Simultaneous Analysis of Free/Combined Phytosterols in Rapeseed and Their Dynamic Changes During Microwave Pretreatment and Oil Processing

Overview

Journal Foods

Specialty Biotechnology

Date 2023 Jul 11

PMID 37430966

Authors

Dong Li

Dan Wang

Huaming Xiao

Xin Lv

Chang Zheng

Changsheng Liu

Hong Chen

Fang Wei

Affiliations

Soon will be listed here.

Abstract

Here, a simple, efficient, and rapid solid phase extraction-gas chromatography (SPE-GC) method was developed for the simultaneous analysis of free/combined phytosterols in rapeseed and their dynamic changes during microwave pretreatment and oil processing. First, by comparing different methods for extracting free/combined phytosterols from rapeseed and rapeseed cake, the Folch method was considered to be the optimal method and was selected in subsequent experiments. Subsequently, the extraction method was validated by determining the recoveries of standards (brassinosterol, campesterol, β-sitosterol and cholesteryl oleate) spiked in rapeseed and rapeseed oil samples, and the recoveries were in the range from 82.7% to 104.5% and 83.8% to 116.3%, respectively. The established method was applied to study the dynamic changes of the form and content of phytosterols in rapeseed and its products (rapeseed oil and cake) during rapeseed microwave pretreatment and the oil production process. Additionally, the results showed that more than 55% of the free/combined phytosterols in rapeseed were transferred to rapeseed oil during the oil processing, and this proportion will increase after microwave pretreatment of rapeseed. This work will provide analytical methods and data support for a comprehensive understanding of phytosterols in rapeseed and its products during oil processing.

Citing Articles

Steam explosion pretreatment enhances free/combined phytosterol extraction and utilization in rapeseed ( L.) and its processed products: Insights from SPE-GC approach.

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PMID: 39398977 PMC: 11470560. DOI: 10.1016/j.crfs.2024.100869.

Extraction and Quantitation of Phytosterols from Edible Brown Seaweeds: Optimization, Validation, and Application.

Chen Z, Shen N, Wu X, Jia J, Wu Y, Chiba H Foods. 2023; 12(2).

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