Bonazza Francesca, Monti Lucia, Povolo Milena, Gasparini Andrea, Pelizzola Valeria, Cabassi Giovanni
National Research Council, Institute of Sciences of Food Production (ISPA), Via Celoria 2, 20133 Milan, Italy.
CREA Research Centre for Animal Production and Aquaculture, Via Antonio Lombardo 11, 26900 Lodi, Italy.
Molecules. 2024 Nov 26;29(23):5577. doi: 10.3390/molecules29235577.
Hempseed oil (HSO) is extremely rich in unsaturated fatty acids, especially linoleic (18:2 n-6) and α-linolenic (18:3 n-3) acids, which determine its high sensitivity to oxidative and photo-oxidative degradations that can lead to rancidity despite the presence of antioxidant compounds. The aim of this work was to evaluate which material/temperature/light solutions better preserve HSO quality during its shelf life and to test NIR as a rapid, non-destructive technique for monitoring oxidation phenomena. Futura 75 hemp seeds were cold-pressed; the oil was packed into 20 mL vials of four different materials (polypropylene, clear glass, amber glass, and amber glass coated with aluminum foil) and stored for 270 days at 25 °C under diffused light and at 10 °C in dark conditions., Peroxides and conjugated dienes and trienes were evaluated at intervals to monitor oil stability. Moreover, NIR spectra were measured in transmission, and the sample dataset was analyzed using ASCA to test the significance of the experimental factors: the model showed the significance of all factors and of all the simple interactions. Our results demonstrate that oil stored in amber glass vials with aluminum foils at refrigerated temperatures receive the highest protection from environmental conditions, mitigating oxidative changes, and that the NIR technique could be used to rapidly monitor HSO oxidation parameters.
大麻籽油（HSO）富含不饱和脂肪酸，尤其是亚油酸（18:2 n-6）和α-亚麻酸（18:3 n-3），这使得它对氧化和光氧化降解高度敏感，尽管存在抗氧化化合物，仍可能导致酸败。这项工作的目的是评估哪种材料/温度/光照解决方案能在保质期内更好地保持HSO的质量，并测试近红外光谱（NIR）作为一种快速、无损的技术来监测氧化现象。对Futura 75大麻种子进行冷榨；将油装入四种不同材料（聚丙烯、透明玻璃、琥珀色玻璃和涂有铝箔的琥珀色玻璃）的20毫升小瓶中，在25℃漫射光下和10℃黑暗条件下储存270天。定期评估过氧化物、共轭二烯和三烯，以监测油的稳定性。此外，测量近红外光谱的透射率，并使用ASCA分析样本数据集，以测试实验因素的显著性：模型显示了所有因素和所有简单相互作用的显著性。我们的结果表明，在冷藏温度下储存在涂有铝箔的琥珀色玻璃瓶中的油受到环境条件的保护最大，减轻了氧化变化，并且近红外技术可用于快速监测HSO的氧化参数。
