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匹配条件： “Kecombrang (Nicolia speciosa)” ，找到相关结果约107条。
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AKTIVITAS ANTIBAKTERI EKSTRAK BUNGA KECOMBRANG TERHADAP BAKTERI PATOGEN DAN PERUSAK PANGAN [Antibacterial Activity of Kecombrang Flower Extract Toward Pathogenic and Food Spoilage Bacteria]
Rifda Naufalin1),Betty Sri Laksmi Jenie2),Feri Kusnandar2),Mirnawati Sudarwamto3)
Jurnal Teknologi dan Industri Pangan , 2005,
Abstract: In this study, kecombrang flowers was extracted with non polar (hexane), semipolar (ethil acetate) and polar (ethanol) solvent. The result revealed that ethil acetat and ethanol extracts inhibited 7 bacteria, i.e : spore forming bacteria (Bacillus cereus), Gram positive bacteria (Staphylococcus aureus) and (Listeria monocytogenes), Gram negative bacteria (Salmonella typhimurium, Aeromonas hydrophila and Escherichia coli), spoilage bacteria (Pseudomonas aeruginosa) but did not inhibit Lactobacillus plantarum. The hexane extract did not show antimicrobial activity. On well diffusion test, ethil acetate developed clear zones of 12.3 ￠a a€ 27.3 mm (diameters) and this was higher than ethanol extract 11.0-15.4 mm (diameters). The MIC (minimum inhibitory concentration) of ethil acetate and ethanol extract against the seven bacteria were 3-13 mg/ml.
Evaluation of Antioxidant and Antibacterial Activities of Aqueous, Methanolic and Alkaloid Extracts from Mitragyna Speciosa (Rubiaceae Family) Leaves
Suhanya Parthasarathy,Juzaili Bin Azizi,Surash Ramanathan,Sabariah Ismail,Sreenivasan Sasidharan,Mohd I. Mohd. Said,Sharif Mahsufi Mansor
Molecules , 2009, DOI: 10.3390/molecules14103964
Abstract: Studies on the antioxidant and antimicrobial activities of Mitragyna speciosa leaf extracts are lacking. In this study the antioxidant properties of water, methanolic and alkaloid M. speciosa leaf extracts were evaluated using the DPPH (2,2-diphenyl-1- picrylhydrazyl) radical scavenging method. The amount of total phenolics and flavanoid contents were also estimated. The DPPH IC50 values of the aqueous, alkaloid and methanolic extracts were 213.4, 104.81 and 37.08 μg/mL, respectively. The total phenolic content of the aqueous, alkaloid and methanolic extracts were 66.0 mg, 88.4, 105.6 mg GAE/g, respectively, while the total flavanoid were 28.2, 20.0 and 91.1 mg CAE/g respectively. The antioxidant activities were correlated with the total phenolic content. This result suggests that the relatively high antioxidant activity of the methanolic extract compared to aqueous and alkaloid extract could be possibly be due to its high phenolic content. The aqueous, alkaloid and methanolic extracts were screened for antimicrobial activity. The extracts showed antimicrobial activity against Salmonella typhi and Bacillus subtilis. The minimum inhibitory concentrations (MICs) of extracts determined by the broth dilution method ranged from 3.12 to 6.25 mg/mL. The alkaloid extract was found to be most effective against all of the tested organisms.
Morphology and anatomy of the fruit and seed in development of Chorisia speciosa A. St.-Hil. - Bombacaceae
Marzinek, Juliana;Mour？o, Káthia S.M.;
Brazilian Journal of Botany , 2003, DOI: 10.1590/S0100-84042003000100004
Abstract: the structure of the fruit and seed in development of chorisia speciosa are described with the main purpose of clarifying the origin and nature of the hairs that cover the seeds and aiding future taxonomical and ecological studies of the group. the fruit is an ellipsoid loculicide capsule and presents the exocarp formed by 7-10 cells layers, with very thick walls and evident simple pits. a great number of mucilage secretory cavities and ramified vascular bundles, accompanied by fibers, occur in the parenchymatic mesocarp. the endocarp derives from the ventral epidermis of the ovary wall, whose cells undergo a gradual elongation, become lignified, and constitute the trichomes which cover the mature seeds. the fruit aperture occurs by means of a suture evident in the ovarian wall in the middle region of the carpel leaf. anatropous and bitegmic ovules, provided by a hypostase, give rise to campilotropous and bitegmic seeds. the testa is uniseriate, the exotegmen is completely formed by macrosclereids, and mucilage secretory cavities occur in the mesotegmen. the endotegmen, which is differentiated in the endothelium, is crushed in the mature seed. the plicate embryo, which occupies practically the entire seminal cavity, is found between endosperm layers, both being rich in lipids.
Attraction of Astylus variegatus (Germ.) (Coleoptera: Melyridae) by volatile floral attractants
Ventura, Maurício Ursi;Pereira, Tania;Nunes, Daiane Heloisa;Arruda, Iara Cintra de;
Scientia Agricola , 2007, DOI: 10.1590/S0103-90162007000300016
Abstract: the beetle astylus variegatus (germ.) (coleoptera: melyridae) is frequently found in flowers feeding on pollen. responses of a. variegatus to volatile floral attractants were studied in common beans (phaseolus vulgaris l.) fields. traps originally designed to capture diabrotica speciosa (germ.) (coleoptera: chrysomelidae), consisted of plastic bottles (2 l) with 150 holes (5-mm diameter) yellow gold painted and containing inside a plastic strip (3.5 ′ 25 cm) with lagenaria vulgaris (l.) powder (0.28% b cucurbitacin - feeding stimulant and arrestant for diabroticites) sprayed with carbaril insecticide. treatments consisted of 1,4-dimethoxybenzene (one or two dispensers per trap), 1,4-dimethoxybenze + indole, 1,4-dimethoxybenzene + cinnameldehyde and control. volatile average release rates (over ten days) was approximately 32 mg day-1 per dispenser under laboratory conditions. 1,4-dimethoxybenzene-lured traps caught significantly more beetles than the control, three and seven days after trap setting. ten days after the onset of the experiment, there were no differences in number of beetles caught by treatments. captures were higher in the 1,4-dimethoxybenzene + cinnamaldehyde treatment than in 1,4-dimethoxybenzene only in the first assessment. adding indole to 1,4-dimethoxybenzene did not improve beetle captures.
Morphology and anatomy of the fruit and seed in development of Chorisia speciosa A. St.-Hil. - Bombacaceae
Marzinek Juliana,Mour？o Káthia S.M.
Brazilian Journal of Botany , 2003,
Abstract: The structure of the fruit and seed in development of Chorisia speciosa are described with the main purpose of clarifying the origin and nature of the hairs that cover the seeds and aiding future taxonomical and ecological studies of the group. The fruit is an ellipsoid loculicide capsule and presents the exocarp formed by 7-10 cells layers, with very thick walls and evident simple pits. A great number of mucilage secretory cavities and ramified vascular bundles, accompanied by fibers, occur in the parenchymatic mesocarp. The endocarp derives from the ventral epidermis of the ovary wall, whose cells undergo a gradual elongation, become lignified, and constitute the trichomes which cover the mature seeds. The fruit aperture occurs by means of a suture evident in the ovarian wall in the middle region of the carpel leaf. Anatropous and bitegmic ovules, provided by a hypostase, give rise to campilotropous and bitegmic seeds. The testa is uniseriate, the exotegmen is completely formed by macrosclereids, and mucilage secretory cavities occur in the mesotegmen. The endotegmen, which is differentiated in the endothelium, is crushed in the mature seed. The plicate embryo, which occupies practically the entire seminal cavity, is found between endosperm layers, both being rich in lipids.
Cold-Resistant Breeding of Oenothera speciosa Using Silico Ion Implantation  [PDF]
Yan Ma, Yan Lin, Liping Sun, Lina Song, Rongfeng Cui, Yibin Qie
Open Journal of Forestry (OJF) , 2015, DOI: 10.4236/ojf.2015.55047
Abstract: Oenothera speciosa, belonging to thermophilous plant, cannot overwinter in Beijing. To enhance the overwintering rate of Oenothera speciosa, the seeds were treated through silico ion implantation (SII), with five various fluence ranges (1 × 109 - 1 × 1011 ions/cm2) of 40 MeV and four various fluence ranges (1 × 1010 - 5 × 1011 ions/cm2) of 35 MeV, respectively. M1 generations of various SII-treated Oenothera speciosa lines can overwinter, and the highest overwinter rate (41.3%) was observed in Oenothera speciosa lines treated with 35 MeV and fluence 5 × 1010 ions/cm2. M2 and M3 generations of all treated lines were able to overwinter smoothly. The results indicated that SII treatment can enhance the cold-resistance of Oenothera speciosa heritably. Furthermore, physiological indexes including relative electrical conductivity, MDA contents and proline contents of SII-treated Oenothera speciosa pot seedlings were detected after low temperature stress. The results revealed that relative electrical conductivities and MDA contents of M1, M2 and M3 generations of SII-treated Oenothera speciosa plants were lower than that of control, whereas the proline contents were higher than control in the -5°C cold stress. Taken together, the cold resistance of SII-treated Oenothera speciosa plants was improved, which made it possible to be used as a perennial flower in landscaping in Beijing.
Efeito de meios de cultura, concentra？？es de GA3 e pH sobre a germina？？o in vitro de mangabeira (Hancornia speciosa Gomes)
Soares, Fernanda Pereira;Paiva, Renato;Stein, Vanessa Cristina;Nery, Fernanda Carlota;Nogueira, Raírys Cravo;Oliveira, Lenaldo Muniz de;
Ciência e Agrotecnologia , 2009, DOI: 10.1590/S1413-70542009000700025
Abstract: the hancornia speciosa gomes species presents potential for fruit and rubber production. propagation is difficult primarily due, to a reduced seed germination and occurrence of recalcitrant seeds that stimulate the search of rapid and efficient propagation alternatives. in this context, the aim of this work was to study in vitro seed germination conditions in order to produce explants to be used on in vitro culture. the effect of different culture media, sucrose and ga3 concentrations and three ph levels were evaluated. seeds were extracted from mature fruits after being harvested and processed. higher in vitro germination was obtained using wpm and ms/2 media supplemented with 15.0 g l-1, 0.2 mg l-1 ga3 and ph adjusted to 5.8.
Conserva？？o pós-colheita de mangaba (Hancornia speciosa Gomes)
Carnelossi, Marcelo Augusto Gutierrez;Toledo, Waleska Fernanda Ferreira;Souza, Daniella Cecília Lemos;Lira, Moema de Lima;Silva, Gabriel Francisco da;Jalali, Vahideh Rabani R;Viégas, Pedro Roberto de Almeida;
Ciência e Agrotecnologia , 2004, DOI: 10.1590/S1413-70542004000500021
Abstract: the present work had the objective of characterizing physico-chemical parameters of the mangaba fruits, either "fallen" or "of the time", and to study the effect of the storage of mangaba (hancornia speciosa gomes) at different temperatures on its postharvest conservation. the fruits were selected and stored in cold chambers at 6, 18 and 25 ± 2oc. during storage, samples were removed at 3, 5, 7 and 9 days, for determination of vitamin c content, ph, total acidity and soluble solids (obrix) content, water activity, conductivity, resistivity and difusivity. it was verified that "fallen" mangabas presented vitamin c and solid soluble contents superior to the "of the time" fruits. the storage at 6oc was efficient in keeping the physico-chemical properties of "of the time" mangabas, whereas for "fallen" mangabas the physico-chemical properties were maintained for a period of up to three days when submitted to temperatures of 25 and 18oc. a fall of the water activity and increase of the thermal condutivity of mangaba during the period of cold storage was observed. thus, the thermal conductivity, the resistivity and the water activity can be used as parameters to follow postharvest fruits of mangaba when stored under refrigeration.
Alcalóides de flores e folhas de Erythrina speciosa Andrews
Faria, Terezinha de Jesus;Cafêu, Mariana Carrara;Akiyoshi, Gisele;Ferreira, Dalva Trevisan;Gal？o, Olívio Fernandes;Andrei, César Cornélio;Pinge Filho, Phileno;Paiva, Manoel Ronaldo Carvalho;Barbosa, Aneli de Melo;Braz-Filho, Raimundo;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000300004
Abstract: in vitro bioassays with leave extracts of erythrina speciosa showed promising activity against trypanosoma cruzi. from the flowers of e. speciosa two alkaloids were isolated: erysotrine and erythartine. the leaves furnished one alkaloid, nororientaline. the structures were determined on the basis of spectroscopic evidence. this is the first report about the investigation of alkaloids in flowers and leaves of this species, as well the first report of nororientaline occurrence in this plant.
Desenvolvimento e qualidade nutricional de mudas de mangabeiras cultivadas em substratos contendo fibra de coco e aduba？？o fosfatada
Dias, Thiago Jardelino;Pereira, Walter Esfrain;Cavalcante, Lourival Ferreira;Raposo, Roberto Wagner Cavalcanti;Freire, José Lucínio de Oliveira;
Revista Brasileira de Fruticultura , 2009, DOI: 10.1590/S0100-29452009000200028
Abstract: in order to produce good quality seedlings it is necessary to use a mixture that presents appropriate physical, chemical and biological properties, which supplies the necessary conditions for the germination and the seedling's establishment. this experiment was carried out at the agricultural sciences center, paraíba federal university (brazil), whose objective was to evaluate the growth and the mineral composition of hancornia speciosa seedlings in substrata composed by concentrations of coconut fiber from 0% to 40%, manure bovine from 0% to 25%, soil from 25% to 70%, sand 15% and triple superphosphate between 0 and 11 g dm-3. the soil and coconut fiber had beneficial effects on the h. speciosa seedlings with the increase of its concentrations in the mixture. the addition of the manure and the doses of triple superphosphate provoked a decrease in the matter and in the foliate area in the h. speciosa seedlings. there was an increase of the nutrients content in the seedlings in which there was an increase of the manure concentration in the mixture. it is recommended to use the concentrations of 14% of manure, 56% of soil, 15% of coconut fiber, 15% of sand and 4 g dm-3 of triple superphosphate, for the maximum estimated values of growth and nutritional composition.
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