59 documents found, page 1 of 6
Rosmaninhos do sul de Portugal: perfil químico e propriedades biológicas das su...
Macedo-Arantes, Silvia; Caldeira, A. Teresa; Pereira, Marízia; Martins, M. RosárioAs lavandas e rosmaninhos, pertencentes ao género Lavandula apresentam grande importância económica, não só na indústria cosmética e perfumaria como também na indústria alimentar e farmacêutica, pelas suas importantes propriedades biológicas e farmacológicas dos seus óleos essenciais, apesar das diferenças observadas no perfil químico dos seus óleos essenciais. Estão descritas mais de trinta espécies de Lavandu...
Biotechnological Sustainable Production of Killer Yeast Toxins for Cultural Her...
Gatinho, Patrícia; Caldeira, Inês; Caldeira, A. Teresa; Salvador, CátiaThe issue of biodeterioration in the preservation of Cultural Heritage has gained significant attention, underscoring the necessity for novel approaches and advancements in this field. To tackle this issue, there is a pressing demand for innovative solutions. While synthetic polymers are frequently employed to combat biodeterioration in heritage items, they exhibit drawbacks such as high toxicity, short-lived e...
Unveiling Microbiota within the Rocaille-Adorned Garden Grotto at Condes de Bas...
Silva, Inês; Salvador, Cátia; Arantes, Sílvia; Miller, Ana; Candeias, António; Caldeira, A. TeresaBiodeterioration of Cultural Heritage is the consequence of interactions between living organisms, material support and environmental conditions. In stone materials, deterioration by fungi is mainly the result of mechanical, chemical, and physical processes, consisting essentially of penetration of hyphae, production of fruiting bodies, production and release of destructive extracellular organic acids, enzymes,...
Microbial communities of underwater caves from Algarve coast: Biological activi...
Salvador, Cátia; Arantes, Silvia; Martins, M. Rosário; Candeias, António; Saiz-Jimenez, Cesáreo; Caldeira, A. TeresaMicroorganisms are known to be an important source of bioactive compounds. Lately, the microbiota of hypogenic environments, such as underwater caves, has been explored, since they constitute complex ecosystems, which bring unique conditions for the development of organism’s niches with unknown biodiversity. These microorganisms may have interesting characteristics regarding the high potential to produce new bi...
Prospection of bioactive compounds produced by bacterial isolates from pristine...
Gatinho, Patrícia; Salvador, Cátia; Arantes, Sílvia; Martins, M. Rosário; Silva, Amélia; Miller, Ana; Caldeira, A. TeresaPristine environments can be defined as places with limited or no connections to anthropogenic activities [1], for example, karstic and marine caves, important landmarks of Natural and Cultural Heritage. Usually, these environments are exposed to extreme factors such as temperature, salinity, osmolarity, UV radiation, pressure, or pH, with values close to the limit of life. In these extreme environments, living...
Microbial induced stone discoloration in Alcobaça Monastery: a comprehensive study
Silva, Inês; Salvador, Cátia; Miller, Ana; Candeias, António; Caldeira, A. TeresaThe Alcobaça Monastery (Portugal), a UNESCO World Heritage Site, currently exhibits a high degree of surface alterations of the stone architectural elements inside the church, including an extensive pink coloration in the walls and columns (Fig. 1 A-B), bacteria biofilms, and salt efflorescences (Fig. 1C). The main goal was to identify the microbiota that colonizes the walls and columns of this monument, to hel...
Bioprospection of new compounds in pristine environments produced by bacterial ...
Gatinho, Patrícia; Salvador, Cátia; Arantes, Sílvia; M. Rosário, Martins; Miller, Ana; Caldeira, A. TeresaPristine environments can be defined as places with limited or no connections to anthropogenic activities [1], for example, karstic and marine caves, important landmarks of Natural and Cultural Heritage. Usually, these environments are exposed to extreme factors such as temperature, salinity, osmolarity, UV radiation, pressure, or pH, with values close to the limit of life. In these extreme environments, living...
Prokaryotic Communities from Pristine Cave Environments: Biotechnological Poten...
Gatinho, Patrícia; Salvador, Cátia; Silva, Amélia; Caldeira, A. TeresaPristine environments, such as caves, are unique habitats that are isolated from human activity and are exposed to extreme environmental conditions. These environments are rich sources of microbial diversity, and the microorganisms that thrive in these conditions have developed unique survival skills. One such skill is the biosynthesis of secondary metabolites with potential bioactivities, which provide the org...
Estudo das Comunidades Microbianas, In A Casa de Fresco do Paço de São Miguel: ...
Caldeira, A. Teresa; Silva, Inês; Salvador, Cátia; Arantes, SílviaCaso de estudo da biodeterioração da Casa de Fresco pertencentes ao jardim da Fundação Eugénio de Almeida em Évora (Portugal). A investigação foi realizada com os principais objetivos de: i) caracterização dos materiais utilizados; ii) avaliação e caracterização da comunidade microbiana através de técnicas metagenómicas filogenéticas e iii) investigação de biocidas comerciais, de forma a promover a salvaguarda ...
Biodeterioration in Art: a case study of Munch´s paintings.
Salvador, Cátia; Sandu, Irina; Sandbakken, Erika; Candeias, António; Caldeira, A. TeresaAbstract Biocolonization and biodeterioration phenomena in Cultural Heritage is presently considered a relevant issue when planning conservation strategies and preservation measures in museum collections. Artworks such as easel paintings are source of various ecological niches for microbial communities’ growth due to the presence of several organic resources. Therefore, the identification of proteinaceous mater...