to beef samples. Through the above experimental results, we applied the compound essential oil to the preservation of cold and fresh beef at nanometer level and found that the effect was significant, which was worthy of application in major beef products processing plants.

QUALITY CONTROL OF ZINGIBER OFFICINALE OILS IN PRODUCT FORMULATIONS

2015 ◽  
Vol 77 (3) ◽  
Author(s):  
Nurhazwani Mohd Hirmizi ◽  
Saidatul Husni Saidin ◽  
Nor Azah Mohamad Ali ◽  
Azrina Aziz ◽  
Mailina Jamil ◽  
...  
Keyword(s):  
Essential Oils ◽  
Ph Value ◽  
Solid Phase ◽  
Chemical Constituents ◽  
Skin Irritation ◽  
Zingiber Officinale ◽  
Gas Chromatography Mass Spectrometry ◽  
Limit Test ◽  
Main Components

Zingiber officinale (ginger) is one of the most commonly used flavouring ingredients in food and culinary dishes. The essential oils are known for its unique aroma and characteristic and widely used as therapy. In this study, the essential oil was formulated as massage oil and the quality of massage oil was evaluated on its physicochemical properties, i.e. colour, odour, density, viscosity, refractive index and pH value. The efficacy of the product was determined by the value of the melanin (coloured pigment) and erythema (redness of skin) as well skin irritation analysis (Finn Chamber Patch). The massage oil was also tested using Head Space-Solid Phase Microextraction-Gas Chromatography Mass Spectrometry (HS-SPME-GCMS) to determine the presence of ginger’s essential oils important chemical constituents in the massage oil. Analysis revealed the presence of a-zingiberene, neral and geranial which are the main components found in ginger massage oil. For safety use, the finished product was tested for microbial enumeration test and heavy metal analysis. Result showed that there was no microbial contamination and meets the British Pharmacopoeia 2011 specifications in topical use. Meanwhile the results of limit test for heavy metals were found to be below detectable levels of National Pharmaceutical Control Bureau specifications.

Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions

2021 ◽  
pp. 66-72
Author(s):  
Sergey V. Prokunin ◽  
Andrey N. Shchipunov ◽  
Daria A. Vengina ◽  
Frank Bastkowskiy ◽  
Emrah Uysal ◽  
...  
Keyword(s):  
Ph Value ◽  
Aqueous Media ◽  
Phosphate Buffer Solution ◽  
Hydrogen Index ◽  
National Standards ◽  
Measuring Instruments ◽  
Buffer Solution ◽  
Working Standard ◽  
Average Value ◽  
State Register

The enormous needs in ensuring the measurement of the hydrogen index in various industries and the national economy of Russia make the measurement of the hydrogen index one of the most important methods for monitoring aqueous media. In 2013, work was carried out to enter into the State Register of Measuring Instruments of the Russian Federation a buffer solution and a standard titer with a pH value of 7.00 – a working pH standard of the 2nd category, which is one of the most demanded of non-standard solutions for verification and calibration pH measuring instruments. To confirm the metrological characteristics, pilot comparisons were organized within COOMET. This article presents the results of a pilot comparison to determine the pH of a phosphate buffer solution – a working standard of рН=7.00. 8 metrological institutes and 10 metrological organizations took part in the comparisons. The results obtained showed that the overwhelming majority of the participants in the comparisons presented the results of pH measurements, which have an uncertainty not exceeding ±0.03 of the average value, which is an acceptable criterion for measuring the pH.

Comparison of Biomaterials from Essential Oils in Five Parts of Magnolia sieboldii

2013 ◽  
Vol 442 ◽  
pp. 142-146 ◽  
Author(s):  
Guang Ren Sun ◽  
Feng Guo Du ◽  
Rui Jian Wang
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Hierarchical Cluster ◽  
Stem Bark ◽  
Chemical Components ◽  
Chemical Compositions ◽  
Root Bark ◽  
Cosmetic Products ◽  
Magnolia Sieboldii

Essential oils were extracted from biomaterials of root bark, stem bark, twigs, leaves and flowers fromMagnolia sieboldiiby the means of steam distillation. Their chemical compositions of these essential oils were analyzed by GC-MS method and their flavor properties were evaluated based on the basic media of cold creams. The results showed that the highest yield of essential oils belonged to the essential oil from root bark and the lowest belonged to that from leaves; As to flavor, the parts of leaves and flower are more suitable for exploiting cosmetic products; Twigs, flowers and leaves belonged to the same cluster by Hierarchical cluster analysis on chemical components from these essential oils. The essential oil from leaves should be further exploited due to its good flavor for cosmetic products and a kind of newable natural resources, although this essential oil had lower extraction yeilds.

scholarly journals CRITERIA FOR SELECTING AEROSOL PACKAGING AND DETERMINING THE OPTIMUM QUANTITY OF A PROPELLANT

2020 ◽  
Vol 4 ◽  
pp. 15-20
Author(s):  
Bogdan Putyatin ◽  
Ekaterina Kunitsia ◽  
Natalia Sytnik
Keyword(s):  
Essential Oils ◽  
Mass Fraction ◽  
Negative Impact ◽  
Excess Pressure ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Correct Selection ◽  
Cosmetic Products ◽  
Active Substances ◽  
Selection Of

Development of a new generation of functional antiage cosmetics is a most important area of cosmetic industry development. An integral part of such products are biologically active substances (BAS) with essential oils, being among the sources of which. Each essential oil is characterized by a well balanced unique composition of biologically active substances. Development of new cosmetic products consists of correct selection of the required composition of components with required properties and selection of a suitable package, preserving product properties throughout its shelf life. During production of cosmetic products in aerosol package a number of issues are solved, unlike with antiage-products in form of creams in customary tubes. The degree of oxidation-reduction reactions, having negative impact on the properties of essential oils, is substantially reduced. The concentration providing for the optimum degree of evacuation and excess pressure in the packaging are essential issues. The aim of this research is to determine the degree of evacuation of the contents, excess pressure, and mass fraction of a propellant in the product test samples to find the samples of aerosol package with optimum parameters. A number of tests to determine the degree of evacuation of the contents from aerosol package, excess pressure and a mass fraction of a propellant have been performed. The greatest degree of evacuation of products was observed with mass fraction of propellant of 13.79%. Based on the results of the tests for excess pressure in aerosol packaging, it has been found, that with mass fraction of a propellant of 13.79% excess pressure is 0.4 MPa, which was taken as an optimum value. The test showed that the mass of a propellant of 16 g evacuates the product from aerosol package to the maximum extent and does not exceed the acceptable limits for excess pressure (0.2–0.6 MPa)

scholarly journals DESENVOLVIMENTO E AVALIAÇÃO DA EFICÁCIA DE COSMETICOS SENSORIAIS COM AÇÃO ANTIESTRESSE

2018 ◽  
Vol 10 (Especial 5) ◽  
pp. 29-34
Author(s):  
Alessandra Serafim Oliveira ◽  
Marcos Alberto Zocoler
Keyword(s):  
Essential Oils ◽  
Emotional State ◽  
The Body ◽  
Cosmetic Products ◽  
Inclusion Criteria ◽  
Men And Women ◽  
Degree Of Hydration ◽  
Beneficial Effects ◽  
Tukey Test ◽  
Informed Consent Form

Neurocosmetics are cosmetics that act in the body in a similar way to endogenous neuromediators, exerting beneficial effects on the health and beauty of skin, hair and cutaneous attachments. Essential oils of jasmine and lavender, used in neurocosmetics, act on the receptors of the skin acting in the emotional state, alleviating the symptoms of anxiety, stress, depression, nervous tension and insomnia. Two formulations have been developed: Body Bath Oil and Moisturizing Cream containing essential oils of jasmine and lavender. A sample of 20 people (men and women), who duly approved the inclusion criteria of the research: Accept participate in the 30 Colloquium Vitae, vol. 10, n. Especial 5, Jul–Dez, 2018, p.29-34. ISSN: 1984-6436. DOI: 10.5747/cv.2018.v10.nesp5.000329 research signing the Free and Informed Consent Form. Judges will use neurocosmetics for 14 days. The anti-stress efficacy of each product was evaluated through structured questionnaires. It was also evaluated the sensorial of the cosmetic products after its use. The attributes that were evaluated in this experiment will be: appearance of the product, ease of spreading, degree of hydration and fragrance, after its use. The skin of the judges was analyzed using the Skin Analyzer Pen SK-02. The data collected were evaluated through analysis of variance ANOVA, where the results were considered significant when the probability was less than 5% by the Tukey test. The twenty volunteers who participated in this research, who used body oil and moisturizer both containing the essential oils of lavender and jasmine, reported that these products were effective in reducing the level of stress. The sensations observed after the application of the body oil and moisturizer on the skin were refreshment, decreased nervous tension, tranquility, comfort and softness. Through the statistical analysis it was verified that there were no significant differences of acceptance among the formulations in the attributes: ease of spread, sensation in the skin and intention to buy. So all volunteers reported that they would buy the products if they were marketed

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