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Pereira,Débora Tomazi; Simioni,Carmen; Filipin,Elisa Poltronieri; Bouvie,Fernanda; Ramlov,Fernanda; Maraschin,Marcelo; Bouzon,Zenilda Laurita; Schmidt,Éder Carlos. |
ABSTRACT Salinity is an important abiotic factor since it is responsible for the local and/or regional distribution of algae. In coastal regions, salinity changes with prevailing winds, precipitation and tide, and particularly in extreme intertidal conditions. Acanthophora spicifera is a red seaweed that occurs in the supratidal region in which changes in abiotic conditions occur frequently. This study evaluated the effects of salinity on the metabolism and morphology of A. spicifera. Algae were acclimatized under culture conditions with sterilized seawater for seven days. Experiments used different salinities (15 to 50 psu) for seven days, followed by metabolic analyses. This study demonstrates that extreme salinities affect physiological parameters of A.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acanthophora spicifera; Microscopy; Morphology; Physiology; Salinity. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400555 |
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Lima,Daniel Braga de; Agustini,Bruna Carla; Silva,Eliz Guimarães da; Gaensly,Fernanda; Cordeiro,Rodrigo Becker; Fávero,Maria Luiza Drechsel; Brand,Debora; Maraschin,Marcelo; Bonfim,Tania Maria Bordin. |
Wine production in the northern Curitiba, Paraná, Brazil, specifically the communes of Colombo and Almirante Tamandaré, is based mainly on the utilization of Vitis labrusca grapes var. Bordô (Ives). Total sugar content, pH, and total acidity were analyzed in red wine samples from 2007 and 2008 vintages following official methods of analysis. Moreover, total phenolic, flavonoid, and tannin contents were analyzed by colorimetric methodologies and the antioxidant activity was determined using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical methodology. Phenolic compounds were identified by high performance liquid chromatography. The total phenolic content of wine samples presented concentrations varying between 1582.35 and 2896.08 mg gallic acid.L-1 since... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rural; Winery; Chemometrics; Common wine; HPLC; Viniculture. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000300038 |
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Ramlov,Fernanda; Carvalho,Tiago Jose Griebeler; Costa,Giulia Burle; Rodrigues,Eva Regina de Oliveira; Bauer,Claudia Marlene; Schmidt,Eder Carlos; Kreusch,Marianne Gabi; Moresco,Rodolfo; Navarro,Bruno Bachiega; Cabral,Debora Queiroz; Bouzon,Zenilda Laurita; Horta,Paulo Antunes; Maraschin,Marcelo. |
ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations of it (0.001 % - 1.0 %, v/v) for periods of 30 min, 1 h, 12 h and 24 h. A Pricncipal Compound Analysis of UV-vis spectral window (200-700 nm) was able to discriminate gasoline-exposed samples according to both exposure time and gasoline concentration. Changes in carotenoid profile composition were observed. Decreased carotenoid content was associated to gasoline exposure time, being lutein and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochemical stress; Cellular organization; Gasoline pollution; Hypnea musciformis; Physiology. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100116 |
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