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Pesquisa : B01.650.940.800.575.912.250.789 [Categoria DeCS]
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  1 / 21 MEDLINE  
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[PMID]:29287103
[Au] Autor:Papini A; Signorini MA; Foggi B; Della Giovampaola E; Ongaro L; Vivona L; Santosuosso U; Tani C; Bruschi P
[Ad] Endereço:University of Florence, Dept. Biology (BIO), Florence, Italy.
[Ti] Título:History vs. legend: Retracing invasion and spread of Oxalis pes-caprae L. in Europe and the Mediterranean area.
[So] Source:PLoS One;12(12):e0190237, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Oxalis pes-caprae L. is a South African geophyte that behaves as an invasive in the eurimediterranean area. According to a long-established hypothesis, O. pes-caprae may have invaded Europe and the Mediterranean area starting from a single plant introduced in the Botanical Garden of Malta at the beginning of the 19th century. The aim of this work was to test this hypothesis, to track the arrival of O. pes-caprae in different countries of the Euro-Mediterranean area and to understand the pathways of spreading and particularly its starting point(s). Historical data attesting the presence of the plant in the whole Euro-Mediterranean region were collected from different sources: herbarium specimens, Floras and other botanical papers, plant lists of gardens, catalogs of plant nurseries and plant dealers. First records of the plant (both cultivated and wild) for each Territorial Unit (3rd level of NUTS) were selected and used to draw up a diachronic map and an animated graphic. Both documents clearly show that oldest records are scattered throughout the whole area, proving that the plant arrived in Europe and in the Mediterranean region more times independently and that its spreading started in different times from several different centers of invasion. Botanical gardens and other public or private gardens, nurseries and plant dealers, and above all seaside towns and harbors seemingly played a strategic role as a source of either intentional and unintentional introduction or spread. A geographic profiling analysis was performed to analyse the data. We used also techniques (Silhouette, Kmeans and Voronoi tessellation) capable of verifying the presence of more than one independent clusters of data on the basis of their geographical distribution. Microsatellites were employed for a preliminary analysis of genetic variation in the Mediterranean. Even if the sampling was insufficient, particularly among the populations of the original area, our data supported three main groups of populations, one of them corresponding to the central group of populations identified by GP analysis, and the other two corresponding, respectively, to the western and the eastern cluster of data. The most probable areas of origin of the invasion in the three clusters of observations are characterized by the presence of localities where the invasive plant was cultivated, with the exception of the Iberian cluster of observation where the observations in the field predate the data about known cultivation localities. Alternative possible reasons are also suggested, to explain the current prevalence of pentaploid short-styled plants in the Euro-Mediterranean area.
[Mh] Termos MeSH primário: Oxalidaceae/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Europa (Continente)
Região do Mediterrâneo
Filogeografia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180207
[Lr] Data última revisão:
180207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171230
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190237


  2 / 21 MEDLINE  
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[PMID]:27770776
[Au] Autor:Jooste M; Dreyer LL; Oberlander KC
[Ad] Endereço:Department of Botany and Zoology, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa. mich.jooste.m@gmail.com.
[Ti] Título:The phylogenetic significance of leaf anatomical traits of southern African Oxalis.
[So] Source:BMC Evol Biol;16(1):225, 2016 10 22.
[Is] ISSN:1471-2148
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The southern African Oxalis radiation is extremely morphologically variable. Despite recent progress in the phylogenetics of the genus, there are few morphological synapomorphies supporting DNA-based clades. Leaflet anatomy can provide an understudied and potentially valuable source of information on the evolutionary history and systematics of this lineage. Fifty-nine leaflet anatomical traits of 109 southern African Oxalis species were assessed in search of phylogenetically significant characters that delineate clades. RESULTS: A combination of 6 leaflet anatomical traits (stomatal position, adaxial epidermal cells, abaxial epidermal cells, mesophyll, sheath around vascular tissue, degree of leaflet conduplication) clearly support various clades defined by previous DNA-based phylogenetic work. Other, mostly continuous leaflet anatomical traits were highly variable and showed less phylogenetic pattern. CONCLUSIONS: Major and unexpected findings include the transition from ancestral hypostomatic leaflets to adaxially-located stomata in the vast majority of southern African Oxalis, the loss of semi-swollen AB epidermal cells and the gain of swollen adaxial and abaxial epidermal cells in selected clades, and multiple changes from ancestral bifacial mesophyll to isobilateral or homogenous mesophyll types. The information gathered in this study will aid in the taxonomic revision of this speciose member of the Greater Cape Floristic Region and provide a basis for future hypotheses regarding its radiation.
[Mh] Termos MeSH primário: Oxalidaceae/anatomia & histologia
Filogenia
Folhas de Planta/anatomia & histologia
[Mh] Termos MeSH secundário: Evolução Biológica
Duplicação Gênica
Células do Mesofilo/citologia
Oxalidaceae/genética
Fenótipo
Folhas de Planta/citologia
Folhas de Planta/genética
Estômatos de Plantas/citologia
Feixe Vascular de Plantas/citologia
Característica Quantitativa Herdável
Tricomas/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1708
[Cu] Atualização por classe:180128
[Lr] Data última revisão:
180128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


  3 / 21 MEDLINE  
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[PMID]:28110267
[Au] Autor:Gandolfo MA; Hermsen EJ
[Ad] Endereço:L. H. Bailey Hortorium, Plant Biology Section, School of Integrative Plant Science, 412 Mann Library Building, Cornell University, Ithaca, NY 14853, USA.
[Ti] Título:Ceratopetalum (Cunoniaceae) fruits of Australasian affinity from the early Eocene Laguna del Hunco flora, Patagonia, Argentina.
[So] Source:Ann Bot;119(4):507-516, 2017 Mar 01.
[Is] ISSN:1095-8290
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Background and Aims: Radially symmetrical, five-winged fossil fruits from the highly diverse early Eocene Laguna del Hunco flora of Chubut Province, Patagonia, Argentina, are named, described and illustrated. The main goals are to assess the affinities of the fossils and to place them in an evolutionary, palaeoecological and biogeographic context. Methods: Specimens of fossil fruits were collected from the Tufolitas Laguna del Hunco. They were prepared, photographed and compared with similar extant and fossil fruits using published literature. Their structure was also evaluated by comparing them with that of modern Ceratopetalum (Cunoniaceae) fruits through examination of herbarium specimens. Key Results: The Laguna del Hunco fossil fruits share the diagnostic features that characterize modern and fossil Ceratopetalum (symmetry, number of fruit wings, presence of a conspicuous floral nectary and overall venation pattern). The pattern of the minor wing (sepal) veins observed in the Patagonian fossil fruits is different from that of modern and previously described fossil Ceratopetalum fruits; therefore, a new fossil species is recognized. An apomorphy (absence of petals) suggests that the fossils belong within crown-group Ceratopetalum . Conclusions: The Patagonian fossil fruits are the oldest known record for Ceratopetalum . Because the affinities, provenance and age of the fossils are so well established, this new Ceratopetalum fossil species is an excellent candidate for use as a calibration point in divergence dating studies of the family Cunoniaceae. It represents the only record of Ceratopetalum outside Australasia, and further corroborates the biogeographic connection between the Laguna del Hunco flora and ancient and modern floras of the Australasian region.
[Mh] Termos MeSH primário: Fósseis/anatomia & histologia
Frutas/anatomia & histologia
Oxalidaceae/anatomia & histologia
[Mh] Termos MeSH secundário: Argentina
Evolução Biológica
Flores/anatomia & histologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170831
[Lr] Data última revisão:
170831
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170123
[St] Status:MEDLINE
[do] DOI:10.1093/aob/mcw283


  4 / 21 MEDLINE  
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[PMID]:27497592
[Au] Autor:Tsolakis H; Principato D; Jordà Palomero R; Lombardo A
[Ad] Endereço:Dipartimento di Scienze Agrarie e Forestali (SAF), University of Palermo, Viale delle Scienze Ed. 5, 90128, Palermo, Italy. haralabos.tsolakis@unipa.it.
[Ti] Título:Biological and life table parameters of Typhlodromus laurentii and Iphiseius degenerans (Acari, Phytoseiidae) fed on Panonychus citri and pollen of Oxalis pes-caprae under laboratory conditions.
[So] Source:Exp Appl Acarol;70(2):205-18, 2016 Oct.
[Is] ISSN:1572-9702
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Typhlodromus laurentii and Iphiseius degenerans are two generalist phytoseiid mites, broadly spread in the Mediterranean area, especially in citrus orchards. In the present work we report results on various biological and life table parameters of the two phytoseiids, fed on pollen of Oxalis pes-caprae and various stages of the tetranychid Panonychus citri. Iphiseius degenerans had the shortest post embryonic development (6.53 days), the highest oviposition rate (1.83 eggs/female/day) and the shortest mean time between eggs laid (0.55 day) on Oxalis pollen, whereas the two food types did not influence these parameters in T. laurentii. However, Oxalis pollen showed a positive effect on the survivorship of the latter phytoseiid, with a median life time (LT50) of 44.51 days, which was two times longer than that registered on prey with the same phytoseiid, and on both food types with I. degenerans. This latter species had a better performance on the pollen (rm = 0.243, λ = 1.275, Ro = 22.88, DT = 2.85) than on prey (rm = 0.182, λ = 1.199, Ro = 17.43, DT = 3.81). On the other hand, the pollen influenced the net reproductive rate (25.43 females/female) of T. laurentii positively but showed the same effect as the prey on the other demographic parameters. Our results improve knowledge on the feeding behaviour of the above mentioned phytoseiids on two food sources that could represent the main possibility to maintain a consistent population of these predators during winter. Moreover, both phytoseiids were shown to be good biocontrol candidates of P. citri populations.
[Mh] Termos MeSH primário: Ração Animal/análise
Ácaros/fisiologia
Controle Biológico de Vetores/métodos
Pólen/química
[Mh] Termos MeSH secundário: Animais
Dieta
Feminino
Larva/crescimento & desenvolvimento
Larva/fisiologia
Masculino
Ácaros/crescimento & desenvolvimento
Ninfa/crescimento & desenvolvimento
Ninfa/fisiologia
Oxalidaceae/química
Reprodução
Tetranychidae
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1702
[Cu] Atualização por classe:171018
[Lr] Data última revisão:
171018
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160808
[St] Status:MEDLINE
[do] DOI:10.1007/s10493-016-0076-8


  5 / 21 MEDLINE  
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[PMID]:27260410
[Au] Autor:Austarheim I; Pham AT; Nguyen C; Zou YF; Diallo D; Malterud KE; Wangensteen H
[Ad] Endereço:Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway. Electronic address: ingvilau@farmasi.uio.no.
[Ti] Título:Antiplasmodial, anti-complement and anti-inflammatory in vitro effects of Biophytum umbraculum Welw. traditionally used against cerebral malaria in Mali.
[So] Source:J Ethnopharmacol;190:159-64, 2016 Aug 22.
[Is] ISSN:1872-7573
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:ETHNOPHARMACOLOGICAL RELEVANCE: Biophytum umbraculum Welw. (Oxalidaceae) is a highly valued African medicinal plant used for treatment of cerebral malaria, a critical complication of falciparum malaria. AIM OF THE STUDY: To provide additional information about traditional use of B. umbraculum and to test plant extracts and isolated compounds for in vitro activities related to cerebral malaria. MATERIALS AND METHODS: The traditional practitioners were questioned about indication, mode of processing/application, dosage and local name of B. umbraculum. Organic extracts and some main constituents of the plant were investigated for anti-malaria, anti-complement activity and inhibition of NO secretion in a RAW 264.7 cell line. RESULTS: Treatment of cerebral malaria was the main use of B. umbraculum (fidelity level 56%). The ethyl acetate extract showed anti-complement activity (ICH50 5.7±1.6µg/ml), inhibition of macrophage activation (IC50 16.4±1.3µg/ml) and in vitro antiplasmodial activity (IC50 K1 5.6±0.13µg/ml, IC50 NF54 6.7±0.03µg/ml). The main constituents (flavone C-glycosides) did not contribute to the activity of the extract. CONCLUSION: Inhibition of complement activation and anti-inflammatory activity of B. umbraculum observed in this study might be possible targets for adjunctive therapy in cerebral malaria together with its antiplasmodial activity. However, clinical trials are necessary to evaluate the activity due to the complex pathogenesis of cerebral malaria.
[Mh] Termos MeSH primário: Anti-Inflamatórios/farmacologia
Antimaláricos/farmacologia
Inativadores do Complemento/farmacologia
Macrófagos/efeitos dos fármacos
Malária Cerebral/prevenção & controle
Malária Falciparum/prevenção & controle
Oxalidaceae/química
Extratos Vegetais/farmacologia
Plasmodium falciparum/efeitos dos fármacos
[Mh] Termos MeSH secundário: Acetatos/química
Animais
Anti-Inflamatórios/isolamento & purificação
Antimaláricos/isolamento & purificação
Inativadores do Complemento/isolamento & purificação
Relação Dose-Resposta a Droga
Etnofarmacologia
Seres Humanos
Concentração Inibidora 50
Lipopolissacarídeos/farmacologia
Ativação de Macrófagos/efeitos dos fármacos
Macrófagos/imunologia
Macrófagos/metabolismo
Macrófagos/parasitologia
Malária Cerebral/imunologia
Malária Cerebral/metabolismo
Malária Cerebral/parasitologia
Malária Falciparum/imunologia
Malária Falciparum/metabolismo
Mali
Medicina Tradicional Africana
Camundongos
Óxido Nítrico/metabolismo
Fitoterapia
Componentes Aéreos da Planta/química
Extratos Vegetais/isolamento & purificação
Plantas Medicinais
Plasmodium falciparum/crescimento & desenvolvimento
Células RAW 264.7
Solventes/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (Anti-Inflammatory Agents); 0 (Antimalarials); 0 (Complement Inactivating Agents); 0 (Lipopolysaccharides); 0 (Plant Extracts); 0 (Solvents); 31C4KY9ESH (Nitric Oxide); 76845O8NMZ (ethyl acetate)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170418
[Lr] Data última revisão:
170418
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160605
[St] Status:MEDLINE


  6 / 21 MEDLINE  
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[PMID]:27188871
[Au] Autor:Salahuddin H; Mansoor Q; Batool R; Farooqi AA; Mahmood T; Ismail M
[Ad] Endereço:Institute of Biomedical and Genetic Engineering Islamabad Pakistan.
[Ti] Título:Anticancer activity of Cynodon dactylon and Oxalis corniculata on Hep2 cell line.
[So] Source:Cell Mol Biol (Noisy-le-grand);62(5):60-3, 2016 Apr 30.
[Is] ISSN:1165-158X
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:Bioactive chemicals isolated from plants have attracted considerable attention over the years and overwhelmingly increasing laboratory findings are emphasizing on tumor suppressing properties of these natural agents in genetically and chemically induced animal carcinogenesis models. We studied in vitro anticancer activity of organic extracts of Cynodon dactylon and Oxalis corniculata on Hep2 cell line and it was compared with normal human corneal epithelial cells (HCEC) by using MTT assay. Real Time PCR was conducted for p53 and PTEN genes in treated cancer cell line. DNA fragmentation assay was also carried out to note DNA damaging effects of the extracts. The minimally effective concentration of ethanolic extract of Cynodon dactylon and methanolic extract of Oxalis corniculata that was nontoxic to HCEC but toxic to Hep2 was recorded (IC50) at a concentration of 0.042mg/ml (49.48 % cell death) and 0.048mg/ml (47.93% cell death) respectively, which was comparable to the positive control. Our results indicated dose dependent increase in cell death. P53 and PTEN did not show significant increase in treated cell line. Moreover, DNA damaging effects were also not detected in treated cancer cell line. Anticancer activity of these plants on the cancer cell line showed the presence of anticancer components which should be characterized to be used as anticancer therapy.
[Mh] Termos MeSH primário: Antineoplásicos/farmacologia
Cynodon/química
Oxalidaceae/química
Extratos Vegetais/farmacologia
[Mh] Termos MeSH secundário: Caspases/metabolismo
Linhagem Celular Tumoral
Dano ao DNA
Seres Humanos
PTEN Fosfo-Hidrolase/genética
PTEN Fosfo-Hidrolase/metabolismo
Fitoterapia
Reação em Cadeia da Polimerase em Tempo Real
Transdução de Sinais/efeitos dos fármacos
Proteína Supressora de Tumor p53/genética
Proteína Supressora de Tumor p53/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents); 0 (Plant Extracts); 0 (Tumor Suppressor Protein p53); EC 3.1.3.67 (PTEN Phosphohydrolase); EC 3.4.22.- (Caspases)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170123
[Lr] Data última revisão:
170123
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160519
[St] Status:MEDLINE


  7 / 21 MEDLINE  
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[PMID]:27086877
[Au] Autor:Lehmann MM; Wegener F; Werner RA; Werner C
[Ad] Endereço:Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), Villigen, Switzerland.
[Ti] Título:Diel variations in carbon isotopic composition and concentration of organic acids and their impact on plant dark respiration in different species.
[So] Source:Plant Biol (Stuttg);18(5):776-84, 2016 Sep.
[Is] ISSN:1438-8677
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Leaf respiration in the dark and its C isotopic composition (δ(13) CR ) contain information about internal metabolic processes and respiratory substrates. δ(13) CR is known to be less negative compared to potential respiratory substrates, in particular shortly after darkening during light enhanced dark respiration (LEDR). This phenomenon might be driven by respiration of accumulated (13) C-enriched organic acids, however, studies simultaneously measuring δ(13) CR during LEDR and potential respiratory substrates are rare. We determined δ(13) CR and respiration rates (R) during LEDR, as well as δ(13) C and concentrations of potential respiratory substrates using compound-specific isotope analyses. The measurements were conducted throughout the diel cycle in several plant species under different environmental conditions. δ(13) CR and R patterns during LEDR were strongly species-specific and showed an initial peak, which was followed by a progressive decrease in both values. The species-specific differences in δ(13) CR and R during LEDR may be partially explained by the isotopic composition of organic acids (e.g., oxalate, isocitrate, quinate, shikimate, malate), which were (13) C-enriched compared to other respiratory substrates (e.g., sugars and amino acids). However, the diel variations in both δ(13) C and concentrations of the organic acids were generally low. Thus, additional factors such as the heterogeneous isotope distribution in organic acids and the relative contribution of the organic acids to respiration are required to explain the strong (13) C enrichment in leaf dark-respired CO2 .
[Mh] Termos MeSH primário: Ácidos Carboxílicos/metabolismo
Ritmo Circadiano
Cistaceae/fisiologia
Ericaceae/fisiologia
Oxalidaceae/fisiologia
Salvia officinalis/fisiologia
[Mh] Termos MeSH secundário: Dióxido de Carbono/metabolismo
Isótopos de Carbono/análise
Respiração Celular
Cistaceae/efeitos da radiação
Escuridão
Meio Ambiente
Ericaceae/efeitos da radiação
Luz
Malatos/metabolismo
Oxalidaceae/efeitos da radiação
Folhas de Planta/metabolismo
Folhas de Planta/efeitos da radiação
Salvia officinalis/efeitos da radiação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Carbon Isotopes); 0 (Carboxylic Acids); 0 (Malates); 142M471B3J (Carbon Dioxide); 817L1N4CKP (malic acid)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160419
[St] Status:MEDLINE
[do] DOI:10.1111/plb.12464


  8 / 21 MEDLINE  
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[PMID]:26577756
[Au] Autor:Schmickl R; Liston A; Zeisek V; Oberlander K; Weitemier K; Straub SC; Cronn RC; Dreyer LL; Suda J
[Ad] Endereço:Institute of Botany, The Czech Academy of Sciences, Zámek 1, 252 43, Pruhonice, Czech Republic.
[Ti] Título:Phylogenetic marker development for target enrichment from transcriptome and genome skim data: the pipeline and its application in southern African Oxalis (Oxalidaceae).
[So] Source:Mol Ecol Resour;16(5):1124-35, 2016 Sep.
[Is] ISSN:1755-0998
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phylogenetics benefits from using a large number of putatively independent nuclear loci and their combination with other sources of information, such as the plastid and mitochondrial genomes. To facilitate the selection of orthologous low-copy nuclear (LCN) loci for phylogenetics in nonmodel organisms, we created an automated and interactive script to select hundreds of LCN loci by a comparison between transcriptome and genome skim data. We used our script to obtain LCN genes for southern African Oxalis (Oxalidaceae), a speciose plant lineage in the Greater Cape Floristic Region. This resulted in 1164 LCN genes greater than 600 bp. Using target enrichment combined with genome skimming (Hyb-Seq), we obtained on average 1141 LCN loci, nearly the whole plastid genome and the nrDNA cistron from 23 southern African Oxalis species. Despite a wide range of gene trees, the phylogeny based on the LCN genes was very robust, as retrieved through various gene and species tree reconstruction methods as well as concatenation. Cytonuclear discordance was strong. This indicates that organellar phylogenies alone are unlikely to represent the species tree and stresses the utility of Hyb-Seq in phylogenetics.
[Mh] Termos MeSH primário: Marcadores Genéticos
Variação Genética
Técnicas de Genotipagem/métodos
Oxalidaceae/classificação
Oxalidaceae/genética
[Mh] Termos MeSH secundário: África Austral
Genoma
Filogenia
Análise de Sequência de DNA
Transcriptoma
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Genetic Markers)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170403
[Lr] Data última revisão:
170403
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151119
[St] Status:MEDLINE
[do] DOI:10.1111/1755-0998.12487


  9 / 21 MEDLINE  
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[PMID]:26572446
[Au] Autor:López de Dicastillo C; Rodríguez F; Guarda A; Galotto MJ
[Ad] Endereço:Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Food Packaging Laboratory (LABEN-CHILE), Department of Science and Food Technology, Faculty of Technology, University of Santiago de Chile, Santiago, Chile. Electronic address: analopez.dediscastillo@usach.cl.
[Ti] Título:Antioxidant films based on cross-linked methyl cellulose and native Chilean berry for food packaging applications.
[So] Source:Carbohydr Polym;136:1052-60, 2016 Jan 20.
[Is] ISSN:1879-1344
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Development of antioxidant and antimicrobial active food packaging materials based on biodegradable polymer and natural plant extracts has numerous advantages as reduction of synthetic additives into the food, reduction of plastic waste, and food protection against microorganisms and oxidation reactions. In this way, active films based on methylcellulose (MC) and maqui (Aristotelia chilensis) berry fruit extract, as a source of antioxidants agents, were studied. On the other hand, due to the high water affinity of MC, this polymer was firstly cross-linked with glutaraldehyde (GA) at different concentrations. The results showed that the addition of GA decreased water solubility, swelling, water vapor permeability of MC films, and the release of antioxidant substances from the active materials increased with the concentration of GA. Natural extract and active cross-linked films were characterized in order to obtain the optimal formulation with the highest antioxidant activity and the best physical properties for latter active food packaging application.
[Mh] Termos MeSH primário: Antioxidantes/química
Embalagem de Alimentos/métodos
Metilcelulose/química
Oxalidaceae/química
Extratos Vegetais/química
[Mh] Termos MeSH secundário: Reagentes para Ligações Cruzadas/química
Glutaral/química
Interações Hidrofóbicas e Hidrofílicas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; REVIEW
[Nm] Nome de substância:
0 (Antioxidants); 0 (Cross-Linking Reagents); 0 (Plant Extracts); 9004-67-5 (Methylcellulose); T3C89M417N (Glutaral)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:151117
[Lr] Data última revisão:
151117
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151118
[St] Status:MEDLINE


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[PMID]:25924801
[Au] Autor:Weller SG; Sakai AK; Gray T; Weber JJ; Tsyusko OV; Domínguez CA; Fornoni J; Molina-Freaner FE
[Ad] Endereço:Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, USA.
[Ti] Título:Variation in heterostylous breeding systems in neighbouring populations of Oxalis alpina (Oxalidaceae).
[So] Source:Plant Biol (Stuttg);18(1):104-10, 2016 Jan.
[Is] ISSN:1438-8677
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:UNLABELLED: The heterostylous reproductive system of Oxalis alpina in the Galiuro Mts. of Arizona was investigated using field surveys, controlled crosses in the greenhouse and measurements of reproductive morphs. Although populations in the Pinaleño Mts. to the immediate east and in the Santa Catalina Mts. to the immediate west have derived distylous reproductive systems, tristyly, the ancestral reproductive system in O. alpina, has been retained in the Galiuro Mts. POPULATION: Tristylous incompatibility relationships in the Galiuro population are modified from the ancestral condition, with significant loss of incompatibility differentiation between stamen whorls of both short- and long-styled morphs. Morphological adjustments of anther positions in the Galiuro population of O. alpina match those expected in light of incompatibility modification, with divergence of the mid-level anthers away from the position of the mid stigmas of the mid-styled morph. The occurrence of tristyly in an area of Arizona where distyly is found in adjacent mountain ranges is particularly remarkable, and indicates both the isolation of populations restricted to the upper elevations of these mountain ranges and variation in the tempo of evolution over short geographic distances.
[Mh] Termos MeSH primário: Oxalidaceae/fisiologia
[Mh] Termos MeSH secundário: Arizona
Evolução Biológica
Flores/fisiologia
Melhoramento Vegetal
Polinização
Reprodução/fisiologia
Sementes/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1610
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150501
[St] Status:MEDLINE
[do] DOI:10.1111/plb.12340



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