scholarly journals COMPOSITION AND PROPERTIES OF ESSENTIAL OIL OF SIBERIAN FIR ABIES SIBIRICA LDB., GROWING IN DIF-FERENT AREAS OF THE KIROV REGION

2020 ◽  
pp. 291-297
Author(s):  
Evgeniya Sergeyevna Solovyova ◽  
Tat'yana Anatol'yevna Adamovich
Keyword(s):  
Essential Oil ◽  
Physicochemical Properties ◽  
Acid Number ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Siberian Fir ◽  
Abies Sibirica ◽  
The Village ◽  
Derivatives Of

Siberian fir (Abies sibirica Ldb.) Is a raw material for obtaining valuable essential oil. A change in the composition of the plant's essential oil can serve as a sign of the ecological disadvantage of the territory. The aim of the work was to study the composition and physicochemical properties of Siberian fir essential oil, which grows in different regions of the Kirov region. Sampling sites were distinguished by their location, climate and level of anthropogenic load. Essential oil was obtained by steam distillation. Samples were studied by organoleptic and physicochemical properties, their composition was determined by gas chromatography-mass spectrometry. It was established that the acid number was increased in the obtained oil samples, and oxygen-containing derivatives of terpenes (bornyl acetate) prevailed in their composition. Especially a lot of oxygen-containing substances was found in fir essential oil, which grows in large industrial centers of the region (the cities of Kirov and Kirovo-Chepetsk). The predominance of monoterpene hydrocarbons (camphene, limonene) was found in the composition of fir essential oil from the village of Ilyinskoye. Sesquiterpenoids in the samples were contained in a small amount, and camphor was noted only in the sample of fir oil from the village of Loino. The study confirms the data that with increasing pollution of the territory in the composition of the essential oil of Siberian fir, the share of bornyl acetate and other oxygen-containing compounds begins to increase.

PHYSICOCHEMICAL PROPERTIES AND CHEMICAL COMPOSITION OF THE ESSENTIAL OIL OF AMOMUM XANTHIOIDES FROM A LUOI - THUA THIEN HUE

2018 ◽  
Vol 8 (4) ◽  
pp. 96-101
Author(s):  
Le Nguyen Ngoc ◽  
Tan Nguyen Thi ◽  
Minh Tran Nhat ◽  
Duc Ho Viet ◽  
Hoai Nguyen Thi
Keyword(s):  
Refractive Index ◽  
Chemical Composition ◽  
Essential Oil ◽  
Physicochemical Properties ◽  
Dry Weight ◽  
Acid Value ◽  
Scientific Basis ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Saponification Value

Background: Amomum xanthiodes has been popularly used in traditional medicine. However, the knowledge about essential oil of A. xanthiodes from A Luoi district, Thua Thien Hue province (Viet Nam) is rather poor. In this study, we determined the physicochemical properties and chemical composition of seed essential oil of this species to provide scientific basis, clarify practical value, contribute to the development and conservation of precious medicine resources. Materials and method: Fruits of A. xanthiodes were collected from A Luoi - Thua Thien Hue in June 2017. The seed essential oil was extracted by using the hydrodistillation method. Its physicochemical properties were determined including density, refractive index, acid value, saponification value, ester value, and iod value. This oil was then analysed by gas chromatography/ mass spectrometry (GC/MS). Results: The yield obtained from the hydrodistillation procedures was 1.66% (v/w) calculated on a dry weight basis. Density (at 20oC) was 0.911, refractive index (at 20oC) was 1.4734, acid value was 12.74, saponification value was 110.97, ester value was 98,23, and iod value was 24.89. A total of 15 compounds were found in seed essential oil which belonged to monoterpenes and their derivatives. This oil comprised mainly of bornyl acetate (27.26%), camphor (23.73%), endo-borneol (13.78%), camphene (11.62%), D-limonene (10.96%), and β-myrcene (6.17%). Conclusion: the physicochemical properties and chemical composition of the essential oil of Amomum xanthioides from A Luoi – Thua Thien Hue have been determined. Key words: Amomum xanthiodes, essential oil, physicochemical properties, GC/MS, bornyl acetate, camphor

scholarly journals Contact Toxicity and Repellency of the Essential Oil from Bupleurum bicaule Helm against Two Stored Product Insects

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Xiao-Meng Wei ◽  
Shan-Shan Guo ◽  
Hua Yan ◽  
Xian-Long Cheng ◽  
Feng Wei ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Chemical Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Contact Toxicity ◽  
Lasioderma Serricorne ◽  
Stored Product Insects

Essential oils obtained from many plants showed various kinds of insecticidal properties; some of them have been considered as alternative insecticides for pest control. The present study was aimed at determining the chemical composition of the essential oil from the roots of Bupleurum bicaule Helm, as well as evaluating the contact and repellent activities of the oil and four identified compounds against Lasioderma serricorne and Liposcelis bostrychophila adults. The essential oil was extracted by hydrodistillation, and its components were analyzed by gas chromatography-mass spectrometry (GC-MS). 26 components were determined and the main compounds included trans-2-isopropylbicyclo[4.3.0]non-3-en-8-one (25.9%), 4,5-dimethyl-1,2,3,6,7,8,8a,8b-octahydrobiphenylene (23.5%), and 1,4-dimethoxy-2-tert-butylbenzene (4.3%). It was found that the essential oil exhibited contact toxicity against L. serricorne (LD50 = 11.91 μg/adult), but the contact toxicity against L. bostrychophila could not be observed. The essential oil also showed strong repellent activity against L. serricorne with percent repellency of 100% at 78.63 nl/cm2. Four chemical compounds, 1,4-dimethoxy-2-tert-butylbenzene, bornyl acetate, (2E,4E)-2,4-nonadienal, and β-bisabolene, exhibited various levels of bioactivities. The experimental results indicated that the essential oil of B. bicaule and its individual compounds could be used in insecticidal and repellent strategies for stored product insects.

scholarly journals Colombian fusel oil

2016 ◽  
Vol 36 (2) ◽  
pp. 21 ◽  
Author(s):  
Natalia Montoya ◽  
Jairo Durán ◽  
Fernando Córdoba ◽  
Iván Darío Gil ◽  
Carlos Alexander Trujillo ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Physicochemical Properties ◽  
Solid Phase ◽  
Value Added ◽  
Acid Value ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Fusel Oil ◽  
Complementary Techniques ◽  
Main Components

By-products valorization in bio-fuels industry is an important issue for making the global process more efficient, more profitable and closer to the concept of biorefinery. Fusel oil is a by-product of bioethanol production that can be considered as an inexpensive and renewable raw material for manufacturing value-added products. In this work, results in terms of composition and physicochemical properties of six samples of fusel oil from industrial alcohol facilities are presented. Composition of the main components was established by gas chromatography. Complementary techniques, such as headspace solid-phase microextraction and gas chromatography–mass spectrometry (GC-MS), were used for detection of minor components. Fifty-five compounds were identified. Physicochemical properties such as density, acid value, moisture content and true boiling point curves were determined. Results are useful in the conceptual design of separation strategies for recovering higher alcohols, as well as to consider new options of valorization alternatives for fusel oil.

scholarly journals Essential Oil Composition of Three Species of Thymus Growing Wild in Mazandaran, Iran

2016 ◽  
Vol 49 (2) ◽  
pp. 107-113 ◽  
Author(s):  
H. Ghelichnia
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Geographical Location ◽  
Ecological Factors ◽  
Essential Oil Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Geranyl Acetate ◽  
Bornyl Acetate ◽  
Oil Composition

Abstract The genus Thymus has a wide distributional range and chemical composition of the essential oils varies with geographical location of collection site, climate and other ecological factors. The essential oils of the aerial parts were obtained by hydrodistillation and analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC-MS). Twenty seven components were characterized in the essential oil of T. fedtschenkoi. The major constituents of the oil were carvacrol (69.04%), thymol (5.95%), borneol (5.21%), p-cymene (4.20%), bornyl acetate (2.97%) and 1,8- cineole (2.72%). Twenty two components were characterized in the essential oil of T. trauveterri. The major constituents of the oil were carvacrol (54.02%), thymol (9.29%), borneol (3.51%), p-cymene (18.64%) and γ- terpinene (2.97%). Twenty six components were characterized in the essential oil of T. pubescens. The major constituents of the oil were carvacrol (13.85%), α-terpineol (11.49%), thymol (10%), geraniol (9.48%), α-pinene (8.52%), p-cymene (7.66%), camphor (4.66%), γ-terpinene (3.15%) and myrcene (2.22%). Twenty four components were characterized in the essential oil of T. fallax. The major constituents of the oil were carvacrol (41.84%), p-cymene (12.18%), α-terpineol (11.49%), thymol (10%), γ-terpinene (8.68%), borneol (5.11%), geraniol (4.35%) and geranyl acetate (2.16%).

scholarly journals Effect of Microwave Pretreatment on Gaharu Essential Oil Using Hydrodistillation Method

2020 ◽  
Vol 20 (4) ◽  
pp. 960
Author(s):  
Nurhaslina Che Radzi ◽  
Filzah Anati Kasim
Keyword(s):  
Essential Oil ◽  
Treated Wood ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Chemical Components ◽  
Lower Grade ◽  
Microwave Pretreatment ◽  
Irradiation Power ◽  
Pretreatment Time ◽  
The Cost

Gaharu wood produces an expensive essential oil due to its fragrance and chemical compounds. Normally, the black color wood is used for the extraction of oil because it contains high resin. However, the cost of this resinous wood is very expensive. Therefore, in this study, the raw material with low resin content (identified by the white color of the wood) will be used for the extraction of oil. However, hydrodistillation alone will not produce satisfactory volume. Thus, pretreatment is needed to enhance the amount of essential oil. This paper aims to investigate the effect of microwave pretreatment on gaharu essential oil extraction using the hydrodistillation method for the lower grade wood. The gaharu wood was pre-treated with microwave irradiation power of 800 kW at three different durations which were 1, 2 and 3 min. Later, extraction was performed using the hydrodistillation method for 30 h. The chemical composition of the oil was analyzed using gas chromatography-mass spectrometry (GCMS). The results show that microwave pretreatment produced higher yield (0.0379 wt.%) of gaharu essential oil compared to the extraction of the non-pretreated wood (0.0286 wt.%) in which the increase was 24.55%. The three minutes pretreatment time produced the largest amount of oil (0.0877 wt.%). The outcomes of this study indicated the increase of chemical components of gaharu essential oils such as (+)-Epi-bicyclosesquiphellandrene, gurjunene, α-farnese, estragole, guaiene, valencene, spathulenol, α-cubebene and (-)-Spathulenol in the extraction of the pre-treated wood compared to the non-pretreated one.

scholarly journals INFLUENCE OF HARVESTING TIME ON CHEMICAL COMPOSITION OF THE ESSENTIAL OIL OF ABIES KOREANA TWIGS

2016 ◽  
Vol 8 (12) ◽  
pp. 205
Author(s):  
Min Seo ◽  
Kandhasamy Sowndhararajan ◽  
Songmun Kim
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Steam Distillation ◽  
Essential Oil Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Oil Composition ◽  
Harvesting Time ◽  
Abies Koreana ◽  
Essential Oil Yield

<p><strong>Objective: </strong>In the present study, the influence of harvesting time (April, June, August and October 2015) on the essential oil composition of <em>Abies koreana</em> twigs from Korea was investigated.</p><p><strong>Methods: </strong>The essential oil from the twigs of <em>A. koreana</em> was isolated by steam distillation and its chemical composition was determined by gas chromatography-mass spectrometry (GC-MS).</p><p><strong>Results: </strong>The essential oil yield was found to vary from 0.76 to 1.20% depending on the month of harvesting. The GC-MS analysis revealed the identification of 26 different essential oil components from the twigs harvested in the months of April, June, August and October, which were mostly monoterpene hydrocarbons (57.63–72.38%) followed by oxygenated monoterpenes (18.82–25.96%).<strong> </strong>Harvesting time mainly influenced on the concentration of the major components of the essential oil from the twigs of <em>A. koreana</em>. Limonene (17.38–31.13%), bornyl acetate (13.22–21.17%), camphene (12.56–13.26%), α-pinene (11.05–13.02%), β-pinene (4.55–5.70%), 3-carene (5.21–6.43%) and β-eudesmol (1.49–8.24%) were detected as the major components in the essential oil.</p><p><strong>Conclusion: </strong>The main differences between the essential oil compositions of four different months can be referred to limonene and bornyl acetate. The results showed considerable variations in the composition of essential oil, particularly quantitative variation during different harvesting months.</p>

scholarly journals AGE-SPECIFIC DYNAMICS OF ESSENTIAL OIL CONTENT IN ABIES SIBIRICA BARK. THEORETICAL ASPECTS OF EVALUATION

2021 ◽  
pp. 175-182
Author(s):  
Sergey Viktorovich Ushanov ◽  
Valentina Mikhaylovna Ushanova
Keyword(s):  
Experimental Data ◽  
Essential Oil ◽  
Oil Content ◽  
Age Groups ◽  
Compartment Model ◽  
Parametric Identification ◽  
Simulation Method ◽  
Forest Steppe ◽  
Siberian Fir ◽  
Abies Sibirica

The variability of the essential oil content in Abies Sibirica bark in the Eastern and Western parts of the Krasnoyarsk forest-steppe was evaluated in eight age groups. The model of the age dynamics of changes in the essential oil content in the bark of Abies Sibirica, which is adequate to the experimental data, was obtained. With increasing age of fir, the content of fir oil in the bark increases from 1.4±0.1% of a. s. s. in 20–30 years of age to 2.8±0.2% of a.s.s. at the age of 70–80 years, with further decreases to 0.4±0.1% of a. s. s. in overmature trees. The results of parametric identification of the model for Abies Sibirica growing in the Krasnoyarsk forest-steppe are presented. Based on the results of 50.000 computational experiments, the simulation method estimates the statistics of changes in the model coefficients and 95% of the boundary of the forecast values of the content of fir oil in the bark. A compartment model is proposed that explains the age-specific dynamics of essential oil content in tree greens and Siberian fir bark. The obtained solution compartment model allows us to associate its parameters with the coefficients of models of changes in the content of fir oil in tree greens and bark obtained by processing experimental data.

scholarly journals The Study on Extraction Process and Analysis of Components in Essential Oils of Black Pepper (Piper nigrum L.) Seeds Harvested in Gia Lai Province, Vietnam

Processes ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 56 ◽  
Author(s):  
Thien Hien Tran ◽  
Le Ke Ha ◽  
Duy Chinh Nguyen ◽  
Tan Phat Dao ◽  
Le Thi Hong Nhan ◽  
...  
Keyword(s):  
Essential Oil ◽  
Respiratory Infections ◽  
Mesh Size ◽  
Extraction Process ◽  
Black Pepper ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Piper Nigrum ◽  
Efficient Technology ◽  
Preservation Method

Black pepper (Piper nigrum L.) is a tropical crop with extensive medicinal potential in ethnomedicine and nutraceutical applications. The essential oil of black pepper finds wide applications in inhabitation of respiratory infections and soothing of muscular pains due to its warming and energizing property. The pungent bioactive piperine is responsible for this function, and therefore, efficient technology is required for an optimal extraction process of this compound. In the present article, we have developed a procedure for extracting black pepper essential oil from Vietnam, optimizing conditions that affect the extraction process. The effect of process parameters, namely material size, preservation method, the concentration of sodium chloride, the concentration of soak time, the ratio of material to water, temperature extraction, time extraction on the extraction yield, and relative efficiency were investigated. Results demonstrated that 20 g of black pepper milled with a mesh size of 160 obtained 0.48 g of essential oil (2.4%) at a raw material to water ratio of 1/21 (g/mL) at 150 °C in a time of 5.2 h. GC-MS (Gas chromatography–mass spectrometry) spectra showed that 3-carene (29.21%), D-limonene (20.94%), caryophyllene (15.05%), and β-pinene (9.77%) were present as major components. These results suggested that the essential oil extracted from Vietnamese black pepper is applicable in the manufacturing processes of insecticides and air deodorizers.

scholarly journals Effect of Temperature on the Composition of a Synthetic Hydrocarbon Aviation Lubricating Oil

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1606 ◽  
Author(s):  
Zhuoting Gan ◽  
Ting Yao ◽  
Meng Zhang ◽  
Jianqiang Hu ◽  
Xiaoxiao Liao ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Pour Point ◽  
Kinematic Viscosity ◽  
Molecular Level ◽  
Acid Number ◽  
Lubricating Oil ◽  
Effect Of Temperature ◽  
Gas Chromatography Mass Spectrometry ◽  
Chemical Compositions ◽  
Synthetic Hydrocarbon

Synthetic hydrocarbon aviation lubricating oils (SHALOs) gradually degrade over time when subjected to high temperatures, resulting in their composition and properties varying over the operation lifetime. Therefore, understanding the SHALO degradation properties by elucidating the mechanism on a molecular level, as a function of high temperature, is of interest. A SHALO was subjected to thermal treatment (TT) at 180, 200, 230, 250, 270, or 300 °C for 2 h. The chemical compositions of six TT samples and one fresh oil were analyzed by fourier transform infrared F spectroscopy, advanced polymer chromatography, and gas chromatography/mass spectrometry. Furthermore, the physicochemical properties, such as kinematic viscosity, pour point, and acid number, of seven samples were determined. The oil samples were grouped by cluster analysis (CA) using a statistical method. The SHALO was identified to comprise 20 functional groups, including comb-like alkanes, long-chain diesters, amines, phenols, and other compounds. TT at <230 °C caused partial cracking of the SHALO base oils, with a concomitant change in the antioxidant content and type, and the polycondensation reactions were dominant. The observed antioxidant changes were not obvious from TT at >230 °C. A large number of small-molecule compounds were detected, including n-alkanes and olefins. TT at 250 °C was shown to be an important threshold for the kinematic viscosity, pour point, and acid number of the samples. Below 250 °C, the sample properties were relatively stable; but at elevated TT temperatures (>250 °C), the properties were observed to dramatically degrade. As the sample color was highly sensitive to temperature, the TT temperature induced rapid and significant color changes. The CA analysis results for the oil compounds at the molecular level were in good agreement with observed changes in the physicochemical properties at the macro level.

scholarly journals COMPARATIVE ANALYSIS OF ESSENTIAL OIL THE VEGETABLE RAW MATERIAL SCHISANDRA CHINENSIS: LEAVES, WOODY STEMS, RHIZOMES WITH ROOTS

2019 ◽  
pp. 173-180
Author(s):  
Юрий (Yuriy) Алексеевич (Alekseevich) Морозов (Morozov) ◽  
Ифрат (Ifrat) Назимович (Nazimovich) Зилфикаров (Zilfikarov) ◽  
Елизавета (Elizaveta) Владимировна (Vladimirovna) Морозова (Morozova) ◽  
Аслан (Aslan) Мурадалиевич (Muradalievich) Алиев (Aliev) ◽  
Тимур (Timur) Алгасанович (Algasanovich) Ибрагимов (Ibragimov)
Keyword(s):  
Comparative Analysis ◽  
Essential Oil ◽  
Essential Oils ◽  
Raw Materials ◽  
Component Composition ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Schisandra Chinensis ◽  
Marker Substances ◽  
Vegetable Raw Materials

This paper presents the results of an experimental study of the component composition of essential oil samples obtained from various vegetable raw materials of Schisandra chinensis (Schisandra chinensis (Turcz.) Baill.): branches (woody stems), rhizomes with roots and leaves. The extraction of essential oils was carried out by distillation with water vapor followed by extraction from the distillate with ethoxyethane. The largest yield of essential oil in terms of completely dry raw material is registered from rhizomes with roots – 0.99%; the yield from leaves and branches was approximately the same: 0.51% and 0.52%, respectively. A comparative analysis of the component composition of the obtained essential oils was carried out using the gas chromatography / mass spectrometry method. In the essential oil of the leaves 29 detected compounds (identified by 21 connection; dominant components: Cyclohexylmethyl ether sulphurous acid, (+)-trans-nerolidol, δ-cadinene, Tridec-(2E)-EN-1-ol), woody stems 80 connections (identified 65 compounds; dominant components: ß-pinene, Camphene, Bornylacetate, (+)-trans-nerolidol, p-tsimen, Tridecan-2-it, δ-cadinene), rhizomes with roots 78 of the compounds (60 compounds identified; dominant components: δ-cadinene, Bornylacetate, β-pinene, Camphene, Nerolidol-(E), Tridecan-2-it, γ-cadinene, Borneol). For each sample of the studied essential oils selectivity and marker substances were established.

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