A Comparative Study between Different Tunisian Propolis Essential Oils and Their Antioxidant Activities
Propolis is a resinous substance collected by bees from plants with a complex and variable chemical composition. Propolis and its fractions possess multiple biological activities. This study focused on a chemical and statistical comparison between four Tunisian Propolis Essential Oils (PEO) and its...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2020-04-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.ijcce.ac.ir/article_39791_4b7d7296695531fbd8f707798d9dacde.pdf |
| Summary: | Propolis is a resinous substance collected by bees from plants with a complex and variable chemical composition. Propolis and its fractions possess multiple biological activities. This study focused on a chemical and statistical comparison between four Tunisian Propolis Essential Oils (PEO) and its antioxidant activities. Volatile oils were extracted by hydrodistillation and analyzed by GC-MS. Essential oil yield varied from 0.095% to 0.324%. A total of 59 volatile components were identified mainly dominated by sesquiterpenes and diterpenes hydrocarbons. Six major components were found in all samples collected from the four different locations α-Cedrol, Manoyl Oxide, Manool, Totarol, Tricosane, and Eicosane. The antioxidant activities of Tunisian propolis essential oils have been evaluated using two methods: β-carotene-linoleic acid bleaching and DPPH radical scavenging assays and the results were compared with the standard antioxidant (Triolox). PEO from Bizerte region presented a lower IC50 value (30.5 mg/mL) than that of the standard antioxidant Trolox (IC50 = 40.05 mg/mL) indicating high antioxidant capacity using DPPH assay but for the b-carotene-linoleic acid bleaching assay, PEO from Zouarine region had the lowest value of (IC50 = 26.5 mg/mL) compared to standard (IC50 = 31.25 mg/mL). Our findings demonstrated that Propolis Essential Oil (PEO) possess high antioxidant activities and may be suggested as a new potential source of natural antioxidant. |
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| ISSN: | 1021-9986 1021-9986 |