当前位置: X-MOL 学术Eur. J. Lipid Sci. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Simple Wet Rendering Method for Extraction of Prime Quality Oil from Skipjack Tuna Eyeballs
European Journal of Lipid Science and Technology ( IF 1.8 ) Pub Date : 2020-06-29 , DOI: 10.1002/ejlt.202000077
Khamtorn Pudtikajorn 1 , Soottawat Benjakul 1
Affiliation  

Oil from skipjack tuna (ST) eyeballs is extracted by the wet rendering method at 121 °C for different holding times (5–60 min) using an autoclave. Yield increases as heating time increases up to 20 min (p < 0.05); no further increase is obtained with a longer heating time (p > 0.05). Conversely, acid value and total polar compounds increase. However, peroxide value (PV), thiobarbituric acid reactive substances, and anisidine value (AnV) decrease up to 30 min. No changes in unsaponifiable matter (UM) or conjugated diene (CD) are attained, regardless of heating time. Polar components (PC) increase with heating time (p < 0.05). All oil samples have a high polyunsaturated fatty acids (PUFA) content (40.46–41.00%), with monounsaturated fatty acids (MUFA) and saturated fatty acids (SFA) in the range of 20.94–21.26% and 37.77–38.45%, respectively. PUFA content is reduced slightly with a heating time of 60 min. Docosahexaenoic acid (DHA) (C22:6, n3) is the dominant fatty acid in all samples (31.67–32.24%). Based on FTIR spectra, heating for longer time results in lower intensity at wavenumbers of 3015 and 1740 cm−1. Thus, light yellow oil from ST eyeballs prepared by a green process for an appropriate time can serve as an excellent source of DHA and other PUFA.

中文翻译:

从Ski鱼金枪鱼眼中提取优质油的简单湿法渲染方法

skip鱼金枪鱼(ST)眼球中的油脂是通过湿法在121°C下使用高压釜在不同的保持时间(5-60分钟)中提取的。随着加热时间延长至20分钟,产量增加(p <0.05);较长的加热时间无法获得进一步的提高(p  > 0.05)。相反,酸值和总极性化合物增加。但是,过氧化物值(PV),硫代巴比妥酸反应性物质和茴香胺值(AnV)最多降低30分钟。无论加热时间如何,都无法实现不皂化物(UM)或共轭二烯(CD)的变化。极性成分(PC)随着加热时间(p<0.05)。所有油样均具有较高的多不饱和脂肪酸(PUFA)含量(40.46-41.00%),单不饱和脂肪酸(MUFA)和饱和脂肪酸(SFA)的范围分别为20.94-21.26%和37.77-38.45%。随着60分钟的加热时间,PUFA含量略有降低。二十二碳六烯酸(DHA)(C22:6,n3)是所有样品中的主要脂肪酸(31.67–32.24%)。基于FTIR光谱,长时间加热导致在3015和1740 cm -1的波数下较低的强度。因此,通过绿色工艺在适当的时间制备的ST眼球的浅黄色油可以用作DHA和其他PUFA的极佳来源。
更新日期:2020-06-29
down
wechat
bug