溶剂体系对棕榈仁油的提取、质量特征和挥发性化合物的比较

IF 1.9 4区 农林科学 Q3 CHEMISTRY, APPLIED
Peace C. Asuzu, Victor T. Wyatt, Papa Nii Asare-Okai, Nii Adjetey Tawiah, Kerby C. Jones, Alberta N. A. Aryee
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引用次数: 0

摘要

己烷(HEX)和二氯甲烷(DCM)已被用于从各种来源提取油,因为它们具有膨胀的溶解度和在低温下易于去除的低挥发性。然而,环境和健康问题使它们成为不理想的溶剂。本研究的目的是评估在HEX丙酮(1∶1,vol/vol)和DCM丙酮(1比1,vol/vol)混合物中加入丙酮提取的棕榈仁油(PKO)的提取效率和物理化学特性,作为单独DCM和HEX的替代品。与单一溶剂提取物相比,共溶剂系统提取的PKO具有更好的质量特性。回收的油、游离脂肪酸含量、过氧化值和其他质量特性以及热性能均在PKO和标准中规定的类似油的范围内。PKO中的单不饱和脂肪酸含量高达70%,其中月桂酸含量最高(48%-52%)。通过GC–MS在所有提取物中共鉴定出50种挥发性化合物,包括酰胺(1)、醇(1),醛(2),酮(3),酸(6),酯(6)和碳氢化合物(31),与DCM提取物相比,HEX提取物中的挥发物数量更高。十二烷酸、己醛和2-十一烷酮分别是最丰富的酸、醛和酮。主成分分析(PCA)区分了在极性柱和非极性柱上鉴定的挥发物,PC1和PC2分别占变异的88.2%和8.8%,67.3%和19.6%,几种常见的挥发性成分与所有使用的溶剂形成簇。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparison of solvent systems on extraction, quality characteristics, and volatile compounds of palm kernel oil

Comparison of solvent systems on extraction, quality characteristics, and volatile compounds of palm kernel oil

Hexane (HEX) and dichloromethane (DCM) have been used to extract oils from various sources due to their expansive solubility and low volatility that ease removal at low temperatures. However, environmental and health concerns make them undesirable solvents. The aim of this study was to evaluate the extraction efficiency and physicochemical characteristics of palm kernel oil (PKO) extracted with the addition of acetone in HEX-acetone (1:1, vol/vol) and DCM-acetone (1:1, vol/vol) mixtures as an alternative to DCM and HEX alone. PKO extracted with co-solvent systems had better quality characteristics compared with single solvent extracts. The oil recovered, free fatty acid content, peroxide value and other quality characteristics, and thermal properties were within the range for PKO, and similar oils as stipulated in standards. Monounsaturated fatty acid content in PKO was up to 70% of which lauric acid was the most abundant (48%–52%). A total of 50 volatile compounds were identified by GC–MS in all the extracts including amide (1), alcohol (1), aldehydes (2), ketones (3), acids (6), esters (6) and hydrocarbons (31) with higher numbers of volatiles in the HEX extracts compared to the DCM extracts. Dodecanoic acid, hexanal, and 2-undecanone were the most abundant acid, aldehyde, and ketone, respectively. Principal component analysis (PCA) differentiated the volatiles identified on the polar and non-polar columns with 88.2% and 8.8%, and 67.3% and 19.6% of the variation accounted for by PC1 and PC2, respectively, with several common volatile components forming a cluster from all the solvents used.

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来源期刊
CiteScore
4.10
自引率
5.00%
发文量
95
审稿时长
2.4 months
期刊介绍: The Journal of the American Oil Chemists’ Society (JAOCS) is an international peer-reviewed journal that publishes significant original scientific research and technological advances on fats, oils, oilseed proteins, and related materials through original research articles, invited reviews, short communications, and letters to the editor. We seek to publish reports that will significantly advance scientific understanding through hypothesis driven research, innovations, and important new information pertaining to analysis, properties, processing, products, and applications of these food and industrial resources. Breakthroughs in food science and technology, biotechnology (including genomics, biomechanisms, biocatalysis and bioprocessing), and industrial products and applications are particularly appropriate. JAOCS also considers reports on the lipid composition of new, unique, and traditional sources of lipids that definitively address a research hypothesis and advances scientific understanding. However, the genus and species of the source must be verified by appropriate means of classification. In addition, the GPS location of the harvested materials and seed or vegetative samples should be deposited in an accredited germplasm repository. Compositional data suitable for Original Research Articles must embody replicated estimate of tissue constituents, such as oil, protein, carbohydrate, fatty acid, phospholipid, tocopherol, sterol, and carotenoid compositions. Other components unique to the specific plant or animal source may be reported. Furthermore, lipid composition papers should incorporate elements of year­to­year, environmental, and/ or cultivar variations through use of appropriate statistical analyses.
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