Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds
Abstract Dried rosemary leaves (Rosmarinus officinalis Lamiaceae), and dried clove buds (Syzygium aromaticum) were irradiated with γ-irradiation by Cobalt-60 as an irradiation source at different doses (0, 5, 10, 15, 20, 25 and 30kGy) as an effective method for sterilization, pasteurization and food...
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| Format: | Article |
| Language: | Arabic |
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The Union of Arab Universities
2019-09-01
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| Series: | Arab Universities Journal of Agricultural Sciences |
| Subjects: | |
| Online Access: | https://ajs.journals.ekb.eg/article_59403_cdb7cba0990dcc793539d2bf4aeda211.pdf |
| _version_ | 1797269786934116352 |
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| author | Wafaa Shahin Ahmed Gibriel Hanan Abdo |
| author_facet | Wafaa Shahin Ahmed Gibriel Hanan Abdo |
| author_sort | Wafaa Shahin |
| collection | DOAJ |
| description | Abstract Dried rosemary leaves (Rosmarinus officinalis Lamiaceae), and dried clove buds (Syzygium aromaticum) were irradiated with γ-irradiation by Cobalt-60 as an irradiation source at different doses (0, 5, 10, 15, 20, 25 and 30kGy) as an effective method for sterilization, pasteurization and food decontamination, considered as safe method , and stored for 12months at room temperature (22±3 0C). The evaluation of irradiation depended on the chemical studies and antioxidant activity of extracted essential oils. Results showed significant difference for the essential oils yield (content %) at different doses during storage time. Compounds were fractionated and identified by GC/MS for extracted essential oils from each of non – irradiated and irradiated dried rosemary leaves and dried clove buds samples, the main components of essential oil extracted from either non-irradiated or irradiated rosemary leaves were 1,8 cineole, camphor and γ-pinene 26.36, 12.63 and 16.98%, respectively, while, eugenol was the major component in clove essential oil (which extracted from non-irradiated and irradiated samples (81.69%). No differences were noticed in the % of essential oils constituents. Antioxidant activity as % of DPPH scavenging increased with the increasing of essential oils concentrations (250 up to 2500ppm). Furthermore, the effect of adding these extracted oils from non-irradiated and irradiated samples as well as their mixture (1:1) on the threshold odor scores of sunflower oil (Mean of acceptable odor levels) was observed. Rancimat test shown the high oxidative stability in sunflower oil supplemented with 0.3% clove essential oil which extracted from 15kGy irradiated sample was 11.99 hrs, its relative stability was 144.11% comparing with the oxidative stability of sunflower oil supplemented with 0.5% rosemary essential oil extracted from non-irradiated sample (9.76hrs) with 117.3% relative stability. Adding different concentrations of rosemary, clove buds essential oils which extracted from different irradiation doses samples and their mixture (1:1) caused slightly increasing in oxidative stability of sunflower oil. |
| first_indexed | 2024-04-25T01:53:55Z |
| format | Article |
| id | doaj.art-28477ee78ba24557bf1664abdf31f222 |
| institution | Directory Open Access Journal |
| issn | 1110-2675 2636-3585 |
| language | Arabic |
| last_indexed | 2024-04-25T01:53:55Z |
| publishDate | 2019-09-01 |
| publisher | The Union of Arab Universities |
| record_format | Article |
| series | Arab Universities Journal of Agricultural Sciences |
| spelling | doaj.art-28477ee78ba24557bf1664abdf31f2222024-03-07T17:36:56ZaraThe Union of Arab UniversitiesArab Universities Journal of Agricultural Sciences1110-26752636-35852019-09-012721459147310.21608/ajs.2019.11310.101159403Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove budsWafaa Shahin0Ahmed Gibriel1Hanan Abdo2Egyptian atomic energy ministerFood science department faculty of agriculture ain shams universityFood science department faculty of agriculture ain shams universityAbstract Dried rosemary leaves (Rosmarinus officinalis Lamiaceae), and dried clove buds (Syzygium aromaticum) were irradiated with γ-irradiation by Cobalt-60 as an irradiation source at different doses (0, 5, 10, 15, 20, 25 and 30kGy) as an effective method for sterilization, pasteurization and food decontamination, considered as safe method , and stored for 12months at room temperature (22±3 0C). The evaluation of irradiation depended on the chemical studies and antioxidant activity of extracted essential oils. Results showed significant difference for the essential oils yield (content %) at different doses during storage time. Compounds were fractionated and identified by GC/MS for extracted essential oils from each of non – irradiated and irradiated dried rosemary leaves and dried clove buds samples, the main components of essential oil extracted from either non-irradiated or irradiated rosemary leaves were 1,8 cineole, camphor and γ-pinene 26.36, 12.63 and 16.98%, respectively, while, eugenol was the major component in clove essential oil (which extracted from non-irradiated and irradiated samples (81.69%). No differences were noticed in the % of essential oils constituents. Antioxidant activity as % of DPPH scavenging increased with the increasing of essential oils concentrations (250 up to 2500ppm). Furthermore, the effect of adding these extracted oils from non-irradiated and irradiated samples as well as their mixture (1:1) on the threshold odor scores of sunflower oil (Mean of acceptable odor levels) was observed. Rancimat test shown the high oxidative stability in sunflower oil supplemented with 0.3% clove essential oil which extracted from 15kGy irradiated sample was 11.99 hrs, its relative stability was 144.11% comparing with the oxidative stability of sunflower oil supplemented with 0.5% rosemary essential oil extracted from non-irradiated sample (9.76hrs) with 117.3% relative stability. Adding different concentrations of rosemary, clove buds essential oils which extracted from different irradiation doses samples and their mixture (1:1) caused slightly increasing in oxidative stability of sunflower oil.https://ajs.journals.ekb.eg/article_59403_cdb7cba0990dcc793539d2bf4aeda211.pdfrosemarycloveirradiationantioxidant activity |
| spellingShingle | Wafaa Shahin Ahmed Gibriel Hanan Abdo Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds Arab Universities Journal of Agricultural Sciences rosemary clove irradiation antioxidant activity |
| title | Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| title_full | Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| title_fullStr | Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| title_full_unstemmed | Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| title_short | Physico-chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| title_sort | physico chemical properties and antioxidant activities of extracted essential oils from irradiated rosemary and clove buds |
| topic | rosemary clove irradiation antioxidant activity |
| url | https://ajs.journals.ekb.eg/article_59403_cdb7cba0990dcc793539d2bf4aeda211.pdf |
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