scholarly journals Determination of borneol and other chemical compounds of essential oil of Dryobalanops aromatica exudate from Malaysia

2016 ◽  
Vol 15 (6) ◽  
pp. 1293 ◽  
Author(s):  
Tian-Xin Le ◽  
Anthony Siong-Hock Ho ◽  
Siau-Hui Mah ◽  
Tin-Wui Wong ◽  
Hean- Chooi Ong ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chemical Compounds

scholarly journals Chemical profile and potential antifungal of essential oil Schinus terebinthifolius and its by-products

2020 ◽  
Vol 9 (11) ◽  
pp. e91491110623
Author(s):  
Luiz Fernando Ganassali de Oliveira Júnior ◽  
Alexandre Passos Oliveira ◽  
Pryanka Thuyra Nascimento Fontes ◽  
Lucas Fonseca Menezes de Oliveira ◽  
Marília Cavalcante Santos ◽  
...  
Keyword(s):  
Essential Oil ◽  
Aqueous Extract ◽  
Steam Distillation ◽  
Chemical Constituents ◽  
Chemical Compounds ◽  
Schinus Terebinthifolius ◽  
Vitro Development ◽  
By Products

This study aimed to investigate the distillation time to obtain a higher yield of essential oil and by-product (extract and hydrolate) of Schinus terebinthifolius seeds, to determine the main chemical constituents of these products and the potential fungitoxic on the Colletotrichum gloeosporioides. To obtain the essential oil and by-products, we used the method of steam distillation for 2.5, 4.0, 5.5 and 7.0 hours. The determination of the chemical composition was made by GC/MS. To determine the potential fungitoxic on mycelial growth of C. gloeosporioides various concentrations of the oil and by-products were tested. Distillation periods did not influence the yield of aqueous extract and essential oil hydrolate. No chemical compounds have been identified in hydrolat or aqueous extract with the use of GC analysis. The essential oil at concentrations of 2%, 3% and 4% inhibited approximately 47% of the in vitro development of the fungus C. gloeosporioides.

scholarly journals Invitro Determination of Chemical Compounds and Antibacterial Activity of Lavandula Essential oil against some Pathogenic Microorganisms

2019 ◽  
Vol 27 (4) ◽  
pp. 77-89
Author(s):  
Samaneh Heydari ◽  
Hossein Jooyandeh ◽  
Behrooz Alizadeh behbahani ◽  
Mohammad Noshad ◽  
◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chemical Compounds ◽  
Pathogenic Microorganisms

Determination of the carvacrol concentration in the essential oil of Thymus kotschyanus

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
M Khanavi ◽  
H Hagimehdipoor ◽  
F Emadi ◽  
M Fathi ◽  
A Hadjiakhoondi
Keyword(s):  
Essential Oil ◽  
Thymus Kotschyanus

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.

Changes of some sewage sludge parameters prepared with an ultrasonic field

1997 ◽  
Vol 36 (11) ◽  
pp. 101-106 ◽  
Author(s):  
January Bien ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Microscopic Analysis ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Water Removal ◽  
Vacuum Filter ◽  
Additional Criterion ◽  
New Methods ◽  
Sludge Conditioning

Studies of sewage sludge conditioning by ultrasonic field concentrate on determination of the increase of water removal effect, which depends on kind of sludge and chemical compounds used in the dewatering process. An attempt was made to find new methods of sludge preparation before dewatering. Tests presented here focused on digested and difficult dewatered sludge. The sludge was dewatered on a vacuum filter after conditioning with polyelectrolytes and the ultrasonic field. The microscopic analysis was an additional criterion to evaluate changes in the sludge structure after preparation. The polyelectrolyte dose of 3 mg/g d.m. sonicated within 15 sec. resulted in the 50% decrease of sludge volume. Results presented confirmed our previous experiences, concerning the relation between conglomerates of sludge and the effect of dewatering.

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

Manufacturing Process for Extracting Essential Oils from White Pepper (Piper nigrum L.) by Hydrodistillation Technique

2019 ◽  
Vol 298 ◽  
pp. 89-93 ◽  
Author(s):  
Thien Hien Tran ◽  
Thi To Quyen Ngo ◽  
Thi Kim Ngan Tran ◽  
Tri Duc Lam ◽  
Tan Phat Dao ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Manufacturing Process ◽  
Oil Extraction ◽  
Piper Nigrum ◽  
Optimal Conditions ◽  
Distillation Process ◽  
White Pepper ◽  
Oil Performance

Vietnam is the world's leading country in growing and producing pepper trees. In this study, we attempted the optimization of white pepper essential oil extraction. The obtained oil was then subject to determination of constituent composition via GC-MS method. The essential oil performance achieved 3.6% by hydro-distillation process with optimal conditions (25 grams of fresh pepper, size 18, 120 minutes extraction, 130°C). A total of 23 volatile constituents were identified from the white pepper essential oil, with the major components being 27.4% of Limonene, 3-Carene 22,928%, Sabinene 17,622%, β-pinene 10.068%, α-Pinene 5.426%.

Determination of Agarwood oil’s significant chemical compounds using principal component analysis

2020 ◽  
Author(s):  
Mohamad Hushnie Haron ◽  
Mohd Nasir Taib ◽  
Nurlaila Ismail ◽  
Nor Azah Mohd Ali ◽  
Saiful Nizam Tajuddin
Keyword(s):  
Principal Component Analysis ◽  
Principal Component ◽  
Chemical Compounds ◽  
Component Analysis ◽  
Significant Chemical
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