Recovery of Mint Essential Oil through Pressure-releasing Distillation during Subcritical Water Treatment

Tai-Ying Chiou; Masaaki Konishi; Shiori Nomura; Yasutaka Shimotori; Miki Murata; Naofumi Ohtsu; Yoshihito Kohari; Yuichi Nagata; Tohru Saitoh

doi:10.3136/fstr.25.793

Notes

Recovery of Mint Essential Oil through Pressure-releasing Distillation during Subcritical Water Treatment

Tai-Ying Chiou , Masaaki Konishi, Shiori Nomura, Yasutaka Shimotori, Miki Murata, Naofumi Ohtsu, Yoshihito Kohari, Yuichi Nagata, Tohru Saitoh

Author information

Tai-Ying Chiou Corresponding author
School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
Masaaki Konishi
School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
Shiori Nomura
Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
Yasutaka Shimotori
School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
Miki Murata
School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
Naofumi Ohtsu
School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
Yoshihito Kohari
School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
Yuichi Nagata
Kitami Hakka Tsusho Co., Ltd.
Tohru Saitoh
School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology

Keywords: essential oil, Japanese mint, subcritical water treatment, pressure-releasing distillation, superheated steam

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2019 Volume 25 Issue 6 Pages 793-799

DOI https://doi.org/10.3136/fstr.25.793

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Abstract

Subcritical water treatment with pressure-releasing distillation was proposed as a method to obtain essential oil from Japanese mint (Mentha arvensis L. var. piperascens Malinv. cv.). The extraction and fractionation were carried out between 100 °C and 220 °C, and extraction times of 5 to 60 min were investigated. Quantitative analysis of volatile component was conducted by gas chromatography. The yields of both l-menthol and l-menthone converged in the initial fractions as the extraction temperature was increased. The yields of l-menthol, l-limonene, l-menthone, and piperitone increased as the temperature was increased from 100 °C to 180 °C, but decreased as it was raised further to 220 °C. The yields of iso-menthone, 3-octanol, and l-menthyl acetate increased as temperature was increased up to 220 °C. The extraction time of 60 min showed a negative effect on the extraction, and the highest total yield (30.5 mg/g-dry leaves) was obtained at 180 °C with an extraction time of only 5 min.

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