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    Tytuł:
    Effect of chemical modification of hydrodistillation on yield, composition and biological activity of Rosmarinus officinalis essential oil
    Autorzy:
    Dzięcioł, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1849323.pdf
    Data publikacji:
    2021
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Rosmarinus officinalis essential oil
    chemical modification of hydrodistillation
    antioxidant activity
    fungicidal activity
    Opis:
    Studies on the chemical modifications of Rosmarinus officinalis essential oil hydrodistillation process (HD) by using 5% citric acid (CA-HD) and 5% trisodium citrate (TSC-HD) ase water phase were performed. Composition of essential oils obtained in conventional and modified conditions was analyzed by gas chromatography with mass selective detector method (GC-MS) and compared. Antioxidant activity of all essential oils was determined spectrophotometrically by using DPPH radical scavenging method. It was found that applied modifications of hydrodistillation process enhanced yields and antioxidant activity and the best results were obtained using 5% citric acid as a modifier. Effect of this modification on fungicidal activity of essential oils against 8 various fungi strains (Alternaria alternata, Botrytis cinerea, Fusarium culmorum, Phythophtora cactorum, Rhizoctonia solani, Phythophtora infestans, Sclerotinia sclerotiorum and Ascosphaera apis) was also determined and in most cases enhanced activity was observed.
    Źródło:
    Polish Journal of Chemical Technology; 2021, 23, 3; 49-53
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of enzymatic pretreatment on yield and chemical composition of Rosmarinus officinalis essential oil
    Autorzy:
    Dzięcioł, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/2174831.pdf
    Data publikacji:
    2022
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Rosmarinus officinalis essential oil
    Rosmarinus officinalis hydrolate
    modification of hydrodistillation
    enzymatic pretreatment
    total phenolic content (TPC)
    Opis:
    Effect of enzymatic pretreatment before hydrodistillation process on yield and composition of Rosmarinus officinalis essential oil was studied. Results obtained by using two selected commercial enzymes applied in food and beverage industry were compared. Control process with non-enzymatic pretreatment in analogous conditions was also performed for proper interpretation of results. Application of gas chromatography with mass selective detector (GC-MS) enabled analysis and comparison of essential oils composition. Moreover, total phenolic content (TPC) was determined spectrophotometrically in post-processing hydrolates, which are also valuable products e.g. for cosmetic applications. Modifications of isolation process by pretreatment with selected enzymes resulted in significant increase in essential oil yields in comparison to conventional hydrodistillation and control process with non-enzymatic pretreatment in analogous conditions. No substantial changes in the composition of obtained essential oils were observed. In post-processing hydrolates higher values of total phenolic content (TPC) were found both after enzymatic and non-enzymatic pretreatment.
    Źródło:
    Polish Journal of Chemical Technology; 2022, 24, 4; 61--66
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemical Composition and Antimicrobial Activity of Essential Oil of Wild and Cultivated Rosmarinus Officinalis from Two Moroccan Localities
    Autorzy:
    Elyemni, Majda
    El Ouadrhiri, Faiçal
    Lahkimi, Amal
    Elkamli, Taha
    Bouia, Abdelhak
    Eloutassi, Noureddine
    Powiązania:
    https://bibliotekanauki.pl/articles/2068472.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    essential oil
    Rosmarinus officinalis
    antimicrobial activity
    chemotype
    Opis:
    This research aimed to measure the impact of provenance on the yield, chemical profile and antimicrobial activity of Rosmarinus officinalis essential oil (EO) collected from cultivated and wild plants from two different regions in Morocco (Fez and Figuig). The chemical composition analysis was accomplished utilizing the GC-MS techniques. Sixteen compounds were identified in the EO of both samples, dominated by 1,8-cineole (32.18%), camphor (16.20%) and α-pinene (15.40%) in cultivated type. The α-pinene (51.19) presents the majority compound in the rosemary samples collected from the wild populations.The antimicrobial activity was investigated by using the broth dilution methods against yeast, four bacterial strains and two molds. Rosemary aerial part provided EO with the highest yield and comes from Figuig. The GC-MS analysis demonstrated the existence of two chemotypes of oils: α-pinene as well as 1,8-cineole/camphor/α-pinene. Both EOs showed good antimicrobial activity against all microbial strains. The essential oil produced by Fez plants was the most effective against the selected microorganisms having MIC values of 0.315–2.5 mg/L.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 3; 214--222
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Water Stress and Temperature on Metabolites and Essential Oil of Rosmarinus officinalis (Phytochemical Screening, Extraction, and Gas Chromatography)
    Autorzy:
    Laftouhi, Abdelouahid
    Eloutassi, Noureddine
    Drioua, Soufiane
    Ech-Chihbi, Elhachmia
    Rais, Zakia
    Abdellaoui, Abdelfattah
    Taleb, Abdslam
    Beniken, Mustapha
    Taleb, Mustapha
    Powiązania:
    https://bibliotekanauki.pl/articles/24201782.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    climate change
    primary metabolites
    secondary metabolites
    essential oil yield
    Rosmarinus officinalis
    Opis:
    Currently, climate change is disrupting life on Earth by causing imbalances in the biosphere. This work aimed to evaluate the impact of climate change on the content of primary and secondary metabolites and the yield of essential oil of Rosmarinus officinalis. Thus, the results of the conducted experiment show that the content of primary metabolites decreased with increasing temperature and decreasing precipitation along the experiment(proteins from 7.61% to 7.14%, carbohydrates from 6.92% to 5.64%, fats from 1.48% to 1.29% and dietary fiber from 4.96% to 4.22% and mineral composition: Ca from 7.67% to 5.98%, Mg from 8.61% to 7.01%, Fe from 7.53% to 7.21% and Mn from 6.85% to 3.97%), and the content of secondary metabolites increased in the second year when increasing the temperature by 5 °C and water stress by 50% (coumarin from 6.59% to 10.99%, saponins from 7.15% to 8.46%, tannin from 3.92% to 5.95%, alkaloids from 6.69% to 15.62% and flavonoid from 8.02% to 15.75%),but in the fourth year when the temperature continued to increase and water stress was 75% the content of secondary metabolites decreased (coumarin from 10.99% to 8.27%, saponins from 8.46% to 7.87%, tannin from 5.95% to 4.85%, alkaloids from 15.62% to 10.68% and flavonoid from 15.75% to 11.36%)and the same results were obtained for the yield of essential oil which increased in the second year and decreased in the fourth year. This GC analysis of the three essential oil samples shows that the majority of compounds in the three essential oils studied are cineole (S1:45.98%, S2:55.36%, S3:43.08%) followed by camphor (S1:17.44%, S2:21.44%, S3:21.56%) and Alpha-pinene (S1:9.30%, S2:8.34%, S3: 9.17%) and other compounds in low percentage.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 5; 237--248
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Secretory structures and essential oil composition of selected industrial species of Lamiaceae
    Autorzy:
    Kowalski, R.
    Kowalska, G.
    Jankowska, M.
    Nawrocka, A.
    Kałwa, K.
    Pankiewicz, U.
    Włodarczyk-Stasiak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/12301246.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    Lamiaceae
    lemon balm
    marjoram
    Origanum majorana
    Melissa officinalis
    peppermint
    Mentha piperita
    rosemary
    Rosmarinus officinalis
    sage
    Salvia officinalis
    common thyme
    Thymus vulgaris
    herbal plant
    medicinal plant
    industrial plant
    micromorphographic analysis
    secretory structure
    essential oil
    glandular trichome
    medicinal property
    Opis:
    The objective of the study was to perform micromorphological analyses of the secretory structures of leaves and stems of oil-bearing industrial plants from the Lamiaceae family such as lemon balm (Melissa officinalis L.), peppermint (Mentha × piperita L.), sage (Salvia officinalis L.), marjoram (Origanum majorana L., syn. Origanum dubium Boiss.), rosemary (Rosmarinus officinalis L.) and common thyme (Thymus vulgaris L.) using light microscope and scanning electron microscope. In addition, an estimation of the content of volatile substances in the plant species under study was performed using GC-MS, as well as the qualitative and quantitative analysis of essential oil, that is an important component in terms of the estimation of raw material applicability for use in the industry. In the epidermal cells of studied plants, 2 types of Lamiaceae-type glandular trichomes were identified: short- and long-stalked capitate glandular trichomes with single- and bicellular secretory capitulum, and peltate glandular trichomes with eight- and over a dozen-cell secretory capitulum. Capitate trichomes were densely distributed on the surface of the epidermis, while peltate trichomes were sparse, though regular, and were situated in depressions. Glandular trichomes were found more frequently on leaves than on stems. The cuticle of the abaxial of leaf was characterized in most cases by the occurrence of larger average diameter peltate trichomes compared to the cuticle of the adaxial side of leaf. Peppermint produced the largest structures accumulating essential oil on the leaves (average diameter of peltate trichomes – 78.48 µm on the adaxial side of leaf, up to 96.43 µm), while on the stem, the highest average diameter of the peltate trichomes was observed in sage (an average of 75.53 µm, up to 85.99 µm). The lemon balm was characterized by the presence of capitate and peltate trichomes with the smallest diameter (an average of 44.26 µm). Lemon balm was characterized by the greatest density of glandular trichomes compared to other plant species. Among the plants studied, the highest content of oil was noted in the case of thyme and peppermint (2.22% and 2.20% v/w, respectively), and the lowest in green parts of lemon balm (0.17% v/w). The isolated essential oils contained predominantly components from the groups of monoterpenes and sesquiterpenes, and it is the presence of those substances that determines the possibility of utilizing the plants studied for a variety of purposes.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 53-69
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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