ULTRASOUND-ASSISTED EXTRACTION OF OIL FROM TEA SEEDS

Journal of Food Lipids Pub Date : 2009-11-26 DOI:10.1111/j.1745-4522.2009.01159.x

ANVAR SHALMASHI

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引用次数: 42

Abstract

ABSTRACT

Ultrasound-assisted extraction (UAE) of oil from tea seeds, and the effects of some operating parameters such as ultrasonic power, extraction time, extraction temperature and solvent to solid ratio on the yield of tea seed oil were investigated; some of the results were compared with those of the conventional method. It was found that UAE requires a shorter extraction time and a reduced solvent consumption. The yield of tea seed oil increased with the increase of the ultrasonic power and decreased as the temperature increased. The fatty acid compositions of the oils extracted by the ultrasound-assisted method and the conventional method were analyzed using gas chromatography. The result showed no significant affect on the compositions of the tea seed oil by the application of ultrasound.

PRACTICAL APPLICATIONS

The ultrasound-assisted extraction (UAE) can enhance the extraction efficiency, facilitating solvent penetration into the plant material and allowing the intracellular product release. Ultrasound also agitates the solvent used for extraction, thus increasing the contact surface area between the solvent and the targeted compounds by permitting greater penetration of the solvent into the sample matrix. Therefore, UAE reduces extraction time as well as solvent consumption. In addition, UAE can be carried out at a lower temperature, thus avoiding thermal damage to the extracts and minimizing the loss of bioactive compounds. Therefore, it may serve as an effective method for extraction of oil from tea seeds.

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超声辅助提取茶叶籽油的研究

摘要研究了超声辅助提取茶籽油的工艺，考察了超声功率、提取时间、提取温度、液固比等工艺参数对茶籽油得率的影响;并将部分结果与常规方法进行了比较。结果表明，UAE萃取时间短，溶剂用量少。茶籽油得率随超声功率的增加而增加，随温度的升高而降低。采用气相色谱法对超声辅助提取法和常规提取法提取的油进行脂肪酸组成分析。结果表明，超声波对茶籽油的成分无显著影响。超声辅助提取(UAE)可以提高提取效率，促进溶剂渗透到植物材料中，并允许细胞内产物释放。超声波也会搅动萃取所用的溶剂，从而增加溶剂和目标化合物之间的接触表面积，允许溶剂更大程度地渗透到样品基质中。因此，阿联酋减少了萃取时间和溶剂消耗。此外，UAE可以在较低的温度下进行，从而避免了对提取物的热损伤，并最大限度地减少了生物活性化合物的损失。因此，该方法可作为一种有效的茶叶籽油提取方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Food Lipids 工程技术-食品科技

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