scholarly journals Characterization of Varietal Differences in Essential Oil Components of Hops (Humulus lupulus) by SFC–FTIR Spectroscopy

2000 ◽  
Vol 83 (3) ◽  
pp. 621-626 ◽  
Author(s):  
Rita H Auerbach ◽  
Kenan Dost ◽  
George Davidson
Keyword(s):  
Essential Oil ◽  
Chromatographic Method ◽  
Flow Cell ◽  
Humulus Lupulus ◽  
Ftir Analysis ◽  
Varietal Differences ◽  
Wave Numbers ◽  
Oil Components

Abstract A supercritical fluid chromatographic method combined with Fourier-transform infrared spectroscopy detection (SFC–FTIR) was developed for determination of varietal differences in essential oil constituents in hops (Humulus lupulus). Infrared spectra (IR) of the major constituents of essential oil of hops were taken as films deposited on AgCl discs and compared with those obtained after chromatographic separation in the IR flow-cell with supercritical carbon dioxide (scCO2). Spectra from AgCl discs were comparable to those in scCO2, but in scCO2 most of the bands appeared approximately 8–10 cm−1 to higher wave numbers. Open-tubular SFC–FTIR analysis of the essential oil of 4 different hop varieties was performed. The SFC–FTIR chromatograms showed differences in the location and relative intensity of the peaks depending on the variety, which was further confirmed by consideration of their FTIR spectra.

Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

2019 ◽  
Vol 70 (6) ◽  
pp. 2015-2020
Author(s):  
Silvia Robu ◽  
Aurelia Romila ◽  
Olimpia Dumitriu Buzia ◽  
Adrian Florin Spac ◽  
Camelia Diaconu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Mobile Phase ◽  
Chromatographic Method ◽  
Salvia Officinalis ◽  
Salvia Officinalis L ◽  
Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

Determination of Final Steps in Biosyntheses of Essential Oil Components inPerilla frutescens

Planta Medica ◽  
1989 ◽  
Vol 55 (03) ◽  
pp. 251-253 ◽  
Author(s):  
A. Nishizawa ◽  
G. Honda ◽  
M. Tabata
Keyword(s):  
Essential Oil ◽  
Oil Components

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 Determination of essential oil components, mineral matter, and heavy metal content of Salviavirgata Jacq. grown in culture conditions

2019 ◽  
Vol 43 (4) ◽  
pp. 395-404 ◽  
Author(s):  
Belgin COŞGE ŞENKAL ◽  
Tansu USKUTOĞLU ◽  
Cüneyt CESUR ◽  
Volkan ÖZAVCI ◽  
Hülya DOĞAN
Keyword(s):  
Heavy Metal ◽  
Essential Oil ◽  
Metal Content ◽  
Culture Conditions ◽  
Heavy Metal Content ◽  
Mineral Matter ◽  
Oil Components

Study on Surface Tension and Displacement Efficiency of Ionic Liquid Surfactants Containing Amine Functional Groups

2014 ◽  
Vol 484-485 ◽  
pp. 66-69
Author(s):  
Xiu Li Zhao ◽  
Chang Bao Zhang ◽  
Cheng Chen ◽  
Guo Qiao Li ◽  
Da Liu
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Functional Groups ◽  
Water Flooding ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Wave Numbers ◽  
Infrared Spectrometer

Description is given to preparation of three ionic liquid surfactants containing amine functional groups, characterization of their functional groups using the infrared spectrometer, determination of their surface tension and the oil displacement test in this paper to investigate the effect of alkane branch chains with different carbon numbers on the surface tension and the displacement efficiency. The result shows that, the surfactants exhibit the structural characteristic of the ionic liquid as the characteristic absorption peaks occur on C-N and C-H of the imidazole rings at the wave numbers of 1338cm-1, 1234cm-1, 1465cm-1 and 3142cm-1, respectively. The surface tension isothermal curves and the oil displacement test proved that the ionic liquid imidazole surfactants with shorter-chain groups are more active on surface, with the minimal surface tension up to 32.5 mN/m, and led to higher displacement efficiency, increasing by 3.3% at the concentration of 1000mg/L compared with the water flooding.

Characterization of the Essential Oil Components of Adapted Salvia sclarea L. (Clary sage) Plant Under Egyptian Environmental Conditions

2020 ◽  
Vol 23 (4) ◽  
pp. 788-794
Author(s):  
Ahmed E El-Gohary ◽  
Heba M. Amer ◽  
Adel B. Salama ◽  
Hend E. Wahba ◽  
Khalid A. Khalid
Keyword(s):  
Essential Oil ◽  
Environmental Conditions ◽  
Salvia Sclarea ◽  
Oil Components

Ultrasound-assisted extraction and dispersive liquid–liquid microextraction coupled with gas chromatography-mass spectrometry for the sensitive determination of essential oil components in lavender

2019 ◽  
Vol 11 (11) ◽  
pp. 1541-1550 ◽  
Author(s):  
Ping Chen ◽  
Bing Liu ◽  
Xin Liu ◽  
Jihong Fu
Keyword(s):  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Sensitive Determination ◽  
Ultrasound Assisted ◽  
Oil Components ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Ultrasound-assisted extraction and dispersive liquid–liquid microextraction coupled with GC-MS for the sensitive determination of essential oil components in lavender.

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