Tilia sp. Seed Oil—Composition, Antioxidant Activity and Potential Use
Abstract
:1. Introduction
2. Materials and Methods
2.1. Reagents and Materials
2.2. Plant Materials
2.3. Oil Extraction
2.4. In Situ Derivatisation of Fatty Acids and Determination of the Fatty Acid Composition
2.5. Extraction, Derivatisation and Identification of Unsaponifiable Matter
2.6. Gas Chromatography Coupled with Mass Spectrometry
2.7. Antioxidant Activity
2.8. Statistical Analysis
3. Results and Discussion
3.1. Oil Content
3.2. Fatty Acid Composition
3.3. Unsaponifiable Matter
3.4. Antioxidant Activity
3.5. Potentials for Tilia Seed oil Use
4. Conclusions
Author Contributions
Funding
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Sample | Oil Content (%) | Oil Colour | Antioxidant Activity (%) | Unsaponifiable Substance (mg/100 g Total Unsaponifiable Matter) | |||||
---|---|---|---|---|---|---|---|---|---|
Phytol | Squalene | Δ-Tocopherol | γ-Tocopherol | Stigmasterol | β-Sitosterol | ||||
1 ● | 9.3 | brown | 18.0 | / | / | / | / | / | / |
2 ● | 15.1 | yellow | 54.8 | / | / | / | / | / | / |
3 ● | 12.5 | yellow | 15.6 | / | / | / | / | / | / |
4 ● | 21.7 | yellow | 62.7 | / | / | / | / | / | / |
5 ● | 14.9 | yellow | 52.5 | 81.5 | 17.6 | 4.0 | 13.3 | 0.7 | 54.4 |
6 ● | 9.1 | brown | 8.9 | / | / | / | / | / | / |
7 ● | 14.7 | yellow | 42.0 | 78.1 | 17.1 | 4.9 | 13.3 | 11.8 | 99.8 |
8 ● | 15.6 | yellow | 51.9 | / | / | / | / | / | / |
9 ▲ | 15.7 | yellow | 58.2 | / | / | / | / | / | / |
10 ▲ | 19.4 | yellow | 48.8 | / | / | / | / | / | / |
11 ▲ | 21.2 | yellow | 31.7 | 60.5 | 13.9 | <LOQ | 6.9 | <LOQ | 50.7 |
12 ▲ | 21.0 | yellow | 52.6 | 64.3 | 12.3 | 4.2 | 14.6 | 2.4 | 84.7 |
13 ▲ | 17.4 | yellow | 41.5 | / | / | / | / | / | / |
14 ▲ | 17.9 | yellow | 48.3 | 81.1 | 13.4 | 4.5 | 14.2 | 10.6 | 105.3 |
15 ▲ | 19.1 | yellow | 46.3 | 49.6 | 10.2 | <LOQ | 10.7 | 1.0 | 45.0 |
16 ▲ | 19.3 | yellow | 65.5 | 104.9 | 13.0 | 11.5 | 15.7 | 11.2 | 73.2 |
17 ▲ | 20.9 | yellow | 50.9 | / | / | / | / | / | / |
18 ▲ | 20.3 | yellow | 29.2 | 57.7 | 15.6 | <LOQ | <LOQ | <LOQ | 47.4 |
Lipid Number | Systematic Name (IUPAC) | Common Name | Average FA Content (%) in Tilia cordata Samples (USA) [8] | Average FA Content (%) in Tilia cordata Samples (Slovenia) | Average FA Content (%) in Tilia platyphyllos Samples (USA) [8] | Average FA Content (%) in Tilia platyphyllos Samples (Slovenia) |
---|---|---|---|---|---|---|
C14:0 | Tetradecanoic acid | Myristic acid | 0.21 0.18–0.24) | 0.14 (0.10–0.20) | 0.21 (0.18–0.23) | 0.14 (0.06–0.18) |
C16:0 | Hexadecanoic acid | Palmitic acid | 9.17 (8.32–9.86) | 8.59 (7.58–9.22) | 8.31 (8.13–8.49) | 8.55 (7.93–9.21) |
C16:1 (Δ9) | (9 Z)-9-hexadecenoic acid | Palmitoleic acid | 0.22 (0.19–0.24) | 0.13 (0.10–0.16) | 0.12 (0.11–0.12) | 0.07 (0.05–0.10) |
C17:1 (Δ10) | (10 Z)-10-heptadecenoic acid | / | / | 0.74 (0.49–1.02) | / | 0.68 (0.51–0.91) |
C17:1(Δ8) | 8-heptadecenoic acid | / | 0.76 (0.73–0.81) | / | 0.78 (0.69–0.86) | / |
C17:2 (Δ8,11) | 8, 11-heptadienoic acid | / | 1.1 (1.05–1.14) | / | 1.25 | / |
C18:0 | Octadecanoic acid | Stearic acid | 1.38 (1.13–1.61) | 1.38 (1.08–1.70) | 1.80 (1.45–2.15) | 1.55 (1.26–1.81) |
C18:1 | (9 E)-9-octadecanoic acid | Elaidic acid | / | 2.73 (2.29–3.19) | / | 2.18 (1.87–2.55) |
C18:1 | (11 E)-11-octadecanoic acid | Vaccenic acid | 1.36 (1.29–1.42) | - | 0.83 (0.76–0.89) | 0,02 (0–0.22) |
C18:1 (Δ7) | (7 Z)-7-(2-octyl-1-cyclopropenyl)heptanoic acid | cis-Malvalic acid | 8.27 (6.43–9.74) | 3.10 (1.82–3.64) | 5.58 (5.50–5.65) | 1.65 (1.13–2.34) |
C18:1 (Δ9) | (9 Z)-9-octadecanoic acid | Oleic acid | 22.0 (20.9–22.2) | 18.22 (14.87–19.83) | 19.5 (18.0–21.1) | 22.17 (19.23–23.79) |
C18:2 (Δ9,12) | (9 Z, 12 Z)-9, 12-octadecanoic acid | Linoleic acid | 48.4 (45.9–51.3) | 53.31 (41.22–59.86) | 56.5 (54.8–58.1) | 59.63 (56.66–62.32) |
C18:3 (Δ9,12,15) | (9 Z, 12 Z, 15 Z)-9, 12, 15-octadecatrienoic acid | α-Linolenic acid | 0.84 (0.72–0.92) | / | 0.78 (0.72–0.84) | / |
C19:0 | 8-(2-octylcyclopropyl)octanoic acid | Dihydrosterculic acid | 0.63 (0.42–0.80) | 0.62 (0–1.64) | 0.78 (0.68–0.87) | 1.46 (1.03–2.02 |
C19:1(Δ8) | (8 E)-8-(2-Octyl-1-cyclopropenyl)octanoic acid | cis-Sterculic acid | 4.91 (4.39–5.67) | 4.71 (1.56–10.98) | 2.89 (2.84–2.93) | 0.89 (0.36–1.82) |
Other saturated FAs | 0.29 (0.23–0.33) | / | 0.27 | / | ||
Other unsaturated FAs | 0.22 (0.18–0.27) | / | 0.27 (0.25–0.29) | / | ||
Average total cyclopropene FAs | 13.81 | 8.43 | 9.25 | 4.0 | ||
Average total saturated FAs | 11.68 | 10.73 | 11.37 | 11.7 | ||
Average total unsaturated FAs | 88.08 | 82.94 | 88.5 | 87.29 | ||
Sum of all identified FAs | 99.76 | 93.67 | 99.87 | 98.99 |
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Poljšak, N.; Kočevar Glavač, N. Tilia sp. Seed Oil—Composition, Antioxidant Activity and Potential Use. Appl. Sci. 2021, 11, 4932. https://0-doi-org.brum.beds.ac.uk/10.3390/app11114932
Poljšak N, Kočevar Glavač N. Tilia sp. Seed Oil—Composition, Antioxidant Activity and Potential Use. Applied Sciences. 2021; 11(11):4932. https://0-doi-org.brum.beds.ac.uk/10.3390/app11114932
Chicago/Turabian StylePoljšak, Nina, and Nina Kočevar Glavač. 2021. "Tilia sp. Seed Oil—Composition, Antioxidant Activity and Potential Use" Applied Sciences 11, no. 11: 4932. https://0-doi-org.brum.beds.ac.uk/10.3390/app11114932