scholarly journals Modeling the kinetics of essential oil hydrodistillation from plant materials

2013 ◽  
Vol 67 (5) ◽  
pp. 843-859 ◽  
Author(s):  
Svetomir Milojevic ◽  
Dragana Radosavljevic ◽  
Vladimir Pavicevic ◽  
Srdjan Pejanovic ◽  
Vlada Veljkovic
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Physical Model ◽  
Steam Distillation ◽  
Sigmoid Function ◽  
Plant Materials ◽  
Operational Conditions ◽  
First Order ◽  
Kinetics Of ◽  
And Diffusion

The present work deals with modeling the kinetics of essential oils extraction from plant materials by water and steam distillation. The experimental data were obtained by studying the hydrodistillation kinetics of essential oil from juniper berries. The literature data on the kinetics of essential oils hydrodistillation from different plant materials were also included into the modeling. A physical model based on simultaneous washing and diffusion of essential oil from plant materials were developed to describe the kinetics of essential oils hydrodistillation, and two other simpler models were derived from this physical model assuming either instantaneous washing followed by diffusion or diffusion with no washing (i.e. the first-order kinetics). The main goal was to compare these models and suggest the optimum ones for water and steam distillation and for different plant materials. All three models described well the experimental kinetic data on water distillation irrespective of the type of distillation equipment and its scale, the type of plant materials and the operational conditions. The most applicable one is the model involving simultaneous washing and diffusion of the essential oil. However, this model was generally inapplicable for steam distillation of essential oils, except for juniper berries. For this hydrodistillation technique, the pseudo first-order model was shown to be the best one. In a few cases, a variation of the essential oil yield with time was observed to be sigmoidal and was modeled by the Boltzmann sigmoid function.

scholarly journals Kinetic Modeling of Essential Oil Extraction by Hydrodistillation of Xylopia aethiopica (Dunal) A. Rich Fruits from Congo-Brazzaville

2021 ◽  
Vol 2 (3) ◽  
pp. 105-110
Author(s):  
Thomas Silou ◽  
Jean Bruno Bassiloua ◽  
Rosalie Kama Niamayoua
Keyword(s):  
Experimental Data ◽  
Essential Oil ◽  
Diffusion Control ◽  
First Order ◽  
Extraction Solvent ◽  
Peleg Model ◽  
Congo Brazzaville ◽  
Kinetics Of ◽  
And Diffusion ◽  
Xylopia Aethiopica

The extraction kinetics of the essential oil of Xylopia aethiopica (Dunal) A. Rich by hydrodistillation was studied for modeling its process and optimizing its yield. The oils obtained, analyzed by GC/MS, consists mainly of pinenes, sabinene, myrenal, terpinene-4-ol, limonene. Experimental data were fitted into first and second order kinetics for a 2-steps extraction, washing and diffusion, of the phenomenological model, according to the hypothesis used. The essential oil which moves inner vegetable cells by diffusion and is extracted at the surface of the particle by washing with an extraction solvent. When the washing step is instantaneous compared to that of diffusion, the mechanism, which is under diffusion control, admits first order. Considering both washing and diffusion steps, kinetic order became 2, in agreement with the Peleg model. The Monod and Langmuir models also fitted experimental data. All these models validated by the experimental data with determination coefficients R2> 0.96 can be used for optimizing the extraction of the essential oil of Xylopia aethiopica (Dunal) A. Rich.

scholarly journals Kinetic Modeling of Essential Oil Hydro-Distillation from Peels of Pomelo (Citrus grandis L.) Fruit Grown in Southern Vietnam

2021 ◽  
Vol 50 (11) ◽  
pp. 3251-3261
Author(s):  
Phat Dao Tan ◽  
Xuan Phong Huynh ◽  
Huynh Cang Mai ◽  
Giang Bach Long ◽  
Van Muoi Nguyen
Keyword(s):  
Essential Oil ◽  
Diffusion Model ◽  
Economic Value ◽  
Extraction Process ◽  
First Order ◽  
First Order Kinetics ◽  
Estimated Parameters ◽  
Wide Range ◽  
Kinetics Of ◽  
And Diffusion

Thorough understanding of kinetics plays a key role in improving existing industrial processes. In this study, we attempted to model the kinetics of the hydro-distillation process that produces essential oil from peels of pomelo (Citrus grandis L.) fruit, which is a product with high economic value and a wide range of applications. We first determined the optimal water-to-material ratio for attaining maximal oil yield. Then, further experimental attempts were carried out at different distillation rates to generate experimental data to fit three kinetic models, namely first-order kinetics model, instantaneous washing, followed by diffusion model and simultaneous washing and diffusion model. Overall, the three models have well described the experimental kinetic data on hydro-distillation (R2> 90%). Of which, the simultaneous washing and diffusion model attaining the R2 of 99.97% was chosen as the most suitable to describe the kinetics of the extraction process. Estimated parameters also shown that the washing stage occurs more rapidly than the later, diffusion stage. GC-MS results showed that the obtained oil sample was characterized by the dominance of the D-Limonene compound (97.873%).

Submerged upflow biotower operation and computer simulation

1994 ◽  
Vol 30 (11) ◽  
pp. 143-146
Author(s):  
Ronald D. Neufeld ◽  
Christopher A. Badali ◽  
Dennis Powers ◽  
Christopher Carson
Keyword(s):  
Computer Simulation ◽  
Benzoic Acid ◽  
Computer Model ◽  
Rate Constants ◽  
Batch Mode ◽  
Operational Conditions ◽  
First Order ◽  
Low Concentrations ◽  
Biological Transformation ◽  
Kinetics Of

A two step operation is proposed for the biodegradation of low concentrations (< 10 mg/L) of BETX substances in an up flow submerged biotower configuration. Step 1 involves growth of a lush biofilm using benzoic acid in a batch mode. Step 2 involves a longer term biological transformation of BETX. Kinetics of biotransformations are modeled using first order assumptions, with rate constants being a function of benzoic acid dosages used in Step 1. A calibrated computer model is developed and presented to predict the degree of transformation and biomass level throughout the tower under a variety of inlet and design operational conditions.

Comparison of Terpene Composition in Engelmann Spruce (Picea engelmannii) Using Hydrodistillation, SPME and PLE

2004 ◽  
Vol 59 (9-10) ◽  
pp. 641-648 ◽  
Author(s):  
Marek Mardarowicz ◽  
Dorota Wianowska ◽  
Andrzej L. Dawidowicz ◽  
Ryszard Sawicki
Keyword(s):  
Essential Oils ◽  
Steam Distillation ◽  
Solid Phase ◽  
Picea Engelmannii ◽  
Enzymatic Reactions ◽  
Plant Materials ◽  
Engelmann Spruce ◽  
Pressurised Liquid Extraction ◽  
Conifer Trees ◽  
Spruce Needles

Abstract Terpenes emitted by conifer trees are generally determined by analysing plant extracts or essential oils, prepared from foliage and cones using steam distillation. The application of these procedures limits experiments to cut plant materials. Recently headspace techniques have been adopted to examine terpene emission by living plants. This paper deals with the application of solid-phase micro-extraction (SPME) for the analysis of terpenes emitted by conifers foliage of Engelmann spruce (Picea engelmannii), including its seedlings. The compositions of SPME extracts obtained for destroyed and non-destroyed old and juvenile spruce needles were compared with the compositions of essential oils and pressurised liquid extraction (PLE) extracts corresponding to the same plant materials. No substantial differences have been found in the qualitative terpene composition estimated by analysing essential oil and PLE and SPME extracts from non-destroyed old and juvenile foliage. The disintegration of spruce needles results in the formation of a significant amount of myrcene in the case of the old conifer foliage and non-terpenoic compounds in the case of juvenile conifer foliage. This phenomenon can be attributed to enzymatic reactions occurring in the destroyed plant cells.

Enzyme‐assisted extraction of essential oils from Syzygium aromaticum

2011 ◽  
Vol 1 (6) ◽  
pp. 248-254
Author(s):  
R. Amudan ◽  
D. V. Kamat ◽  
S. D. Kamat
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Antibacterial Effect ◽  
Chemical Extraction ◽  
Syzygium Aromaticum ◽  
Clove Oil ◽  
Zone Size ◽  
Structure Quality ◽  
Assisted Extraction

The essential oil of clove ( Syzygium aromaticum) holds an important positionamongst widely used essential oils. A typical steam distillation processfor the extraction of clove oil provides a 10.1% yield. Recent studies involvedthe use of enzymes such as pectinase, amylase, lignocellulase, and cellulaseon the powder of clove buds, prior to extraction. The traditional methods ofphysical and chemical extraction are effective but may affect the structure,quality and yield of the phytochemicals extracted. In the current study,hence, enzymes specific for action on the cell wall have been used in the pretreatment prior to extraction, to enhance the quality and yield of the phytochemicalsextracted. The results indicated that all the enzymes, gave morethan 50% higher yield than control in terms of weight of extracted essentialoil. A mixture of the enzymes gave the highest yield of 17.82%. Gas chromatographyresults indicated that the essential oil extracted using amylase hada maximum eugenol content of 70%, in comparison with the eugenol content(62–68%) in the essential oils extracted using the rest of the enzymes.Antibacterial activity of all the extracts was studied on methicillin â€resistantStaphylococcus aureus  (MRSA). The essential oil extracted by using amylaseinhibitedMRSA, showed a zone size of 40 mm, whereas the essential oil extractedby using lignocellulase showed a zone size of 45 mm. The gas chromatogramindicated the maximum number of peaks in this extract, whichcould be producing a combined antibacterial effect on the organism. Thespecific gravity values of the essential oil extracted using lignocellulase andamylase was 1.051 and 1.062, respectively, whereas the control had a specificgravity of 1.015.

scholarly journals Chemical composition and content of essential oil from the bud of cultivated Turkish clove (Syzygium aromaticum L.)

BioResources ◽  
2007 ◽  
Vol 2 (2) ◽  
pp. 265-269 ◽  
Author(s):  
M. Hakki Alma ◽  
Murat Ertaş ◽  
Siegfrie Nitz ◽  
Hubert Kollmannsberger
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Mediterranean Region ◽  
Steam Distillation ◽  
Syzygium Aromaticum ◽  
Distillation Method ◽  
Eugenyl Acetate ◽  
Clove Bud Oil ◽  
Oil Company

In this study, clove bud oil, which was cultivated in the Mediterranean region of Turkey, was provided from a private essential oil company in Turkey. Essential oil from clove (Syzygium aromaticum L.) was obtained from steam-distillation method, and its chemical composition was analyzed by GC and GC-MS. The results showed that the essential oils mainly contained about 87.00% eugenol, 8.01% eugenyl acetate and 3.56% β-Caryophyllene. The chemical composition of the Turkish clove bud oil was comparable to those of trees naturally grown in their native regions.

scholarly journals Essential Oil Composition ofPinus peuceGriseb. Needles and Twigs from Two National Parks of Kosovo

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Avni Hajdari ◽  
Behxhet Mustafa ◽  
Dashnor Nebija ◽  
Hyrmete Selimi ◽  
Zeqir Veselaj ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
National Park ◽  
Essential Oil Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Oil Composition ◽  
Plant Materials ◽  
Geographical Variations

The principal aim of this study was to analyze the chemical composition and qualitative and quantitative variability of essential oils obtained from seven naturally grown populations of thePinus peuceGrisebach, Pinaceae in Kosovo. Plant materials were collected from three populations in the Sharri National Park and from four other populations in the Bjeshkët e Nemuna National Park, in Kosovo. Essential oils were obtained by steam distillation and analyzed by GC-FID (Gas Chromatography-Flame Ionization Detection) and GC-MS (Gas Chromatography-Mass Spectrometry). The results showed that the yield of essential oils (v/wdry weight) varied depending on the origin of population and the plant organs and ranged from 0.7 to 3.3%. In total, 51 compounds were identified. The main compounds wereα-pinene (needles: 21.6–34.9%; twigs: 11.0–24%),β-phellandrene (needles: 4.1–27.7; twigs: 29.0–49.8%), andβ-pinene (needles: 10.0–16.1; twigs: 6.9–20.7%). HCA (Hierarchical Cluster Analysis) and PCA (Principal Component Analyses) were used to assess geographical variations in essential oil composition. Statistical analysis showed that the analyzed populations are grouped in three main clusters which seem to reflect microclimatic conditions on the chemical composition of the essential oils.

scholarly journals The Effect of Essential Oil Formulations for Potato Sprout Suppression

2010 ◽  
Vol 5 (4) ◽  
pp. 1934578X1000500
Author(s):  
Moses S. Owolabi ◽  
Labunmi Lajide ◽  
Matthew O. Oladimeji ◽  
William N. Setzer
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Environmentally Benign ◽  
Plant Materials ◽  
Potato Sprout ◽  
Sprout Suppression ◽  
Essential Oil Formulations ◽  
Triton X ◽  
Sprout Growth ◽  
Sprout Suppressants

The concerns over safety and environmental impact of synthetic pesticides such as chlorpropham (CIPC) has stimulated interest in finding environmentally benign, natural sprout suppressants, including essential oils. The effects of Chenopodium ambrosioides and Lippia multiflora essential oils on sprout growth and decay of stored potatoes has been investigated. Formulations of essential oils with alumina, bentonite, or kaolin, both with and without Triton X-100 additive, were tested. These formulations have been compared to the pulverized plant materials themselves as well as wick-volatilized essential oils. The results showed that the tested oils possess compositions that make them suitable for application as sprout suppressants. Additionally, the formulation seems to be able to reduce the volatility of the essential oil and artificially extend dormancy of stored potatoes.

scholarly journals Comparaison Quantitative Et Qualitative Des Huiles Essentielles De Rosmarinus Officinalis Obtenues Par Différentes Méthodes

2017 ◽  
Vol 13 (21) ◽  
pp. 172
Author(s):  
Taha EL Kamli ◽  
Faouzi Errachidi ◽  
Noureddine Eloutassi ◽  
Houmane Majid ◽  
Rachida Chabir ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Physicochemical Characterization ◽  
Rotatory Power ◽  
Extraction Methods ◽  
Rosmarinus Officinalis ◽  
Raw Material ◽  
Medicinal And Aromatic Plants ◽  
Middle Atlas

Rosmarinus officinalis is among the most abundant medicinal and aromatic plants in Morocco. There are several factors that influence the yield of quality and quantity of essential oils of this plant. This work focuses on the study, characterization and comparison of the chemical composition of essential oils of Rosmarinus officinalis. The raw material studied is originally from the central part of northern Morocco (Skoura M'Daz region, Eastern Middle Atlas). The essential oils of rosemary were obtained by three different extraction methods : DA: Artisanal distillation, the essential oils were obtained directly from small cooperatives using a very traditional (nonindustrial) method and based on the technique of Steam distillation ; DI: Industrial distillation which is also based on Steam distillation; DC: hydrodistillation by clevenger apparatus Laboratory. The physicochemical characterization of essential oils focuses on the search for the yield of % essential oil with regard to the dry rosemary biomass, density, refractive index and rotatory power. The chemical analyzes were carried out by gas chromatography (GC), they identified 11 components representing more than 99.64% of the essential oil and indicate that the chemotype is 1.8 cineole and is varied according to the method (DI: 48.83%, DA: 41.28% and DC: 51.77%). In conclusion we have shown a quantitative and qualitative loss of essential oils due to the extraction method of essential oils, which has direct repercussions on the economy of rural Morocco and consequently on their sustainable development.

scholarly journals Composition of essential oil of plants some species of the genus Agastache l. Introduced in Belarus

2019 ◽  
Vol 64 (2) ◽  
pp. 147-155
Author(s):  
N. A. Kovalenko ◽  
G. N. Supichenko ◽  
V. N. Leontiev ◽  
A. G. Shutova
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Steam Distillation ◽  
Quantitative Composition ◽  
Gas Liquid Chromatography ◽  
Distillation Method ◽  
Methyl Chavicol ◽  
Oil Distribution ◽  
Main Component ◽  
Optically Pure

The steam distillation method was used to obtain samples of essential oil of some species of genus Agastache L. introduced in Belarus. More than 20 components have been identified and determined in the essential oils of Agastache pallidiflora ssp.neomexicana L., Agastache aurantiaca L., Agastache mexicana L., Agastache foeniculum L. by gas liquid chromatography.The quantitative composition of the samples of essential oils depends on the type of plant material. The main its components are limonene, 1.8-cineol, mentone, isomentone, methyl chavicol, methyeugenol. The main component of essential oils Agastache pallidiflora ssp. neomexicana L. и Agastache aurantiaca L is mentone (40–65 %). Essential oil Agastache foeniculum L. is enriched with pulegone and isomentone. Methyl chavicol and methyleugenol dominate in Agastache mexicana essential oil. Distribution of the enantiomers of limonene, menthone and pulegone are shown. Regardless of the plant species, the samples are optically pure in the (+)-pulegone. The nature of the distribution of the enantiomers of limonene and menthone is an individual characteristic of the studied Agastache L. essential oils.

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