Cantele Carolina, Bertolino Marta, Bakro Fatema, Giordano Manuela, Jędryczka Małgorzata, Cardenia Vladimiro
Department of Agricultural, Forest and Food Sciences (DISAFA), University of Turin, Grugliasco (TO) 10095, Italy.
Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska Str. 34, 60-479 Poznan, Poland.
Antioxidants (Basel). 2020 Nov 14;9(11):1131. doi: 10.3390/antiox9111131.
The ability of hemp ( L.) inflorescence extract to counteract lipid oxidation was studied in stripped linseed oil. The ethanolic extract was characterized in terms of terpenes (6.00 mg/mL), cannabidiol (4.99% ), phenolic compounds (1.80 mg gallic acid equivalents (GAE)/mL), antiradical, and metal ion-chelating activities (50% effective concentration (EC) of 2.47 mg/mL and 0.39 mg/mL, respectively). The stripped linseed oil, used as control (CO), was mixed with hemp extract (HO) or α-tocopherol (EO) at a ratio of 0.6% () and stored for 7 days in darkness at 40 °C. Hemp extract reduced the oxidation and lipolysis processes. At the end of the storage, HO showed a significantly higher level of α-linolenic acid (ALA; 26.64 g/100 g), lower peroxide value (PV) (21.19 meq O/kg oil), and lower hexanal content (7.67 mmol/kg oil) than those found in the control. In contrast, EO showed a marked lipolysis (the free fatty acids increased by 42.57%) and a noticeable oxidation, since the ALA content decreased by 2.10% and a PV of 50 meq O/kg oil was observed. This study demonstrates that hemp inflorescences can be used as a source of natural antioxidants in vegetable oils and lipid products to retard their oxidation, especially those characterized by a high degree of unsaturation.
在脱臭亚麻籽油中研究了大麻（L.）花序提取物对抗脂质氧化的能力。对乙醇提取物的萜类化合物（6.00毫克/毫升）、大麻二酚（4.99%）、酚类化合物（1.80毫克没食子酸当量（GAE）/毫升）、抗自由基活性和金属离子螯合活性（50%有效浓度（EC）分别为2.47毫克/毫升和0.39毫克/毫升）进行了表征。将用作对照（CO）的脱臭亚麻籽油与大麻提取物（HO）或α-生育酚（EO）按0.6%（）的比例混合，并在40℃黑暗中储存7天。大麻提取物减少了氧化和脂解过程。储存结束时，HO中的α-亚麻酸（ALA；26.64克/100克）水平显著更高，过氧化值（PV）更低（21.19毫当量O/千克油），己醛含量更低（7.67毫摩尔/千克油），均低于对照。相比之下，EO表现出明显的脂解（游离脂肪酸增加了42.57%）和明显的氧化，因为ALA含量下降了2.10%，并且观察到PV为50毫当量O/千克油。这项研究表明，大麻花序可作为植物油和脂质产品中的天然抗氧化剂来源，以延缓其氧化，尤其是那些高度不饱和的产品。
