Relevant bibliographies by topics / C. schweinfurthii

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Academic literature on the topic 'C. schweinfurthii'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "C. schweinfurthii"

1

Treadwell, Edward M., Steven C. Cermak, and David F. Wiemer. "Synthesis of Schweinfurthin C, a Geranylated Stilbene fromMacaranga schweinfurthii." Journal of Organic Chemistry 64, no. 23 (November 1999): 8718–23. http://dx.doi.org/10.1021/jo9908795.

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Treadwell, Edward M., Steven C. Cermak, and David F. Wiemer. "ChemInform Abstract: Synthesis of Schweinfurthin C (I), a Geranylated Stilbene from Macaranga schweinfurthii." ChemInform 31, no. 11 (June 10, 2010): no. http://dx.doi.org/10.1002/chin.200011183.

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3

Yahata, Masaki, Hisato Kunitake, Kiichi Yasuda, Kensuke Yamashita, Haruki Komatsu, and Ryoji Matsumoto. "Production of Sexual Hybrid Progenies for Clarifying the Phylogenic Relationship between Citrus and Citropsis species." Journal of the American Society for Horticultural Science 131, no. 6 (November 2006): 764–69. http://dx.doi.org/10.21273/jashs.131.6.764.

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The reciprocal crosses between two citrus cultivars and Citropsis schweinfurthii (Engl.) Swing. & M. Kell. were conducted. The cross between `Nanpu' tangor {`Kiyomi' tangor (Citrus unshiu Marc. × C. sinensis Osbeck) × `Fairchild' tangerine-tangelo [clementine (C. clementina hort. ex Tanaka) × `Orlando' tangelo (C. paradisi Macf. × C. reticulata Blanco)]} and C. schweinfurthii produced some developed seeds with an average weight approximately 1/10 of that of the seeds obtained from open pollination in `Nanpu' tangor. These seeds germinated on Murashige and Tucker medium, and three and 28 seedlings were obtained from crosses using C. schweinfurthii as the female and the male parent, respectively. The absolute nuclear genome size of these seedlings [∼0.84 pg of DNA content per somatic nucleus (2C)] was intermediate of that of the `Nanpu' tangor (0.78 pg/2C) and C. schweinfurthii (0.90 pg/2C) seedlings. The chromosome counts of the young leaves revealed that they were diploids (2n = 2X = 18). Furthermore, the hybridity of the seedlings obtained from the reciprocal crosses between `Nanpu' tangor and C. schweinfurthii was confirmed by randomly amplified polymorphic DNA (RAPD) analysis and cleaved amplified polymorphic sequence (CAPS) analysis. These hybrids will be utilized as important materials for investigating the phylogenic relationships between these genera in the subfamily Aurantioideae.
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Owolabi, Moses S., Akintayo Ogundajo, Balogun Olaoye Solomon, Logunleko Olatunde, Noura S. Dosoky, and William N. Setzer. "Essential Oil Compositions, Antibacterial and Antifungal Activities of Nigerian Members of the Burseraceae: Boswellia dalzielii and Canarium schweinfurthii." Natural Product Communications 15, no. 8 (August 2020): 1934578X2094694. http://dx.doi.org/10.1177/1934578x20946940.

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The Burseraceae is an important family of resin-producing trees and shrubs, which have yielded biologically active essential oils. Boswellia dalzielii and Canarium schweinfurthii are members of the family that are used in West African traditional medicine for a variety of ailments. The leaf essential oils of B. dalzielii have been obtained from 2 different locations in north-central Nigeria, while the leaf and stem bark essential oils of C. schweinfurthii have been obtained from 3 locations. The chemical compositions of the essential oils have been determined by gas chromatography-mass spectrometry and show wide variation, especially for the leaf essential oils. The leaf essential oils of B. dalzielii and C. schweinfurthii have been screened for antibacterial and antifungal activity; C. schweinfurthii leaf essential oil showed remarkable activity against Aspergillus niger with a minimum inhibitory concentration of 78.1 μg/mL.
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Ehiem, James Chinaka, Victor Ifeanyichukwu Obiora Ndirika, Udochukwu Nelson Onwuka, and Vijaya Raghavan. "The moisture-dependent flow characteristics of Canarium schweinfurthii Engler nuts." Research in Agricultural Engineering 65, No. 2 (July 2, 2019): 40–47. http://dx.doi.org/10.17221/47/2018-rae.

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The flow characteristics of three varieties of Canarium schweinfurthii Engler nuts (Canarium schweinfurthii short, Canarium schweinfurthii long and Canarium schweinfurthii large – CSHT<sub>LRG</sub>) relevant for the design and development of handling and storage systems was studied at three different moisture levels (10.20, 17.23 and 25.06% wet basis). The flow characteristics investigated include the normal stress, the shear stress, the initial shear stress, the coefficient and angle of the internal friction, the coefficient of mobility and the size of the discharge opening. An Instron universal machine at a cross-head speed of 25 mm·min<sup>–1</sup> was used to obtain the shear force. The results obtained showed that all the flow properties increased with an increase in the moisture content except for the coefficient of mobility. Moreover, the variety of the C. schweinfurthii nuts had a significant effect (P &lt; 0.05) on the flow characteristics. CSHT<sub>LRG</sub> had the best ability to flow freely than the other varieties. The hopper side wall angle for all the varieties ranged from 67–70°. Round, square and triangle shapes are all acceptable for the smooth flow of C. schweinfurthii nuts.
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Salawu, Kayode Muritala, Abdulsalam Ayodeji Oyerinde, Abdulmalik Aliyu, and Obafemi Ibitayo Obajemihi. "Growth inhibitory properties and antimicrobial evaluation of Aloe schweinfurthii (Baker) leaf rind extract." Journal of Pharmacy & Bioresources 17, no. 2 (April 9, 2021): 174–79. http://dx.doi.org/10.4314/jpb.v17i2.11.

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Cancer and infectious diseases combined are leading cause of death and public health concern. In developing countries, about 80% of the populace depends on medicinal plants for their general health care needs including treatment of infectious diseases and cancer. Aloe schweinfurthii (Aloaceae) is a small medicinal herb that is commonly used for the treatment of cancerous and infectious diseases in South-West Nigeria. The focus of this study was to evaluate the growth inhibitory and antimicrobial activities of the herb. The rind of the herb was collected, air dried, pulverized and extracted into distilled methanol by cold maceration. The dried extract obtained was subjected to growth inhibitory and antimicrobial assays. The extract displayed concentration dependent growth inhibitory activity with IC50 of 484.7±2.16 and 1188±2.32µg/mL compared to cyclophosphamide with IC50 of 174.3±0.19 and 834.5±0.84 µg/mL in Sorghum bicolor radical and Allium cepa root growth inhibitory assays, respectively. The extract displayed concentration dependent antibacterial and antifungal effects with the highest activity against C. freundi (18 mm zone of inhibition) at 50 mg/mL. The extract of Aloe schweinfurthii leaf rind displayed marked growth inhibitory and antimicrobial bioactivities. The extract maybe considered as a viable candidate for discovery of chemotherapeutic agent (s). Keywords: Growth inhibition, Antimicrobial, Aloe schweinfurthii, Chemotherapeutic Agent
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7

James Chinaka, Ehiem. "Viscosity and biodiesel characteristics of wild Canarium schweinfurthii Engl. fruit oil." Research in Agricultural Engineering 64, No. 4 (December 31, 2018): 169–75. http://dx.doi.org/10.17221/99/2017-rae.

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The viscosity of two varieties of Canarium schweinfurthiiEngl. fruits oil (large and long) were studied at four different temperatures (30, 40, 50 and 60<sup>o</sup>C) and three shear rates (7.91, 15.82 and 39.54 s<sup>–1</sup>). SurgiFriend Medical (model NDJ-5S) viscometer was used to carry out the study. Biodiesel characteristics of the oil were also investigated. The results showed that variety had no effect (P &lt; 0.05) on the viscosity of Canarium schweinfurthii Engl. fruit while temperature had especially at 50<sup>o</sup>C and above. The shear rate of 15.82 s<sup>–1 </sup>(12 rps) gave the lowest oil viscosity for both varieties. The oil from large fruit had the best temperature stability, low percentage viscosity (6.33%) variation and least activation energy (796.51 J·mol<sup>–1</sup>·K<sup>–1</sup>) while long variety had best biodiesel characteristic for safe handling. Temperature had no significant (P &lt; 0.05) effect on the consistency coefficient (C) and flow behaviour index (n) of both varieties of Canarium schweinfurthii Engl. fruits oil. Besides, oil from both fruit varieties is Newtonian fluids.
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8

Maguie, Kammegne Adelaide, Ndi Julius Nsami, Kouotou Daouda, Che Nangah Randy, and Ketcha Joseph Mbadcam. "Adsorption Study of the Removal of Copper (II) Ions using Activated Carbon Based Canarium Schweinfurthii Shells Impregnated with ZnCl2." IRA-International Journal of Applied Sciences (ISSN 2455-4499) 8, no. 1 (August 15, 2017): 18. http://dx.doi.org/10.21013/jas.v8.n1.p2.

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<p>The adsorption of Cu2+ions on activated carbon based canarium schweinfurthii impregnated with ZnCl2 was studied. The shells of canarium schweinfurthii were impregnated with ZnCl2 at varying ZnCl2 concentrations, temperature, residence time while keeping the heating rate fixed at 10 °C / min and the ratio of impregnation of 1:1. The activated carbon with the highest surface area in term of iodine number of 860,817 mg/g, the highest methylene blue of 741,6 mg/g and 74,66 % of yield of carbon was obtained at 650 °C, 60 % ZnCl 2 and 30min. From the batch adsorption studies, the equilibrium time was found to be 40 min. Analysis of equilibrium isotherm models revealed a good correlation of the experimental data with the Tempkin (R 2 = 0.909) model. This confirms a high affinity of the activated carbon for Cu 2+ ions on the heterogeneous surface. The value of energy obtained from the Tempkin model was 60,606 J/mol and the presence of pics between 487 cm-1 to 871 cm-1 indicating that physisorption and chemisorption were taking place during this sorption. The pseudo-second order kinetics(R 2 = 0.999) governs the adsorption of Cu2+ions on this activated carbon.</p>
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9

Kaur, Taranjit, Jatinder Singh, Michael A. Huffman, Klára J. Petrželková, Nancy S. Taylor, Shilu Xu, Floyd E. Dewhirst, et al. "Campylobacter troglodytissp. nov., Isolated from Feces of Human-Habituated Wild Chimpanzees (Pan troglodytes schweinfurthii) in Tanzania." Applied and Environmental Microbiology 77, no. 7 (January 28, 2011): 2366–73. http://dx.doi.org/10.1128/aem.01840-09.

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ABSTRACTThe transmission of simian immunodeficiency and Ebola viruses to humans in recent years has heightened awareness of the public health significance of zoonotic diseases of primate origin, particularly from chimpanzees. In this study, we analyzed 71 fecal samples collected from 2 different wild chimpanzee (Pan troglodytes) populations with different histories in relation to their proximity to humans.Campylobacterspp. were detected by culture in 19/56 (34%) group 1 (human habituated for research and tourism purposes at Mahale Mountains National Park) and 0/15 (0%) group 2 (not human habituated but propagated from an introduced population released from captivity over 30 years ago at Rubondo Island National Park) chimpanzees, respectively. Using 16S rRNA gene sequencing, all isolates were virtually identical (at most a single base difference), and the chimpanzee isolates were most closely related toCampylobacter helveticusandCampylobacter upsaliensis(94.7% and 95.9% similarity, respectively). Whole-cell protein profiling, amplified fragment length polymorphism analysis of genomic DNA,hsp60sequence analysis, and determination of the mol% G+C content revealed two subgroups among the chimpanzee isolates. DNA-DNA hybridization experiments confirmed that both subgroups represented distinct genomic species. In the absence of differential biochemical characteristics and morphology and identical 16S rRNA gene sequences, we propose to classify all isolates into a single novel nomenspecies,Campylobacter troglodytis, with strain MIT 05-9149 as the type strain; strain MIT 05-9157 is suggested as the reference strain for the secondC. troglodytisgenomovar. Further studies are required to determine whether the organism is pathogenic to chimpanzees and whether this novelCampylobactercolonizes humans and causes enteric disease.
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10

Easton, Julian, Nerissa Chao, Felix Mulindahabi, Nicolas Ntare, Louis Rugyerinyange, and Innocent Ndikubwimana. "Status and conservation of the only population of the Vulnerable owl-faced monkey Cercopithecus hamlyni in Rwanda." Oryx 45, no. 3 (June 7, 2011): 435–38. http://dx.doi.org/10.1017/s0030605310001468.

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AbstractThe elusive, Vulnerable owl-faced monkey Cercopithecus hamlyni is a rare and little studied species and one of the least known of the African Cercopithecidae. This study describes the distribution and relative abundance of the only known population in East Africa, in Nyungwe National Park, Rwanda. This species is restricted to a small (32 km2) area of bamboo and bamboo–forest mix in the southern sector of the Park, close to the international border with Burundi. We present the first empirical data of its abundance in the bamboo forests of Nyungwe. A total length of 185 km of transect were surveyed to estimate relative abundance of diurnal primates. Encounter rates with the owl-faced monkey were 0.081 groups km-1 (n = 15). Mean group size was 3.6 individuals. Eight independent photographs of C. hamlyni were obtained from five camera traps during 182 camera-days. Four other species of primates occur in the bamboo forest: eastern chimpanzee Pan troglodytes schweinfurthii, Angola colobus Colobus angolensis, L’Hoest’s monkey Cercopithecus l’hoesti and blue monkey Cercopithecus mitis. The main threats to the bamboo forest are from the illegal harvesting of bamboo, trapping and tree-cutting. These threats originate from both Rwanda and Burundi. There is an urgent need for conservation action to halt the destruction and degradation of the bamboo forest and to ensure the long-term survival of the owl-faced monkey in Rwanda.
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Dissertations / Theses on the topic "C. schweinfurthii"

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Bédounguindzi, Walter Fiacre. "Caractérisation chimique et application à la préservation du bois des oléorésines d’Aucoumea klaineana (Okoumé), Canarium schweinfurthii (Aiélé), Dacryodes buettneri (Ozigo) et Dacryodes edulis (Safoutier) du Gabon." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0070.

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Ce travail évalue l’apport des trois fractions (RB, RP et HE) d’Ak, Cs, Db et De du Gabon dans la préservation. Pour cela, une analyse chimique par GC/MS des trois fractions a d’abord été faite, ensuite l’étude de leurs activités antifongique et antitermite, enfin l’étude de leurs effets dans la protection des blocs de bois suite aux attaques des agents de dégradation. Les résultats des analyses chimiques montrent que les HE sont constitués des monoterpènes et de monoterpénoïdes, alors que les RB et RP sont composes d’un mélange de monoterpènes, de monoterpénoïdes et de triterpènes. Les tests biologiques de ces derniers vis-à-vis de PP, CP, CV et PS, montrent une faible activité antifongique, mais montrent une forte activité antitermite. Ces fractions améliorent la durabilité du bois contre les champignons a 20%, et une bonne résistance aux blocs de bois vis-à-vis des termites. Ces dernières associées au Tébuconazole, augmentent la résistance du bois face aux agents de dégradation du bois. Leurs caractères lessivables sont clairement mis en évidence
This work evaluates the contribution of the three fractions (RR, PR and EO) of Ak, Cs, Db and De from Gabon to preservation. For that purpose, a chemical analysis by GC/MS of the three fractions was first made, then the study of their antifungal and antitermite activities, and finally the study of their effects in the protection of wood blocks following the attacks of the degradation agents. The results of the chemical analyses show that the HE are made up of monoterpenes and monoterpenoids, whereas the RB and RP are made up of a mixture of monoterpenes, monoterpenoids and triterpenes. Bioassays of the latter against PP, CP, CV and PS show low antifungal activity, but show high antitermite activity. These fractions improve the durability of the wood against fungi by 20%, and a good resistance of the wood blocks against termites. The latter, associated with Tebuconazole, increase the resistance of wood against wood degradation agents. Their leachable characteristics are clearly highlighted
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Book chapters on the topic "C. schweinfurthii"

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Taber, Douglass F. "Stereoselective C–O Ring Construction: The Keck Synthesis of Bryostatin I." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0046.

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Vladimir Gevorgyan of the University of Illinois, Chicago homologated (Angew. Chem. Int. Ed. 2011, 50, 2808) the ketone 1 to the epoxide 2 using cyanogen bromide. Manabu Abe of Hiroshima University optimized (J. Am. Chem. Soc. 2011, 133, 2592) the diastereoselectivity of the Paternò-Büchi addition of benzophenone 4 to the secondary allylic alcohol 3 to give 5. Debaraj Mukherjee of the Indian Institute of Integrative Medicine constructed (Org. Lett. 2011, 13, 576) the lactone 7 by adding acetate to 6, with remarkable regioselectivity and diastereoselectivity. Tristan H. Lambert of Columbia University employed (Org. Lett. 2011, 13, 740) cyclopropenium activation to cyclize the diol 8 to 9. Brian L. Pagenkopf of the University of Western Ontario designed (Org. Lett. 2011, 13, 572) a Co catalyst for the diastereoselective oxidative cyclization of 11 to 12. Goverdhan Mehta of the Indian Institute of Science, Bangalore, found (Tetrahedron Lett. 2011, 52, 1749) that the Z-diene 13 cyclized efficiently to give the cyclic ether 14. Fabien Gagosz of the Ecole Polytechnique found (J. Am. Chem. Soc. 2011, 133, 7696) that the protonated complex derived from the allene 15 abstracted a hydride from the distal benzyl group, leading to cyclization to 16. Haruhiko Fuwa of Tohoku University found (Org. Lett. 2011, 13, 1820) that the unsaturated thioester 17 cyclized under gentle acid catalysis. Unsaturated esters (not illustrated) can be cyclized under alkaline conditions (Tetrahedron Lett. 2011, 52, 1372). Malcolm D. McLeod of the Australian National University established (J. Org. Chem. 2011, 76, 1992) a combination of Escherichia coli-derived enzyme and an α-d-glucuronyl fluoride donor for converting an alcohol 19 to the corresponding glucuronide metabolite 20. En route to an improved synthesis of the schweinfurthins, potent antineoplastic agents, David F. Wiemer of the University of Iowa devised (J. Org. Chem. 2011, 76, 909) the cyclization/ benzyloxymethyl transfer cascade that transformed 21 into 22. The synthesis and biological activity of the bryostatins is developing into one of the great success stories of natural products chemistry. A key step in the total synthesis of bryostatin 1 25 designed (J. Am. Chem. Soc. 2011, 133, 744) by Gary E. Keck of the University of Utah was the Rainier cyclization of 23 to 24.
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