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中国精品科技期刊2020
孔凡华,王轩,于连洋,等. 高效液相色谱-蒸发光检测器法测定鸡蛋中卵磷脂的含量[J]. 食品工业科技,2021,42(13):299−303. doi: 10.13386/j.issn1002-0306.2020080041.
引用本文: 孔凡华,王轩,于连洋,等. 高效液相色谱-蒸发光检测器法测定鸡蛋中卵磷脂的含量[J]. 食品工业科技,2021,42(13):299−303. doi: 10.13386/j.issn1002-0306.2020080041.
KONG Fanhua, WANG Xuan, YU Lianyang, et al. Determination of Phospholipids in Egg by High Performance Liquid Chromatography Coupled with Evaporative Light Scattering Detector[J]. Science and Technology of Food Industry, 2021, 42(13): 299−303. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020080041.
Citation: KONG Fanhua, WANG Xuan, YU Lianyang, et al. Determination of Phospholipids in Egg by High Performance Liquid Chromatography Coupled with Evaporative Light Scattering Detector[J]. Science and Technology of Food Industry, 2021, 42(13): 299−303. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020080041.

高效液相色谱-蒸发光检测器法测定鸡蛋中卵磷脂的含量

Determination of Phospholipids in Egg by High Performance Liquid Chromatography Coupled with Evaporative Light Scattering Detector

  • 摘要: 建立高效液相色谱-蒸发光检测器法测定鸡蛋中卵磷脂含量的分析方法。以Intersil SIL-100A 色谱柱(4.6 mm×100 mm, 5 μm)为分离柱,甲醇-乙腈-异丙醇为流动相,流速0.8 mL/min,柱温30 ℃,以空气作为雾化气,气体流速1.7 L/min,漂移管温度45 ℃。结果表明,磷脂酰胆碱和磷脂酰乙醇胺在0.052~1.031 mg/mL和0.041~0.823 mg/mL范围内与峰面积有良好线性关系,鸡蛋中磷脂酰胆碱和磷脂酰乙醇胺精密度的相对标准偏差(RSD)分别为2.55%和2.50%,加标回收率分别为93.0%~101.8%和96.7%~106.7%,表明该方法重复性好、准确度高。测定已知磷脂含量的鸡蛋样品,结果显示蒸发光检测器的测定结果比紫外检测器测定结果更符合真值,实验建立的方法可以准确定量鸡蛋中卵磷脂的含量,是测定蛋黄卵磷脂成分的理想方法。

     

    Abstract: An analytical method was developed for determining phospholipids in egg by high-performance liquid chromatography with an evaporative light scattering detector (HPLC-ELSD). Yolk phosphatidylcholine was successfully separated on a Intersil SIL-100A column(4.6 mm×100 mm, 5 μm), using methanol-acetonitrile-isopropanol as mobile phase at a flow rate of 0.8 mL/min and column temperature was set at 30 ℃. Air was used as atomizing gas and the gas flow rate was 1.7 L / min and the drift tube temperature was 45 ℃. The results showed that the linear range of phosphatidylcholine and phosphatidylethanolamine were 0.052~1.031 mg/mL and 0.041~0.823 mg/mL. The relative standard deviations(RSDs) of phosphatidylcholine and phosphatidylethanolamine in egg were 2.55% and 2.50%, the recovery rates were 93.0%~101.8% and 96.7%~106.7%, indicating high reproducibility and accuracy. The results of the determination by known content egg showed that the results by the evaporative light detector were more consistent with the true value than the ultraviolet detector. Therefore, this developed method can be applied to more accurate determine of phosphatidylcholine in egg and it is an ideal method.

     

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