UJI TOKSISITAS AKUT EKSTRAK ETANOL BIJI KOPI LAMPUNG (Coffea canephora var.Robusta) PADA TIKUS WISTAR

2021 ◽  
pp. 567-578
Author(s):  
Dewi Ratih Handayani ◽  
Maman Djamaludin ◽  
Adrian Mohammad Prayoga
Keyword(s):  
Coffea Canephora

Kopi Lampung (Coffea canephora var. Robusta) digunakan sebagai alternatif dalam mengobati penyakit karena memiliki efek sebagai antioksidan, antiinflamasi, dan antidiabetes hingga menurunkan risiko kanker. Uji keamanan terhadap obat herbal dilakukan untuk mengetahui dosis aman untuk dikonsumsi. Penelitian ini bertujuan untuk mengetahui efek toksisitas akut ekstrak etanol biji kopi Lampung (EBKL) terhadap tikus wistar berdasarkan jumlah kematian, perubahan berat badan, dan indeks organ relatif. Penelitian ini menggunakan metode eksperimental pada 25 ekor tikus Wistar jantan yang dibagi 5 kelompok, yaitu kelompok kontrol, dan kelompok perlakuan EBKL dosis 625 mg/KgBB, EBKL dosis 1250 mg/KgBB, EBKL dosis 2500 mg/KgBB, dan EBKL dosis 5000 mg/kgBB. Pengamatan penelitian berupa jumlah kematian, perubahan berat badan, dan indeks organ tikus. Hasil penelitian menunjukkan bahwa ekstrak etanol biji kopi Lampung menyebabkan kematian pada hewan coba, yaitu pada EBKL dosis 2500 mg/Kg BB dan 5000 mg/Kg BB dan nilai LD50 pada dosis ≥2500 mg/kgBB (p<0.05). Dari hasil penelitian terdapat perubahan berat badan yang signfikan pada dosis 5000 mg/kgBB (p<0.05), dan perbedaan signifikan indeks organ relatif hati pada dosis 5000 mg/kgBB (p<0.05) serta indeks organ relatif jantung pada dosis 2500 mg/kgBB dan 5000 mg/kgBB (p<0.05). Ekstrak etanol biji kopi lampung memiliki manfaat untuk kesehatan karena kandungan antioksidannya. Namun demikian, keamanan untuk digunakan sebagai terapi tetaplah harus memperhatikan dosis efektif dan batas keamanannya karena terdapat perubahan indeks organ relatif pada hati dan jantung setelah pemberian EBKL. Pada penelitian ini dapat disimpulkan bahwa ekstrak etanol biji kopi Lampung tergolong dalam kategori sedikit toksis.

Caracterização da Peneira Média em Clones de Coffea canephora

REVISTA FIMCA ◽  
2018 ◽  
Vol 5 (2) ◽  
pp. 28-31
Author(s):  
Darlan Darlan Sanches Barbosa Alves ◽  
Victor Mouzinho Spinelli ◽  
Marcos Santana Moraes ◽  
Carolina Augusto De Souza ◽  
Rodrigo da Silva Ribeiro ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Block Design ◽  
Coffea Canephora ◽  
Coffee Production ◽  
Randomized Block Design ◽  
Significant Difference ◽  
The Mean ◽  
Four Blocks ◽  
Selection Of

Introdução: O estado de Rondônia se destaca como tradicional produtor de café, sendo o segundo maior produtor brasileiro de C. canephora. No melhoramento genético de C. canephora, a seleção de plantas de elevada peneira média está associada à bebida de qualidade superior. Objetivos: O objetivo desse estudo foi avaliar a variabilidade genética de clones de C. canephora para o tamanho dos grãos, mensurado a partir da avaliação da peneira média (PM). Materiais e Métodos: Para isso, foi conduzido ao longo de dois anos agrícolas experimento no campo experimental da Embrapa no município de Ouro Preto do Oeste-RO, para a avaliação da peneira média de 130 genótipos (clones) com características das variedades botânicas Conilon, Robusta e híbridos intervarietais. O delineamento experimental utilizado foi de blocos ao acaso, com quatro repetições de quatro plantas por parcela. Resultados: Não houve resultados significativos para a interação clones X anos, indicando uma maior consistência no comportamento das plantas ao longo do tempo. Porém foram observadas diferenças significativas para o tamanho dos grãos entre os genótipos avaliados, possibilitando selecionar genótipos superiores. Conclusão: Os genótipos agruparam-se em cinco classes de acordo com o teste de média, subsidiando a caracterização de um gradiente de variabilidade da característica avaliada ABSTRACTIntroduction: Coffea canephora accounts for approximately 35% of the world's coffee production. The state of Rondônia stands out as a traditional coffee producer, being the second largest Brazilian producer of C. canephora. In the classical genetic improvement of C. anephora, the selection of plants of high average sieve is associated with a drink of superior quality. Objectives: The objective of this udy was to evaluate the genetic variability of Coffea canephora clones for the agronomic medium sieve (PM). Materials and Methods: The experiment was conducted in the experimental field of Embrapa, municipality of OuroPreto do Oeste-RO, located at coordinates 10º44'53 "S and 62º12'57". One hundred thirty genotypes (clones) of botanical characteristics Conilon, Robusta and intervarietal hybrids were evaluated in the agricultural years 2013-2014 and 2014-2015. The experimental design was a randomized block design with four blocks and four plants per plot, spacing 3.5 x 1.5 meters between plants. Results: Significant difference was found for the grain size. According to the F test, at 5% probability, the genotypes were grouped into five classes according to the mean test. Conclusion: The results obtained subsidized the characterization of a variability gradient of the evaluated trait.

scholarly journals Effects of different drying rates on the physiological quality of Coffea canephora Pierre seeds

2005 ◽  
Vol 17 (2) ◽  
pp. 199-205 ◽  
Author(s):  
Sttela Dellyzete Veiga Franco da Rosa ◽  
Delacyr da Silva Brandão Júnior ◽  
Édila Vilela de Resende Von Pinho ◽  
André Delly Veiga ◽  
Luiz Hildebrando de Castro e Silva
Keyword(s):  
Water Content ◽  
Storage Temperature ◽  
Removal Rate ◽  
Coffea Canephora ◽  
Development Stage ◽  
Seed Vigor ◽  
Drying Rate ◽  
Physiological Quality ◽  
Drying Rates

Desiccation tolerance in seeds depends on the species, development stage and drying conditions, especially the water removal rate. Coffea seeds are considered of intermediate performance, because they tolerate relative dehydration compared to orthodox seeds and are sensitive to low temperatures. The objective of this study was to verify the effect of different drying rates on the viability and storability of Coffea canephora seeds. A complete randomized experimental design was used, in a factorial 3 x 5 x 2 design, with three drying rates (fast, intermediate and slow), five final mean water contents after drying (51, 42, 33, 22 and 15 %) and two storage temperatures (10 and 20°C). The germination and seed vigor assessments, using radicle protrusion, cotyledon leaf opening, seedling emergence and emergence speed index, were performed shortly after drying and after two and four months storage. It was observed that with reduction in the water content there was reduction in the germination values and seed vigor, for all the drying rates. The greatest reductions in physiological quality occurred when the seeds were dried quickly and the best results were obtained at the intermediate drying rate. There was an effect of drying rate and storage temperature on the physiological quality of the seeds, and lower germination and vigor values were observed in seeds with lower water content stored at 20°C. C. canephora seeds were tolerant to desiccation down to 15 % water content and can be stored for four months at 10°C. A temperature of 20ºC can be used to store C. canephora seeds, as long as the water content is not reduced to values below 22 % water content.

Soil nitrogen cycling under contrasting management systems in Amazon Coffea canephora agroecosystems

2021 ◽  
Author(s):  
Rosa Elena Ibarra López ◽  
Eduardo F. Chávez Navarrete ◽  
Jimmy T. Pico Rosado ◽  
Cristian R. Subía García ◽  
Andrew J. Margenot
Keyword(s):  
Nitrogen Cycling ◽  
Soil Nitrogen ◽  
Coffea Canephora ◽  
Management Systems ◽  
Soil Nitrogen Cycling

Stable transformation and direct regeneration in Coffea canephora P ex. Fr. by Agrobacterium rhizogenes mediated transformation without hairy-root phenotype

2005 ◽  
Vol 25 (3) ◽  
pp. 214-222 ◽  
Author(s):  
Vinod Kumar ◽  
K. V. Satyanarayana ◽  
S. Sarala Itty ◽  
E. P. Indu ◽  
P. Giridhar ◽  
...  
Keyword(s):  
Agrobacterium Rhizogenes ◽  
Hairy Root ◽  
Coffea Canephora ◽  
Stable Transformation ◽  
Direct Regeneration

scholarly journals Purification, crystallization and preliminary X-ray diffraction analysis of a hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyltransferase (HCT) fromCoffea canephorainvolved in chlorogenic acid biosynthesis

2012 ◽  
Vol 68 (7) ◽  
pp. 824-828 ◽  
Author(s):  
Laura A. Lallemand ◽  
James G. McCarthy ◽  
Sean McSweeney ◽  
Andrew A. McCarthy
Keyword(s):  
Structural Data ◽  
Coffea Canephora ◽  
Molecular Replacement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cell Parameters ◽  
Key Enzyme ◽  
Substrate Specifities ◽  
Drop Technique ◽  
Better Than

Chlorogenic acids (CGAs) are a group of soluble phenolic compounds that are produced by a variety of plants, includingCoffea canephora(robusta coffee). The last step in CGA biosynthesis is generally catalysed by a specific hydroxycinnamoyl-CoA quinate hydroxycinnamoyltransferase (HQT), but it can also be catalysed by the more widely distributed hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyltransferase (HCT). Here, the cloning and overexpression of HCT fromC. canephorainEscherichia colias well as its purification and crystallization are presented. Crystals were obtained by the sitting-drop technique at 293 K and X-ray diffraction data were collected on the microfocus beamline ID23-2 at the ESRF. The HCT crystals diffracted to better than 3.0 Å resolution, belonged to space groupP42212 with unit-cell parametersa=b= 116.1,c= 158.9 Å and contained two molecules in the asymmetric unit. The structure was solved by molecular replacement and is currently under refinement. Such structural data are needed to decipher the molecular basis of the substrate specifities of this key enzyme, which belongs to the large plant acyl-CoA-dependent BAHD acyltransferase superfamily.

The Toxicity of a Lipid Transfer Protein (Cc-LTP1) from Coffea canephora Seeds on the Larval Development of Callosobruchus maculatus (Coleoptera: Bruchidae)

2014 ◽  
Vol 33 (5) ◽  
pp. 422-431 ◽  
Author(s):  
Umberto Zottich ◽  
Maura Da Cunha ◽  
Germana B. Dias ◽  
Guilherme R. Rabelo ◽  
Antonia Elenir A. Oliveira ◽  
...  
Keyword(s):  
Larval Development ◽  
Callosobruchus Maculatus ◽  
Lipid Transfer Protein ◽  
Coffea Canephora ◽  
Lipid Transfer ◽  
Transfer Protein
Sign in / Sign up

Export Citation Format

Share Document