scholarly journals Changes in Essential Oil Content and Composition of Salvia Limbata C.A. Mey at Different Growth Stages and Altitudes

2020 ◽  
Author(s):  
Maryam Saffariha ◽  
Hossein Azarnivand ◽  
Mohammad Ali Zare Chahouki ◽  
Ali Tavili ◽  
Samad Nejad Ebrahimi ◽  
...  
Keyword(s):  
Essential Oil ◽  
Growth Stage ◽  
Volatile Oil ◽  
Growth Stages ◽  
Harvest Time ◽  
Total Volatile ◽  
Oil Composition ◽  
Optimal Harvest ◽  
Germacrene D ◽  
Different Growth Stages

Abstract BackgroundThe present study investigates the effect of growth stage (vegetative, flowering and seed ripening) and altitude (1500, 2000 and 2500 m above sea level) on the content and chemical composition of S. limbata essential oil which belongs to Lamiaceae family.ResultsAccording to the oil analysis, 28 components representing 96.5% to 99.7% of the total volatile oil composition were characterized. The main compounds of S. limbata oils were α-pinene (14.7-38.7%), β-pinene (12.5-26.2%), allo-aromadendrene (9.2-21.7%), germacrene D (4.2-8.3%), bicyclogermacrene (6.5-14.5 %), and spathulenol (7.5-25.4 %).DiscussionThe obtained results showed that the content and constituents of S. limbata essential oil strongly depend on the growth stage and altitude. Our findings revealed that the vegetative stage at 1500 m is the optimal harvest time to obtain the highest content of oil yield. Results of the current study helps to find the optimum situation to gain the highest content of S. limbata essential oil but more researches are needed.

Essential Oil Composition of Laurus nobilis L. of Different Growth Stages Growing in Iran

2008 ◽  
Vol 63 (11-12) ◽  
pp. 785-788 ◽  
Author(s):  
Mohammadreza Verdian-rizi ◽  
Abbas Hadjiakhoondi
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Methyl Eugenol ◽  
Growth Stages ◽  
Oil Composition ◽  
Laurus Nobilis ◽  
Aerial Parts ◽  
Acetate Methyl ◽  
Full Flowering ◽  
Different Growth Stages

Abstract The chemical variations of the essential oil from the aerial parts of Laurus nobilis L. (Lauraceae) have been studied. Plant material has been harvested at each phenological status (vegetative, before anthesis, full flowering and seed-bearing). The oils were obtained by hydrodistillation of the air-dried samples. Analysis by GC and GC-MS of the essential oils has allowed to identify 39 compounds. The main compounds were 1,8-cineole, trans-sabinene hydrate, α-terpinyl acetate, methyl eugenol, sabinene, eugenol and α-pinene.

Volatile Oil Composition and Antiplatelet Activity of JordanianAchillea biebersteiniiCollected at Different Growth Stages

2014 ◽  
Vol 17 (4) ◽  
pp. 584-598 ◽  
Author(s):  
Hala I. Al-Jaber ◽  
Hana M. Hammad ◽  
Mahmoud A. Al-Qudah ◽  
Ismail F. Abaza ◽  
Jehan Y. G. Al-humaidi ◽  
...  
Keyword(s):  
Volatile Oil ◽  
Growth Stages ◽  
Antiplatelet Activity ◽  
Oil Composition ◽  
Different Growth Stages

scholarly journals  New menthone type of Mentha pulegium L. volatile oil from northwest Iran

2011 ◽  
Vol 29 (No. 3) ◽  
pp. 285-290 ◽  
Author(s):  
M.B. Hassanpouraghdam ◽  
A.B. Akhgari ◽  
M.A. Aazami ◽  
J. Emarat-Pardaz
Keyword(s):  
Essential Oil ◽  
Volatile Oil ◽  
Oil Composition ◽  
Mentha Pulegium ◽  
Food Industries ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Main Class ◽  
Northwest Iran ◽  
A Minor

The constituents of the volatile oil of air-dried aerial parts of Mentha pulegium L. (Lamiaceae) plants wildly growing in Northwest Iran were analysed by GC/MS. 46 components were identified, comprising 96.6% of the essential oil. Monoterpenes (78.9%) were the main class of the identified components followed by a minor proportion of sesqui-<br />terpenes (11%). Oxygenated monoterpenes (75.3%) were the major subclass of volatile oil components with menthone (38.7%), menthol (11.3%), neomenthol (10.5%), and pulegone (6.8%) as major compounds. Sesquiterpene hydrocarbons (10.6%) were the highlighted subclass of 15 carbons sesquiterpenoidal compounds with (E)-caryophyllene (4.9%) and &beta;-cubebene (2.5%) as their principle representatives. Furthermore, menthyl acetate (C<sub>12</sub> acetylated monoterpene derived compound) was contained considerable amounts (5.2%) in the essential oil. In total, volatile oil composition of M. pulegium L. plants studied in the present experiment was characterised as a new menthone type with appreciable amounts of menthol and neomenthol, and it could be used as a potential source of these high value monoterpenes in pharmaceutical and food industries.

Variations in Essential Oil Constituents at Different Growth Stages ofRuta chalepensison Cultivation at North Indian Plains

2003 ◽  
Vol 15 (4) ◽  
pp. 263-264 ◽  
Author(s):  
G. D. Bagchi ◽  
P. D. Dwivedi ◽  
Amrita Singh ◽  
Flora Haider ◽  
A. A. Naqvi
Keyword(s):  
Essential Oil ◽  
Growth Stages ◽  
Different Growth Stages

scholarly journals Evaluation of Rice Responses to the Blast Fungus Magnaporthe oryzae at Different Growth Stages

Plant Disease ◽  
2019 ◽  
Vol 103 (1) ◽  
pp. 132-136 ◽  
Author(s):  
Xinglong Chen ◽  
Yulin Jia ◽  
Bo Ming Wu
Keyword(s):  
Disease Severity ◽  
Magnaporthe Oryzae ◽  
Rice Blast ◽  
Growth Stage ◽  
Disease Index ◽  
Blast Disease ◽  
Growth Stages ◽  
Japonica Rice ◽  
Rice Cultivars ◽  
Different Growth Stages

Rice blast, caused by the fungus Magnaporthe oryzae, is the most damaging disease for rice worldwide. However, the reactions of rice to M. oryzae at different growth stages are largely unknown. In the present study, two temperate japonica rice cultivars, M-202 and Nipponbare, were inoculated synchronously at different vegetative growth stages, V1 to V10. Plants of M-202 at each stage from V1 to reproductive stage R8 were inoculated with M. oryzae race (isolate) IB-49 (ZN61) under controlled conditions. Disease reactions were recorded 7 days postinoculation by measuring the percentage of diseased area of all leaves, excluding the youngest leaf. The results showed that the plants were significantly susceptible at the V1 to V4 stages with a disease severity of 26.7 to 46.8% and disease index of 18.62 to 37.76 for M-202. At the V1 to V2 stages, the plants were significantly susceptible with a disease a severity of 28.6 to 39.3% and disease index of 23.65 to 29.82 for Nipponbare. Similar results were observed when plants of M-202 were inoculated at each growth stage with a disease severity of 29.7 to 60.6% and disease index of 21.93 to 59.25 from V1 to V4. Susceptibility decreased after the V5 stage (severity 4.6% and index 2.17) and became completely resistant at the V9 to V10 stages and after the reproductive stages, suggesting that plants have enhanced disease resistance at later growth stages. These findings are useful for managing rice blast disease in commercial rice production worldwide.

scholarly journals Leaf Essential Oil Composition of Five Species of Beilschmiedia from Monteverde, Costa Rica

2007 ◽  
Vol 2 (1) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
William N. Setzer ◽  
William A. Haber
Keyword(s):  
Costa Rica ◽  
Essential Oil ◽  
Carbonyl Compounds ◽  
Essential Oil Composition ◽  
Chemical Compositions ◽  
Oil Composition ◽  
Germacrene D ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Cis And Trans

The leaf essential oils of five species of Beilschmiedia from Monteverde, Costa Rica (Beilschmiedia alloiophylla, B. brenesii, B. costaricensis, B. tilaranensis, and an undescribed Beilschmiedia species “chancho blanco”) have been obtained by hydrodistillation and analyzed by GC-MS in order to discern the differences and similarities between the volatile chemical compositions of these species. The principal constituents of B. alloiophylla leaf oil were germacrene D (18.9%), cis- and trans-β-ocimene (18.8% and 9.3%, respectively), α-pinene (11.8%), and bicyclogermacrene (9.1%). The leaf oil of B. brenesii was composed largely of the sesquiterpenes germacrene D (19.3%), β-caryophyllene (13.4%), α-copaene (9.0%), α-humulene (8.1%), and δ-cadinene (5.8%), and the carbonyl compounds 2-undecanone (12.8%), trans-2-hexenal (8.8%), and 2-tridecanone (3.8%). α-Bisabolol (72.1%) dominated the leaf oil of B. costaricensis, while B. tilaranensis had germacrene D (54.9%), β-caryophyllene (14.8%), and δ-cadinene (5.1%) as major components. Beilschmiedia “chancho blanco” leaf oil was composed largely of β-caryophyllene (16.6%), bicyclogermacrene (14.1%), and α-pinene (12.1%).

scholarly journals Changes in essential oil compositions, total phenol, flavonoids and antioxidant capacity of Achillea millefolium at different growth stages

2020 ◽  
Vol 152 ◽  
pp. 112570 ◽  
Author(s):  
Nasrin Farhadi ◽  
Khyrollah Babaei ◽  
Sara Farsaraei ◽  
Mohammad Moghaddam ◽  
Abdollah Ghasemi Pirbalouti
Keyword(s):  
Essential Oil ◽  
Antioxidant Capacity ◽  
Total Phenol ◽  
Achillea Millefolium ◽  
Growth Stages ◽  
Different Growth Stages

scholarly journals Essential Oil Composition of the Different Parts of Eryngium aquifolium from Spain

2010 ◽  
Vol 5 (5) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Jesús Palá-Paúl ◽  
Jaime Usano-Alemany ◽  
Joseph J. Brophy ◽  
María J. Pérez-Alonso ◽  
Ana-Cristina Soria
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Steam Distillation ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Volatile Composition ◽  
Percentage Composition ◽  
Plant Parts ◽  
Germacrene D ◽  
Different Parts

The essential oils from the different parts [inflorescences (E.a.I), stems + leaves (E.a.SL) and roots (E.a.R)] of E. aquifolium Cav. gathered in Cádiz (Spain), have been extracted by steam distillation and analyzed by gas chromatography and gas chromatography coupled to mass spectrometry. Quantitative and qualitative differences have been found between the analyzed plant parts. A total of 107 compounds have been identified. The main constituents were germacrene D (30.3%) and sesquicineole (26.7%) for E.a.I fraction, germacrene D (46.0%) and myrcene (13.8%) in the E.a.SL, while E.a.R showed phyllocladene isomer (63.6%) as a unique major compound. The percentage composition of the other constituents was lower than 5.5% in all the analyzed fractions. In agreement with other Eryngium species, no specific compound could be used as a marker for the chemotaxonomy of E. aquifolium. However, similarities in volatile composition were found between E. aquifolium and other species growing under similar environmental conditions. As far as we know, this is the first report on the essential oil of this species.

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