<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use
Research on new, untapped seed oil sources is receiving increased attention. In this study, 18 different seed samples of <i>Tilia cordata</i> and <i>Tilia platyphyllos</i> from various locations in Slovenia were collected and oil was extracted. The compositions of triglycerid...
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doaj-e3c85b7a38ef4d03bca0eae2d5466e202021-06-01T01:19:10ZengMDPI AGApplied Sciences2076-34172021-05-01114932493210.3390/app11114932<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential UseNina Poljšak0Nina Kočevar Glavač1Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, SloveniaDepartment of Pharmaceutical Biology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, SloveniaResearch on new, untapped seed oil sources is receiving increased attention. In this study, 18 different seed samples of <i>Tilia cordata</i> and <i>Tilia platyphyllos</i> from various locations in Slovenia were collected and oil was extracted. The compositions of triglyceride fatty acids and unsaponifiable compounds were determined using GC-MS, while antioxidant activity was evaluated using the DPPH method. The oil content in the seeds varied significantly, from 9.1% to 21.7%. Linoleic acid (50–60%) was found to be the predominant fatty acid, followed by oleic acid (18–22%) and palmitic acid (8–9%). Characteristic cyclopropene fatty acids (sterculic, dihydrosterculic and malvalic acids) were present in the average range of 4–8.4%. Antioxidant activity ranged from 8.9% to 65.5%, and was higher, on average, for <i>T. platyphyllos.</i> Higher antioxidant activity was closely correlated with higher γ-tocopherol contents. Statistically significant correlations were confirmed between antioxidant activity and γ-tocopherol, between Δ-tocopherol and phytol, between stigmasterol and β-sitosterol and between squalene and malvalic acid. <i>Tilia</i> oil may be of great interest for cosmetic and dermal preparations. It is, however, not considered a good source of dietary fatty acids due to the undesired, significant content of omega-6 fatty acids.https://www.mdpi.com/2076-3417/11/11/4932vegetable oilfatty acidsunsaponifiablesantioxidant activity<i>Tilia</i> sp. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nina Poljšak Nina Kočevar Glavač |
spellingShingle |
Nina Poljšak Nina Kočevar Glavač <i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use Applied Sciences vegetable oil fatty acids unsaponifiables antioxidant activity <i>Tilia</i> sp. |
author_facet |
Nina Poljšak Nina Kočevar Glavač |
author_sort |
Nina Poljšak |
title |
<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use |
title_short |
<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use |
title_full |
<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use |
title_fullStr |
<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use |
title_full_unstemmed |
<i>Tilia</i> sp. Seed Oil—Composition, Antioxidant Activity and Potential Use |
title_sort |
<i>tilia</i> sp. seed oil—composition, antioxidant activity and potential use |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2021-05-01 |
description |
Research on new, untapped seed oil sources is receiving increased attention. In this study, 18 different seed samples of <i>Tilia cordata</i> and <i>Tilia platyphyllos</i> from various locations in Slovenia were collected and oil was extracted. The compositions of triglyceride fatty acids and unsaponifiable compounds were determined using GC-MS, while antioxidant activity was evaluated using the DPPH method. The oil content in the seeds varied significantly, from 9.1% to 21.7%. Linoleic acid (50–60%) was found to be the predominant fatty acid, followed by oleic acid (18–22%) and palmitic acid (8–9%). Characteristic cyclopropene fatty acids (sterculic, dihydrosterculic and malvalic acids) were present in the average range of 4–8.4%. Antioxidant activity ranged from 8.9% to 65.5%, and was higher, on average, for <i>T. platyphyllos.</i> Higher antioxidant activity was closely correlated with higher γ-tocopherol contents. Statistically significant correlations were confirmed between antioxidant activity and γ-tocopherol, between Δ-tocopherol and phytol, between stigmasterol and β-sitosterol and between squalene and malvalic acid. <i>Tilia</i> oil may be of great interest for cosmetic and dermal preparations. It is, however, not considered a good source of dietary fatty acids due to the undesired, significant content of omega-6 fatty acids. |
topic |
vegetable oil fatty acids unsaponifiables antioxidant activity <i>Tilia</i> sp. |
url |
https://www.mdpi.com/2076-3417/11/11/4932 |
work_keys_str_mv |
AT ninapoljsak itiliaispseedoilcompositionantioxidantactivityandpotentialuse AT ninakocevarglavac itiliaispseedoilcompositionantioxidantactivityandpotentialuse |
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