期刊
FOODS
卷 11, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/foods11040610
关键词
hoki male gonad; lipid extraction; PEF; non-thermal food processing; fatty acid composition; phospholipids; NMR; ETHEX
资金
- International Scientific Partnership Program ISPP at King Saud University [ISPP16-73(2)]
This study investigated the effect of pulsed electric field treatment on the extraction of lipids from hoki fish male gonads. The results showed that a mild pulsed electric field pre-treatment significantly increased the total lipid yield and resulted in higher amounts of EPA, DPA, and DHA.
Processing of hoki, a commercially important fish species, generates substantial quantities of co-products, including male gonad, which contains valuable lipids, such as phospholipids, that could be recovered and utilised. Hoki fish male gonads (HMG) were subjected to pulsed electric fields (PEF) treatment at varying field strengths (0.625, 1.25, and 1.875 kV/cm) and frequencies (25, 50, and 100 Hz), at a fixed pulse width of 20 mu s. The total lipid was extracted using an ethanol-hexane-based (ETHEX) extraction method, and the phospholipid and fatty acid compositions were determined using P-31 NMR and GC-FID, respectively. The total lipid yield was increased from 4.1% to 6.7% by a relatively mild PEF pre-treatment at a field strength of 1.25 kV/cm and frequency of 50 Hz. A higher amount of EPA (8.2%), DPA (2.7%), and DHA (35.7%) were obtained by that treatment, compared to both un-heated (EPA: 8%; DPA: 2.5%; DHA: 35.2%) and heat-treated controls (EPA: 7.9%; DPA: 2.5%; DHA: 34%). No significant changes to the content of the major phospholipids were observed. PEF pre-treatment under mild conditions has potential for improving the total lipid yield extracted from fish male gonad.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据