scholarly journals A first report of a new chemotype of Thymus migricus (Klokov & Desj-Shost) from East Azarbaijan province of Iran

2016 ◽  
Vol 61 (2) ◽  
pp. 163-169
Author(s):  
Yousef Dizajeyekan ◽  
Ahmad Haghighi ◽  
Rasoul Rangavaran
Keyword(s):  
Essential Oils ◽  
Volatile Compounds ◽  
Sodium Sulfate ◽  
Room Temperature ◽  
Anhydrous Sodium Sulfate ◽  
Geranyl Acetate ◽  
Northwestern Iran ◽  
East Azerbaijan ◽  
Total Oil ◽  
First Time

In order to determine Thymus migricus volatile compounds, sampling from two regions of East Azerbaijan province located in Northwestern Iran was performed. After drying the samples at room temperature, the essential oils were taken by the hydrodistillation method for 2.5 hours. The essential oils were dehydrated over anhydrous sodium sulfate. Compositions of the oils were identified by GC and GC-MS analyses. The eleven and nine identified compounds from Mishoo and Espiran regions represent 94.62% and 86.08% total oil compositions, respectively. In Mishoo, the percentages of main compounds included linalool (65.57%), citronellol (15.63%) and geraniol (2.79%) and in Espiran, there were linalool (46.36%), geraniol (26.74%), and geranyl acetate (6.17%). The present chemotype of this species is reported for the first time in East Azarbaijan, Iran.

scholarly journals Composition of Seed Essential Oils of Rhododendron tomentosum

2012 ◽  
Vol 7 (2) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Asta Judzentiene ◽  
Rita Butkiene ◽  
Jurga Budiene ◽  
Félix Tomi ◽  
Joseph Casanova
Keyword(s):  
Quantitative Analysis ◽  
Chemical Composition ◽  
Nmr Spectroscopy ◽  
Essential Oil ◽  
Essential Oils ◽  
Thermal Isomerization ◽  
Total Oil ◽  
First Time ◽  
Rhododendron Tomentosum ◽  
C Nmr

For the first time, the chemical composition of the seed essential oil of Rhododendron tomentosum was determined. Forty-seven compounds were identified, comprising 91.7% of the total oil. Palustrol (38.3%) and ledol (27.0%) were the predominant constituents. Some constituents, such as β-pinene oxide, iso-menthyl acetate, nerolidyl acetate, cadalene and guaiazulene were characteristic only for the seeds and were identified for the first time in Rh. tomentosum oils. For comparison purposes, the essential oil isolated from the shoots of the same plant were analyzed [GC(FID) in combination with RIs, GC-MS and 13C NMR]. More than a half of the oil was comprised of ledol (36.5%) and palustrol (21.0%). Quantitative analysis of ascaridol, a heat-sensitive compound, was carried out by 13C NMR spectroscopy. Indeed, ascaridol undergoes partial thermal isomerization to iso-ascaridol during GC analyses.

Similarities and peculiarities between the crystal structures of the hydrates of sodium sulfate and selenate

2014 ◽  
Vol 70 (4) ◽  
pp. 714-722 ◽  
Author(s):  
Stoyan Kamburov ◽  
Horst Schmidt ◽  
Wolfgang Voigt ◽  
Christo Balarew
Keyword(s):  
Temperature Dependence ◽  
Crystal Structures ◽  
Sodium Sulfate ◽  
Room Temperature ◽  
Site Occupancy ◽  
Monoclinic Space Group ◽  
Chemical Compositions ◽  
Crystal Nucleus ◽  
Space Group ◽  
First Time

The crystal structures of the two hydrates Na2SeO4·10H2O and Na2SeO4·7.5H2O are studied for the first time. The structures of Na2SO4·10H2O and Na2SO4·7H2O are reinvestigated as a function of temperature with respect to the degree of disorder of the O atoms of {\rm SO}_{4}^{2-} in the decahydrate and the O atom of water in the heptahydrate. For Na2SO4·10H2O, the unit site occupancy factor (SOF) of O atoms of {\rm SO}_{4}^{2-} was determined at 120 K. After the temperature dependence of the lattice parameters was studied from 120 to 260 K, it was shown that SOF decreased from 1.0 at 120 K to 0.247 at room temperature. The interesting fact that two salts with different chemical compositions and different crystal structures (Na2SO4·7H2O, tetragonal, space groupP41212 and Na2SeO4·7.5H2O, monoclinic, space groupC2/c) can act mutually as a crystal nucleus is accounted for by similarities in certain fragments of their crystal structures. This phenomenon is attributed to similarities between particular elements of their structures.

scholarly journals Chemical Composition of the Essential Oils From Leaves and Flowers of Passiflora sexocellata and Passiflora trifasciata

2021 ◽  
Vol 16 (4) ◽  
pp. 1934578X2110076
Author(s):  
Francesco Saverio Robustelli della Cuna ◽  
Annalisa Giovannini ◽  
Luca Braglia ◽  
Cristina Sottani ◽  
Elena Grignani ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Organic Acids ◽  
Essential Oils ◽  
Steam Distillation ◽  
Analytical Procedure ◽  
Critical Role ◽  
Volatile Fraction ◽  
Oil Composition ◽  
Total Oil ◽  
First Time

The chemical composition of the essential oils of Passiflora sexocellata and Passiflora trifasciata (Passifloraceae, subgenus Decaloba) were studied for the first time. Essential oils were obtained by steam distillation of fresh leaves and flowers. The chemical composition was assessed by using GC/FID and GC/MS. For P. sexocellata leaves, the optimized analytical procedure allowed the identification of 33 compounds (75% of the total oil composition) and 29 (74% of the total oil composition) in flowers. Regarding P. trifasciata, 35 compounds (76% of the total oil composition) were detected in leaves and 32 (71% of the total oil composition) in flowers. Terpenes and mono unsaturated hydrocarbons were quantified as major constituents of the volatile fraction in flowers (17.0 to 52.6%) and (13.7 to 20.0%). Organic acids were detected in both leaves and flowers with a percentage ranging from 3.3% to 32.0%. Aldehydes were also detected in leaves (12.6 to 41.4%) and in flowers (1.4 to 5.1%). The GC/MS analyzes allowed alcohols to be detected in leaves (20.6 to 42.9%) and in flowers (8.2 to 18.1%). These compounds represent the most important feature of the large Passiflora family. Moreover, a critical role in the coevolved mechanisms of pollinators' interaction has been investigated.

scholarly journals The essential oil composition of selected Hemerocallis cultivars and their biological activity

2019 ◽  
Vol 17 (1) ◽  
pp. 1412-1422 ◽  
Author(s):  
Katarzyna Szewczyk ◽  
Danuta Kalemba ◽  
Małgorzata Miazga-Karska ◽  
Barbara Krzemińska ◽  
Agnieszka Dąbrowska ◽  
...  
Keyword(s):  
Biological Activity ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Antioxidant Activities ◽  
Essential Oil Composition ◽  
Model Systems ◽  
Oil Composition ◽  
Eastern Asia ◽  
Aerial Parts ◽  
First Time

AbstractThe horticultural cultivars of Hemerocallis (daylily) have been used to treat diseases such as insomnia, inflammation and depression, and also as a vegetable in eastern Asia. Taking into consideration the fact, that the volatile compounds in Hemerocallis cultivars have not been investigated to date, we decided to study the composition of the essential oils (EOs) from the aerial parts of ten varieties collecting in Poland. EOs, obtained by hydrodistillation, were analyzed by GC/MS method that resulted in identification of 23-36 volatile compounds comprising 89.5%–96.3% of the total amount. The essential oils differed in their composition and they can be classified into three groups. The antibacterial and antioxidant activities of EOs were also evaluated. Gram-negative strains were most strongly inhibited by all tested oils. Two model systems have been used for the antioxidant efficacy, 2,2-diphenyl-1-picryl-hydrazyl (DPPH•) andβ-carotene bleaching assays. The essential oils with the high presence of oxygenated monoterpenes and monoterpene hydrocarbons showed higher antioxidant activity. The chemical composition of EOs of Hemerocallis cultivars and their biological activity is reported for the first time. Thus, the findings presented here suggest that the aerial parts of Hemerocallis cultivars may be candidates for the development of new phytomedicine.

scholarly journals Constituents of Essential Oils from Dasymaschalon bachmaensis and Phaeanthus vietnamensis

2018 ◽  
Vol 13 (5) ◽  
pp. 1934578X1801300
Author(s):  
Le T. Huong ◽  
Dao T.M. Chau ◽  
Ly N. Sam ◽  
Tran D. Thang ◽  
Do N. Dai ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Chemical Constituents ◽  
Benzyl Benzoate ◽  
Volatile Constituents ◽  
Leaf Oil ◽  
First Time

The present paper reports the volatile compounds identified in the essential oils of Dasymaschalon bachmaensis N.S. Lý, T.H. Lê, T.B. Vương & N.Đ.Đỗ and Phaeanthus vietnamensis Bân (Annonanceae) grown in Vietnam. The essential oils were obtained by hydrodistillation from the leaf, stem and bark of the plants. The combined techniques of gas chromatography (GC) and gas chromatography coupled to mass spectrometry (GC-MS) were used for the analysis of the chemical constituents of the oil samples. The major constituents of the leaf oil of D. bachmaensis were limonene (25.7%), eugenol (11.5%), α-phellandrene (11.3%) and benzyl benzoate (9.0%) while the stem contained benzyl benzoate (35.3%), ( Z)-13-docosenamide (12.4%) and limonene (9.4%) In addition, ( Z)-13-docosenamide (23.2%), limonene (25.3%) and α-phellandrene (11.5%) were present in the bark. However, limonene (31.8%), ( Z)-9-octadecamide (20.2%) and α-phellandrene (13.8%) were the compounds occurring in higher amount in the leaf oil of P. vietnamensis while the bark was dominated by ( Z)-9-octadecamide (57.4%) and benzyl benzoate (15.0%). The volatile constituents of both D. bachmaensis and P. vietnamensis are reported for the first time

scholarly journals Chemical Composition, Antimicrobial and Anti-inflammatory Activity of Algerian Juniperus phoenicea Essential Oils

2018 ◽  
Vol 13 (2) ◽  
pp. 1934578X1801300
Author(s):  
Wafae Abdelli ◽  
Fouad Bahri ◽  
Martina Höferl ◽  
Juergen Wanner ◽  
Erich Schmidt ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Acute Toxicity ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Steam Distillation ◽  
Paw Edema ◽  
Juniperus Phoenicea ◽  
Anti Inflammatory ◽  
Total Oil

The essential oils (EOs) obtained by steam distillation from the leaves and the berries of Juniperus phoenicea L., harvested in northwest of Algeria were analyzed and their antimicrobial and anti-inflammatory activities were assessed. 63, 46 and 78 volatile compounds were identified by GC-FID and GC-MS from fresh leaves, dried leaves and berries representing 98.1%, 98.3% and 96.4% of the total oil, respectively. The fresh and dried leaves oils were mainly composed of β-phellandrene (43.9% / 44.9%), α-pinene (25.1% / 20.3%), myrcene (8.5% / 8.2%), α-phellandrene (4.7% / 4.5%) p -cymene (2.7%-3.0%) and limonene (2.3%-2.5%) whereas, the berries oil was mainly composed of α-pinene (43.7%), p -cymene (5.8%), β-phellandrene (4.6%), α-terpineol (4.3%) and α-campholenal (4.0%). The study of the antimicrobial activity showed that the 3 EOs were effective only on B. cereus ATCC 10876 and C. albicans ATCC 10231. No signs of acute toxicity have been noted in mice even at the highest dose tested (5000 mg/kg p.o). The fresh leaves, dried leaves and berries oils reduced the carrageenan-induced paw edema in mice by 16.8%, 15.2% and 6.4%, respectively, after 6 hours at a dose of 400 mg/kg p.o.

scholarly journals Discovering Penicillium polinicum with High-Lytic Capacity on Helianthus tuberosus Tubers: Oil-Based Preservation for Mold Management

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 413
Author(s):  
Abdulaziz A. Al-Askar ◽  
Ehsan M. Rashad ◽  
Khalid M. Ghoneem ◽  
Ashraf A. Mostafa ◽  
Fatimah O. Al-Otibi ◽  
...  
Keyword(s):  
Essential Oils ◽  
Room Temperature ◽  
Nutritive Value ◽  
Jerusalem Artichoke ◽  
Storage Conditions ◽  
Peat Moss ◽  
Helianthus Tuberosus ◽  
Blue Mold ◽  
First Time ◽  
Storage Technique

During preservation, Jerusalem artichoke (JA) tubers are subjected to deterioration by mold fungi under storage, which signifies a serious problem. A new blue mold (Penicillium polonium) was recorded for the first time on JA tubers. Penicillium mold was isolated, identified (morphologically, and molecularly), and deposited in GenBank; (MW041259). The fungus has a multi-lytic capacity, facilitated by various enzymes capable of severely destroying the tuber components. An economic oil-based procedure was applied for preserving and retaining the nutritive value of JA tubers under storage conditions. Caraway and clove essential oils, at a concentration of 2%, were selected based on their strong antifungal actions. JA tubers were treated with individual oils under storage, kept between peat moss layers, and stored at room temperature. Tubers treated with both oils exhibited lower blue mold severity, sprouting and weight loss, and higher levels of carbohydrates, inulin, and protein contents accompanied by increased levels of defense-related phytochemicals (total phenols, peroxidase, and polyphenol oxidase). Caraway was superior, but the results endorse the use of both essential oils for the preservation of JA tubers at room temperature, as an economic and eco-safe storage technique against the new blue mold.

scholarly journals Revision of the spider family Zodariidae (Arachnida, Araneae) in Iran and Turkmenistan, with seventeen new species

ZooKeys ◽  
2021 ◽  
Vol 1035 ◽  
pp. 145-193
Author(s):  
Alireza Zamani ◽  
Yuri M. Marusik
Keyword(s):  
Regional Distribution ◽  
First Record ◽  
Central Iran ◽  
Northern Iran ◽  
Western Iran ◽  
Northwestern Iran ◽  
Southwestern Iran ◽  
East Azerbaijan ◽  
First Time ◽  
Species Being

Species of the spider family Zodariidae occurring in Iran and Turkmenistan are reviewed. Seventeen species of three subfamilies are described as new to science: Lachesana kavirensissp. nov. (♂, Qom; northern Iran), L. perseussp. nov. (♂, Alborz; northern Iran) (Lachesaninae), Pax ellipitasp. nov. (♂♀, Kermanshah and Lorestan; western Iran), P. leilasp. nov. (♂♀, Fars; southwestern Iran) (Storeninae), Acanthinozodium armitasp. nov. (♂, Tehran; northern Iran), A. atrisasp. nov. (♂♀, Qazvin and Tehran; northern Iran), A. diarasp. nov. (♂, Ilam and Lorestan; western Iran), A. dorsasp. nov. (♂♀, Fars; southern Iran), A. elburzicumsp. nov. (♂♀, Tehran; northern Iran), A. kianasp. nov. (♂, Kurdistan; western Iran), A. masasp. nov. (♂, Kermanshah; western Iran), A. niushasp. nov. (♂♀, Fars, Isfahan and Markazi; central Iran), A. ovtchinnikovisp. nov. (♂, Mary; southeastern Turkmenistan), A. parmidasp. nov. (♂, Isfahan; central Iran), A. parysatissp. nov. (♂♀, Ardabil and Qazvin; northern and northwestern Iran), A. soranisp. nov. (♂, East Azerbaijan and Kurdistan; northwestern and western Iran) and Trygetus susianussp. nov. (♀, Khuzestan; southwestern Iran) (Zodariinae). Zodariellum Andreeva & Tyshchenko, 1968, currently comprising only the type species (Z. surprisum Andreeva & Tyshchenko, 1968) is rediagnosed, with the following species being (re)transferred to it: Z. asiaticum (Tyshchenko, 1970) comb. res., Z. bactrianum (Kroneberg, 1875) comb. nov., Z. bekuzini (Nenilin, 1985) comb. res., Z. chaoyangense (Zhu & Zhu, 1983) comb. res., Z. continentalis (Andreeva & Tyshchenko, 1968) comb. res., Z. furcum (Zhu, 1988) comb. res., Z. mongolicum Marusik & Koponen, 2001 comb. res., Z. proszynskii (Nenilin & Fet, 1985) comb. res., Z. nenilini (Eskov, 1996) comb. res., Z. surprisum Andreeva & Tyshchenko, 1968 comb. res., Z. schmidti Marusik & Koponen, 2001 comb. res., Z. sytchevskajae (Nenilin & Fet, 1985) comb. res. and Z. volgouralensis Ponomarev, 2007 comb. res. (all ex. Zodarion); out of these, Z. proszynskii Nenilin & Fet, 1985, previously known only from the type locality in Turkmenistan, is recorded from northeastern Iran for the first time. This paper raises the number of zodariids known from Iran to 22 species from seven genera (including the first Iranian records of Acanthinozodium Denis, 1966, Pax Levy, 1990 and Zodariellum) and those known from Turkmenistan to five species from five genera (including the first record of Acanthinozodium from this country). Regional distribution records of all species are mapped.

scholarly journals Allelopathic Effect of Serphidium kaschgaricum (Krasch.) Poljak. Volatiles on Selected Species

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 495
Author(s):  
Shixing Zhou ◽  
Toshmatov Zokir ◽  
Yu Mei ◽  
Lijing Lei ◽  
Kai Shi ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Volatile Oil ◽  
Amaranthus Retroflexus ◽  
Allelopathic Effect ◽  
Chemical Profile ◽  
Volatile Oils ◽  
Phytotoxic Activity ◽  
Volatile Organic ◽  
First Time ◽  
Stem Leaf

The chemical profile and allelopathic effect of the volatile organic compounds (VOCs) produced by a dominant shrub Serphidium kaschgaricum (Krasch.) Poljak. growing in northwestern China was investigated for the first time. Serphidium kaschgaricu was found to release volatile compounds into the surroundings to affect other plants’ growth, with its VOCs suppressing root elongation of Amaranthus retroflexus L. and Poa annua L. by 65.47% and 60.37% at 10 g/1.5 L treatment, respectively. Meanwhile, volatile oils produced by stems, leaves, flowers and flowering shoots exhibited phytotoxic activity against A. retroflexus and P. annua. At 0.5 mg/mL, stem, leaf and flower oils significantly reduced seedling growth of the receiver plants, and 1.5 mg/mL oils nearly completely prohibited seed germination of both species. GC/MS analysis revealed that among the total 37 identified compounds in the oils, 19 of them were common, with eucalyptol (43.00%, 36.66%, 19.52%, and 38.68% in stem, leaf, flower and flowering shoot oils, respectively) and camphor (21.55%, 24.91%, 21.64%, and 23.35%, respectively) consistently being the dominant constituents in all oils. Eucalyptol, camphor and their mixture exhibited much weaker phytotoxicity compared with the volatile oils, implying that less abundant compounds in the volatile oil might contribute significantly to the oils’ activity. Our results suggested that S. kaschgaricum was capable of synthesizing and releasing allelopathic volatile compounds into the surroundings to affect neighboring plants’ growth, which might improve its competitiveness thus facilitate the establishment of dominance.

Room-temperature white and color-tunable afterglow by manipulating multi-mode triplet emissions

2021 ◽  
Vol 9 (9) ◽  
pp. 3257-3263
Author(s):  
Jianwei Liu ◽  
Zhimin Ma ◽  
Zewei Li ◽  
Yan Liu ◽  
Xiaohua Fu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Single Component ◽  
Color Tunable ◽  
First Time ◽  
Multi Mode

Two isomers pDCzPyCN and oDCzPyCN are designed and synthesized. Amazingly, oDCzPyCN manifest white afterglow at room temperature. This is the first time that single-component white afterglow has finally been realized.

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