Essential Oil Extraction, Chemical Analysis and Anti-Candida Activity of Calamintha nepeta (L.) Savi subsp. glandulosa (Req.) Ball—New Approaches

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%.

Download Full-text

The design and build of ohmic heated hydro distillation for the essential oil extraction of eucalyptus leaves

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/672/1/012017 ◽

2021 ◽

Vol 672 (1) ◽

pp. 012017

Author(s):

Iswahyono ◽

A.S. Saleh ◽

S Djamila ◽

A. Bahariawan ◽

L. Komariah

Keyword(s):

Essential Oil ◽

Oil Extraction ◽

Eucalyptus Leaves

Download Full-text

Essential oil extraction from fresh needles of Pinus pumila (Pall.) Regel using a solvent-free microwave-assisted methodology and an evaluation of acetylcholinesterase inhibition activity in vitro compared to that of its main components

Industrial Crops and Products ◽

10.1016/j.indcrop.2021.113549 ◽

2021 ◽

Vol 167 ◽

pp. 113549

Author(s):

Xiaojin Peng ◽

Xinyu Yang ◽

Huiyan Gu ◽

Lei Yang ◽

Hongfei Gao

Keyword(s):

Essential Oil ◽

Oil Extraction ◽

Solvent Free ◽

Acetylcholinesterase Inhibition ◽

Inhibition Activity ◽

Pinus Pumila ◽

Microwave Assisted ◽

Main Components

Download Full-text

Integration of the green chemistry approach in essential oil extraction practice to develop students’ critical thinking skills

Empowering Science and Mathematics for Global Competitiveness ◽

10.1201/9780429461903-47 ◽

2019 ◽

pp. 328-333

Author(s):

C. Bakkara ◽

Y. Rahmawati ◽

S. Budi

Keyword(s):

Critical Thinking ◽

Essential Oil ◽

Green Chemistry ◽

Thinking Skills ◽

Oil Extraction ◽

Critical Thinking Skills

Download Full-text

Central Composite Design, Kinetic Model, Thermodynamics, and Chemical Composition of Pomelo (Citrus Maxima (Burm.) Merr.) Essential Oil Extraction by Steam Distillation

Processes ◽

10.3390/pr9112075 ◽

2021 ◽

Vol 9 (11) ◽

pp. 2075

Author(s):

Tan Phat Dao ◽

Thanh Viet Nguyen ◽

Thi Yen Nhi Tran ◽

Xuan Tien Le ◽

Ton Nu Thuy An ◽

...

Keyword(s):

Activation Energy ◽

Kinetic Model ◽

Essential Oil ◽

Rate Constant ◽

Flow Rate ◽

Steam Distillation ◽

Extraction Process ◽

Oil Extraction ◽

Extraction Time ◽

Pomelo Peel

Pomelo peel-derived essential oils have been gaining popularity due to greater demand for stress relief therapy or hair care therapy. In this study, we first performed optimization of parameters in the pomelo essential oil extraction process on a pilot scale to gain better insights for application in larger scale production. Then extraction kinetics, activation energy, thermodynamics, and essential oil quality during the extraction process were investigated during the steam distillation process. Three experimental conditions including material mass, steam flow rate, and extraction time were taken into consideration in response surface methodology (RSM) optimization. The optimal conditions were found as follows: sample weight of 422 g for one distillation batch, steam flow rate of 2.16 mL/min and extraction time of 106 min with the coefficient of determination R2 of 0.9812. The nonlinear kinetics demonstrated the compatibility of the kinetic model with simultaneous washing and unhindered diffusion with a washing rate constant of 0.1515 min−1 and a diffusion rate constant of 0.0236 min−1. The activation energy of the washing and diffusion process was 167.43 kJ.mol−1 and 96.25 kJ.mol−1, respectively. The thermodynamic value obtained at the ΔG° value was −35.02 kJ.mol−1. The quality of pomelo peel essential oil obtained by steam distillation was characterized by its high limonene content (96.996%), determined by GC-MS.

Download Full-text

Chemical composition and insecticidal activity of Garcinia gardneriana (Planchon & Triana) Zappi (Clusiaceae) essential oil

Boletin Latinoamericano y del Caribe de Plantas Medicinales y Aromaticas ◽

10.37360/blacpma.21.20.5.37 ◽

2021 ◽

Vol 20 (5) ◽

pp. 503-514

Author(s):

Carla Maria Mariano Fernandez ◽

◽

Fabiana Brusco Lorenzetti ◽

Sirlene Adriana Kleinubing ◽

Joao Paulo Pinguello de Andrade ◽

...

Keyword(s):

Mass Spectrometry ◽

Gas Chromatography ◽

Chemical Composition ◽

Chemical Analysis ◽

Essential Oil ◽

Immersion Test ◽

Acaricidal Activity ◽

Gas Chromatography Mass Spectrometry ◽

Larvicidal Effect ◽

Sesquiterpene Hydrocarbons

The present study aimed to analyze the chemical composition of the essential oil from Garcinia gardneriana (Planchon & Triana) Zappi leaves and fruits, and to determine its acaricidal activity on Rhipicephalus microplus by larval packet test and larvicidal action on Aedes aegypti by larval immersion test. The chemical analysis of the essential oil by gas chromatography-mass spectrometry identified sesquiterpene hydrocarbons and oxygenated sesquiterpenes in bacupari leaves and fruits, and α-cedrene, α-chamigrene, α-trans-bergamotene, and β-curcumene as major compounds. Essential oil from leaves of G. gardneriana presented acaricidal activity on R. microplus (LC50 = 4.8 mg/mL; LC99 = 10.8 mg/mL) and larvicidal effect on A. aegypti (LC50 = 5.4 mg/mL; LC99 = 11.6 mg/mL), whereas essential oil from the fruits of G. gardneriana showed LC50 = 4.6 mg/mL and LC99 = 8.9 mg/mL against R. microplus and LC50 = 6.4 mg/mL and LC99 = 13.9 mg/mL against A. aegypti. These results thus demonstrate the potential acaricidal and larvicidal activity of essential oil of G. gardneriana, offering new perspectives for the realization of bioassays from this essential oil.

Download Full-text