scholarly journals POTENCIAL DE ESTABELECIMENTO DE PLANTIO PARA EXTRAÇÃO E MANUFATURA DE ÓLEOS VEGETAIS DE ESPÉCIES NATIVAS NO NORTE PIAUIENSE

2021 ◽  
Author(s):  
Braulio Fernandes de Carvalho ◽  
Gustavo Nogueira Barreto
Keyword(s):  
Elaeis Guineensis ◽  
Ricinus Communis ◽  
Acrocomia Aculeata ◽  
Dipteryx Alata

Introdução: Murici dos Portelas, no estado do Piauí, encontra-se na Mata dos Cocais, área de transição entre Cerrado, Caatinga e Amazônia, bioma rico em espécies vegetais produtoras de óleos, incluindo a maior concentração de palmeiras (Aracaceae) oleaginosas do mundo. O plantio de espécies nativas para a produção de óleos poderia enriquecer interações ecológicas locais, por fornecer alimentos para a fauna, bem como gerar atividades econômicas sustentáveis, associadas a outros serviços e produtos, fornecendo alternativas à destruição de habitats tropicais relacionada ao monocultivo de Palma (Elaeis guineensis). Objetivos: Propor projeto de plantio com espécies botânicas produtoras de óleos, associado a uma cadeia produtiva local, com foco na obtenção de óleos vegetais e desenvolvimento de produtos com valor agregado. Material e métodos: Fez-se estudo bibliográfico para identificar vegetação arbustiva e arbórea com potencial de estabelecimento em propriedade rural, que também serviria como base de cadeia produtiva, no município de Murici dos Portelas-PI. Levou-se em consideração que parte da propriedade rural, localizada em 3°15’46.96’’S, 41°57’04.25’’O) será destinada a criação de Reserva Particular do Patrimônio Natural, onde somente é permitido ecoturismo, pesquisa científica e educação ambiental, e o restante da área terá uso direto dos recursos naturais. Resultados: As plantas produtoras de óleos com potencial para estabelecimento no local foram Andiroba (Capara sp.), Babaçu (Orbignya martiana), Baru (Dipteryx alata), Carnaúba (Copernicia prunifera), Coco-babão (Syagrus cearensis), Copaíba (Copaifera sp.), Licuri (Syagrus coronata), Macaúba (Acrocomia aculeata), Mamona (Ricinus communis), Oiticica (Licania rigida), Pindoba (Attalea sp.), Sucupira (Bowdichia sp.) e Tucunzeiro (Bactris setosa). Conclusão: São várias as espécies vegetais adequadas ao projeto. Entretanto, a capacidade de produção de cada óleo, propriedades químicas e valor comercial varia de acordo com a espécie e as condições ambientais locais. As aplicações desses óleos incluem produção de cosméticos, alimentos, medicamentos, fitoterápicos, produtos de limpeza, lubrificantes e biocombustíveis. Evidencia-se que muitas dessas espécies não são domesticadas e fazem-se necessárias mais pesquisas para o entendimento da biologia e melhoramento genético dessas culturas.

scholarly journals OBTENÇÃO DE BIODIESEL A PARTIR DOS ÓLEOS DE MACAÚBA, BABAÇU E DENDÊ, UTILIZANDO DIFERENTES CATALISADORES QUÍMICOS E BIOLÓGICOS

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Gabriel N. Da Silva ◽  
Meleque Natã P. Da Silva ◽  
Carolina R. Hurtado ◽  
Gabriela R. Hurtado
Keyword(s):  
Elaeis Guineensis ◽  
Acrocomia Aculeata

O trabalho almeja analisar as diferenças entre os métodos de obtenção do biodiesel à   partir dos óleos vegetais de Babaçu (Orbignya phalerata), Macaúba (Acrocomia aculeata) e Dendê (Elaeis guineensis), os quais desempenham importante papel uma vez que são matérias-primas renováveis para a produção de biodiesel e, diante dessa característica são mais facilmente degradados pela natureza em comparação aos combustíveis fósseis, além de diminuição das emissões gasosas poluentes quando queimados em motores ciclodiesel. Para tanto, realizou-se em laboratório a transesterificação dos ésteres presentes nesses óleos utilizando os catalisadores hidróxido de potássio (KOH) e Creon 25000© (enzima) e posterior análise do produto obtido por meio do método de cromatografia em camada delgada. Realizou-se alguns ensaios de análise das propriedades físico- químicas para verificar a maior eficácia de catalisador químico (KOH) em detrimento ao biológico. PALAVRAS-CHAVE: Biodiesel; transesterificação; cromatografia; ésteres; macaúba; babaçu

scholarly journals Absence of a molecular structural effect on the thermodynamic properties of several biodiesel materials

2018 ◽  
Vol 10 (2) ◽  
pp. 362-367 ◽  
Author(s):  
Hermes R. Alvarado-Montero ◽  
Carmen Monge-Montero ◽  
María Sol Vargas ◽  
Giselle Lutz ◽  
Julio F. Mata-Segreda
Keyword(s):  
Thermodynamic Properties ◽  
Elaeis Guineensis ◽  
Ricinus Communis ◽  
Structural Effect ◽  
Thermal Coefficient ◽  
Energy Technology ◽  
Physic Nut ◽  
Technical Material ◽  
Macaw Palm ◽  
Hildebrand Solubility Parameter

In the search to develop the production of vegetable oils for non-food purposes biodiesel stands out for its great versatility as technical material and a cleaner energy technology. Physic nut (Jatropha curcas), castor-oil (Ricinus communis), oil palm (Elaeis guineensis), wine palm (Attalea butyracea) and macaw palm (Acrocomia aculeata) were chosen for study in our laboratory, because they are oleaginous plants with convenient oil yields to produce biodiesel. No significant effect from the nature of fatty-acid chains in biodiesel is observed on thermodynamic properties such as heat of combustion, cubic-expansion thermal coefficient, isothermal compressibility, enthalpy of vaporisation and Hildebrand solubility parameter. Activation energies for viscous flow of biodiesels correlates with the same property of their vegetable oil feedstocks.

Biological and Surface Properties of C-Type Virus Particles Produced by Novikoff Ascites Hepatoma Cells

1977 ◽  
Vol 35 ◽  
pp. 388-389
Author(s):  
D.C. Hixson ◽  
J.C. Chan ◽  
J.M. Bowen ◽  
E.F. Walborg
Keyword(s):  
Surface Properties ◽  
Ricinus Communis ◽  
Rat Kidney ◽  
Leukemia Virus ◽  
Viral Envelope ◽  
Virus Particles ◽  
Chemically Induced ◽  
Sarcoma Virus ◽  
Hepatocarcinoma Cells ◽  
Type C

Several years ago Karasaki (1) reported the production of type C virus particles by Novikoff ascites hepatocarcinoma cells. More recently, Weinstein (2) has reported the presence of type C virus particles in cell cultures derived from transplantable and primary hepatocellular carcinomas. To date, the biological function of these virus and their significance in chemically induced hepatocarcinogenesis are unknown. The present studies were initiated to determine a possible role for type C virus particles in chemically induced hepatocarcinogenesis. This communication describes results of studies on the biological and surface properties of type C virus associated with Novikoff hepatocarcinoma cells.Ecotropic and xenotropic murine leukemia virus (MuLV) activity in ascitic fluid of Novikoff tumor-bearing rats was assayed in murine sarcoma virus transformed S+L- mouse cells and S+L- mink cells, respectively. The presence of sarcoma virus activity was assayed in non-virus-producing normal rat kidney (NRK) cells. Ferritin conjugates of concanavalin A (Fer-Con wheat germ agglutinin (Fer-WGA), and Ricinus communis agglutinins I and II (Fer-RCAI and Fer-RCAII) were used to probe the structure and topography of saccharide determinants present on the viral envelope.

Lectin Binding to Human Breast Tumor Cells

1976 ◽  
Vol 34 ◽  
pp. 34-35
Author(s):  
Robert E. Nordquist ◽  
J. Hill Anglin ◽  
Michael P. Lerner
Keyword(s):  
Carcinoma Cell ◽  
Ricinus Communis ◽  
Lectin Binding ◽  
Low Frequency ◽  
Breast Carcinoma Cell Line ◽  
Human Breast ◽  
Human Breast Tumor ◽  
Duct Carcinoma ◽  
Specific Antigens ◽  
Ricin Agglutinin

A human breast carcinoma cell line (BOT-2) was derived from an infiltrating duct carcinoma (1). These cells were shown to have antigens that selectively bound antibodies from breast cancer patient sera (2). Furthermore, these tumor specific antigens could be removed from the living cells by low frequency sonication and have been partially characterized (3). These proteins have been shown to be around 100,000 MW and contain approximately 6% hexose and hexosamines. However, only the hexosamines appear to be available for lectin binding. This study was designed to use Concanavalin A (Con A) and Ricinus Communis (Ricin) agglutinin for the topagraphical localization of D-mannopyranosyl or glucopyranosyl and D-galactopyranosyl or DN- acetyl glactopyranosyl configurations on BOT-2 cell surfaces.

Glycoprotein Ib Has a Partial Role in Platelet-von Willebrand Factor Collagen Interaction

1988 ◽  
Vol 60 (02) ◽  
pp. 182-187 ◽  
Author(s):  
Morio Aihara ◽  
Ken Tamura ◽  
Ryuko Kawarada ◽  
Keizou Okawa ◽  
Yutaka Yoshida
Keyword(s):  
Platelet Aggregation ◽  
Von Willebrand Factor ◽  
Ricinus Communis ◽  
Protein S ◽  
Platelet Membrane ◽  
Membrane Glycoprotein ◽  
Normal Plasma ◽  
Ricinus Communis Agglutinin ◽  
Von Willebrand ◽  
Willebrand Factor

SummaryThe adhesion of human fixed washed platelets (FWP) to collagen was decreased after treatment with Serratia marcescens protease (SP), which removed 95% of the glycocalicin from platelet membrane glycoprotein (GP) lb. However, the diminished adhesion of SP treated FWP to collagen could still be increased in the presence of purified von Willebrand factor (vWF). This ability of vWF to increase FWP adhesion to collagen is defined as collagen cofactor (CCo). The adhesion of FWP to collagen was not affected by a monoclonal antibody (MAb) to GP Ilb/IIIa (10E5), that inhibits ADP and collagen induced platelet aggregation. On the other hand, it was decreased by 50% by a MAb to GP lb (6D1), that inhibits ristocetin induced platelet aggregation. Adhesion of FWP in buffer to collagen was completely inhibited by Ricinus communis agglutinin I or concanavalin A, while Lens culinalis agglutinin and wheat germ agglutinin showed 50% inhibition. The FWP adhesion to collagen in the presence of vWF (normal plasma) was unaffected by MAbs to GP Ilb/IIIa (10E5, P2, HPL1) but was decreased to 32-38% by MAbs to GP lb (6D1, AN51, HPL11). A MAb to vWF (CLB-RAg 35), that inhibits ristocetin induced binding of vWF to platelets, decreased the CCo of normal plasma by 70%. The MAb, CLB-RAg 201, that inhibits the binding of vWF to collagen, completely inhibited the CCo of normal plasma. In conclusion, our data suggest that (1) GP lb has a partial role in FWP adhesion to collagen; (2) the binding of vWF to collagen is required for the expression of CCo; (3) CCo is partly mediated through GP lb; but (4) other platelet membrane protein(s) besides GP lb or GP Ilb/IIIa must also be involved in FWP-vWF-collagen interactions.

Further Studies on Aggregation of Platelet-Type von Willebrand’s Disease Platelets by Human von Willebrand Factor

1986 ◽  
Vol 55 (03) ◽  
pp. 338-341 ◽  
Author(s):  
H Takahashi ◽  
W Tatewaki ◽  
M Hanano ◽  
R Nagayama ◽  
A Shibata
Keyword(s):  
Von Willebrand Factor ◽  
Ricinus Communis ◽  
Divalent Cations ◽  
Peanut Agglutinin ◽  
Von Willebrand's Disease ◽  
Von Willebrand’S Disease ◽  
Ricinus Communis Agglutinin ◽  
Von Willebrand ◽  
Induced Aggregation ◽  
Willebrand Factor

SummaryPlatelet-type von Willebrand’s disease (vWD) is a bleeding disorder characterized by a heightened interaction between platelets and von Willebrand factor (vWF) as the result of an intrinsic platelet abnormality (probably in GPIb). Platelet aggregability was nearly normal in response to thrombin, wheat germ agglutinin and Ricinus communis agglutinin in this disorder. Unmodified platelets showed no aggregation upon the addition of peanut agglutinin. Partially purified human vWF induced little aggregation of washed patient platelets, but the aggregation was greatly enhanced in the presence of plasma devoid of vWF. Monoclonal antibodies directed against GPIb and GPIIb/IIIa as well as EDTA completely inhibited vWF-induced aggregation. These results indicate that human vWF induces aggregation of platelet-type vWD platelets in the presence of divalent cations and some plasma cofactor(s), and that both GPIb and GPIIb/IIIa are involved in this aggregation.

Analisis Sikap dan Kepuasan Petani dalam Menggunakan Benih Kelapa Sawit (Elaeis guineensis) Bersertifikat di Kabupaten Labuhan Batu Utara

AGRIMOR ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 40-44
Author(s):  
Myrna Pratiwi Nasution ◽  
Laura Juita Pinem
Keyword(s):  
Performance Analysis ◽  
Elaeis Guineensis

Produktivitas tanaman kelapa sawit sangat dipengaruhi oleh kualitas benih yang digunakan. Pemakaian benih kelapa sawit bersertifikat dipercayai oleh petani yang kritis dalam memberikan produktivitas tanaman kelapa sawit yang bermutu dan kontinyu. Sikap dan kepuasan petani dalam menggunakan benih kelapa sawit bersertifikat merupakan hal yang perlu dicermati untuk memahami keinginan petani. Penelitian ini dirancang untuk mengamati hal tersebut. Sikap petani dianalisis dengan menggunakan pendekatan multiatribut fishbean sedangkan kepuasan dianalisis dengan menggunakan Important Performance Analysis (IPA) dan Customer Satisfied Index (CSI). Berdasarkan penelitian diketahui bahwa atribut-atribut yang menentukan sikap dan kepuasan petani adalah hasil panen, ketahan terhadap hama dan penyakit, umur tanaman, daya tumbuhbenih, efisiensi penggunaan pupuk, jenis varietas, ukuran benih, sertifikasi benih, harga benih, harga Tandan Buah Segar (TBS), kemudahan dalam akses benih, stok benih, kemudahan dalam menjual TBS, dan promosi toko.Analisis multiatribut Fishbeinmenunjukkan sikap netral terhadap benih kelapa sawit bersertifikat (76 persen). Sementara hasil CSI menunjukkan bahwa 70.04 persen petani merasa puas atas atribut-atribut pada benih kelapa sawit bersertifikat.

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