Determination of the Degree of Unsaturation in Essential Oils ; Определение степени ненасыщенности эфирных масел
In: Bulletin of the Scientific Centre for Expert Evaluation of Medicinal Products. Regulatory Research and Medicine Evaluation; Том 13, № 1 (2023); 112-120 ; Ведомости Научного центра экспертизы средств медицинского применения. Регуляторные исследования и экспертиза лекарственных средств; Том 13, 2023
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Zugriff:
Being widely used, medicinal products based on vegetable oils require strict regulation and evaluation of quality attributes, determination of shelf-life periods, and monitoring of storage conditions. The most common testing method for unsaturated compounds in vegetable oils is the iodine value determination, which has a range of limitations. An alternative method for determining the degree of unsaturation is based on epoxidation.The aim of the study was to evaluate the possibility of determining the degree of unsaturation of terpenoids and essential oils using peroxycarboxylic acids.Materials and methods. The authors performed epoxidation of linalool, myrcene, and lemon oil with peroxydecanoic and peroxyoctanoic acids, followed by iodometric titration of the excess acid.Results. The study demonstrated the possibility of measuring the degree of unsaturation of the selected essential oil and terpenoids using peracid epoxidation. The authors developed a procedure for determining the iodine value of essential oils and calculated the iodine values of linalool, myrcene, and lemon oil. Epoxidation proceeded as a second-order reaction. The authors obtained the following reaction rate constants: 3.9 L×mol–1×min–1 for linalool (298 К), 1.76 L×mol–1×min–1 for myrcene converting to monoxide (298 К), 0.044 L×mol–1×min–1 for myrcene epoxide converting to diepoxide (298 К), and 3.9 L×mol–1×min–1 for lemon oil (297 К).Conclusions. The suggested procedure involving peracid titration for rapid and efficient determination of the degree of unsaturation (iodine value) provides a potential basis for developing a quantification method for total unsaturated bioactive compounds in essential oils. ; Широкое применение лекарственных препаратов на основе растительных масел требует строгой регламентации и оценки показателей качества, установления срока годности и контроля условий хранения. Наиболее часто для определения ненасыщенных соединений, входящих в состав растительных масел, используется метод определения йодного числа, однако он ...
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Determination of the Degree of Unsaturation in Essential Oils ; Определение степени ненасыщенности эфирных масел
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Autor/in / Beteiligte Person: | Agafonov, A. M. ; Remezova, I. P. ; Kosenko, V. V. ; Bunyatyan, N. D. ; Anosovа, L. S. ; Evteev, V. A. ; Агафонов, А. М. ; Ремезова, И. П. ; Косенко, В. В. ; Бунятян, Н. Д. ; Аносова, Л. С. ; Евтеев, В. А. |
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Zeitschrift: | Bulletin of the Scientific Centre for Expert Evaluation of Medicinal Products. Regulatory Research and Medicine Evaluation; Том 13, № 1 (2023); 112-120 ; Ведомости Научного центра экспертизы средств медицинского применения. Регуляторные исследования и экспертиза лекарственных средств; Том 13, 2023 |
Veröffentlichung: | “NEICON ISP” LLC, 2023 |
Medientyp: | academicJournal |
DOI: | 10.30895/1991-2919-2023-492 |
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