Oil yield and chemical composition of shale from northern Alaska

1965 ◽  
Author(s):  
Harry Allison Tourtelot ◽  
Irvin L. Tailleur
Keyword(s):  
Chemical Composition ◽  
Oil Yield ◽  
Northern Alaska

scholarly journals Variation of essential oil composition of Eucalyptus camaldulensis (myrtaceae) from the Montengero coastline

2010 ◽  
pp. 151-158 ◽  
Author(s):  
Slavenko Grbovic ◽  
Dejan Orcic ◽  
Maria Couladis ◽  
Emilija Jovin ◽  
Dusan Bugarin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Eucalyptus Camaldulensis ◽  
Essential Oil Composition ◽  
Oil Yield ◽  
Oil Composition ◽  
Oxygenated Monoterpenes ◽  
Sesquiterpene Alcohol ◽  
Major Class ◽  
Leaf Essential Oil

In the current study the essential oil obtained from the leaves of Eucalyptus camaldulensis plants collected from five localities of the Montenegro coastline was analyzed. The oil yield varied from 0.63 % (Kotor) up to 1.59% (Tivat). The chemical composition of the leaf essential oil was analyzed using GC-MS technique. Monoterpene hydrocarbons were a major class of compounds. Among them, dominant compounds were p-cymene (17.38-28.60%), ?-phellandrene (12.35-14.47%) and ?-pinene (0.94-11.48%). The second largest group was oxygenated monoterpenes with cryptone (4.97-7.25) and terpinene-4-ol (2.75-4.21%) as predominant. Besides high content of sesquiterpene alcohol spathulenol (7.83-14.15%) was found. According to the results obtained E. camaldulensis from Montenegro can be classified in the chemotype with low 1,8-cineole and high p-cymene and cryptone ratio.

Variation of Malva sylvestris essential oil yield, chemical composition and biological activity in response to different environments across Southern Italy

2017 ◽  
Vol 98 ◽  
pp. 29-37 ◽  
Author(s):  
Sebastiano Delfine ◽  
Mariangela Marrelli ◽  
Filomena Conforti ◽  
Carmen Formisano ◽  
Daniela Rigano ◽  
...  
Keyword(s):  
Biological Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Southern Italy ◽  
Oil Yield ◽  
Malva Sylvestris ◽  
Essential Oil Yield

scholarly journals Chemical Composition of Marrubium Vulgare l. Essential Oil from Algeria

2013 ◽  
Vol 13 ◽  
pp. 210-214 ◽  
Author(s):  
Abderazak Abadi ◽  
Aicha Hassani
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Oil Yield ◽  
Aerial Parts ◽  
Germacrene D ◽  
Marrubium Vulgare

The chemical constituants of the essential oil from aerial parts of Marrubium vulgare, collected in Algeria, were analyzed by GC and GC/MS. The oil yield of the dried plant aerial parts, obtained by hydrodistillation, was 0.04% (w/w). 50 compounds, accounting for 82.46% of the oil, were identified. The major constituants were: 4,8,12,16-Tetramethyl heptadecan-4-olid (16.97%), Germacrene D-4-ol (9.61%), α-pinéne (9.37%) Phytol (4.87%), Dehydro-sabina ketone (4.12 %), Piperitone (3.27%), δ – Cadinene (3.13%), 1-Octen-3-ol (2.35%) and Benzaldehyde (2.31%).

scholarly journals Light intensities alter growth and essential oil of patchouli under shade nets

2022 ◽  
Vol 52 (5) ◽  
Author(s):  
Aurislaine Santos Ribeiro ◽  
Suzan Kelly Vilela Bertolucci ◽  
Alexandre Alves de Carvalho ◽  
Wesley Naves Tostes ◽  
Adriane Duarte Coelho ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Oil Content ◽  
Oil Yield ◽  
Light Intensities ◽  
Pogostemon Cablin ◽  
Aromatic Species ◽  
Pharmaceutical Industries ◽  
Essential Oil Yield

ABSTRACT: Pogostemon cablin (Blanco) Benth. is an aromatic species popularly known as patchouli. The essential oil rich in patchoulol extracted from leaves is used by the pharmaceutical industries. The objective was to investigate the effects of shade nets and shading intensities on P. cablin growth, anatomy, chemical composition and essential oil content. The experiment was conducted with two types of shade nets (black and Aluminet), three light intensities (30, 50, and 70% shading) and full sun. The different light intensities influenced the growth and the essential oil yield, and chemical composition. Patchouli plants grown in an environment with shading showed higher values for the leaf, stem, root ant total dry weights compared to full sun. At 50% of shading, Aluminet provided gain in stem and total dry weights. Aluminet and black net at 50 and 70% of shading enhance essential oil yield. Patchoulol and pogostol contents were higher under full sun, and, black net and Aluminet at 50% shading. The environment for patchouli cultivation can be improved by use shade nets, especially with Aluminet at 50% of shading.

Influence of common juniper berries pretreatment on the essential oil yield, chemical composition and extraction kinetics of classical and microwave-assisted hydrodistillation

2018 ◽  
Vol 122 ◽  
pp. 402-413 ◽  
Author(s):  
Miljana S. Marković ◽  
Dragana B. Radosavljević ◽  
Vladimir P. Pavićević ◽  
Mihailo S. Ristić ◽  
Svetomir Ž. Milojević ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Oil Yield ◽  
Extraction Kinetics ◽  
Microwave Assisted ◽  
Kinetics Of ◽  
Essential Oil Yield ◽  
Common Juniper

scholarly journals Chemical Description and Essential Oil Yield Variability of Different Accessions of Salvia lavandulifolia

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Jaime Usano-Alemany ◽  
Jesús Palá-Paúl ◽  
Manuel Santa-Cruz Rodríguez ◽  
David Herraiz-Peñalver
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Maximum Yield ◽  
Oil Production ◽  
Oil Yield ◽  
Cultivated Plants ◽  
Maturation Stage ◽  
Essential Oil Yield ◽  
Essential Oil Production

The amount and chemical composition of essential oils are crucial for the modulation of the flavor, scent and therapeutic properties of aromatic and medicinal plants. The aim of this study was to evaluate the effects of phenology and weather conditions on the essential oil yield obtained from the aerial parts of Salvia lavandulifolia Vahl. Besides, we tried to carry out an approach to the chemical composition at the time of full bloom. Essential oil production of several accessions was monitored throughout the whole phenological cycle, both, at the original location growing wild and at the experimental plot as cultivated plants. Local pedoclimatic conditions seem to be crucial for the plant essential oil production. Our results showed high conditioning rates from both yearly climatic conditions and developmental stage of the plants. Maximum yield production was reported at the full seed maturation stage (average 1.74%) and after a slight dry period (average 2.16%). Phytochemical differences were maintained when plants were forced to grow under common pedoclimatic conditions. Thereby, essential oil analysis showed some populations formed by clearly distinct individuals while others had more homogenous plants. Compounds such α-pinene, β-pinene + myrcene, limonene, 1,8-cineol, camphor and β-caryophyllene were the main compounds of the essential oils of S. lavandulifolia.

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