SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

NEVES, M. A. C..

Promoveu-se um estudo da viabilidade do emprego de tucupi, suco fermentado extraído da raiz de mandioca (Manihot esculenta), como coagulante na produção de borracha do tipo folha defumada, em substituiçaõ ao ácido acético, principalmente nas áreas de seringais nativos. Embora os resultados tenham comprovado a viabilidade de seu uso, ressalta-se, porém, a necessidade de submetê-lo a um tratamento prévio para maior segurança no que se refere a preservação da qualidade do produto final.

Impermeabilização de tocos de seringueira de raiz nua com latex puro.

Palavras-chave: Brasil; Amazonas; Coagulating.; Coagulação; Latex; Seringueira; Tucupi..

Ano: 1985

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665343

ALVES, R. N. B.; PEREIRA, S. N..

Visando reduzir o indice de mortalidade, pela desidratação, de tocos de seringueira (Hevea brasiliensis Muell. Arg.) de raiz nua plantados em campo, pesquisas tem sido intensificadas com o objetivo de determinar metodos de impermeabilização de tocos mais eficientes que o convencional, que consiste no pincelamento da extremidade biselada do toco com tinta oleo diluida. A desvantagem desse método e a ocorrencia de elevados indices de mortalidade em campo, que podem chegar ate 60%, quando logo após ao plantio ocorrem veranicos superiores a 10 dias.

Tipo: Outras publicações técnicas (INFOTECA-E)

Palavras-chave: Rubber tree.; Hevea Brasiliensis; Latex; Seringueira..

Ano: 1984

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/341770

Técnica de preparo do CVP em placas finas defumadas.

MORAES, V. H. F.; CONCEIÇÃO, H. E. O. da.

Testou-se uma nova concepção de preparo do cernambi virgem prensado (CVP), que se verificou, posteriormente, guardar semelhança com o preparo dos antigos slabs do Extremo-Oriente. Como critério básico para orientar o trabalho, adotou-se o princípio de que o método a ser desenvolvido deveria ser suficientemente simples, de fácil manejo, e reduzir ao mínimo as necessidades de insumos físicos não disponíveis localmente. Assim, foram descartadas, por exemplo, as alternativas a base de adição de produtos químicos comerciais incorporados ao látex por ocasião da sangria.

Estimulação da produção de látex em seringais nativos.

Palavras-chave: Cernanbi virgem prensado; CVP; Brasil; Amazonas; Production.; Borracha; Hevea Brasiliensis; Latex; Produção; Seringueira.; Rubber..

Ano: 1978

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665332

MORAES, V. H. F..

Com a descoberta do efeito estimulante dos oleos vegetais, que contem acidos graxos insaturados, particularmente o acido linoleico, determinou-se um metodo de estimulacao, cujas respostas sao inferiores as obtidas com Ethrel, mas com vantagens obvias discutidas neste trabalho.

Palavras-chave: Brasil; Amazonas; Rubber tree; Production; Stimulants.; Estimulante de Crescimento Vegetal; Hevea Brasiliensis; Latex; Produção; Seringueira..

Ano: 1978

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665318

Fisiologia: apostila.

Borrachas naturais brasileiras. IV. Borracha de maniçoba.

MORAES, V. H. de F..

Os objetivos básicos deste segmento do Curso de Heveicultura são o de tornar clara a compreensão das razões fisiológicas de certo número de práticas de manejo e exploração da cultura e, desse modo, não apenas contribuir para melhor fixar a aprendizagem dessas práticas, como ajudar na avaliação dos limites da condições específicas, em cada caso, para mais eficiente aplicabilidade, ou na escolha lógica de soluções alternativas. O conhecimento que se pretende transmitir deverá servir também ao propósito da rejeição de conclusões incompativeis com a fisiologia da planta e, em contrapartida, ajudar a criatividade na formulação de novas soluções.

Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)

Palavras-chave: Fenologia; Fisiologia; Latex; Seringueira.

Ano: 1980

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/678156

WISNIEWSKI, A.; MELO, C. F. M. de.

bitstream/item/55263/1/CPATU-DOC-21.pdf

Tipo: Documentos (INFOTECA-E)

Palavras-chave: Borracha natural; Característica; Planta lactifera; Elastomero; Brasil; Natural rubber; Characteristic; Lactiferous plant; Analysis; Elastomer.; Análise; Latex; Maniçoba; Tecnologia.; Manihot; Technology..

Ano: 1983

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/388001

Ocorrência de distúrbio fisiológico em seringal adulto no Estado de Rondônia.

LIMA, M. I. P. M.; LISBOA, S. de M..

Em 1994, na Estacao Experimental da UEPAE Porto Velho e em areas de produtores, plantas de seringueira apresentavam rachaduras na regiao do coleto. No local afetado havia acumulo de latex coagulado e o tecido necrosado atingiu a casca e, consequentemente, os vasos laticiferos, sem, contudo, danificar o lenho. O diagnostico de laboratorio revelou nao existencia de microrganismos patogenicos e inicio de cicatrizacao natural dos tecidos, descartando a possibilidade de doenca. O problema parece ser de ordem fisiologica, pois o porta-enxerto sofreu rachaduras e exsudacao do latex, o mal nao foi seletivo. Tal fato poderia ser explicado pelo acrescimo do volume de producao do latex em periodo chuvoso. Recomenda-se inspecao periodica nos seringais e pincelamento...

Observações sobre a extração de borracha de sapium, de balata de massaranduba e de outras gomas afins.

Palavras-chave: Brasil; Rondonia; Rubber tree; Species; Disturbance; Distúrbio Fisiológico; Espécie; Hevea; Latex; Seringueira; Brazil; Physiology.

Ano: 1986

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665281

Making regression tables simplified

MONTEIRO, F. P..

bitstream/item/197868/1/FL00298.pdf

Tipo: Outras publicações técnicas (INFOTECA-E)

Palavras-chave: Sepium; Massaranduba; Brasil; Balata; Borracha; Extração; Latex; Murupita; Amazonia; Extraction; Rubber.

Ano: 1943

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374265

AgEcon

Jann, Ben.

estout, introduced by Jann (Stata Journal 5: 288–308), is a useful tool for producing regression tables from stored estimates. However, its syntax is relatively complex and commands may turn out long even for simple tables. Furthermore, having to store the estimates beforehand can be cumbersome. To facilitate the production of regression tables, I therefore present here two new commands called eststo and esttab. eststo is a wrapper for official Stata’s estimates store and simplifies the storing of estimation results for tabulation. esttab, on the other hand, is a wrapper for estout and simplifies compiling nice-looking tables from the stored estimates without much typing. I also provide updates to estout and estadd.

Tipo: Article

Palavras-chave: Csv; Estadd; Estimates; Estout; Eststo; Esttab; Excel; Html; Latex; Regression table; Rtf; Word; Research Methods/ Statistical Methods.

Ano: 2007

URL: http://purl.umn.edu/119271

Making regression tables from stored estimates

AgEcon

Jann, Ben.

Organizing and archiving statistical results and processing a subset of those results for publication are important and often underestimated issues in conducting statistical analyses. Because automation of these tasks is often poor, processing results produced by statistical packages is quite laborious and vulnerable to error. I will therefore present a new package called estout that facilitates and automates some of these tasks. This new command can be used to produce regression tables for use with spreadsheets, LaTeX, HTML, or word processors. For example, the results for multiple models can be organized in spreadsheets and can thus be archived in an orderly manner. Alternatively, the results can be directly saved as a publication-ready table for...

Tipo: Journal Article

Palavras-chave: Estout; Estoutdef; Estadd; Estimates; Regression table; Latex; Html; Research Methods/ Statistical Methods.

Ano: 2005

URL: http://purl.umn.edu/117522

การทดสอบความชอบในการเข้าทำลายของด้วงงวงมันเทศ (Cylas formicarius F.) บนมันเทศพันธุ์ต่างๆ

Thai Agricultural

Jarongsak Pumnuan; On-uma Rungnoi; Lampan Khurnpoon.

Damaging observation in term of preference of sweet potato weevil (Cylas formicarius F.) on 219 varieties of sweet potato was conducted at Pijit Agricultural Research and Development Center, Pijit province, as well as laboratory preference test using no choice method, the relationship among infestation level, sweet potato color, %dried weight latex, %dried weight tube and containing of phenolic compound were also conducted. The result showed that, the sweet potato weevil infested various colors of sweet potatoes with non-statistically significant differences at 95%. Out of 14 varieties were infested with low level, less than 37.5%, such as Edok, Triyoke, Pakan-2, Khai Trad, Khai Nakorn-2, Kanlasin, Lheungbanlung, Khai Chaingmai, Banyang, Banyang-9, S0183,...

Tipo: Collection

Palavras-chave: Sweet potato; Sweet potato weevil; Latex; Phenolic; Resistant; มันเทศ; แมลงศัตรูพืช; ด้วงงวงมันเทศ; ฟีนอลิก; ความต้านทานต่อแมลง; น้ำหนักน้ำยางแห้ง; การเข้าทำลาย; สีของหัวมันเทศ; น้ำหนักหัวมันแห้ง; การปรับปรุงพันธุ์; พันธุ์.

Ano: 2011

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5161

Contribution to the study of Himatanthus sucuuba: latex macromolecule, microelements and carbohydrates

Acta Amazonica

SILVA,Jefferson Rocha de A.; AMARAL,Ana Claudia F.; SIANI,Antonio C.; REZENDE,Claudia M.; FELCMAN,Judith; PINTO,Angelo C..

The polymeric material in the latex of Himatanthus sucuuba (Spruce) Woodson was identified by spectroscopic methods as cis-polyisoprene (Mn = 192; Mw = 571; Mw/ Mn = 2.97). ICP-MS analysis of microelements in the aqueous phase showed the most abundant to be Ca (354 μg/g) and Mg (250 μg/g). Carbohydrate analysis of the aqueous phase by HPLC-PAD showed arabinose, glucose, xylose, rhamnose and galactose to be the predominant saccharides.

Chemical constituents of apolar fractions from fruit latex of twelve Clusia species (Clusiaceae)

Palavras-chave: Apocynaceae; Himatanthus; Latex; Cis-polyisoprene; Microelements; Carbohydrates.

Ano: 2003

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672003000100105

Anais da ABC (AABC)

CAMARA,CLAUDIO A.G. DA; MARSAIOLI,ANITA J.; BITTRICH,VOLKER.

Abstract The apolar fractions components of fruit latex of twelve species of Clusia belonging to four different taxonomic sections were examined by GC-MS. The latex of Clusia is characterised by large amounts of sesquiterpene hydrocarbons as major constituents like germacrene D: C. paralicola (44.28 %), C. criuva subsp. criuva (29.03 %); β-caryophyllene: C. fluminensis (35.61 %), C. lanceolata (36.39 %), C. hilariana (58.10 %); α-trans-bergamontene: C. spirictus-sanctensis (36.30 %); α-bulnesene: C. weddelliana (25.61 %); bicyclogermacrene: C. panapanari (25.93 %) and trans-β-farnesene: C. nemorosa (24.63 %), while C. grandiflora is composed of 42.16 % monoterpene hydrocarbons. Verbenone (31.91 %) was the major component. In contrast, C. rosea, C....

Involvement of mast cells, CD68+ and VEGF+ expressions in response to Himatanthus drasticus commercial latex in mice wound healing model

Palavras-chave: Clusia spp; Latex; Apolar fraction; Β-caryophyllene; Verbenone.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000501919

Arq. Bras. Med. Vet. Zootec.

Santos,G.J.L.; Ferreira,T.C.; Rodrigues,A.L.M.; Freitas,J.C.C.; Morais,S.M.; Girão,V.C.C.; Nunes-Pinheiro,D.C.S..

ABSTRACT This study aimed to evaluate Himatanthus drasticus latex in a mice wound healing experimental model. Animals were divided into four groups (n=7) according to the treatments: GI - saline 0.9% (control), GII - mineral oil (vehicle), GIII - H. drasticus commercial latex (HdCL) and GIV - H. drasticus mixed isolated fraction (MIF, 1 mg/mL). The treatments were applied topically once daily, 50 µL for 14 consecutive days. Macroscopic lesions were evaluated, considering parameters such as swelling, redness, granulation tissue and reepithelialization. VEGF+, CD68+ expressions and mast cells (Toluidin blue stain) were evaluated. HdCL induced higher contraction and exuberant granulation tissue (P > 0.05). HdCL showed a mild inflammatory process while MIF...

Isolation and partial characterization of a D-galactose-binding lectin from the latex of Synadenium carinatum

Palavras-chave: Latex; Apocinaceae; Wound healing; Angiogenesis; Inflammatory infiltrate.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300513

BABT

Souza,Maria Aparecida; Amâncio-Pereira,Francielle; Cardoso,Cristina Ribeiro Barros; Silva,Adriano Gomes da; Silva,Edmar Gomes; Andrade,Lívia Resende; Pena,Janethe Deolina Oliveira; Lanza,Henrique; Afonso-Cardoso,Sandra Regina.

A lectin from the latex of Synadenium carinatum was purified by affinity chromatography on immobilized-D-galactose-agarose and shown to be a potent agglutinin of human erythrocytes. The haemagglutination of human red cells was inhibited by 3.0 mM N-acetyl-D-galactopyranoside, 6.3 mM methyl-beta-D-galactopyranoside, 50 mM methyl-alpha-D-galactopyranoside and 50 mM D-fucose but not by L-fucose, demonstrating an anomeric and a conformational specificity. According to SDS-PAGE analysis, the lectin appeared to be a glycoprotein composed of two polypeptide chains of ca. 28 and 30 kDa, but size exclusion chromatography (Sephadex G-100) and native PAGE revealed a protein of apparent molecular weight 120 - 130 kDa made up of 28 and 30 kDa subunits. The lectin was...

Lepidopteran caterpillar fauna on lactiferous host plants in the central Brazilian cerrado

Palavras-chave: D-Galactose-binding; Lectin; Latex; Synadenium carinatum.

Ano: 2005

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600005

BJB

DINIZ,I. R.; MORAIS,H. C.; BOTELHO,A. M. F.; VENTUROLI,F.; CABRAL,B. C..

Nine lactiferous plants of five families were examined for caterpillars in a 4 ha cerrado sensu stricto (savanna-like vegetation) area of the University of Brasília Experimental Farm (DF, Brazil), from August 1995 to May 1997. In 5,540 censuses, less than 5% of the plants hosted caterpillars. All the caterpillars found, a total of 55 species in 15 families were reared under laboratory conditions. Pyralidae, Geometridae, Elachistidae, Megalopygidae, and Limacodidae were the richest caterpillar families recorded. Of the 55 species, more than 40% were polyphagous, feeding on different host plant families, while 21 were considered rare species with less than four records during the study period. The species' rareness did not permit any analysis of diet...

Changes in protein profile during coagulation of latex from Carica papaya

Palavras-chave: Latex; Lepidoptera; Host-plants; Cerrado; Diet.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400012

BJMBR

We describe the changes in peptide composition by SDS-PAGE analysis of latex from Carica papaya collected at various times after incision of the unripe fruit. The data show that during latex coagulation several peptides are processed in an orderly fashion.

Tipo: Info:eu-repo/semantics/other

Palavras-chave: Carica papaya; Latex; Endopeptidase; Cysteine proteinase; Papain; Coagulation.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000500007

The inflammatory stimulus of a natural latex biomembrane improves healing in mice

BJMBR

Andrade,T.A.M.; Iyer,A.; Das,P.K.; Foss,N.T.; Garcia,S.B.; Coutinho-Netto,J.; Jordão-Jr.,A.A.; Frade,M.A.C..

The aim of the present study was to compare healing obtained with biomembranes with the natural healing process (sham) using biochemical and immunohistological assays. C57BL/6 mice were divided into 4 groups of 15 mice each and received different subcutaneous implants: natural latex biomembrane (NLB), denatured latex (DL), expanded polytetrafluorethylene (ePTFE), or sham. On the 2nd, 7th, and 14th days post-treatment, 5 mice per group were sacrificed and biopsied for the following measurements: oxidative stress based on malondialdehyde (MDA), myeloperoxidase (MPO) and hydrogen peroxide by the method of ferrous oxidation-xylenol orange (FOX), as well as glutathione and total proteins; histological evaluation to enumerate inflammatory cells, fibroblasts,...

Anatomical characteristics and enzymes of the sucrose metabolism and their relationship with latex yield in the rubber tree (Hevea brasiliensis Muell. Arg.)

Palavras-chave: Wound healing; Inflammation; Oxidative stress; Angiogenesis; Latex; Histomorphometry.

Ano: 2011

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001000009

Braz. J. Plant Physiol.

Mesquita,Alessandro Carlos; Oliveira,Luiz Edson Mota de; Mazzafera,Paulo; Delú-Filho,Nelson.

Rubber production is dependent on the availability of carbohydrates in the tissues engaged in latex synthesis. In this study three rubber tree clones were used to study the protein profile, the activities of invertase and sucrose synthase in the latex and anatomical characteristics of the bark, as well as to establish a possible relationship with latex production. The clones used in the study, RRIM 600, GT 1 and Fx2261, differed in latex productivity, from high to low in this order. Although present, few differences were observed in the latex protein profile obtained by denaturing electrophoresis. The activity of neutral invertase was higher than the acidic isoform, and both activities were higher in the most productive clones RRIM 600 and GT 1. The same...

Anti-oxidative and proteolytic activities and protein profile of laticifer cells of Cryptostegia grandiflora, Plumeria rubra and Euphorbia tirucalli

Palavras-chave: Hevea brasiliensis; Invertase; Lacticiferous vessels; Latex; Rubber; Sucrose synthase.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200002

Braz. J. Plant Physiol.

Freitas,Cleverson D. T. de; Souza,Diego P. de; Araújo,Eliane S.; Cavalheiro,Mariana G.; Oliveira,Luciana S.; Ramos,Márcio V..

In this study, proteins extracted from laticifer cells of three plants were examined by electrophoresis, mass spectrometry (MALDI-TOF) and characterized in respect of proteolytic, chitinolytic and anti-oxidative activities by means of zymography and colorimetric assays. Acidic proteins with molecular masses between 12.5 and 74.5 kDa predominated in laticifers of P. rubra. This profile was not found in laticifers of C. grandiflora and E. tirucalli. The later was poor in respect of proteins. Strong anti-oxidative activity of superoxide dismutase (E.C. 1.15.1.1) was detected in P. rubra and C. grandiflora latices, and to a lesser extent ascorbate peroxidase (E.C. 1.11.1.1) and isoforms of peroxidase were seen. Catalase (E.C. 1.11.1.6) was detected only in...