海燕油的脂质概况、体外消化及氧化稳定性
Lipid profiles, in vitro digestion and oxidative stability of mutton bird oil.
作者信息
Akanbi Taiwo O, Barrow Colin J
机构信息
Centre for Chemistry and Biotechnology, Deakin University, Locked Bag, Geelong, VIC 20000 Australia.
出版信息
J Food Sci Technol. 2016 Feb;53(2):1230-7. doi: 10.1007/s13197-015-2106-7. Epub 2015 Nov 14.
The lipid profile, in vitro digestion and oxidative stability of mutton bird oil were investigated. Wax ester, triacylglycerol and sterol were the major lipids present as determined using capillary chromatography with flame ionisation detector (Iatroscan). Fatty acid analysis by gas chromatography (GC) showed that wax esters had a higher total omega-3 fatty acids content including EPA, DPA and DHA than TAGs (31 % and 24 %, respectively). In TAGs, (13)C nuclear magnetic resonance (NMR) data showed that EPA was statistically positioned at sn-1,3 and sn-2, while DHA was preferentially at sn-2. In vitro digestion using porcine pancreatic lipase resulted in 75 % of TAG and 10 % wax ester hydrolysis in 120 min. As reflected in the measured conjugated dienes (CD) and thiobarbituric acid reactive substances (TBARS) values during accelerated oxidation at 60 °C for 5 days, the oil was relatively stable against oxidation considering its high omega-3 content.
对楔尾海鸥油的脂质概况、体外消化和氧化稳定性进行了研究。使用带火焰离子化检测器的毛细管色谱法（Iatroscan）测定，蜡酯、三酰甘油和甾醇是主要的脂质成分。通过气相色谱法（GC）进行的脂肪酸分析表明，蜡酯中包括二十碳五烯酸（EPA）、二十二碳五烯酸（DPA）和二十二碳六烯酸（DHA）在内的总ω-3脂肪酸含量高于三酰甘油（分别为31%和24%）。在三酰甘油中，碳-13核磁共振（NMR）数据表明，EPA在统计学上位于sn-1,3和sn-2位，而DHA优先位于sn-2位。使用猪胰脂肪酶进行体外消化，120分钟内三酰甘油水解75%，蜡酯水解10%。在60°C加速氧化5天期间，根据测得的共轭二烯（CD）和硫代巴比妥酸反应性物质（TBARS）值反映，考虑到其高ω-3含量，该油对氧化相对稳定。
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