scholarly journals ISOLASI METABOLIT SEKUNDER FLAVONOID DARI BATANG RANDU (Ceiba pentandra L.)

2020 ◽  
Vol 5 (1) ◽  
pp. 15-22
Author(s):  
Lia Fikayuniar ◽  
Ermi Abriyani ◽  
Wahyu Nur Februrohman
Keyword(s):  
Ceiba Pentandra

Batang randu adalah pohon tropis yang tergolong ordo Malvaceae (sebelumnya Bombacaceae). Kata ‘kapuk’ digunakan untuk menyebut serat yang dihasilkan dari bijinya.Pohon ini juga dikenal sebagai Kapas Jawa atau Kapok Jawa. Selama ini batang kapuk randu hanya digunakan sebagai tanaman atau obat herbal tanpa diolah terlebih dahulu. Untuk memberikan informasi mengenai metabolit sekunder yangterkandung pada batang randuCeiba pentandra (L) Gaetrn. Metode yang digunakan yaitu dengan kromatografi lapis tipis yang di lanjut dengan kromatografi kolom. Analisis metabolit sekunder dengan spektrofotometri UV-Vis dengan panjang gelombang 200-600 nm. Hasil penelitian, dapat disimpulkan bahwa pada batang randu Ceiba pentandra (L) Gaetrn Mengandung senyawa flavonoid dengan jenis Flavon. Kata Kunci: Kromatografi Lapis Tipis, Kromatografi Kolom, Batang randu, Spektofotometri UV-Vis

scholarly journals The effect of ultrasound duty cycle in biodiesel production from Ceiba pentandra

2021 ◽  
Vol 753 (1) ◽  
pp. 012031
Author(s):  
Fazril Iderisa ◽  
Arridina Susan Silitonga ◽  
Fitranto Kusumo ◽  
Abd Halim Shamsuddina ◽  
Saifuddin M. Nomanbhaya ◽  
...  
Keyword(s):  
Duty Cycle ◽  
Biodiesel Production ◽  
Ceiba Pentandra

scholarly journals EFICIÊNCIA DE EXTRATO TÂNICO COMBINADO OU NÃO COM ÁCIDO BÓRICO NA PROTEÇÃO DA MADEIRA DE Ceiba pentandra CONTRA CUPIM XILÓFAGO

FLORESTA ◽  
2014 ◽  
Vol 44 (1) ◽  
pp. 43 ◽  
Author(s):  
Leandro Calegari ◽  
Pedro Jorge Goes Lopes ◽  
Gregório Mateus Santana ◽  
Diego Martins Stangerlin ◽  
Elisabeth De Oliveira ◽  
...  
Keyword(s):  
Boric Acid ◽  
Sodium Sulfite ◽  
Condensed Tannin ◽  
Acid Leaching ◽  
Distilled Water ◽  
Ceiba Pentandra ◽  
Nasutitermes Corniger ◽  
Natural Wood ◽  
Vegetable Tannins ◽  
Mimosa Tenuiflora

Dentre os métodos que vêm sendo testados para minimizar a lixiviação de compostos de boro na madeira, destaca-se sua combinação com taninos vegetais. Aos taninos vegetais é atribuída a durabilidade natural da madeira de algumas espécies, indicando sua potencialidade como preservativo natural. Neste estudo, avaliou-se o rendimento de taninos condensados provenientes da casca de Mimosa tenuiflora em extração realizada com água destilada, comparando-o ao da extração envolvendo a inclusão de sulfito de sódio, assim como a eficiência de extratos tânicos sulfitados, combinados ou não com ácido bórico, na melhoria da resistência da madeira de Ceiba pentandra ao térmita xilófago Nasutitermes corniger, por meio de ensaio de preferência alimentar. Extrato tânico obtido com a inclusão de sulfito de sódio à água teve melhor rendimento em taninos condensados. De maneira geral, a impregnação da madeira com o extrato tânico sulfitado proporcionou o mesmo comportamento quando comparada à aplicação do ácido bórico, sendo os melhores resultados verificados quando ambos foram utilizados conjuntamente. No entanto, depois de aplicado na madeira, o extrato tânico foi lixiviado e não favoreceu a redução da lixiviação do ácido bórico. Apesar da potencialidade do uso do extrato tânico ao cupim xilófago, estudos adicionais fazem-se necessários.Palavras-chave: Biodeterioração da madeira; térmitas xilófagos; Nasutitermes corniger. AbstractTannic extract efficiency combined or not with boric acid on protection of Ceiba pentandra wood against xylophagous termite. Among the methods tested to reduce the leaching of boron compounds in wood, it can be highlighted their combination with vegetable tannins. It is attributed the natural durability of some species of wood to vegetable tannins, pointing to their potentiality as natural wood preservatives. This research evaluated the efficiency of condensed tannins from bark of Mimosa tenuiflora extract with distilled water, compared to another extract added of sodium sulfite. It also evaluated the efficiency of sulfited tannin extracts, combined or not with boric acid in order to improve the resistance of Ceiba pentandra against the xylophagous termite Nasutitermes corniger by feeding test. Tannic extract obtained by adding sodium sulfite to distilled water revealed better yield compared to condensed tannin extraction. In general, impregnation of wood with tannin extract presented the same behavior as compared to application of boric acid, with best results observed when both them were simultaneously used. However, after applied to wood, tannin extracted was leachable and it did not favor the boric acid leaching. Despite the potential use of tannic extract against the xylophagous termite, additional studies are required for a best evaluation.Keywords: Wood biodeterioration; xilophogous termites; Nasutitermes corniger.

Curculionid beetles in aborted flower buds and immature fruits of Ceiba pentandra (Bombacaceae)

Plant Ecology ◽  
2007 ◽  
Vol 194 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Mauricio Fernández ◽  
Jorge Lobo ◽  
Eduardo Chacón ◽  
Mauricio Quesada
Keyword(s):  
Flower Buds ◽  
Ceiba Pentandra

scholarly journals Comportamento de espécies florestais em plantios a pleno sol e em faixas de enriquecimento de capoeira na Amazônia

2010 ◽  
Vol 40 (1) ◽  
pp. 127-134 ◽  
Author(s):  
Cintia Rodrigues de Souza ◽  
Celso Paulo de Azevedo ◽  
Roberval Monteiro Lima ◽  
Luiz Marcelo Brum Rossi
Keyword(s):  
Acacia Mangium ◽  
Hymenaea Courbaril ◽  
Carapa Guianensis ◽  
Ceiba Pentandra

Foram avaliadas espécies florestais nativas e exóticas em duas condições de plantio: a pleno sol e em faixas de enriquecimento de capoeira, a fim de gerar tecnologias para incorporação ao processo produtivo de áreas alteradas na região amazônica para minimizar a pressão do desmatamento sobre a floresta natural. Os dados analisados (DAP, altura, volume por hectare e sobrevivência) referem-se à idade de seis anos. No plantio a pleno sol, a espécie que apresentou o melhor desempenho foi Ceiba pentandra, com médias de DAP de 19,6 cm, altura de 10,2 m e volume de 390,9 m³ ha-1. Hymenaea courbaril também apresentou crescimento satisfatório, com médias de 11,5 cm de DAP, 10,8 m de altura e 144,8 m³ ha -1 de volume. Nos plantios de enriquecimento de capoeira, a Carapa guianensis foi a espécie que apresentou o melhor desempenho, com 8,3 cm de DAP, 6,4 m de altura e volume de 54,8 m³ ha -1. Acacia mangium e Sclerolobium paniculatum apresentaram crescimento superior, mas as taxas de sobrevivência foram muito baixas nas duas condições de plantio.

Litter decomposition and nutrient release in a tropical rainforest, Southern Bakundu Forest Reserve, Cameroon

1995 ◽  
Vol 11 (3) ◽  
pp. 333-350 ◽  
Author(s):  
Nicholas C. Songwe ◽  
D. U. U. Okali ◽  
F. E. Fasehun
Keyword(s):  
Forest Floor ◽  
Tropical Rainforest ◽  
Great Influence ◽  
Wood Decay ◽  
Nutrient Release ◽  
Dry Weight ◽  
Nitrogen And Phosphorus ◽  
Forest Reserve ◽  
Ceiba Pentandra ◽  
Terminalia Superba

ABSTRACTDecomposition of litter on the forest floor and of leaves of five species, Celtis zenkeri, Cola lepidota, Desbordesia glaucescens, Ceiba pentandra and Terminalia superba in nylon mesh bags, as well as wood decay were studied in the tropical rainforest at Southern Bakundu Forest Reserve, Cameroon.The rate of loss of dry matter was fastest in Celtis zenkeri which was significantly different from the other species, while potassium was the most rapidly released element from all species with more than 50% being released in the first two months of the experiment. Nitrogen and phosphorus showed initial increases in bagged leaf litter independent of dry weight losses and while nitrogen was later released phosphorus continued to increase reaching 2–3 times the initial concentration. Decomposition constant (k) of litter on the forest floor was found to be 2.23 whereas the mean decomposition constants of the different species were as follows: Celtis zenkeri 4.18, Cola lepidota 2.18, Desbordesia glaucescens 1.60 and Ceiba pentandra 2.16 for the two experiments.Termites were found to have a very great influence on the decay of the wood of Terminalia superba with decay due to micro-organisms being negligible.

scholarly journals Eficiência dos óleos de nim (Azadirachta indica) e de mamona (Ricinus communis) na proteção da madeira de sumaúma (Ceiba pentandra)contra cupins xilófagos em ensaio de preferência alimentar

2011 ◽  
Vol 35 (3 suppl 1) ◽  
pp. 751-758 ◽  
Author(s):  
Juarez Benigno Paes ◽  
Ademilson Daniel de Souza ◽  
Carlos Roberto de Lima ◽  
Pedro Nicó de Medeiros Neto
Keyword(s):  
Azadirachta Indica ◽  
Ricinus Communis ◽  
Ceiba Pentandra ◽  
Nasutitermes Corniger

Esta pesquisa objetivou avaliar a eficiência dos óleos de nim (Azadirachta indica) e de mamona (Ricinus communis) na melhoria da resistência da madeira de sumaúma (Ceiba pentandra) ao térmita xilófago Nasutitermes corniger em ensaio de preferência alimentar. Os óleos das sementes de nim e de mamona foram extraídos com álcool etílico absoluto e empregados no preparo das soluções preservativas. Amostras de madeira com dimensões de 2,0 x 10,16 x 0,64 cm (radial x longitudinal x tangencial) foram tratadas para atingir uma retenção nominal de 10 a 16 kg de solução por metro cúbico de madeira, sendo parte das amostras tratadas submetida ao envelhecimento (volatilização ou lixiviação). As amostras tratadas foram submetidas à ação de cupins em ensaio de preferência alimentar. Os referidos óleos pouco contribuíram para a melhoria da resistência da madeira de sumaúma ao cupim testado. Entre as soluções testadas, o óleo de mamona puro foi o mais eficiente. O envelhecimento das amostras pouco influenciou na resistência da madeira. Os óleos de nim e de mamona puros e suas soluções, mesmo apresentando algum efeito de repelência aos cupins, não evidenciaram efeito duradouro, indicando que esses produtos não devem ser empregados no tratamento da madeira com o objetivo de melhorar sua resistência a cupins xilófagos.

scholarly journals Hypoglycemic Properties of the Aqueous Extract from the Stem Bark of Ceiba pentandra in Dexamethasone-Induced Insulin Resistant Rats

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Christian Kuété Fofié ◽  
Elvine Pami Nguelefack-Mbuyo ◽  
Nole Tsabang ◽  
Albert Kamanyi ◽  
Télesphore Benoît Nguelefack
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Glucose Tolerance ◽  
Type Ii Diabetes ◽  
Stem Bark ◽  
Oral Glucose ◽  
Phytochemical Analysis ◽  
Type Ii ◽  
Insulin Resistant ◽  
Ceiba Pentandra

Parts of Ceiba pentandra are wildly used in Africa to treat diabetes and previous works have demonstrated their in vivo antidiabetic effects on type 1 diabetes models. In addition, it has been recently shown that the decoction and the methanol extract from the stem bark of C. pentandra potentiate in vitro, the peripheral glucose consumption by the liver and skeletal muscle slices. But nothing is known about its effect on type II diabetes, especially on insulin resistance condition. We investigated herein the antihyperglycemic, insulin-sensitizing potential, and cardioprotective effects of the dried decoction from the stem bark of Ceiba pentandra (DCP) in dexamethasone-induced insulin resistant rats. DCP phytochemical analysis using LC-MS showed the presence of many compounds, including 8-formyl-7-hydroxy-5-isopropyl-2-methoxy-3-methyl-1,4-naphthaquinone, 2,4,6-trimethoxyphenol, and vavain. Wistar rats were given intramuscularly (i.m.) dexamethasone (1 mg/kg/day) alone or concomitantly with oral doses of DCP (75 or 150 mg/kg/day) or metformin (40 mg/kg/day) for 9 days. Parameters such as body weight, glycemia, oral glucose tolerance, plasma triglycerides and cholesterol, blood pressure, and heart rate were evaluated. Moreover, cardiac, hepatic and aortic antioxidants (reduced glutathione, catalase, and superoxide dismutase), malondialdehyde level, and nitric oxide content were determined. DCP decreased glycemia by up to 34% and corrected the impairment of glucose tolerance induced by dexamethasone but has no significant effect on blood pressure and heart rate. DCP reduced the total plasma cholesterol and triglycerides as compared to animals treated only with dexamethasone. DCP also increased catalase, glutathione, and NO levels impaired by dexamethasone, without any effect on SOD and malondialdehyde. In conclusion, the decoction of the stem bark of Ceiba pentandra has insulin sensitive effects as demonstrated by the improvement of glucose tolerance, oxidative status, and plasma lipid profile. This extract may therefore be a good candidate for the treatment of type II diabetes.

scholarly journals UJI AKTIVITAS ANTIBAKTERI EKSTRAK DAUN KAPUK RANDU (Ceiba pentandra (L.) Gaertn) TERHADAP BAKTERI Streptococcus mutans

2018 ◽  
Vol 2 (1) ◽  
pp. 10-15
Author(s):  
Busman Busman ◽  
Edrizal Edrizal ◽  
Danu Eko Saputra
Keyword(s):  
Streptococcus Mutans ◽  
Ceiba Pentandra

Streptococcus mutans bakteri yang bersifat kariogenik atau penyebab terjadinya karies pada gigi. Tujuan penelitian ini adalah untuk mengetahui aktivitas antibakteri ekstrak daun kapuk randu (Ceiba pentandra L. Gaertn) terhadap bakteri Streptococcus mutans. Jenis penelitian yang digunakan adalah eksperimental laboratorium. Penelitian ini dilakukan di Laboratorium Biokimia Kopertis Wilayah X, Padang, pada bulan April 2015. Bahan yang digunakan adalah ekstrak daun kapuk randu konsentrasi 20 %, 30 %, 40 %, 50 %, 60 % dan 80 % dengan menggunakan DMSO. Kontrol positif menggunakan amoxicilin. Diuji menggunakan Uji ANOVA dan dilanjutkan dengan uji LSD. Hasil penelitian menunjukkan semakin tinggi tingkat konsentrasi ekstrak daun kapuk randu (Ceiba pentandra L. Gaertn) maka semakin tinggi pula diameter zona hambat terhadap bakteri Streptococcus mutans dengan nilai rata-rata yang diperoleh 16 mm, 19 mm, 21 mm, 23 mm, 24 mm, 26 mm dan 25 mm secara berurutan. Berdasarkan uji statistik ANOVA diameter zona hambat (mm) dalam berbagai konsentrasi ekstrak daun kapuk randu menunjukkan perbedaan signifikan (p<0,05)

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