นโยบายงานวิจัย /จรรยาบรรณนักวิจัย /ระดับคุณภาพบทความวิจัยตีพิมพ์ /ระดับคุณภาพผลงานวิชาการ /แหล่งทุน /ดาวน์โหลด /ฐานข้อมูลวิจัย /วิเคราะห์-สังเคราะห์งานวิจัย /ลิขสิทธิ์ /ข่าว


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


Author

-

Bancha Yingngam & Adelheid Brantner


Journal

- Journal of Essential Oil Research

Volume

- 30

Year

- 2018

Publication type

- Research article (Inter)

Page list

- doi.org/10.1080/1041

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.


Keywords

   

Cassumunar ginger, central composite design, essential oil, green chemistry, solvent-free microwave extraction