scholarly journals Composition of essential oil and allelopathic activity of aromatic water of Aster lanceolatus Willd: (Asteraceae)

2009 ◽  
Vol 45 (3) ◽  
pp. 469-474 ◽  
Author(s):  
Josiane de Fátima Gaspari Dias ◽  
Obdúlio Gomes Miguel ◽  
Marilis Dallarmi Miguel
Keyword(s):  
Essential Oil ◽  
Lactuca Sativa ◽  
Extraction Process ◽  
Caryophyllene Oxide ◽  
Allelopathic Activity ◽  
Germination And Growth

The essential oil obtained from flowers of Aster lanceolatus was submitted the CG-MS and presented as result thirteen substances with largest concentration; among them, the caryophyllene oxide with the larger one. The aromatic water obtained during the extraction process of this essential oil was forwarded to allelopathic test, and demonstrated to be capable to inhibit the germination and growth of Lactuca sativa.

scholarly journals ESTUDO ALELOPÁTICO APLICADO DE ASTER LANCEOLATUS, WILLD.

2005 ◽  
Vol 6 (1) ◽  
Author(s):  
Joseane F. G. Dias ◽  
Marilis Dallarmi Miguel
Keyword(s):  
Essential Oil ◽  
Lactuca Sativa ◽  
Inhibitory Influence ◽  
Caryophyllene Oxide ◽  
Aerial Parts ◽  
Applied Study ◽  
Hexahydrofarnesyl Acetone ◽  
Pure Compounds ◽  
Stems And Leaves ◽  
Asteraceae Family

O presente trabalho realizou estudo sobre Aster lanceolatus, Willd., pertencente a família Asteraceae, cujas partes aéreas foram divididas em duas porções. A primeira, composta de flores e a segunda, de caules e folhas. Da análise de CG nas frações hexano, verificou-se presença de β-sitosterol. Utilizando-se resultados obtidos com o estudo alelopático dos extratos etanólicos e frações, realizaram-se estudos fitoquímicos com o intuito de isolar compostos com provável atividade alelopática e testá-los com técnica desenvolvida denominada alelopatografia. Verificou-se a presença de espinasterol e canferol-rhamnosil-galactosídeo que ao serem submetidos a alelopatografia apresentaram influência alelopática inibitória da germinação e formação de folíolos. Da análise de CG/EM realizada com o óleo essencial, identificou-se treze constituintes: Mirtenol; α-Muroleno; 1,2-dihidro-1,1,6-trimetil Naftaleno; Bisaboleno; β-Lanona; Espatulenol; Oxido de Cariofileno; 3-Ciclohexeno-1-carboxaldeído; 3,4, Cedren-13-ol, 8; Neocloveno-(I) dihidro; Azuleno 1-4-dimetil-7-(1-metila); 2H-Benzociclohepteno-2-ona, 1,4a,5,6,7,8,9,9a-octahidro 4a metil trans e 1, hexahidrofarnesil acetona. A água aromática quando submetida a ensaio alelopático apresentou atividade alelopática inibitória da germinação e do crescimento de hipocótilo de Lactuca sativa, provavelmente devido aos constituintes do óleo essencial. De acordo com análise comparativa dos ensaios alelopáticos, pode-se referir que a influência alelopática é mais intensa ao utilizar-se fração inteira em comparação aos compostos isolados, e que a alelopatografia pode representar um método mais rápido e de fácil visualização de influência alelopática de constituintes impuros. Até este momento, não havia relatos da presença dos constituintes químicos relatados neste trabalho em Aster lanceolatus. Palavras chave: alelopatografia, alelopatia, fitoquímica, atividade antifúngica e antibacteriana. Allelophatic Applied Study from Aster lanceolatus, Willd Abstract The present work accomplished study about Aster lanceolatus, Willd., belonging the Asteraceae family, whose aerial parts were shared in two portions. The first one was composed of flowers and the second one of stems and leaves. Trough the analysis of CG accomplished in the hexan fractions, a presence of β-sitosterol has been verified. Using the results obtained with the allelophatic study of the ethanolics extracts and fractions, it has taken place the phytochemistries studies with the intention of to isolate composed with probable allelophatic activity and to test with a developed technique called allelophatography. It has been verified a presence of spinasterol and kaempferol-rhamnosyl-galactoside, which presented inhibitory influence of the germination and leaves formation when the allelopatography has been submitted. Through the analysis of CG/MS accomplished with the essential oil, thirteen compounds has been verified: myrtenol; α-muurolene; naphthalene, 1,2 dihydro-1,1,6-trimethyl; bisabolene; β-lanona; spathulenol; caryophyllene oxide; 3-cyclohexen-1-carboxaldehyde, 3, 4; cedren-13-ol, 8; neoclovene-(I), dihydro; azulene, 1,4-dimethyl-7-(1-methyle); 2H-benzocyclohepten-2-one, 1, 4a, 5, 6, 7, 8, 9, 9a-octahydro 4a, methyl, trans; 1, hexahydrofarnesyl acetone. The aromatic water when submitted in the allelophatic study showed inhibitory allelophatic activity from the germination and the growth of hypocotyl of Lactuca sativa, probably because the essential oil fractions. In agreement with comparative analysis of the allelophatics rehearsals, it can refer the allelophatic influence is more intense when using complete fraction in comparison with the isolated compounds, and the allelophatography can represent a faster and easier method of visualization from the allelophatic influence of non-pure compounds. From now there have been no reports about the presence of chemistry compounds reported in this work in Aster lanceolatus. Key words: allelophatography, allelophaty, phytochemistry, antifungal and antibacterial activity.

scholarly journals Chemical Composition and Allelopathic Activity of the Essential Oil from <i>Callistemon viminalis</i> (Myrtaceae) Blossoms on Lettuce (<i>Lactuca sativa</i> L.) Seedlings

2014 ◽  
Vol 05 (24) ◽  
pp. 3551-3557 ◽  
Author(s):  
Christiane Maria de Oliveira ◽  
Maria das Graças Cardoso ◽  
Ana Cristina da Silva Figueiredo ◽  
Maria Laene Moreira de Carvalho ◽  
Cíntia Alvarenga Santos Fraga de Miranda ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Lactuca Sativa ◽  
Allelopathic Activity ◽  
Callistemon Viminalis

Effects of Kaurane Diterpene Derivatives on Germination and Growth of Lactuca sativa Seedlings

2005 ◽  
Vol 60 (1-2) ◽  
pp. 72-78 ◽  
Author(s):  
Henriete S. Vieira ◽  
Jacqueline A. Takahashi ◽  
Lúcia P. S. Pimenta ◽  
Maria Amélia D. Boaventura
Keyword(s):  
Gibberellic Acid ◽  
Lactuca Sativa ◽  
Naturally Occurring ◽  
Germination And Growth ◽  
Stimulation Of

Kaurenoic and grandiflorenic acid, isolated from Wedelia paludosa (Asteraceae), some derivatives from these acids (alcohols, esters, amides, lactones, oximes) and other naturally occurring kaurane diterpenes were tested for their action on the growth of radical and shoot of Lactuca sativa. Gibberellic acid, GA3, a commercially available phytohormone, belonging to the same class of diterpenes, was also tested. Some of the tested substances showed a remarkable activity either in the inhibition or in stimulation of L. sativa growth. The activity, in some cases, was even higher than that of GA3.

scholarly journals Essential Oil Constituents of The Rhizomes of Two Types of Curcuma longa of Bangladesh

1970 ◽  
Vol 43 (2) ◽  
pp. 259-266 ◽  
Author(s):  
Jasim Uddin Chowdhury ◽  
Nemai Chandra Nandi ◽  
M Nazrul Islam Bhuiyan ◽  
M Hosnay Mobarok
Keyword(s):  
Essential Oil ◽  
Key Words ◽  
Curcuma Longa ◽  
Caryophyllene Oxide ◽  
Yellow Type

Essential oil from the rhizomes of two types of Curcuma longa, yellow and red originated in Bangladesh was analyzed by GC-MS. 54 compounds have been identified from the yellow type of which the major compounds are ar-tumerone (27.78%), tumerone (17.16%), culone (13.82%), 2-carene (4.78%), zingiberene (4.37%) and β-sesquiphellandrene (5.57%). The red type contained 39 compounds with carvacrol (21.14%), citral (13.91%), methyleugenol (7.31%), geraniol (6.99%), menthol (5.11%) and caryophyllene oxide (4.14%) as major constituents. Key words: Curcuma longa, GC-MS, Ar-tumerone, Carvacrol, Tumerone, Citral. DOI: 10.3329/bjsir.v43i2.970  Bangladesh J. Sci. Ind. Res. 43(2), 259-266, 2008 

scholarly journals Influence of Drying in Hyptis pectinata Essential Oil

2018 ◽  
Vol 10 (4) ◽  
pp. 96
Author(s):  
Núbia Angélica de Ávila Branquinho ◽  
Fabiano Guimarães Silva ◽  
Osvaldo Resende ◽  
Luiz Cláudio Almeida Barbosa ◽  
Daniel Emanuel Cabral de Oliveira ◽  
...  
Keyword(s):  
Essential Oil ◽  
Anhydrous Sodium Sulfate ◽  
Fixed Bed ◽  
Chemical Characterization ◽  
Automated System ◽  
Caryophyllene Oxide ◽  
System A ◽  
Different Temperatures ◽  
Drying Conditions

The present study assessed the effects of drying at different temperatures (35, 45 and 55 °C) and air velocities (1 and 2 m s-1) on the content and chemical characteristics of Hyptis pectinata essential oil. Drying was conducted in a fixed-bed dryer, and the temperatures and air velocities were controlled and recorded by an automated system. A 350±0.12 g quantity of fresh leaves was used for each of the four repetitions in each dryer. From the material obtained after drying, 60 g of each repetition was used to extract essential oil by the hydrodistillation method. Dichloromethane was used as the solvent, and anhydrous sodium sulfate was used as the desiccating agent. Gas chromatography in the forms of GC-MS and GC-FID were used for the chemical characterization of the essential oil compounds. Decreasing drying times and decreasing concentrations of essential oils were observed with increasing temperatures. A GC-MS analysis of the essential oil from H. pectinata leaves led to the identification of 19 compounds. A sesquiterpene called caryophyllene oxide was the most abundant compound under all drying conditions, with the highest concentration at a temperature of 55 °C, ranging from approximately 42 to 53%.

scholarly journals Central Composite Design, Kinetic Model, Thermodynamics, and Chemical Composition of Pomelo (Citrus Maxima (Burm.) Merr.) Essential Oil Extraction by Steam Distillation

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2075
Author(s):  
Tan Phat Dao ◽  
Thanh Viet Nguyen ◽  
Thi Yen Nhi Tran ◽  
Xuan Tien Le ◽  
Ton Nu Thuy An ◽  
...  
Keyword(s):  
Activation Energy ◽  
Kinetic Model ◽  
Essential Oil ◽  
Rate Constant ◽  
Flow Rate ◽  
Steam Distillation ◽  
Extraction Process ◽  
Oil Extraction ◽  
Extraction Time ◽  
Pomelo Peel

Pomelo peel-derived essential oils have been gaining popularity due to greater demand for stress relief therapy or hair care therapy. In this study, we first performed optimization of parameters in the pomelo essential oil extraction process on a pilot scale to gain better insights for application in larger scale production. Then extraction kinetics, activation energy, thermodynamics, and essential oil quality during the extraction process were investigated during the steam distillation process. Three experimental conditions including material mass, steam flow rate, and extraction time were taken into consideration in response surface methodology (RSM) optimization. The optimal conditions were found as follows: sample weight of 422 g for one distillation batch, steam flow rate of 2.16 mL/min and extraction time of 106 min with the coefficient of determination R2 of 0.9812. The nonlinear kinetics demonstrated the compatibility of the kinetic model with simultaneous washing and unhindered diffusion with a washing rate constant of 0.1515 min−1 and a diffusion rate constant of 0.0236 min−1. The activation energy of the washing and diffusion process was 167.43 kJ.mol−1 and 96.25 kJ.mol−1, respectively. The thermodynamic value obtained at the ΔG° value was −35.02 kJ.mol−1. The quality of pomelo peel essential oil obtained by steam distillation was characterized by its high limonene content (96.996%), determined by GC-MS.

Optimization of Extraction Conditions of Essential Oil from Latifolia miq Roots and Stems with Supercritical CO2 Fluid

2013 ◽  
Vol 726-731 ◽  
pp. 4512-4516
Author(s):  
Ren Yong Gu ◽  
Zhi Ping Li
Keyword(s):  
Essential Oil ◽  
Optimum Condition ◽  
Raw Materials ◽  
Extraction Process ◽  
Orthogonal Test ◽  
Single Factor ◽  
Extraction Condition ◽  
Optimum Extraction ◽  
Optimum Extraction Condition

Studying on the extraction process of essential oil from Latifolia Miq roots and stems by Supercritical CO2 extraction. The effects on extracting ratio were investigated by using single factor test, adding content of grinding fineness of raw materials,extracting temperature, extracting pressure and extracting time. The optimum extraction condition was determined by orthogonal test. The results showed that the optimum condition of the extraction was as follows: grinding fineness 90 mesh, extracting temperature 45 °C, extracting pressure 20 MPa and extracting time 2.5 h.

scholarly journals Essential oil composition, phenolic compound, and antioxidant potential of Inulaviscosa as affected by extraction process

2018 ◽  
Vol 21 (1) ◽  
pp. 2309-2319 ◽  
Author(s):  
Jazia Sriti Eljazi ◽  
Sawssen Selmi ◽  
Youkabed Zarroug ◽  
Ibtissem Wesleti ◽  
Bouthaina Aouini ◽  
...  
Keyword(s):  
Essential Oil ◽  
Phenolic Compound ◽  
Extraction Process ◽  
Essential Oil Composition ◽  
Antioxidant Potential ◽  
Oil Composition

scholarly journals Chemical Composition of the Essential Oil of Croton bonplandianus from India

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Caryophyllene Oxide ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Total Oil

The essential oil obtained from the aerial parts of Croton bonplandianus Baill. was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). A total of 37 compounds have been identified, representing 96.2% of the total oil. The main constituents were identified as β-caryophyllene (16.7%), germacrene D (14.7%), borneol (8.3%), Z-β-damascenone (6.(%), isobornyl acetate (6.2%), α-humulene (6.1%), germacrene A (5.2%) and caryophyllene oxide (4.5%). The oil was rich in sesquiterpene hydrocarbons (60.1%).

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