Mushtaq Ayesha, Hanif Muhammad Asif, Nadeem Raziya, Mushtaq Zahid
Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan.
Department of Biochemistry, University of Agriculture Faisalabad, 38040, Pakistan.
Heliyon. 2024 Sep 25;10(19):e38394. doi: 10.1016/j.heliyon.2024.e38394. eCollection 2024 Oct 15.
Menthol, terpene alcohol with a strong minty, cooling odor and taste is highly popular in food, flavor, cosmetic and pharmaceutical industries. Crystallization of menthol from mint oil is a tedious process involving high cost and a much longer period. The present study has been undertaken to devise a new method with low input and with higher production rates. The crystallization of menthol was performed by the methods including Temperature programmed cooling process (TPCP); Short-path molecular fractional distillation (SPMFD) and Stripping crystallization (SC). About 99 % menthol contained in the mint oil was recovered during the crystallization process. The characterization techniques such as scanning electron microscopy (SEM) for surface morphology, x-ray diffraction (XRD) for crystal structure and crystallite size evaluation, and FTIR and Raman spectroscopy for analyzing the chemical nature of the crystals.
薄荷醇是一种具有强烈薄荷味和清凉气味及味道的萜烯醇，在食品、香料、化妆品和制药行业非常受欢迎。从薄荷油中结晶薄荷醇是一个繁琐的过程，成本高且耗时更长。本研究旨在设计一种低投入、高生产率的新方法。薄荷醇的结晶通过程序降温法（TPCP）、短程分子分馏（SPMFD）和汽提结晶（SC）等方法进行。在结晶过程中回收了薄荷油中约99%的薄荷醇。表征技术包括用于表面形态的扫描电子显微镜（SEM）、用于晶体结构和微晶尺寸评估的X射线衍射（XRD），以及用于分析晶体化学性质的傅里叶变换红外光谱（FTIR）和拉曼光谱。
