Antioxidant properties of some plant extracts and effect of their addition on the oxidation stability of biodiesel

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY Chemistry Journal of Moldova Pub Date : 2023-12-01 DOI:10.19261/cjm.2023.1100

P. Kuzema, Iryna Laguta, O. Stavinskaya, Viktor Anishchenko, Anastasiia Kramar, Nataliia Smirnova, T. Fesenko, Roman Ivannikov, O. Linnik

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Abstract

The extracts from the leaves of Deschampsia antarctica É. Desv., Camelina sativa (L.) Crantz, and Camellia japonica L. plants, as well as from defatted Camelina sativa and Silybum marianum seedcakes were investigated as potential additives for improvement of biodiesel stability against oxidation. Composition of the extracts was studied by means of HPLC, and antioxidant properties were evaluated using the Folin-Ciocalteu assay and the DPPH test. The oxidation of biodiesel was monitored during the accelerated procedure at 43C, with the changes in the acid number of biodiesel samples being the criteria of this process. In spite of significant distinctions in the content of various phenolic compounds, all the extracts were found to possess high antioxidant activity and decelerate biodiesel oxidation by 9-26%. The data did not reveal a directly proportional relationship between the antioxidants content in the extract, on the one hand, and the enhancement in biodiesel stability, on the other hand; various extracts had different influence on the behaviour of biodiesel from rape and Camelina seed oils. The results obtained are consistent with the assumption that there is no universal stabilizer for different types of biodiesel and indicate the prospects on searching for novel antioxidants of natural origin to inhibit oxidative processes.

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一些植物提取物的抗氧化特性及其添加量对生物柴油氧化稳定性的影响

研究了从 Deschampsia antarctica É.Desv., Camelina sativa (L.) Crantz 和 Camellia japonica L. 植物以及脱脂荠菜和水飞蓟籽饼的提取物作为潜在添加剂进行了研究，以提高生物柴油的抗氧化稳定性。通过高效液相色谱法研究了提取物的成分，并使用 Folin-Ciocalteu 试验和 DPPH 试验评估了提取物的抗氧化性。在 43C 的加速过程中对生物柴油的氧化进行了监测，生物柴油样品酸数的变化是这一过程的标准。尽管各种酚类化合物的含量存在明显差异，但所有提取物都具有很高的抗氧化活性，可使生物柴油的氧化速度降低 9-26%。数据显示，一方面，提取物中的抗氧化剂含量与生物柴油稳定性的提高并不成正比；另一方面，各种提取物对油菜籽油和荠菜籽油生物柴油的性能有不同的影响。所获得的结果与不同类型生物柴油不存在通用稳定剂的假设一致，并预示着寻找新型天然抗氧化剂来抑制氧化过程的前景。

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来源期刊

Chemistry Journal of Moldova CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

12 weeks

期刊介绍： "Chemistry Journal of Moldova. General, Industrial and Ecological Chemistry" seeks to publish experimental or theoretical research results of outstanding significance and timeliness in all fields of Chemistry, including Industrial and Ecological Chemistry. The main goal of this edition is strengthening the Chemical Society of Moldova, following development of research in Moldovan chemical institutions and promotion of their collaboration with international chemical community. Manuscripts are welcome from all countries.