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Zeitschrift für Naturforschung
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7986-2014
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Bulgaria
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- Author:
- Liliya Georgievaa; Strahil Berkov; Violeta Kondakova; Jaume Bastida; Francesc Viladomat; Atanas Atanassov; Carles Codina
- Source:
- Zeitschrift für Naturforschung 2014 v.62 no.9-10 pp. 627-635
- ISSN:
- 1865-7125
- Subject:
- Alzheimer disease; Leucojum aestivum; acetylcholinesterase; bulbs; gas chromatography-mass spectrometry; lycorine; summer; Bulgaria
- Abstract:
- ... Leucojum aestivum (summer snowflake) is a plant species used for the extraction of galanthamine, an acetylcholinesterase inhibitor for the treatment of Alzheimer’s disease. Extracts from bulbs collected from 18 Bulgarian populations and from shoot-clumps obtained in vitro from 8 different populations showed variations in their alkaloid composition. Nineteen alkaloids were detected in the studied s ...
- DOI:
- 10.1515/znc-2007-9-1002
- https://doi.org/10.1515/znc-2007-9-1002
- Author:
- Milka N. Todorova; Ljuba N. Evstatieva
- Source:
- Zeitschrift für Naturforschung 2014 v.56 no.7-8 pp. 506-512
- ISSN:
- 1865-7125
- Subject:
- Tanacetum; sesquiterpenoid lactones; spectral analysis; Bulgaria
- Abstract:
- ... Chemical investigation of the Bulgarian species Tanacetum, parthenium, T. millefolium, T. achilleifolium, T.corymbosum and T. macrophyllum afforded in addition to 24 known sesquiterpene lactones a new 12, 8-eudesmanolide 22. Besides, four known highly oxigenated terpenoids and a new keto-diol 30 of the rare iphionane skeleton were also isolated. The structures were elucidated on the basis of their ...
- DOI:
- 10.1515/znc-2001-7-806
- https://doi.org/10.1515/znc-2001-7-806
- Author:
- Strahil Berkova; Rawia Zayed
- Source:
- Zeitschrift für Naturforschung 2014 v.59 no.3-4 pp. 184-186
- ISSN:
- 1865-7125
- Subject:
- Datura inoxia; alkaloids; fruits; gas chromatography-mass spectrometry; leaves; plant organs; roots; Bulgaria; Egypt
- Abstract:
- ... The alkaloid spectra of Datura innoxia plants grown in Egypt and Bulgaria were investigated by GC-MS. Thirty-eight alkaloids were detected in the roots, leaves and fruits of the plants. Five new alkaloids for D. innoxia are reported. Alkaloid spectra of Egyptian and Bulgarian plants differ significantly in respect to their alkaloid composition and main alkaloids accumulated in the plant organs. ...
- DOI:
- 10.1515/znc-2004-3-409
- https://doi.org/10.1515/znc-2004-3-409
- Author:
- Jordan Manasiev; Maria Gerginova; Hyusein Yemendzhiev; Nadejda Peneva; Zlatka Alexieva
- Source:
- Zeitschrift für Naturforschung 2014 v.63 no.1-2 pp. 133-138
- ISSN:
- 0939-5075
- Subject:
- Acinetobacter; Burkholderia; Escherichia coli; Lactobacillus acidophilus; Trichosporon cutaneum; hybridization; industrialization; loci; nucleic acid hybridization; nucleotide sequences; oligonucleotide probes; oligonucleotides; phenol; polymerase chain reaction; ribosomal DNA; sequence homology; wastewater; yeasts; Bulgaria
- Abstract:
- ... In an attempt to estimate the occurrence of phenol hydroxylase-related gene sequences we performed a dot blot hybridization assay with DNA from phenol utilizing Trichosporon cutaneum R57 strain NBIMCC 2414 and microbial isolates from different wastewaters. The used oligonucletides were homologous to the 5 ′-end of TORPHD locus (NCBI)-coding phenol hydroxylase in Trichosporon cutaneum ATCC 46490 an ...
- DOI:
- 10.1515/znc-2008-1-224
- https://doi.org/10.1515/znc-2008-1-224
- Author:
- Peter Malakov; Georgi Papanov; Nikola M. Mollov; Stefan L. Spassov
- Source:
- Zeitschrift für Naturforschung 2014 v.33 no.10 pp. 1142-1144
- ISSN:
- 0932-0776
- Subject:
- Teucrium; bitter-tasting compounds; diterpenoids; plant extracts; Bulgaria
- Abstract:
- ... A new furanoid diterpene of clerodane type, Montanin-D [1], is isolated from the bitter fraction of the arial parts of Teucrium montanum L., spread in Bulgaria. Its structure is established on the basis of spectral evidance and chemical transformations. ...
- DOI:
- 10.1515/znb-1978-1020
- https://doi.org/10.1515/znb-1978-1020
- Author:
- Iliana Atanasova; Petia Kabadjova; Nevena Bogatzevska; Penka Moncheva
- Source:
- Zeitschrift für Naturforschung 2014 v.60 no.11-12 pp. 893-898
- ISSN:
- 0939-5075
- Subject:
- Erwinia amylovora; genome; host plants; plasmids; polymerase chain reaction; strawberries; Bulgaria
- Abstract:
- ... Nine strains of Erwinia amylovora were isolated from new host plants in Bulgaria D chokeberry and strawberry. The strains were characterized morphologically and biochemically using the API 20E and BIOLOG system. It was established that they showed three different API 20E metabolic profiles, not found by previous studies of E. amylovora. All strains were identified as E. amylovora due to their meta ...
- DOI:
- 10.1515/znc-2005-11-1212
- https://doi.org/10.1515/znc-2005-11-1212
- Author:
- Iliana Atanasova; Penka Moncheva; Petia Kabadjova; Sava Tishkov; Katerina Stefanova; Zhechko Dimitrov; Nevena Bogatzevska
- Source:
- Zeitschrift für Naturforschung 2014 v.62 no.11-12 pp. 857-868
- ISSN:
- 1865-7125
- Subject:
- Erwinia amylovora; evolution; genome; host plants; oxytetracycline; phenotypic variation; plasmids; polyacrylamide gel electrophoresis; polymerase chain reaction; protein composition; streptomycin; Bulgaria
- Abstract:
- ... Fifty-one strains of Erwinia amylovora isolated from nine host plants in Bulgaria were characterized phenotypically and identified by the API 20E and BIOLOG system. The identification was confirmed by PCR amplification of a specific region of the plasmid pEA29 and the genome ams region. The phenotypic diversity of the strains was studied on the basis of their API 20E and BIOLOG metabolic profiles, ...
- DOI:
- 10.1515/znc-2007-11-1214
- https://doi.org/10.1515/znc-2007-11-1214
- Author:
- Milena Velikova; Vassya Bankova; Kadriye Sorkun; Saadi Houcine; Iva Tsvetkova; A. Kujumgiev
- Source:
- Zeitschrift für Naturforschung 2014 v.55 no.9-10 pp. 790-793
- ISSN:
- 1865-7125
- Subject:
- antifungal properties; buds; chemical composition; esters; ferulic acid; flavonoids; gas chromatography-mass spectrometry; propolis; Algeria; Bulgaria; Greece; Mediterranean region; Turkey (country)
- Abstract:
- ... The chemical composition of propolis from Bulgaria, Turkey, Greece and Algeria was investigated by GC-MS. All of them contained mainly flavonoids and esters of caffeic and ferulic acids, which indicated that their main source are buds of poplars of the taxonomic section Aegieros. Some Turkish samples contained a low percent of diterpenic acids, while in Algerian samples significant amounts of a hy ...
- DOI:
- 10.1515/znc-2000-9-1019
- https://doi.org/10.1515/znc-2000-9-1019
- Author:
- Ingrid Werner; Pavel Mucaji; Armin Presser; Sabine Glasl
- Source:
- Zeitschrift für Naturforschung 2014 v.62 no.2 pp. 267-271
- ISSN:
- 0932-0776
- Subject:
- Achillea; chemical structure; diterpenoids; flowers; methylene chloride; nuclear magnetic resonance spectroscopy; phenolic compounds; scopoletin; sesquiterpenoids; Bulgaria
- Abstract:
- ... The investigation of a dichloromethane extract of flower heads of Achillea clypeolata collected in Bulgaria led to the isolation of one guaiane (4,10,11-trihydroxy-guaiane, 1), four eudesmanes (4(15)-eudesmene-1β ,11-diol, 2, clypeotriol, 3, 3-epi-clypeotriol, 4, cryptomeridiol, 5), one diterpene (sugeroside, 6) and two phenolic compounds (centaureidin, 7 and scopoletin, 8). Their structures were ...
- DOI:
- 10.1515/znb-2007-0219
- https://doi.org/10.1515/znb-2007-0219
- Author:
- Miklós Tóth; Éva Csonka; Flórián Bakcsa; Pál Benedek; István Szarukán; Stanislav Gomboc; Teodora Toshova; Mitko Subchev; István Ujváry
- Source:
- Zeitschrift für Naturforschung 2014 v.62 no.9-10 pp. 772-778
- ISSN:
- 1865-7125
- Subject:
- Brassicaceae; Phyllotreta cruciferae; Psylliodes; allyl isothiocyanate; baits; cabbage; monitoring; pests; plant cultural practices; Bulgaria; Hungary; Slovenia
- Abstract:
- ... In field tests in Hungary, Slovenia and Bulgaria, in allyl isothiocyanate-baited traps significantly more beetles of Phyllotreta cruciferae, Ph. vittula, Ph. undulata, Ph. nigripes, Ph. nodicornis, Ph. balcanica, Ph. atra, Ph. procera, Ph. ochripes, Ph. diademata and Psylliodes chrysocephalus (Coleoptera, Chrysomelidae, Halticinae) were captured than in unbaited control traps. With the exception o ...
- DOI:
- 10.1515/znc-2007-9-1022
- https://doi.org/10.1515/znc-2007-9-1022
- Author:
- Ivanka Kostova; Dragomir Dinchev; Gudrun Hopp Rentsch; Vladimir Dimitrov; Antoaneta Ivanova
- Source:
- Zeitschrift für Naturforschung 2014 v.57 no.1-2 pp. 33-38
- ISSN:
- 1865-7125
- Subject:
- Tribulus terrestris; aerial parts; nuclear magnetic resonance spectroscopy; saponins; sodium; Bulgaria
- Abstract:
- ... The known furostanol saponins methylprotodioscin and protodioscin and two new sulfated saponins, sodium salt of 26-O-β-glucopyranosyl-22α-methoxy-(25R)-furost-5-ene-3β,26-diol- 3-O-α-rhamnopyranosyl-(1→2)-β-4-O-sulfo-glucopyranoside (methylprototribestin) and sodium salt of 26-O-β-glucopyranosyl-22α-hydroxy-(25R)-furost-5-ene-3β,26-diol-3-O-α-rhamnopyranosyl-(1→2)-β-4-O-sulfo-glucopyranoside (prot ...
- DOI:
- 10.1515/znc-2002-1-206
- https://doi.org/10.1515/znc-2002-1-206
- Author:
- V. Bankova; R. Christov; S. Popov; O. Pureb; G. Bocari
- Source:
- Zeitschrift für Naturforschung 2014 v.49 no.1-2 pp. 6-10
- ISSN:
- 1865-7125
- Subject:
- oils; propolis; volatile compounds; Albania; Bulgaria; Mongolia
- Abstract:
- ... Volatile oils from Albanian, Bulgarian and Mongolian propolis have been investigated. ...
- DOI:
- 10.1515/znc-1994-1-202
- https://doi.org/10.1515/znc-1994-1-202