Boosting the essential oil yield from the rhizomes of cassumunar ginger by an eco-friendly solvent-free microwave extraction combined with central composite design

Abstract

This study aimed to apply the solvent-free microwave extraction (SFME) for isolating the essential oil from the rhizomes of cassumunar ginger and study the kinetic mechanism during the extraction process by light microscopy. A central composite design was employed to evaluate the influence of the key variables including microwave power and irradiation time on the oil recovery. The optimal process conditions of SFME were irradiation of the sample at 700 W for 70 min. Microwave power had the most significant effect on the oil recovery (p < 0.001), followed by irradiation time (p < 0.01). The major volatile constituents in the oil obtained under the optimal conditions were sabinene, terpinen-4-ol, and (E)-1-(3,4-dimethoxyphenyl) butadiene with a higher amount of the oxygenated compounds compared to those isolated by a conventional hydrodistillation (HD). Isolating the essential oil by SFME showed a complete extraction with higher plant cell rupture and was quicker than HD.

Repellent, larvicidal and adulticidal activities of essential oil from Dai medicinal plant Zingiber cassumunar against Aedes albopictus

“…The chemical composition of the Zingiber cassumunar essential oil in various countries and regions has been reported. Previous studies ( Bua-in and Paisooksantivatana, 2009 ; Leelarungrayub et al., 2017 ; Sukatta et al., 2009 ; Taroeno et al., 1991 ; Verma et al., 2018 ; Yingngam and Brantner, 2018 ) have shown that rhizome of Z. cassumunar essential oil from Thailand, India, and Indonesia are mainly composed of sabinene, terpinen-4-ol, and DMPBD, which is consistent with the results of our study. However, other studies have reported major components of Z. cassumunar essential oil that are inconsistent with our findings.…”

A holistic approach for microwave assisted solvent extraction of phenolic compounds from Ficus benghalensis fruits and its phytochemical profiling

“…This could be due to the improvement of power which leads to promote the solubility and diffusion of solute components out of the solid matrix (Alara, Abdurahman, Obanijesu, Alara, & Mudalip, 2020; Yingngam, Chiangsom, & Brantner, 2020). Moreover, the elevated pressure occurred due to microwaves inside the cell wall enhances micro explosions which could release the solute (Yingngam & Brantner, 2018). The yields are starting to decrease when the power level increases beyond 420 W. This is due to the higher microwave power promotes degradation of thermo sensitive phenolic compounds (Nabet et al, 2019).…”

Optimization of Ultrasonic-Assisted Extraction and Purification of Rhein from Cassia fistula Pod Pulp

“…3D response surface plots and contour plots were created with the developed quadratic polynomial equation in order to visualize the interaction between two independent variables and their effects on the yield of rhein. The quadratic regression model is widely used because of its universal usability in presenting different types of response surfaces [23]. From green to red, the different colors represent the increasing amount of rhein.…”

“…To evaluate and compare the impact or significance of the factor on the result, it was important to convert the real values of the level of each variable into dimensionless values. The coded units -1.68, -1, 0, +1, and +1.68 specify very low, low, intermediate, high, and very high values, respectively (Table 1) [22,23,24,31].…”