Major and minor element geochemistry of deep-sea sediments in the Azores Platform and southern seamount region

Palma, Carla; Oliveira, Anabela; Valença, Manuela; Cascalho, João; Pereira, Eduarda; Lillebø, Ana I.; Duarte, Armando C.; Abreu, Manuel Pinto de

doi:10.1016/j.marpolbul.2013.07.002

Cited by 11 publications

(3 citation statements)

References 46 publications

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“…All reported uncertainties represent expanded uncertainties expressed at approximately the 95% confidence level using a coverage factor of k = 2. For each analyzed element the limits of quantification and detection [30] as respectively values (in g/kg, in brackets and separated by a comma) as follows: Cu (5.0, 1.7), Cr (5.0, 1.7), Cd (0.5, 0.2), Mn (5.0, 1.7), Fe (5.0, 1.7), Li (5.0, 1.7), Zn (2.0, 0.7), Al (50.0, 16.7), Ni (7.5, 2.5), Pb (10.0, 3.3) and As (5.0 × 10 −2 , 2.0 × 10 −2 ) Hg (8.0 × 10 −3 , 3.0 × 10 −3 ).…”

Section: Elemental Compositionmentioning

confidence: 99%

Grape Pomace: A Potential Ingredient for the Human Diet

Pereira

Palma

Ferreira-Pêgo

et al. 2020

Foods

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The industrial production of wine generates annually tons of waste that can and must be properly reused to reduce its polluting load ad increase the availability of passive ingredients to be used in human nutrition. Grape pomace, a by-product of winemaking, beyond being of nutritional value is a bioactive source with high potential value and benefits for human health. Having as main goal the preliminary perception of the potential use of this by-product, the aim of this study was the characterization of eight different grape pomaces. In this sense, ash content, relative ash, moisture, pH, microorganisms, metals (Al, Cd, Cr, Cu, Fe, Hg, Li, Mn, Ni, Pb, and Zn), and semi-metal (As) were reported. The parameter that limits the daily amount ingested of this product is its arsenic content, a non-essential element that belongs to the group of semi-metal. Considering the obtained results and in the light of the restrictions imposed through the legislation in regulations set by the European Commission, the inclusion of grape pomace in the industrial production of foodstuffs could be a step towards the future of human nutrition and health.

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Section: Elemental Compositionmentioning

confidence: 99%

Grape Pomace: A Potential Ingredient for the Human Diet

Pereira

Palma

Ferreira-Pêgo

et al. 2020

Foods

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“…This interspecies microbial methane oxidation pathway allowed the deep‐sea ecosystem to flourish. Under natural conditions in the deep sea, the gases erupting from hydrothermal vents and cold seeps are a mixture of various reduced gases (Palma et al ., 2013; Perner et al ., 2013). It is impossible to determine what component of these reduced gases acts as the energy source.…”

Section: Discussionmentioning

confidence: 99%

Artificial construction of the biocoenosis of deep‐sea ecosystem via seeping methane

Sun

Yang

Zheng

et al. 2020

Environmental Microbiology

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Summary Deep‐sea ecosystems, such as cold seeps and hydrothermal vents, have high biomass, even though they are located in the benthic zone, where no sunlight is present to provide energy for organism proliferation. Based on the coexistence of the reduced gases and chemoautotrophic microbes, it is inferred that the energy from the reduced gases supports the biocoenosis of deep‐sea ecosystems. However, there is no direct evidence to support this deduction. Here, we developed and placed a biocoenosis generator, a device that continuously seeped methane, on the 1000‐m deep‐sea floor of the South China Sea to artificially construct a deep‐sea ecosystem biocoenosis. The results showed that microorganisms, including bacteria and archaea, appeared in the biocoenosis generator first, followed by jellyfish and Gammaridea arthropods, indicating that a biocoenosis had been successfully constructed in the deep sea. Anaerobic methane‐oxidizing archaea, which shared characteristics with the archaea of natural deep‐sea cold seeps, acted as the first electron acceptors of the emitted methane; then, the energy in the electrons was transferred to downstream symbiotic archaea and bacteria and finally to animals. Nitrate‐reducing bacteria served as partners to complete anaerobic oxidation of methane process. Further analysis revealed that viruses coexisted with these organisms during the origin of the deep‐sea biocoenosis. Therefore, our study mimics a natural deep‐sea ecosystem and provides the direct evidence to show that the chemical energy of reduced organic molecules, such as methane, supports the biocoenosis of deep‐sea ecosystems.

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“…A fotossíntese é o principal processo biológico responsável pelas variações isotópicas do carbono (White, 2011 (Lehninger, 1982;Pancost e Pagani, 2006). O mecanismo C4 é característico de plantas tropicais, como o milho e a cana de açúcar (Lehninger, 1982 (Palma et al, 2013;Arz et al, 1998).…”

Section: Marcadores Orgânicos Molecularesunclassified

Avaliação das condições paleoclimáticas e paleoceanográficas dos últimos 1500 anos na Plataforma Continental de São Sebastião (Sudeste do Brasil) através do uso de <i>proxies</i> geoquímicos

Spera¹

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obrigada por estar ao meu lado nesses últimos 6 anos, me orientado, me aconselhando e principalmente me aguentando! Muito obrigada pelas oportunidades, pelos ensinamentos, pelo carinho, pela amizade e por todas as broncas (que no fim sempre vinham acompanhadas de palavras de incentivo). Ao meu coorientador Prof. Dr. Rubens César Lopes Figueira, muito obrigada por toda a sua ajuda e orientação. Obrigada pelos ensinamentos, pelas discussões, pelas oportunidades, pela amizade e por ter acreditado em mim, me dando a oportunidade de ser sua orientanda. À Profa. Dra. Gesine Mollenhauer, minha orientadora em Bremen, muito obrigada pela oportunidade, pelos ensinamentos e por me fazer sentir em casa, mesmo estando tão longe. Ao Prof. Dr. Michel M. Mahiques, por todos os brainstorms e por sempre estar disposto a sanar minhas infinitas dúvidas. À Profa Dra. Ilana Wainer e ao Prof. Dr. Francisco Cruz pelas contribuições e sugestões dadas durante o meu exame de qualificação. À Satie, muito obrigada por todos os ensinamentos, pela paciência, pela amizade, por toda a ajuda e por sempre estar disposta a nos ensinar! Eu não vou me esquecer da cauda nos compostos!! Também não posso deixar de agradecer pelos maravilhosos patês e bolos que nunca faltavam em nossas festinhas! Ao Lourival, por toda ajuda no laboratório e nas monitorias. O que teria sido de mim e minhas 40 colunas por semana sem sua ajuda hein, Lori?!! Muito obrigada por tudo.

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Major and minor element geochemistry of deep-sea sediments in the Azores Platform and southern seamount region

Cited by 11 publications

References 46 publications

Grape Pomace: A Potential Ingredient for the Human Diet

Grape Pomace: A Potential Ingredient for the Human Diet

Artificial construction of the biocoenosis of deep‐sea ecosystem via seeping methane

Avaliação das condições paleoclimáticas e paleoceanográficas dos últimos 1500 anos na Plataforma Continental de São Sebastião (Sudeste do Brasil) através do uso de <i>proxies</i> geoquímicos

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