scholarly journals The effect of the desiccants treatment on the fennel quality (Foeniculum vulgare var. vulgare Mill.)

2005 ◽  
Vol 53 (5) ◽  
pp. 143-150
Author(s):  
Gabriela Růžičková ◽  
Blanka Kocourková ◽  
Jitka Sedláková ◽  
Jana Hajšlová
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Quality Criteria ◽  
Essential Oil Composition ◽  
Perennial Herb ◽  
Microbiological Contamination ◽  
Oil Composition ◽  
Foeniculum Vulgare ◽  
Cultivation Technology ◽  
Essential Oil Yield

Fennel (Foeniculum vulgare var. vulgare Mill.) is an perennial herb, it is cultivated for the essential oil in the fruits. The quality criteria are essential oil content, microbiological contamination and residua of pesticides. The important part of the cultivation technology is ununiform maturity of the fruits. The aim of this work was to find out the influence of the desiccants on quality and yield characteristics of fennel fruits produced in field conditions in the first years of growing. Three preparations were applied: glufosinate-NH4, 150 g.l–1 (2 l.ha–1), diquat dibromide, 200 g.l–1 (3 l.ha–1) and glyphosate-IPA, 480 g.l–1 (3 l.ha–1) in three repetitions. The non treated control variant was also repetited three times. The samples were analysed for quantitative and qualitative parameters: the fruit yield (t.ha–1), the essential oil content (%, V/m), the essential oil yield (kg.ha–1), the essential oil composition and the residua content.

Comparative essential oil composition of fennel (Foeniculum vulgare Mill.) fruits collected during different three years

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
AC Aprotosoaie ◽  
V Floria ◽  
A Spac ◽  
A Miron ◽  
M Hancianu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Foeniculum Vulgare

scholarly journals Changes in the essential oil composition of Majorana hortensis Moench. cultivated in India during plant ontogeny

2010 ◽  
Vol 75 (4) ◽  
pp. 441-447 ◽  
Author(s):  
Ram Verma ◽  
Rajesh Verma ◽  
Amit Chauhan ◽  
Ajai Yadav
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Western Himalaya ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Plant Ontogeny ◽  
Different Ages

The essential oil content and composition of 'sweet marjoram? (Majorana hortensis Moench) cultivated in the Kumaon region of the western Himalaya was studied at different ages of the crop. The samples were taken after 60, 90, 120 and 150 days of transplanting. The essential oil contents varied from 0.20 % to 0.70 %. The essential oil was analyzed by GC and GC-MS. Twenty eight components, representing 96.53% - 98.44% of the oil, were identified. The major essential oil constituents, viz., (Z)-sabinene hydrate (37.05% - 47.49%), terpinen-4-ol (14.45% - 16.22%) and (E)-sabinene hydrate (5.81% - 6.97 %) showed considerable variation in their concentrations in relation to crop age.

scholarly journals Essential Oil Composition of Helichrysum conglobatum from Cyprus

2016 ◽  
Vol 11 (10) ◽  
pp. 1934578X1601101
Author(s):  
Kaan Polatoğlua ◽  
Betül Demirci ◽  
İhsan Çalιş ◽  
Kemal Hüsnü Can Başer
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Yield ◽  
Hexadecanoic Acid ◽  
Oil Composition ◽  
Tetradecanoic Acid ◽  
First Report ◽  
Aerial Parts ◽  
Main Components ◽  
Essential Oil Yield

The essential oil of aerial parts of Helichrysum conglobatum (Viv.) Steudel. (Asteraceae) from Cyprus was analyzed by GC and GC-MS. The essential oil yield was 0.01, v/w. Forty five compounds were identified in the oil comprising 96.1% of the total. The essential oil was mainly composed of sesquiterpene type compounds and oxygenated sesquiterpene derivatives. The main components of the oil were β-caryophyllene (14.6%), γ-curcumene (14.1%), hexadecanoic acid (13.5%), tetradecanoic acid (7.5%), rosifoliol (5.4%) and δ-cadinene (5.3%). This is the first report on the essential oil composition of H. conglobatum from Cyprus.

Effect of elevation and phenological stages on essential oil composition of Stachys

2017 ◽  
Vol 42 (6) ◽  
Author(s):  
Masomeh Alimohammadi ◽  
Mehrab Yadegari ◽  
Hamze Ali Shirmardi
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Flowering Stage ◽  
Natural Habitats ◽  
Phenological Stages ◽  
Methyl Chavicol ◽  
Full Flowering ◽  
Germacrene D

AbstractObjective:Determine the best elevation and phenological stages effects on essential oil content and composition inMaterials and methods:Three phenological stages (vegetative, full flowering and seeding) and three elevation ranges (2500–2700, 2700–2900 and over 2900 m), shoots of plants collected from Kallar mountain as natural habitats from Chaharmahal and Bakhtiari Province. Composition of essential oil detected by GC/MS.Results:The maximum amount of secondary metabolites of β-ocimene, methyl chavicol, germacrene-D, 1,8 cineole and phthalate had measured in vegetative stage and various of elevation ranges. The most essential oil content (0.145%) was obtained in 2700–2900 m and full flowering stage. The most components in full flowering were β-eudesmol, menthol and γ-eudesmol. The most of germacrene-D, levomenol, β-thujene, β-caryophyllene, β-sesquiphellandrene, α-eudesmol and delta-cadinene was achieved in seeding stage.Conclusion:Elevation and phenological stages had significant effect on essential oil of

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 Essential Oil Composition and Yield of Anise from Different Distillation Times

HortScience ◽  
2013 ◽  
Vol 48 (11) ◽  
pp. 1393-1396 ◽  
Author(s):  
Valtcho D. Zheljazkov ◽  
Tess Astatkie ◽  
Barry O'Brocki ◽  
Ekaterina Jeliazkova
Keyword(s):  
Essential Oil ◽  
Steam Distillation ◽  
Essential Oil Composition ◽  
Oil Yield ◽  
Optimal Time ◽  
Oil Composition ◽  
History Of ◽  
History Of Use ◽  
Total Oil ◽  
Essential Oil Yield

Anise (Pimpinella anisum L.) is a spice, an essential oil crop, and a medicinal plant with a long history of use. Anise seed oil is extracted from anise seed through steam distillation. There is no experimentally established optimal time for distillation of anise seed. We hypothesized that the distillation time (DT) can be customized for optimum yield and composition of anise essential oil. In this study, we determined the effect of nine steam DTs (5, 15, 30, 60, 120, 180, 240, 360, and 480 minutes) on essential oil yield and essential oil composition of anise seed. We developed regression models to predict essential oil yield, the concentration of individual constituents, and the yield of these constituents as a function of DT. Highest essential oil yield (2.0 g/100 g seed, 2%) was obtained at 360-minute DT. The concentration of transanethole, the major anise oil constituent, varied from 93.5% to 96.2% (as a percent of the total oil) and generally was high at 15- to 60-minute DT and low at 240- to 480-minute DT. However, the yield of transanethole (calculated from the essential oil yield and the concentration of transanethole in the oil) increased with increasing DT to reach maximum at 360-minute DT. The concentration of the other oil constituents varied significantly depending on the DT, and some of them were higher at the shorter DT than at the longer DT. However, the yields of these constituents were highest at longer DT (either 360 or 480 minutes). DT can be used to obtain anise essential oil with different composition that would benefit the essential oil industry. This study demonstrated the need for providing DT in reports where anise seed essential oil yield and composition are discussed. This article can also be used as a reference point for comparing studies in which different DTs were used to extract essential oil from anise seed.

scholarly journals Does co-inoculation of mycorrhiza and Piriformospora indica fungi enhance the efficiency of chlorophyll fluorescence and essential oil composition in peppermint under irrigation with saline water from the Caspian Sea?

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254076
Author(s):  
Masoumeh Khalvandi ◽  
Mohammadreza Amerian ◽  
Hematollah Pirdashti ◽  
Sara Keramati
Keyword(s):  
Chlorophyll Fluorescence ◽  
Essential Oil ◽  
Endophytic Fungi ◽  
Oil Content ◽  
Saline Water ◽  
Essential Oil Composition ◽  
Piriformospora Indica ◽  
Interactive Effects ◽  
Oil Composition ◽  
Medicinal And Aromatic Plants

Symbiotic associations with endophytic fungi are ecologically important for medicinal and aromatic plants. Endophytic fungi highly affect the quantity and quality of herbal products. In this study, a pot experiment was carried out in the greenhouse to investigate the interactive effects of Piriformospora indica and arbuscular mycorrhizal (AMF) inoculation on the chlorophyll fluorescence, essential oil composition, and antioxidant enzymes of peppermint under saline condition. The results showed that Fo, YNPQ, YNO, and NPQ values were obviously increased under salinity conditions, while essential oil content, chlorophyll a and b, gs, Fm, Fv, ETR, ФPSII and Fv/Fm ratio decreased by increasing salinity. In addition, salt induced the excess Na+ uptake, whereas the opposite trend was observed for P and K+. The synergistic association of P. indica and AMF caused a considerable increase in the antioxidant ability, essential oil content, Fv/Fm ratio, ФPSII, and amount of P and K+ uptake in salt-stressed plants. The main peppermint oil constituents, menthol, menthone, and 1,8-cineole increased considerably in inoculated plants. Besides, the applied endophytic fungi positively enhanced the ability of peppermint to alleviate the negative effect of the salinity stress.

scholarly journals Essential Oil Content, Composition and Bioactivity of Juniper Species in Wyoming, United States

2017 ◽  
Vol 12 (2) ◽  
pp. 1934578X1701200 ◽  
Author(s):  
Valtcho D. Zheljazkov ◽  
Tess Astatkie ◽  
Ekaterina A. Jeliazkova ◽  
Bonnie Heidel ◽  
Lyn Ciampa
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Steam Distillation ◽  
Rocky Mountain ◽  
Industrial Applications ◽  
Essential Oil Composition ◽  
Chemical Profile ◽  
Oil Composition ◽  
Leaf Essential Oil ◽  
Common Juniper

The objective of this study was to evaluate variations in leaf essential oil (EO) content and composition of Juniperus species in the Bighorn Mountains { J. communis L. (common juniper), J. horizontalis Moench. (creeping juniper), and J. scopulorum Sarg. (Rocky Mountain juniper)} in Wyoming, USA. The EO was extracted via steam distillation of fresh leaves (needles). The EO composition of the three Juniper species varied widely. Overall, the essential oil content of fresh leaves was 1.0% (0.4–1.8% range in different accessions) in J. communis, 1.3% (1.2 to 1.6% range) in J. horizontalis, and 1.1% (0.7–1.5% range) in J. scopulorum. The EO chemical profile of J. communis was very different from that of the other two species. The concentration of α-pinene in the oil was 67–80% in J. communis, 2.8–6% in J. horizontalis, and 2.3–13% in J. scopulorum. The concentration of sabinene was 57–61% of the oil of J. horizontalis and 13–59% in oil of J. scopulorum, whereas sabinene was either below 1% or not detected in J. communis. The oils of J. scopulorum and J. horizontalis had higher antioxidant capacity than that of J. communis. The oils of the three junipers did not show significant antimicrobial activity against 10 organisms. The diversity of the essential oil composition of these three junipers may encourage diverse industrial applications of Juniperus leaf essential oil.

scholarly journals Rose-scented Geranium (Pelargonium spp.) Plant Growth, and Essential Oil Yield and Composition as Affected by Paclobutrazol Application

HortScience ◽  
2017 ◽  
Vol 52 (7) ◽  
pp. 991-995 ◽  
Author(s):  
Bahlebi K. Eiasu ◽  
Ntombekhaya Matafeni ◽  
Viwe Dyafta ◽  
Kenias Chigwaya
Keyword(s):  
Essential Oil ◽  
Block Design ◽  
Essential Oil Composition ◽  
Oil Yield ◽  
Oil Composition ◽  
Energy Consuming ◽  
University Of Fort Hare ◽  
The University ◽  
Time And Energy ◽  
Essential Oil Yield

Rose-scented geranium oil is extracted from the shoots (mostly the leaves) of the Pelargonium spp. through steam- or hydro-distillation. To extract less than 0.2% oil, farmers must transport and distil bulky herbage. This makes geranium oil production costly, and high time- and energy-consuming process. To investigate the effect of different paclobutrazol (PBZ) concentrations (0, 100, 200, 300 mg/L of water) on vegetative growth, and oil yield and composition of rose-scented geranium, three pot experiments were conducted. The experiments were conducted in a glasshouse of the University of Fort Hare, Alice, South Africa (located at 25°45′S and 28°16′E, an altitude of 520 m above sea level), between Oct. 2011 and May 2013. The treatments were arranged in a randomized complete block design (RCBD) in four replications. The PBZ was sprayed on the plants at 1 month of regrowth stage. Chlorophyll content increased with concentration of PBZ. The reduction of plant height in all PBZ-treated plants was significant, ranged between 18% and 33%. Plant canopy also reduced by 5% to 23%, and the differences were more noticeable in the plants grown between January and May (summer/autumn season), producing compact plants. Leaf area and internode length reduced as PBZ concentration increased. Paclobutrazol had no significant effect on leaf number, and essential oil yield and composition. This implies that, through applying PBZ, compacted (less bulky) rose-scented geranium could be produced without significant change in essential oil yield per plant and essential oil composition.

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