Увійти

Готові списки джерел за темами / Davanoïde / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Davanoïde.

Статті в журналах з теми "Davanoïde"

Автор: Grafiati

Опубліковано: 1 червня 2022

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-28 статей у журналах для дослідження на тему "Davanoïde".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Bhagavathy, Ganga V., Glory M. Velazquez Nieves, Meiling Z. Webb, and Kamlesh R. Chauhan. "Arthropod Deterrents from Artemisia Pallens (Davana Oil) Components." Natural Product Communications 10, no. 8 (August 2015): 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000802.

Повний текст джерела

Анотація:

Davanone, a key sesquiterpene component of davana oil, has been synthesized in five convenient steps. Oxygenated sesquiterpenes have been linked to insect deterrent properties. Based on initial screening of davana oil, davanone and its hydroxy precursors have been generated and are being evaluated as arthropod deterrents against disease vectors.

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Molander, Gary A., and Julia Haas. "Total synthesis of (±)-davanone." Tetrahedron 55, no. 3 (January 1999): 617–24. http://dx.doi.org/10.1016/s0040-4020(98)01081-3.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Molander, Gary A., and Julia Haas. "ChemInform Abstract: Total Synthesis of (.+-.)-Davanone." ChemInform 30, no. 24 (June 15, 2010): no. http://dx.doi.org/10.1002/chin.199924184.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Judzentiene, Asta, and Rasa Garjonyte. "Compositional Variability and Toxic Activity of Mugwort (Artemisia vulgaris) Essential Oils." Natural Product Communications 11, no. 9 (September 2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100942.

Повний текст джерела

Анотація:

The compositional variability of the essential oils of aerial parts of mugwort ( Artemisia vulgaris L.), collected from fifteen wild populations in Lithuania is detailed. The most predominant components were davanones (13.8-45.5%, six oils), germacrene D (9.1-30.5%, four oils), 1,8-cineole (16.4%, one oil), camphor (18.9%, one oil), trans-thujone (8.9 and 10.9%, two oils) and cis-chrysanthenyl acetate (10.4%, one oil). To the best of our knowledge, the davanone chemotype for A. vulgaris oils is described for the first time. The toxicity of the mugwort essential oils was determined using brine shrimp ( Artemia sp.) assay. LC50 values (10.3-23.1 μg/mL) obtained for the oils after 24 h of exposure revealed that the oils containing appreciable amounts of germacrene D, 1,8-cineole, camphor and davanone were notably toxic.

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Morrison, Karen C., Jonathan P. Litz, Kathryn P. Scherpelz, Paul D. Dossa, and David A. Vosburg. "A Concise, Biomimetic Total Synthesis of (+)-Davanone." Organic Letters 11, no. 10 (May 21, 2009): 2217–18. http://dx.doi.org/10.1021/ol900697w.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Javzmaa, N., Sh Altantsetseg, S. Shatar, T. Enkhjargal, and Z. Anu. "Specific characteristics of essential oils of four Artemisia species from the Mongolian Trans-Altai Gobi." Mongolian Journal of Chemistry 16 (March 22, 2016): 34–38. http://dx.doi.org/10.5564/mjc.v16i0.667.

Повний текст джерела

Анотація:

The essential oil compositions of four Artemisia species in Mongolian Trans-Altai Gobi were studied by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The oil from A.macrocephala Jacq and A.dracunculus Ledeb. were characterized by the presence of monoterpene hydrocarbons and oxygenated monoterpeneoids predominately. E-nerolidol (26.95%), methyleugenol (23.29%) and sabinene (13.21%) were found as main components in the essential oils of A.dracunculus. A.macrocephalla was characterized by the presence of chamazulene (13.8%), cineol (11.7%), myrcene (9.0%), germacrene-D (7.1%). A.anethifolia Web was characterized by the presence of fragrant compounds as camphor (26.05%), α-thujone (10.1%), borneol (5.1%). Davanone and davanone derivatives were also detected in the sample in amount of 7.7% in total. A.scoparia Waldst differed by domination of monoterpene hydrocarbons (78.9%) with (Z)- β-ocimene (29.24%), α-pinene (15.19%), limonene (10.27%) and myrcene (9.61%).Mongolian Journal of Chemistry 16 (42), 2015, 34-38

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Bail, Stefanie, Gerhard Buchbauer, Erich Schmidt, Juergen Wanner, Alexander Slavchev, Albena Stoyanova, Zapriana Denkova, Margit Geissler, and Leopold Jirovetz. "GC-MS-Analysis, Antimicrobial Activities and Olfactory Evaluation of Essential Davana (Artemisia pallens Wall. ex DC) Oil from India." Natural Product Communications 3, no. 7 (July 2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300705.

Повний текст джерела

Анотація:

An essential oil sample of davana (Artemisia pallens Wall. ex DC.) and a fraction thereof were investigated for their chemical composition using GC and GC-MS. cis-Davanone (45.8%), bicyclogermacrene (9.6%), linalool (2.5%), caryophyllene oxide (2.2%) and phytol (2.1%) were found to be the main constituents of the davana oil sample. The main constituents of the fraction were analyzed as cis-davanone (72.2%), davana ether 2° (5.2%) and ( Z)-ethyl cinnamate (5.2%). Antimicrobial activities of the essential oil, the fraction, some major and reference compounds were evaluated against seven strains of bacteria and one yeast using agar diffusion and agar dilution methods. The davana essential oil showed antimicrobial activities against Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella enterica subsp. enterica and the yeast Candida albicans; the davana fraction was effective against all the tested bacteria and yeast except Pseudomonas aeruginosa and Proteus vulgaris. The oil and the fraction were also olfactorially evaluated.

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Catalán, César A. N., Maria del R. Cuenca, James Verghese, M. T. Joy, Alicia B. Gutiérrez, and Werner Herz. "Sesquiterpene ketones related to davanone from Artemisia pallens." Phytochemistry 29, no. 8 (January 1990): 2702–3. http://dx.doi.org/10.1016/0031-9422(90)85220-a.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Sabitha, Gowravaram, M. Prasad, M. Bhikshapathi, and J. Yadav. "Stereospecific Total Synthesis of (+)-Davana Acid, (+)-Nordavanone and (+)-Davanone." Synthesis 2010, no. 05 (December 11, 2009): 807–10. http://dx.doi.org/10.1055/s-0029-1218603.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Vosburg, David, Kanny Wan, Corwyn Evans-Klock, and Brian Fielder. "Synthesis of cis- and trans-Davanoids: Artemone, Hydroxydavanone, Isodavanone, and Nordavanone." Synthesis 45, no. 11 (April 24, 2013): 1541–45. http://dx.doi.org/10.1055/s-0033-1338429.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Vajs, Vlatka, Snezana Trifunovic, Pedja Janackovic, Marina Sokovic, Slobodan Milosavljevic, and Vele Tesevic. "Antifungal activity of davanone-type sesquiterpenes from Artemisia lobelli var. conescens." Journal of the Serbian Chemical Society 69, no. 11 (2004): 969–72. http://dx.doi.org/10.2298/jsc0411969v.

Повний текст джерела

Анотація:

Five tetrahydrofuran sesquiterpenes, so-called davanones, and coumarin umbelliferone isolated from Artemisia lobelii All. var. canescens (DC) Briqu, were tested for antifungal activity. All the compounds inhibited the growth of the applied fungi. The overall activity of one of them 2-hydroxy-2,6,10-trimethyl-7,10-epoxydodeca- 3,11-dien-5-on, was comparable to that of the antibiotic bifonazole.

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Andola, HarishChandra, S. Zafar Haider, and Manindra Mohan. "Constituents of Artemisia indica Willd. from Uttarakhand Himalaya: A source of davanone." Pharmacognosy Research 6, no. 3 (2014): 257. http://dx.doi.org/10.4103/0974-8490.132607.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Sipma, G., and B. van der Wal. "The structure of davanone a new sesquiterpene from davana: (Artemisia pallens, Wall.)." Recueil des Travaux Chimiques des Pays-Bas 87, no. 6 (September 2, 2010): 715–20. http://dx.doi.org/10.1002/recl.19680870613.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Coleman, William Monroe, Michael Frances Dube, Mehdi Ashraf-Khorassani, and Larry Thomas Taylor. "Isomeric Enhancement of Davanone from Natural Davana Oil Aided by Supercritical Carbon Dioxide." Journal of Agricultural and Food Chemistry 55, no. 8 (April 2007): 3037–43. http://dx.doi.org/10.1021/jf062652y.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Honda, Yutaka, Aiichiro Ori, and Gen-ichi Tsuchihashi. "Stereoselective Syntheses of (+)-Davanone and (+)-Artemone via Anti-selective Epoxidation and Iodo-cyclization." Chemistry Letters 16, no. 7 (July 5, 1987): 1259–62. http://dx.doi.org/10.1246/cl.1987.1259.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Nezhadali, A., M. Akbarpour, and B. Zarrabi Shirvan. "Chemical Composition of the Essential Oil From the Aerial Parts ofArtemisia Herba." E-Journal of Chemistry 5, no. 3 (2008): 557–61. http://dx.doi.org/10.1155/2008/730453.

Повний текст джерела

Анотація:

The aerial parts of the plant artemisia herba were collected in the May 2007 from Babaaman (North Khorassan Province of Iran). The plant was isolated by hydro distillation. A total of 61 constituents, representing more than 98% of the oil were identified by gas chromatograph/mass spectrometry (GC/MS). The main compounds, were alpha-pinene (3.28%), champhene (4.8%), sabinen (5.18%), beta-myrcene (3.04), cis,beta-terpineol (11.31%), camphor (6.11%), 8-hydroxylinalool (2.64%), L-4-terpineol ( 2.5%), alpha- therpineol (2.33%), myrtenol (3.27%), bornyl acetate (6.2%), alpha-terpinol acetate (3.06%), germacrene (2.06%), davanone (8.49%), trans-farnesol (4.27%), cis-fernesol (2.07%) and 1,3,dicyclopentyl cyclopentane (2.29%). This herbal medicine traditionally uses as anti-infectious, anti-bacterial, emmenagogue, parasiticide, digestive and stomachic and gastric tonic in Iran.

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Misra, Laxmi N., Amitabh Chandra, and Raghunath S. Thakur. "Transformation of davanone : Reductive cleavage of tetrahydrofuran and thermal cyclization of 1:3-diene." Tetrahedron Letters 30, no. 11 (January 1989): 1437–40. http://dx.doi.org/10.1016/s0040-4039(00)99486-3.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Perez-Alonso, M. J., A. Velasco-Negueruela, J. Palá-Paúl, and J. Sanz. "Variations in the essential oil composition of Artemisia pedemontana gathered in Spain: chemotype camphor-1,8-cineole and chemotype davanone." Biochemical Systematics and Ecology 31, no. 1 (January 2003): 77–84. http://dx.doi.org/10.1016/s0305-1978(02)00082-0.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Jakab, Emma, Zoltán Sebestyén, Bence Babinszki, Eszter Barta-Rajnai, Zsuzsanna Czégény, James Nicol, Peter Clayton, and Chuan Liu. "Thermo-Oxidative Decomposition of Lovage (Levisticum officinale) and Davana (Artemisia pallens) Essential Oils under Simulated Tobacco Heating Product Conditions." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 29, no. 1 (May 23, 2020): 27–43. http://dx.doi.org/10.2478/cttr-2020-0004.

Повний текст джерела

Анотація:

SummaryThe thermo-oxidative decomposition of lovage (Levisticum officinale) and davana (Artemisia pallens) essential oils has been studied by pyrolysis-gas chromatography/mass spectrometry in 9% oxygen and 91% nitrogen atmosphere at 300 °C to simulate low-temperature tobacco heating conditions. Both lovage and davana oils contain numerous chemical substances; the main components of both oils are various oxygen-containing compounds. Isobenzofuranones are the most important constituents of lovage oil, and their relative intensity changed significantly during oxidative pyrolysis. (Z)-ligustilide underwent two kinds of decomposition reactions: an aromatization reaction resulting in the formation of butylidenephthalide and the scission of the lactone ring with the elimination of carbon dioxide or carbon monoxide. Davanone is the main component of davana oil, which did not decompose considerably during low-temperature oxidative pyrolysis. However, the relative yield of the second most intensive component, bicyclogermacrene, reduced markedly due to bond rearrangement reactions. Davana ether underwent oxidation reactions leading to the formation of various furanic compounds. The changes in the composition of both essential oils could be interpreted in terms of bond splitting, intramolecular rearrangement mechanisms and oxidation reactions of several constituents during low-temperature oxidative pyrolysis. The applied thermo-oxidative method was found to be suitable to study the stability of the essential oils and monitor the decomposition products under simulated tobacco heating conditions. In spite of the complicated composition of the essential oils, no evidence for interaction between the oil components was found. [Beitr. Tabakforsch. Int. 29 (2020) 27–43]

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Sembiring, Yulia Shara, and Cut Fatimah Zuhra. "Analysis of Chemical Components and Antibacterial Activity in Essential Oil of Lantana Flowers (Lantana Camara L)." Biomedika 14, no. 1 (March 31, 2021): 19–28. http://dx.doi.org/10.31001/biomedika.v14i1.1164.

Повний текст джерела

Анотація:

The purpose of this study was to evaluate the essential oil composition as well as antibacterial activities of essential oil of Lantana camara L flowers against four bacterial strains. Essential oil of Lantana camara L flowers was obtained by hydrodistillation method using Sthal and analyzed by GC-MS. The antibacterial activities of essential oil were tested by using disk diffusion method against four bacterial strains. Results showed 72 compounds for Lantana flowers essential oil, of which caryophyllene (10,87%), davanone (9.84%), a-humulene (7.59%), a-curcumene (3.35%), germacrene D (3.09%), calarene (2.42%), a-muurolene (2.27%), p-cymene (1.79%), 1,8 cineole (1.59%) , δ-cadinene (1.59%), a-copaene (1.12%), nerolidol B (1%) and ß-ocimene (0.54%) were detected as major components. Antibacterial activity assay of Lantana camara L flowers essential oil was examined against four bacterial strains including Gram (+and-) by using disk diffusion agar method. All the tested Gram (+and-) bacterial strains displayed slight to moderate antibacterial activity (7 – 10 mm) against all concentrations of essential oil. The essential oil of Lantana camara L flowers showed remarkable antibacterial activity with inhibition in concentrations of 10% and 20% against the phatogen bacterias Basillus subtilis (9.6 mm; 10.8 mm), Propionibacterium acnes ( 7.6 mm; 8.7 mm), Eschechia coli ( 8.4 mm ; 9.6 mm) and Pseudomonas aeruginosa ( 8.3 mm ; 9.3 mm) showed from zone of inhibition that was formed, zone of inhibition in concentration 20% was bigger than concentration 10%.

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Cheraif, Kadour, Boulanouar Bakchiche, Abdelaziz Gherib, Sanaa K. Bardaweel, Melek Çol Ayvaz, Guido Flamini, Roberta Ascrizzi, and Mosad A. Ghareeb. "Chemical Composition, Antioxidant, Anti-Tyrosinase, Anti-Cholinesterase and Cytotoxic Activities of Essential Oils of Six Algerian Plants." Molecules 25, no. 7 (April 8, 2020): 1710. http://dx.doi.org/10.3390/molecules25071710.

Повний текст джерела

Анотація:

In this study, the essential oils (EOs) of six Algerian plants (Artemisia campestris L., Artemisia herba-alba Asso, Juniperus phoenicea L., Juniperus oxycedrus L., Mentha pulegium L. and Lavandula officinalis Chaix) were obtained by hydrodistillation, and their compositions determined by GC-MS and GC-FID. The antioxidant activity of the EOS was evaluated via 2,2′-diphenyl-1-picrylhydrazyl (DPPH), ferric-reducing/antioxidant power (FRAP) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS) assays. Moreover, their cytotoxic effect was evaluated—as well as their tyrosinase, acetyl- and butyryl-cholinesterase (AChE and BuChE) inhibitory activities. The chemical analyses detected 44, 45, 51, 53, 26 and 40 compounds in EOs of A. campestris, A. herba-alba, J. phoenicea, J. oxycedrus, M. pulegium and L. officinalis, respectively. A. campestris EO was mainly composed of β-pinene (20.7%), while A. herba-alba EO contained davanone D (49.5%) as the main component. α-Pinene (41.8%) was detected as the major constituent in both J. phoenicea (41.8%) and J. oxycedrus (37.8%) EOs. M. pulegium EO was characterized by pulegone as the most abundant (76.9%) compound, while linalool (35.8%) was detected as a major constituent in L. officinalis EO. The antioxidant power evaluation revealed IC50 values ranging from 2.61 to 91.25 mg/mL for DPPH scavenging activity, while the FRAP values ranged from 0.97–8.17 µmol Trolox equivalents (TX)/g sample. In the ABTS assay, the values ranged from 7.01 to 2.40 µmol TX/g sample. In the presence of 1 mg/mL of the samples, tyrosinase inhibition rates ranged from 11.35% to 39.65%, AChE inhibition rates ranged from 40.57% to 73.60% and BuChE inhibition rates ranged from 6.47% to 72.03%. A significant cytotoxic effect was found for A. herba-alba EO. The obtained results support some of the traditional uses of these species in food preservation and for protection against several diseases.

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Mohammed, Hamdoon A. "Phytochemical Analysis, Antioxidant Potential, and Cytotoxicity Evaluation of Traditionally Used Artemisia absinthium L. (Wormwood) Growing in the Central Region of Saudi Arabia." Plants 11, no. 8 (April 9, 2022): 1028. http://dx.doi.org/10.3390/plants11081028.

Повний текст джерела

Анотація:

Artemisia absinthium, a plant distributed worldwide, has been reported for its numerous traditional uses, and its phytoconstituents have been investigated in several previous publications. The current study was designed to investigate the chemistry and quality; i.e., the antioxidant and cytotoxic activities, of A. absinthium volatile oil from plant species growing in the central area of Saudi Arabia compared to reported data for the plant growing in other parts of the world. Gas chromatography–mass spectrometry (GC-MS) and gas chromatography with flame ionization detector (GC-FID) spectroscopic analyses, in addition to in vitro antioxidant and cytotoxic assays, were conducted to fulfill the aims, and integrated the study’s conclusion. A total of 34 compounds representing 99.98% of the essential oil of the plant were identified; among them, cis-davanone was found at the highest concentration (52.51%) compared to the other constituents. In addition, α-gurjunene (7.15%), chamazulene (3.38%), camphene (3.27), γ-eudesmol (2.49%), pinocarvone (2.18%), and ocimenone (2.03%) were also identified as major constituents of the plant’s essential oil. The total percentage of davanones (53%) was the highest percentage found in the plant species growing elsewhere in the world. The antioxidant assays; i.e., the total antioxidant capacity (TAC), ferric-reducing antioxidant power (FRAP), and 2,2-diphenyl-1-picrylhydrazyl-scavenging activity (DPPH-SA), evidenced the potential in vitro antioxidant activity of the A. absinthium essential oil, with 35.59, 10.54, and 24.00 mg Trolox equivalent per gram of the essential oil. In addition, the metal-cheating activity (MCA) of the essential oil was measured at 29.87 mg ethylenediaminetetraacetic acid (EDTA) equivalent per gram of the essential oil. Moreover, a limited cytotoxic effect of the essential oil against all tested cell lines was observed, which might be considered as an indicator of the safety of A. absinthium as a worldwide edible plant. In conclusion, the study confirmed the variations in the A. absinthium essential oil constituents in response to the environmental conditions. The study also highlighted the potential health benefits of the plant’s essential oil as an antioxidant agent.

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Semaoui, Mohammed, Fouzia Mesli, Mohammed El Amine Dib, Boufeldja Tabti, Radja Achiri, Jean Costa, and Alain Muselli. "Statistical analysis/theoretical investigations of novel vascular endothelial growth factor of Davanoide from Scolymus grandifloras Desf as potent anti-angiogenic drug properties." Journal of Biomolecular Structure and Dynamics, December 2, 2020, 1–20. http://dx.doi.org/10.1080/07391102.2020.1851301.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

24

HONDA, Y., A. ORI, and G. TSUCHIHASHI. "ChemInform Abstract: Stereoselective Syntheses of (+)-Davanone (Ia) and (+)-Artemone (Ib) via anti-Selective Epoxidation and Iodo-Cyclization." ChemInform 19, no. 5 (February 2, 1988). http://dx.doi.org/10.1002/chin.198805327.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Dahmani-Hamzaoui, N., N. Sabaou, and A. Baaliouamer. "Variabilité infraspécifique de l’Artemisia herba-alba d’Algérie." Phytothérapie, 2021. http://dx.doi.org/10.3166/phyto-2021-0275.

Повний текст джерела

Анотація:

L’étude analytique des huiles essentielles d’Artemisia herba-alba poussant en Algérie a mis en évidence une différence remarquable dans la composition chimique et les rendements d’extraction selon les régions (position géographique) et les techniques d’extraction utilisées. L’analyse des huiles essentielles par CG et par CG-SM nous a permis d’identifier 164 constituants, représentant 65,2 à 98,3 % de la composition totale pour l’hydrodistillation et 61,4 à 95,6 % pour la micro-onde. Les composés cétoniques : tels que l’α- thujone, la β-thujone, le camphre, la chrysanthénone et la davanone en constituent la majeure partie. Cette étude nous a permis de confirmer la diversité des chémotypes dont l’existence serait étroitement liée à des variations de patrimoines génétiques. Par rapport à HD,MD permet d’obtenir de l’huile en très peu de temps, avec des qualités comparables et des économies d’énergie substantielles. L’étude de l’activité antimicrobienne des huiles essentielles sur 14 souches a montré un très bon pouvoir inhibiteur (concentration minimale inhibitrice ne dépassant pas 10 mg/ml) pour tous les échantillons. La faible activité antioxydante de ces huiles pourrait être attribuée à l’absence de certains composants phénoliques.

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Ed-Dra, Abdelaziz, Fouzia Rhazi Filali, Vittorio Lo Presti, Badr Zekkori, Luca Nalbone, Eman Ramadan Elsharkawy, Amar Bentayeb, and Filippo Giarratana. "Effectiveness of essential oil from the Artemisia herba-alba aerial parts against multidrug-resistant bacteria isolated from food and hospitalized patients." Biodiversitas Journal of Biological Diversity 22, no. 7 (July 3, 2021). http://dx.doi.org/10.13057/biodiv/d220753.

Повний текст джерела

Анотація:

Abstract. Ed-Dra A, Filali FR, Presti VL, Zekkori B, Nalbone L, Elsharkawy ER, Bentayeb A, Giarrtana F. 2021. Effectiveness of essential oil from the Artemisia herba-alba aerial parts against multidrug-resistant bacteria isolated from food and hospitalized patients. Biodiversitas 22: 2995-3005. The World Health Organization has sounded the warning on the diffusion of multidrug resistance (MDR) bacteria, requiring solutions and alternatives to solve the therapeutic failure that may occur. This study aims to evaluate the antioxidant activity and bactericidal effectiveness against MDR bacteria of Artemisia herba-alba essential oil (A-EO) collected from semi-arid region of Morocco. Chemical composition of the A-EO was determined by Gas Chromatography-Flame Ionisation Detector and Gas Chromatography-Mass Spectrometry, while the antioxidant activity was performed by DPPH scavenging activity and ?-carotene bleaching assay. Antibacterial activity of A-EO, performed by disc diffusion assay and broth dilution method, was tested against: four MDR strains (Escherichia coli, Staphylococcus aureus, Salmonella Typhimurium and Enterococcus faecalis) isolated from food matrices, two (Klebsiella pneumonia and Pseudomonas aeruginosa) from hospitalized patients, and Escherichia coli ATCC 25922 as reference strain. Davanone was the main compound among the 17 identified. An antioxidant activity with IC50 of 1.13±0.02 mg/mL, EC50 of 2.12±0.05 mg/mL and RC50 of 0.87±0.02 mg/mL was observed. A weak activity against P. aeruginosa was observed, while it was intermediate or high against the other bacteria. This study confirms that A-EO could be a suitable alternative to antibiotics in the infection treatment related to MDR bacteria.

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Héthelyi, É. B., L. Gy Szabó, and K. Korány. "Volatile constituents of Nepeta cataria L., N. glechoma Benth. and N. parviflora M. Bieb. from Hungary." International Journal of Horticultural Science 7, no. 2 (June 6, 2001). http://dx.doi.org/10.31421/ijhs/7/2/265.

Повний текст джерела

Анотація:

In the temperate zone live about 150 species of the Nepeta genus. Our investigations covered the examinations of the volatile oil containing species of the genus endemic in Hungary, Nepeta cataria and Nepeta parviflora. Latter is a relict of the ancient steppe-flora and endemic in Hungary as well. Phytochemical examination of the volatile oil containing plant material has also been carried out. Catnip growing in the Botanical Garden of PTE Department of Botany contained 0,67% volatile oil in May and 0,14% in November. Chemical character of the volatile oils were measured by gas chromatography/mass spectrometry and citronellol, citral-A, citral-B and geraniol components were identified. The composition of the oil of November samples shifted towards citronellol (65%). In both samples insecticide and repellent activity bearing compounds (+)-cis-p-menthane-3,8-diol, and (—)-trans-p-menthane-3,8-diol in 2-2.5 and 4-4.5% amount have been found. The catnip sample deriving from Germany contained a small amount of anetol, citronellol, neral, geraniol and geranial (6-13%), and possibly two isomers of nepetalactone in 23-31%. The Nepeta parviflora endemic in the Nagyvolgy valley near Nagykaracsony consisted of the same compounds in the investigated years (1998-2000). Its limonene, methyl chavicol, b-cariophyllene, b-selinene, b-cubebene, davanone, germacrene-D constituents have been identified. In the year 2000 different GC % of these compounds were detected in the different organs of the plants. The closely related species Nepeta cataria var. citriodora contained 83% citral, and the N. glechoma (= Glechoma hederacea) contained 41% a-cubebene, 20% patchoulenol, 7,7% spathulenol respectively. These compounds were identified by gas chromatography and gas chromatography / mass spectrometry.

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Singh, Swati, Divya Bhatt, Munmun Kumar Singh, Velusamy Sundaresan, Sudeep Tandon, Rajendra Chandra Padalia, Dnyaneshwar Umrao Bawankule, and Ram Swaroop Verma. "New Insights into the Chemical Composition, Pro‐Inflammatory Cytokine Inhibition Profile of Davana ( Artemisia pallens Wall. ex DC.) Essential Oil and cis‐ Davanone in Primary Macrophage Cells." Chemistry & Biodiversity 18, no. 11 (October 20, 2021). http://dx.doi.org/10.1002/cbdv.202100531.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!