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Zeitschrift Für Naturforschung. C, A Journal of Biosciences

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https://www.readbyqxmd.com/read/30379645/multienzymatic-in-situ-hydrogen-peroxide-generation-cascade-for-peroxygenase-catalysed-oxyfunctionalisation-reactions
#1
Milja Pesic, Sébastien Jean-Paul Willot, Elena Fernández-Fueyo, Florian Tieves, Miguel Alcalde, Frank Hollmann
There is an increasing interest in the application of peroxygenases in biocatalysis, because of their ability to catalyse the oxyfunctionalisation reaction in a stereoselective fashion and with high catalytic efficiencies, while using hydrogen peroxide or organic peroxides as oxidant. However, enzymes belonging to this class exhibit a very low stability in the presence of peroxides. With the aim of bypassing this fast and irreversible inactivation, we study the use of a gradual supply of hydrogen peroxide to maintain its concentration at stoichiometric levels...
October 31, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30367812/an-efficient-biotransformation-of-progesterone-into-11%C3%AE-hydroxyprogesterone-by-rhizopus-microsporus-var-oligosporus
#2
Bahman Nickavar, Hossein Vahidi, Mehrnoosh Eslami
Rhizopus microsporus var. oligosporus is a fungus that belongs to the Mucoraceae family that is used for the preparation of some soy-fermented foods. Microbial biotransformation of progesterone by R. microsporus var. oligosporus afforded some monohydroxylated and dihydroxylated metabolites. The main product was purified using chromatographic methods and identified as 11α-hydroxyprogesterone on the basis of its spectroscopic features. Time course studies by high-performance thin-layer chromatography demonstrated that this fungi efficiently hydroxylated progesterone at the 11α-position for 3 days with a yield of 76...
October 26, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30265657/muscle-relaxant-activities-of-pistagremic-acid-isolated-from-pistacia-integerrima
#3
Abdur Rauf, Saud Bawazeer, Ghias Uddin, Bina S Siddiqui, Haroon Khan, Taibi Ben Hadda, Yahia Nasser Mabkhot, Usama Shaheen, Mohamed Fawzy Ramadan
The aim of the current work was to explore the muscle relaxant effect of pistagremic acid (PA) isolated from Pistacia integerrima in various animal paradigms. In a rotarod test, PA caused a significant (p<0.05) muscle relaxant potential in a dose-dependent manner. When studied in the inclined plane test, pretreatment with PA (5 and 10 mg/kg) caused promising activity (p<0.05) after treatment for 30, 60 and 90 min. The muscle relaxant potential of PA was strongly complimented by the traction and chimney tests, showing a dominant effect after 60 min of treatment...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30205654/benzimidazole-schiff-bases-and-their-complexes-synthesis-anticancer-activity-and-molecular-modeling-as-aurora-kinase-inhibitor
#4
Asmaa A Magd-El-Din, Hanan A Mousa, Ammar A Labib, Ashraf S Hassan, Amira S Abd El-All, Mamdouh M Ali, Ahmed A El-Rashedy, Ahmed H El-Desoky
A new series of Schiff bases containing benzіmidazole moiety 11-17 were synthesized by the reaction of 4-(1H-benzо[d]іmіdazоl-2-yl)anіline (1) with different aromatic aldehydes (4-10) via conventional heating and microwave irradiation methods. The structures of the novel Schiff bases were characterized by using different spectral data. Also, metal complexes 18-21 of compound 13 were synthesized, and their structure was confirmed by spectral measurements (IR, NMR, UV), molar conductivity, magnetic susceptibility and thermo-gravimetric analysis...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30183668/antimicrobial-activity-and-active-compounds-of-a-rhus-verniciflua-stokes-extract
#5
Jinfeng Yang, Yong Soo Kwon, Myong Jo Kim
The Rhus verniciflua Stokes (RVS) extract is used as a traditional herbal medicine in Southeast Asian countries such as Korea and China. In the present study, one phenolic acid and six flavonoids were isolated from an 80% ethanol RVS extract to examine their antimicrobial activities. These compounds were identified as 3',4',7-trihydroxyflavone (1), methyl gallate (2), gallic acid (3), fusti (4), fisetin (5), butin (6), and sulfuretin (7) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and nuclear magnetic resonance spectroscopy...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30179857/two-new-usnic-acid-derivatives-from-the-endophytic-fungus-mycosphaerella-sp
#6
Djalma M de Oliveira, Cristiane B Pereira, Graziele Mendes, Jochen Junker, Markus Kolloff, Luiz H Rosa, Carlos A Rosa, Tânia M A Alves, Carlos L Zani, Susana Johann, Betania B Cota
The endophytic fungus Mycosphaerella sp. (UFMGCB2032) was isolated from the healthy leaves of Eugenia bimarginata, a plant from the Brazilian savanna. Two novel usnic acid derivatives, mycousfuranine (1) and mycousnicdiol (2), were isolated from the ethyl acetate extract, and their structure was elucidated by NMR and MS analyses. Compounds 1 and 2 exhibited moderate antifungal activities against Cryptococcus neoformans and Cryptococcus gattii, each with minimum inhibitory concentration values of 50.0 μg/mL and 250...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30074902/carotenoids-tocopherols-organic-acids-charbohydrate-and-mineral-content-in-different-medicinal-plant-extracts
#7
Dasha Mihaylova, Radka Vrancheva, Nadezhda Petkova, Manol Ognyanov, Ivelina Desseva, Ivan Ivanov, Mariya Popova, Aneta Popova
Nettle (Urtica dioica L.), tansy (Tanacetum vulgare L.), bladder campion (Silene vulgaris (Moench) Garcke, waterpepper (Polygonum hydropiper L.), common centaury (Centaurium erythraea Pers.) and rose hip fruit (Rosa canina L. cv. Plovdiv 1) were used for preparation of different water extracts (infusion, decoction and microwave extract) and ethanol (tincture) extracts. Carotenoids (lutein, lycopene and β-carotene), tocopherols (α-, γ- and δ-), organic acids (ascorbic, malic, fumaric and citric), five macro- and three microelements, sugars and uronic acids content in the obtained extracts were analyzed...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30074901/facile-one-pot-syntheses-of-new-c-28-esters-of-oleanolic-acid-and-studies-on-their-antiproliferative-effect-on-t-cells
#8
Muhammad S Ali, Ghafoor Ahmed, Muhammad A Mesaik, Muhammad R Shah, Mehreen Lateef, Muhammad I Ali
Structure-activity relationship studies on oleanolic acid (1) have resulted in facile syntheses of its new C-28 esters 2-7 by way of one-pot reaction of 1 with a variety of alkylating agents. Oleanolic acid and its new esters were studied for their in vitro antiproliferative effect on healthy human peripheral blood mononuclear cell isolated phytohemagglutinin activated T cells. Results showed that compounds 1, 3, and 5 exhibited significant inhibitory activity on T-cell proliferation. Compound 5 was found to be the most potent, with an IC50 value of 4...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30067514/biodiversity-and-full-genome-sequence-of-potato-viruses-alfalfa-mosaic-virus-and-potato-leaf-roll-virus-in-egypt
#9
Engy E Abdel Aleem, Radwa M Taha, Faiza A Fattouh
Solanum tuberosum (potato) is the second most important vegetable crop in Egypt. It is locally consumed, manufactured or supplied for export to Europe and other Arab countries. Potato is subject to infection by a number of plant viruses, which affect its yield and quality. Potato virus Y (PVY), potato leaf roll virus (PLRV), and Alfalfa mosaic virus (AMV) were detected in major potato-growing areas surveyed. Multiplex-RT-PCR assay was used for the detection of these three viruses in one reaction using three specific primer pairs designed to amplify genomic parts of each virus (1594 bp for PLRV, 795 bp for AMV, 801 bp for PVY)...
November 27, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30205665/erratum-to-transcriptome-profiling-reveals-an-iaa-regulated-response-to-adventitious-root-formation-in-lotus-seedling
#10
Cheng Libao, Jiang Runzhi, Yang Jianjun, Xu Xiaoyong, Zeng Haitao, Li Shuyan
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/30205664/erratum-to-a-comparative-proteomic-analysis-for-adventitious-root-formation-in-lotus-root-nelumbo-nucifera-gaertn
#11
Cheng Libao, Jiang Runzhi, Yang Mengli, Li Liangjun, Li Shuyan
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29936491/why-is-the-hydrolytic-activity-of-acetylcholinesterase-ph-dependent-kinetic-study-of-acetylcholine-and-acetylthiocholine-hydrolysis-catalyzed-by-acetylcholinesterase-from-electric-eel
#12
Alena Komersová, Markéta Kovářová, Karel Komers, Václav Lochař, Alexander Čegan
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29902158/bioactive-compounds-from-bay-leaves-laurus-nobilis-extracted-by-microwave-technology
#13
Diana B Muñiz-Márquez, Jorge E Wong-Paz, Juan C Contreras-Esquivel, Raúl Rodríguez-Herrera, Cristóbal N Aguilar
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29813035/antimalarial-activity-of-the-isolates-from-the-marine-sponge-hyrtios-erectus-against-the-chloroquine-resistant-dd2-strain-of-plasmodium-falciparum
#14
Eunsin Ju, Abdul Latif, Chang-Suk Kong, Youngwan Seo, Yeon-Ju Lee, Seema R Dalal, Maria B Cassera, David G I Kingston
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29794259/a-proteomics-analysis-of-adventitious-root-formation-after-leaf-removal-in-lotus-nelumbo-nucifera-gaertn
#15
Libao Cheng, Huiying Liu, Runzhi Jiang, Shuyan Li
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29787378/larval-hemolymph-of-rhinoceros-beetle-allomyrina-dichotoma-enhances-insulin-secretion-through-atf3-gene-expression-in-ins-1-pancreatic-%C3%AE-cells
#16
Seung-Whan Kim, Hyun-Woo Suh, Bo-Kyung Yoo, Kisang Kwon, Kweon Yu, Ji-Young Choi, O-Yu Kwon
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29787377/the-effects-of-inulin-and-fructo-oligosaccharide-on-the-probiotic-properties-of-lactobacillus-spp-isolated-from-human-milk
#17
Şener Tulumoğlu, Belgin Erdem, Ömer Şimşek
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29485971/evaluation-of-lavandula-stoechas-l-subsp-stoechas-l-mentha-spicata-l-subsp-spicata-l-essential-oils-and-their-main-components-against-sinusitis-pathogens
#18
Nursenem Karaca, Betül Demirci, Fatih Demirci
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29320368/pobeguinine-a-monoterpene-indole-alkaloid-and-other-bioactive-constituents-from-the-stem-bark-of-nauclea-pobeguinii
#19
Jean J K Bankeu, Stéphanie Madjouka, Guy R T Feuya, Yannick S F Fongang, Sadaf Siddiqui, Iftikhar Ali, Lateef Mehreen, Bruno N Lenta, Sammer Yousuf, Didérot T Noungoué, Augustin S Ngouela, Muhammad S Ali
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29283883/screening-of-the-five-different-wild-traditional-and-industrial-saccharomyces-cerevisiae-strains-to-overproduce-bioethanol-in-the-batch-submerged-fermentation
#20
Reza Shaghaghi-Moghaddam, Hoda Jafarizadeh-Malmiri, Parviz Mehdikhani, Sepide Jalalian, Reza Alijanianzadeh
No abstract text is available yet for this article.
September 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
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