使用ATR-FTIR光谱学量化确定橄油与廉价油的改
Mahmoud Alkhatib1, Iman Alassa1, Samia Alkhatib2
1Department of Chemistry and Chemical Technology, Faculty of Science and Technology, Al-Quds University, Jerusalem, Palestine.
Food chemistry
|February 20, 2026
概括
减弱总反射度里埃变换红外光谱 (ATR-FTIR) 有效地检测和量化了额外处女橄油 (EVOO) 中的改. 这种快速方法通过识别更便宜的植物油污染物来确保EVOO的纯度.
科学领域:
- 分析化学 分析化学
- 食品科学 食品科学 食品科学
- 频谱学是一种光谱学.
背景情况:
- 额外处女橄油 (EVOO) 因其质量和健康益处而受到高度重视.
- 乙烯O易被更便宜的植物油改,影响其市场价值和真实性.
- 需要准确的方法来检测和量化EVOO伪造.
研究的目的:
- 采用减弱总反射度里埃变换红外光谱法 (ATR-FTIR) 来评估EVOO的纯度.
- 开发一种快速,具有成本效益的方法来检测和量化EVOO中的造.
- 为了验证EVOO分析ATR-FTIR方法的准确性,精度,线性和选择性.
主要方法:
- 利用ATR-FTIR光谱法测量了在5000-500厘米-1波数范围内的吸收率.
- 分析了50个巴勒斯坦EVOO样本,包括与玉米,向日和大豆油混合的样本.
- 开发了基于特定吸收率的校准曲线和衍生的定量方程.
主要成果:
- 鉴定了纯EVOO的特征吸收比,例如583.9/2922.2厘米-1 (平均0.1136±0.0012).
- 建立了经过验证的方程,以量化具有高确定系数 (R2 > 0.997) 的伪造油 (玉米,向日,大豆) 的百分比.
- 证明了该方法在检测伪造时的准确性,精度,线性和选择性.
结论:
- ATR-FTIR光谱是一种可靠和有效的工具,用于检测和量化额外处女橄油中的造.
- 开发的方法提供了一种快速,经济有效和直接的方法,以确保EVOO的真实性.
- 这种技术支持橄油市场的质量控制和消费者保护.
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