Parâmetros hematológicos do Matrinxã Brycon amazonicus (Characidae: Bryconinae) criados em cativeiro na região Amazônica/ Hematological parameters of Matrinxã Brycon amazonicus (Characidae: Bryconinae) created in captivity in the Amazon region

Dentre as espécies exploradas na piscicultura da região, o matrinxã, Brycon amazonicus vem se destacando com uma das espécies promissoras para a região. Apesar da importância, ainda são escassos os estudos sobre as propriedades do sangue para a espécie, pois, esses são fundamentais para a determinação das condições de saúde em população de peixes. O presente trabalho tem por objetivo determinar os parâmetros hematológicos de matrinxã B. amazonicus oriundo de sistema de criação em canal de igarapé do município de Manacapuru, Amazonas. Um total de 25 indivíduos foram capturados de uma fazenda situada no km 11 da AM-352, o sangue foi coletado por punção caudal, as variáveis referentes ao eritrograma e bioquímica plasmática foram determinadas de acordo com metodologia previamente descrita para peixes. Os animais apresentaram comprimento total ± desvio padrão (média ± DP) de 32,3 ± 1,5 cm e peso corpóreo de 373,8 ± 59,0 g. Os valores médio e o DP do hematócrito (42,8 ± 2,3 %), concentração de hemoglobina (2,8 ± 0,4 g/dL), contagem de eritrócitos (2,4 ± 0,4 milhões/ µL), volume corpuscular médio (286,1 ± 30,0 fL), hemoglobina corpuscular média (12,0 ± 2,8 pg) e concentração de hemoglobina corpuscular média (6,4 ± 0,9 %) indicam condições de anemia especialmente para a concentração de hemoglobina. Os valores de glicose (40,9 ± 12,7 mg/dL), triglicerídeos (340,0 ± 43,0 mg/dL), colesterol (133,5 ± 20,5 mg/dL), proteínas totais (2,5 ± 0,2 g/dL), uréia (1,1 ± 0,2 mmol/L) e cloretos (120,8 ± 10,2 mmol/L), demonstram que essas variáveis referentes aos constituintes plasmáticos indicam baixos níveis quando comparados a outros estudos, esses estão diretamente associados a dieta que conforme retratado anteriormente é insuficiente e deficiente o que associado ao eritrograma, ao peso e ao comprimento explicam essa característica. Os matrinxãs B. amazonicus oriundos de fazenda do km 11 da AM 352 apresentam condições de saúde deficiente em relação ao peso, comprimento, eritrograma e a bioquímica plasmática

Montrichardia linifera (Araceae) biological potential, phytochemical prospection and polyphenol content

Montrichardia linifera is commonly known in Brazil as "aninga." In November 2008 and August 2009, we collected plant samples and extracted leaves and stems using hexane or dichloromethane and methanol to evaluate its biological and chemical potential, phytochemical profile and polyphenol content. Differences in the chemical composition of the collections were evident. In the first collection, the apolar extracts were the richest in metabolite composition while the polar extracts were the richest in the second collection. In general, extracts from Aug/2009 had higher antioxidant and cytotoxic activities than extracts from Nov/2008 and the stem and leaf extracts from the Aug/2009 collection showed the highest polyphenol content. As an insecticide against Sitophilus zeamais, the hexane extract of the leaves (Aug/2009) presented concentration-dependent insecticidal activity. Only the methanolic extract of stems and leaves (Aug/2009) presented a small inhibition halo (9 and 7 mm, respectively) against Aeromonas hydrophila when evaluating its antibacterial potential. The study demonstrates that, collection period is an important factor to consider in phytochemical and biological activity studies of M. linifera

Montrichardia linifera (Araceae) biological potential, phytochemical prospection and polyphenol content

Montrichardia linifera is commonly known in Brazil as “aninga.” In November 2008 and August 2009, we collected plant samples and extracted leaves and stems using hexane or dichloromethane and methanol to evaluate its biological and chemical potential, phytochemical profile and polyphenol content. Differences in the chemical composition of the collections were evident. In the first collection, the apolar extracts were the richest in metabolite composition while the polar extracts were the richest in the second collection. In general, extracts from Aug/2009 had higher antioxidant and cytotoxic activities than extracts from Nov/2008 and the stem and leaf extracts from the Aug/2009 collection showed the highest polyphenol content. As an insecticide against Sitophilus zeamais, the hexane extract of the leaves (Aug/2009) presented concentration-dependent insecticidal activity. Only the methanolic extract of stems and leaves (Aug/2009) presented a small inhibition halo (9 and 7 mm, respectively) against Aeromonas hydrophila when evaluating its antibacterial potential. The study demonstrates that, collection period is an important factor to consider in phytochemical and biological activity studies of M. linifera

Montrichardia linifera (Araceae) biological potential, phytochemical prospection and polyphenol content

Montrichardia linifera is commonly known in Brazil as "aninga." In November 2008 and August 2009, we collected plant samples and extracted leaves and stems using hexane or dichloromethane and methanol to evaluate its biological and chemical potential, phytochemical profile and polyphenol content. Differences in the chemical composition of the collections were evident. In the first collection, the apolar extracts were the richest in metabolite composition while the polar extracts were the richest in the second collection. In general, extracts from Aug/2009 had higher antioxidant and cytotoxic activities than extracts from Nov/2008 and the stem and leaf extracts from the Aug/2009 collection showed the highest polyphenol content. As an insecticide against Sitophilus zeamais, the hexane extract of the leaves (Aug/2009) presented concentration-dependent insecticidal activity. Only the methanolic extract of stems and leaves (Aug/2009) presented a small inhibition halo (9 and 7 mm, respectively) against Aeromonas hydrophila when evaluating its antibacterial potential. The study demonstrates that, collection period is an important factor to consider in phytochemical and biological activity studies of M. linifera

Montrichardia linifera (Araceae) biological potential, phytochemical prospection and polyphenol content

Montrichardia linifera is commonly known in Brazil as “aninga.” In November 2008 and August 2009, we collected plant samples and extracted leaves and stems using hexane or dichloromethane and methanol to evaluate its biological and chemical potential, phytochemical profile and polyphenol content. Differences in the chemical composition of the collections were evident. In the first collection, the apolar extracts were the richest in metabolite composition while the polar extracts were the richest in the second collection. In general, extracts from Aug/2009 had higher antioxidant and cytotoxic activities than extracts from Nov/2008 and the stem and leaf extracts from the Aug/2009 collection showed the highest polyphenol content. As an insecticide against Sitophilus zeamais, the hexane extract of the leaves (Aug/2009) presented concentration-dependent insecticidal activity. Only the methanolic extract of stems and leaves (Aug/2009) presented a small inhibition halo (9 and 7 mm, respectively) against Aeromonas hydrophila when evaluating its antibacterial potential. The study demonstrates that, collection period is an important factor to consider in phytochemical and biological activity studies of M. linifera