scholarly journals Changes in Volatile Compounds during Aging of Sweet Fennel Fruits-Comparison of Hydrodistillation and Static Headspace Sampling Methods

2016 ◽  
Vol 11 (3) ◽  
pp. 1934578X1601100
Author(s):  
Menče Najdoska-Bogdanov ◽  
Jane B. Bogdanov ◽  
Marina Stefova
Keyword(s):  
Essential Oil ◽  
Comparative Method ◽  
Extraction Methods ◽  
Human Consumption ◽  
Volatile Components ◽  
Static Headspace ◽  
Foeniculum Vulgare ◽  
Fruit Samples ◽  
Main Components

Two extraction methods for subsequent gas chromatographic (GC) determination of volatiles from freshly harvested and aged fennel fruit samples ( Foeniculum vulgare Mill.,ssp. vulgare var. dulce) have been compared. Hydrodistillation followed by GC-FID and GC-MS analysis was used as a standard method for essential oil characterization, while static headspace followed by GC (SHS-GC-FID) was used as a comparative method for determination of volatile components. As the fennel fruit ages, there is a gradual loss of the volatile components as indicated by the lower yield of essential oil and lower content of volatiles, as indicated by the alternative SHS-GC-FID analysis. Slight differences observed for the main components ( trans-anethole, estragole, fenchone, and limonene) using the two methods are negligible, indicating that these volatiles did not undergo chemical transformation during the sample preparation procedures. A difference in anisaldehyde content was observed when the composition of the hydrodistilled essential oil was compared with the SHS-GC-FIDanalysis of volatiles and explanation for the variation of anisaldehyde content and the origin of other compounds was suggested. Comparison of the obtained results showed that limonene oxides, carvone and carveolare detectable in SHS-GC-FID analysis of the aged fennel fruits, while in hydrodistilled samples analyzed by GC-FID they were not present. Another observed difference was the appearance of products in significant amounts with higher retention times than trans-anethole, namely threo- and erythro-anethole β-hydroxymethylether and anethole glycol that are not detectable in the essential oil obtained by hydrodistillation. So, the relative abundance of the major components is comparable between these two methods for fennel seed up to 3 years from harvest and they can be used interchangeably depending on the purpose and amount of material. Furthermore, SHS-GC-FID can be used for assessment of maximum storage time and quality of fennel fruit suitable for human consumption.

scholarly journals Recent advances in oregano (Lippia graveolens and Poliomintha Iongiflora): Extraction methods component determination, and their potential applications.

Quimica Hoy ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 15
Author(s):  
V. M. Jiménez Pérez ◽  
B. M. Muñoz Flores ◽  
E. Hernández Fernández ◽  
D. Celis ◽  
J. Treviño Carreón ◽  
...  
Keyword(s):  
Essential Oil ◽  
Extraction Methods ◽  
Oil Extraction ◽  
Recent Advances ◽  
Potential Applications ◽  
Medicinal Properties ◽  
Main Components

The work presented here describes the most significant advances in concerning the chemistry of oregano (Lippia graveolens and Poliomintha longiflora). We present new, green methods for essential oil extraction as well as the potential medicinal properties of said oil. This review also focuses on the determination of its main components, such as carvacrol and thymol. We describe their syntesis, reactivity, and potential applications of both compounds in various areas.

scholarly journals Simultaneous Determination of Essential Oil Components and Fatty Acids in Fennel using Gas Chromatography with a Polar Capillary Column

2015 ◽  
Vol 10 (9) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Menče Najdoska-Bogdanov ◽  
Jane B. Bogdanov ◽  
Marina Stefova
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Essential Oil ◽  
Simultaneous Determination ◽  
Soxhlet Extraction ◽  
Volatile Fraction ◽  
Foeniculum Vulgare ◽  
Oil Components ◽  
Main Components

Cultivated and wild growing samples of fennel ( Foeniculum vulgare Mill., Apiaceae) from R. Macedonia were studied for their volatiles and fatty acid composition. The main essential oil components isolated via hydrodistillation were: trans-anethole (>80%), estragole (<6%), limonene (<6%), anisaldehyde (<1%) and 0.5 % fenchone. An alternative method for characterization of both the non-polar volatile and non volatile fractions was developed using n-hexane and dichloromethane (3:1, v/v) in a Soxhlet extraction followed by transesterification. The obtained extracts were then characterized and the dominant fatty acid was 18:1 (petroselinic and oleic acid) 75.0–82.8 %, followed by 18:2 (linoleic acid) 10.8–16.2% and other fatty acids: palmitic (4.3–6.9%), stearic (1.2–1.7%) and myristic (0–2.9%). The results for the volatile fraction after Soxhlet extraction and transesterification did not significantly differ from results obtained after hydrodistillation, especially for the main components ( trans-anethole, estragole, fenchone and limonene), implying that the developed method can be used for simultaneous determination of volatiles and fatty acids.

Identification and Determination of the Components of Garden Sage (Salvia officinalis L.) Essential Oil, Isolated by Different Extraction Methods

2020 ◽  
Vol 75 (11) ◽  
pp. 1451-1460
Author(s):  
Z. A. Temerdashev ◽  
V. V. Milevskaya ◽  
L. P. Ryabokon’ ◽  
N. N. Latin ◽  
N. V. Kiseleva ◽  
...  
Keyword(s):  
Essential Oil ◽  
Extraction Methods ◽  
Salvia Officinalis ◽  
Salvia Officinalis L

scholarly journals Volatiles of Tanacetum macrophyllum Obtained by Different Extraction Methods

2018 ◽  
Vol 13 (7) ◽  
pp. 1934578X1801300
Author(s):  
Biljana Nikolić ◽  
Milić Matović ◽  
Marina Todosijević ◽  
Jovana Stanković ◽  
Mirjana Cvetković ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Extraction Methods ◽  
Static Headspace ◽  
Oxygenated Monoterpenes ◽  
Ms Analysis ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Headspace Gc

Terpene compounds of Tanacetum macrophyllum as 1) essential oils, obtained by hydrodistillation (HD), 2) essential oil extracts, obtained by simultaneous hydrodistillation and extraction (SDE) and 3) volatiles, obtained by Static Headspace GC-MS analysis (HS) were processed. Monoterpenes were the most dominant (49.2%, 49.5% and 90.4%, respectively). Profiles of essential oils obtained by HD and SD were quite similar, with oxygenated monoterpenes (39.3% and 39.4%) being the most abundant. In HS volatiles oxygenated monoterpenes also dominated (57.4%). Total sesquiterpenes were abundant in HD and SDE volatiles (38.2% and 39.2%, resp.), where sesquiterpene hydrocarbons were prevalent (27.3% and 28.7%, resp.). Germacrene D was dominant in HD and SDE oils (22.0% and 23.3%, resp.) and 1,8-cineole in HS volatiles (34.3%). To our knowledge, this is the first use of Headspace technique on T. macrophyllum. Furthermore, this is the first comparison of different techniques of volatile extraction in T. macrophyllum.

scholarly journals Determination of Chemical Composition and Antimicrobial Activity of Melaleuca cajuputi Essential Oil from Quang Tri Province, Vietnam

2020 ◽  
Vol 32 (9) ◽  
pp. 2203-2207
Author(s):  
TRAN QUOC TOAN ◽  
LAI PHUONG PHUONG THAO ◽  
NGUYEN QUYET CHIEN ◽  
NGUYEN THI HONG VAN ◽  
ÐOAN LAN PHUONG ◽  
...  
Keyword(s):  
Essential Oil ◽  
Maximum Yield ◽  
Batch Process ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Qualitative And Quantitative ◽  
Melaleuca Cajuputi ◽  
Main Components ◽  
Bactericidal Agent

The essential oil of Melaleuca cajuputi was obtained by hydrodistillation method. This work aims to adopt water as a solvent in a batch process to extract essential oil from Melaleuca cajuputi fresh leaves. The leaves are collected from Quang Tri Province, Vietnam. Analysis of constituents was performed by GC/MS. The maximum yield ranged from 0.6 to 0.7%. Several compounds have been identified in high quantities and meaningful qualitative and quantitative differences have been observed under different conditions. The main components of the M. cajuputi essential oil included eucalyptol (27.512%), γ-terpinene (8.59%), terpinolene (9.047%), β-eudesmene (3.359%), α- selinene (3.889%), α-terpineol (4.108%), 1R-α-pinene (2.158%), caryophyllene (6.48%) and α-caryophyllene (3.522%). This study has confirmed that the essential oil of M. cajuputi essential oil is a promising bactericidal agent on several Gram-positive and Gram-negative bacteria.

scholarly journals DETERMINATION OF SOME AGRONOMICAL CHARACTERISTICS AND ESSENTIAL OIL VARIATION IN DIFFERENT LOCAL Ocimum basilicum L. ECOTYPES UNDER SEMI-ARID CLIMATIC CONDITIONS

2019 ◽  
Vol 18 (3) ◽  
pp. 3-15
Author(s):  
Suleyman Kizil ◽  
Ozlem Toncer ◽  
Tahsin Sogut ◽  
Emel Diraz ◽  
Sengul Karaman
Keyword(s):  
Essential Oil ◽  
Climatic Conditions ◽  
Gas Chromatography Mass Spectrometry ◽  
Methyl Chavicol ◽  
Leaf Yield ◽  
Harvest Data ◽  
Oil Components ◽  
Main Components ◽  
Semi Arid

The study aimed to determine agronomic characteristics and essential oil components of different basil ecotypes in semi-arid climatic conditions of South Eastern Anatolia, Diyarbakir, Turkey. Two-year harvest data about fresh and dry herb yield, dry leaf yield, essential oil content and its components from the plants of year 2015 and 2016 was analyzed in this study. Essential oil components were detected by gas chromatography/mass spectrometry (GC/MS). The resulting outcomes demonstrated that both ecotypes and harvests had important effects on fresh and dry herb, dry leaf yield and essential oil contents of sweet basil. The highest dry leaf yield was noted from green leafy ecotypes and from second harvest stage. Twenty-three constituents were detected in the essential oil of O. basilicum ecotypes. The main components of basil essential oil were linalool, methyl chavicol, neral, geranial and methyl cinnamate that differed according to ecotypes and harvests during experimental years 2015 and 2016. Purple leafy basil ecotypes were determined as linalool rich, while greenish leaf ecotypes were abundant in methyl chavicol. Silbe – green ecotype contains higher neral and geranial levels than the other ecotypes. It was concluded that basil plant could be grown successfully and harvested two or more times to prefer for maximum dry leaf yield and essential oil contents under semi-arid climatic conditions.

scholarly journals Biological activity of essential oil from Foeniculum vulgare

2021 ◽  
Vol 24 (2) ◽  
pp. 148-152
Author(s):  
Petra Borotová ◽  
Lucia Galovičová ◽  
Veronika Valková ◽  
Hana Ďúranová ◽  
Nenad Vuković ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Antimicrobial Activity ◽  
Essential Oil ◽  
Vapour Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Volatile Components ◽  
Foeniculum Vulgare ◽  
Disk Diffusion Method ◽  
Bacterial Growth Inhibition

Abstract Foeniculum vulgare Mill. is a medicinal plant, used as a flavouring agent. The essential oil from F. vulgare has potential antimicrobial and insecticidal effects, and can be used in food industry in order to protect the food resources and food products against microbial and pest’s contamination. The aim of the research was to characterize the volatile components of F. vulgare essential oil by Gas Chromatography/Mass Spectrometry (GC/MS) and Gas Chromatography (GC-FID) and to observe the antimicrobial activity by disk diffusion method and in vapour phase. Also, insecticidal activity of the vapour phase of the essential oil of F. vulgare was detected. We found that major components of the essential oil from F. vulgare were trans-anethole (73.6%), fenchone (6.0%), and limonene (5.7%). Antimicrobial activity on gram-positive, gram-negative, and yeasts was weak in liquid phase, but vapour phase showed stronger activity against B. subtilis at the concentration 250 μL.L−1 (98.65% of bacterial growth inhibition). Vapour phase of essential oil was effective against insects, where 25% concentration had 80% lethality.

scholarly journals Distribution of Trans-Anethole and Estragole in Fennel (Foeniculum vulgare Mill) of Callus Induced from Different Seedling Parts and Fruits

2011 ◽  
Vol 3 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Abd El-Moneim Mohamed Radwan AFIFY ◽  
Hossam Saad EL-BELTAGI ◽  
Anwer Abd El-Aziz HAMMAMA ◽  
Mahassen Mohamed SIDKY ◽  
Omneya Farouk Ahmed MOSTAFA
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Human Consumption ◽  
Dichlorophenoxyacetic Acid ◽  
Ms Medium ◽  
Foeniculum Vulgare ◽  
Local Cultivar ◽  
Murashige And Skoog Medium ◽  
Different Types ◽  
2,4 Dichlorophenoxyacetic Acid

In the present study, seeds from local cultivar of fennel were germinated on Murashige and Skoog medium (MS) without plant growth regulators. Different types of explants from the growing seedling such as cotyledonal leaves, hypocotyls, epicotyls and roots were cultured on MS medium, contained different concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D) either alone or with kinetin. Differential responses in the essential oil constituents were observed in the induction and development of callus. The major components of essential oils includes estragole, trans-anethole, limonene and fenchone were studied under different conditions to find out the best methods which could be used to reduce the amount of estragole (not favorite for human consumption) and increase the amount of trans-anethole.

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