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Patricia Sandra Guiamet - One of the best experts on this subject based on the ideXlab platform.

  • scopulariopsis sp and fusarium sp in the Documentary Heritage evaluation of their biodeterioration ability and antifungal effect of two essential oils
    Microbial Ecology, 2016
    Co-Authors: Paola Lavin, Sandra Gabriela Gomez De Saravia, Patricia Sandra Guiamet
    Abstract:

    Fungi produce pigments and acids, generating particular local conditions which modify the physicochemical properties of materials. The aims of this work are (i) to investigate bioadhesion, foxing production and biofilm formation by Scopulariopsis sp. and Fusarium sp. isolated from document collections under laboratory conditions; (ii) to verify attack on cellulose fibres and (iii) to study the possibility of reducing fungal growth using natural products. Biofilm formation and extracellular polymeric substance (EPS) production by fungi were demonstrated in laboratory assays and by scanning electron microscopy (SEM) observations. The biocidal activity of two essential oils of Origanum vulgare L. and Thymus vulgaris L. was evaluated using the microatmosphere method. SEM observations showed that these strains were able to attach to paper and form biofilms, causing damage on them, which demonstrates the biodeterioration ability of these microorganisms. Scopulariopsis sp. and Fusarium sp. isolated from paper books showed the formation of fox-like reddish-brown colour spots, attack to the paper structure and pigment production on aged paper samples. The strains tested produced a decrease in the pH of one unit. This would substantiate the effect of the strains in paper biodeterioration. The microatmosphere method showed that volatile compounds of the essential oils have antifungal activity.

  • an environmental assessment of biodeterioration in document repositories
    Biofouling, 2014
    Co-Authors: Paola Lavin, S Gomez G De Saravia, Patricia Sandra Guiamet
    Abstract:

    Experiments were designed (1) to investigate the bioadhesion, biofilm formation, foxing, and micropitting in Documentary collections, (2) to assess the risk of biodeterioration, (3) to investigate the environmental microbial concentration, and (4) to study the influence of environmental factors in biodeterioration of Documentary Heritage in three archives. The importance of this work in the field of biodeterioration of Documentary Heritage was verified by bioadhesion and biofilm formation by microorganisms isolated from the collections under study. Bacillus sp. and Scopulariopsis sp. isolated from paper books showed considerable evidence of attacking the paper structure and of pigment production, constituting a hazard to the loss of Documentary Heritage.

  • determination of indoor air quality in archives and biodeterioration of the Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Sandra Gabriela Gomez De Saravia, Ivette Perdomo
    Abstract:

    Documentary Heritage is permanently subject to suffering from physical, chemical, and/or biological alterations. Biological deterioration by microorganisms (bacteria and fungi) causes undesirable changes on material properties. Microorganisms affect different organic, natural or synthetic substrates (cellulose, polycarbonates), metals, and compounds of optical and magnetic devices (CD, VHS). Paper made by vegetal fibers, functional additives (glue, optical polishers, consolidating agents), and inks with organic bindings are used as sources of nutrients. The environmental microorganisms that form the microbial charge of indoor air at repositories (archives, libraries) storing cultural Heritage can deteriorate the different supports of Heritage importance and affect human health as allergies and skin affections. The aims of this research were to study microbial contamination of the environment and its influence on biodeterioration by the biofilm formation and to analyze the relationship between environment microbiota and biofilm formation in materials stored at three archives in Argentina and in two repositories of the National Archive of the Republic of Cuba.

  • essential oils of plants as biocides against microorganisms isolated from cuban and argentine Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Isbel Vivar, Oderlaise Valdes, Patricia Adriana Battistoni, Sandra Gabriela Gomez De Saravia
    Abstract:

    Natural products obtained from plants with biocidal activity represent an alternative and useful source in the control of biodeterioration of Documentary Heritage, without negative environmental and human impacts. In this work, we studied the antimicrobial activity of seven essential oils against microorganisms associated with the biodeterioration of Documentary Heritage. The essential oils were obtained by steam distillation. The antimicrobial activity was analyzed using the agar diffusion method against 4 strains of fungi and 6 bacterial strains isolated from repositories air and documents of the National Archive of the Republic of Cuba and the Historical Archive of the Museum of La Plata, Argentina. Anise and garlic oils showed the best antifungal activity at all concentrations studied, while oregano oil not only was effective against fungi tested but also prevented sporulation of them all. Orange sweet and laurel oils were ineffective against fungi. Clove, garlic, and oregano oils showed the highest antibacterial activity at 25% against Enterobacter agglomerans and Streptomyces sp., while only clove and oregano oils were effective against Bacillus sp. at all concentrations studied. This study has an important implication for the possible use of the natural products from plants in the control of biodeterioration of Documentary Heritage.

Paola Lavin - One of the best experts on this subject based on the ideXlab platform.

  • scopulariopsis sp and fusarium sp in the Documentary Heritage evaluation of their biodeterioration ability and antifungal effect of two essential oils
    Microbial Ecology, 2016
    Co-Authors: Paola Lavin, Sandra Gabriela Gomez De Saravia, Patricia Sandra Guiamet
    Abstract:

    Fungi produce pigments and acids, generating particular local conditions which modify the physicochemical properties of materials. The aims of this work are (i) to investigate bioadhesion, foxing production and biofilm formation by Scopulariopsis sp. and Fusarium sp. isolated from document collections under laboratory conditions; (ii) to verify attack on cellulose fibres and (iii) to study the possibility of reducing fungal growth using natural products. Biofilm formation and extracellular polymeric substance (EPS) production by fungi were demonstrated in laboratory assays and by scanning electron microscopy (SEM) observations. The biocidal activity of two essential oils of Origanum vulgare L. and Thymus vulgaris L. was evaluated using the microatmosphere method. SEM observations showed that these strains were able to attach to paper and form biofilms, causing damage on them, which demonstrates the biodeterioration ability of these microorganisms. Scopulariopsis sp. and Fusarium sp. isolated from paper books showed the formation of fox-like reddish-brown colour spots, attack to the paper structure and pigment production on aged paper samples. The strains tested produced a decrease in the pH of one unit. This would substantiate the effect of the strains in paper biodeterioration. The microatmosphere method showed that volatile compounds of the essential oils have antifungal activity.

  • an environmental assessment of biodeterioration in document repositories
    Biofouling, 2014
    Co-Authors: Paola Lavin, S Gomez G De Saravia, Patricia Sandra Guiamet
    Abstract:

    Experiments were designed (1) to investigate the bioadhesion, biofilm formation, foxing, and micropitting in Documentary collections, (2) to assess the risk of biodeterioration, (3) to investigate the environmental microbial concentration, and (4) to study the influence of environmental factors in biodeterioration of Documentary Heritage in three archives. The importance of this work in the field of biodeterioration of Documentary Heritage was verified by bioadhesion and biofilm formation by microorganisms isolated from the collections under study. Bacillus sp. and Scopulariopsis sp. isolated from paper books showed considerable evidence of attacking the paper structure and of pigment production, constituting a hazard to the loss of Documentary Heritage.

  • determination of indoor air quality in archives and biodeterioration of the Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Sandra Gabriela Gomez De Saravia, Ivette Perdomo
    Abstract:

    Documentary Heritage is permanently subject to suffering from physical, chemical, and/or biological alterations. Biological deterioration by microorganisms (bacteria and fungi) causes undesirable changes on material properties. Microorganisms affect different organic, natural or synthetic substrates (cellulose, polycarbonates), metals, and compounds of optical and magnetic devices (CD, VHS). Paper made by vegetal fibers, functional additives (glue, optical polishers, consolidating agents), and inks with organic bindings are used as sources of nutrients. The environmental microorganisms that form the microbial charge of indoor air at repositories (archives, libraries) storing cultural Heritage can deteriorate the different supports of Heritage importance and affect human health as allergies and skin affections. The aims of this research were to study microbial contamination of the environment and its influence on biodeterioration by the biofilm formation and to analyze the relationship between environment microbiota and biofilm formation in materials stored at three archives in Argentina and in two repositories of the National Archive of the Republic of Cuba.

  • essential oils of plants as biocides against microorganisms isolated from cuban and argentine Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Isbel Vivar, Oderlaise Valdes, Patricia Adriana Battistoni, Sandra Gabriela Gomez De Saravia
    Abstract:

    Natural products obtained from plants with biocidal activity represent an alternative and useful source in the control of biodeterioration of Documentary Heritage, without negative environmental and human impacts. In this work, we studied the antimicrobial activity of seven essential oils against microorganisms associated with the biodeterioration of Documentary Heritage. The essential oils were obtained by steam distillation. The antimicrobial activity was analyzed using the agar diffusion method against 4 strains of fungi and 6 bacterial strains isolated from repositories air and documents of the National Archive of the Republic of Cuba and the Historical Archive of the Museum of La Plata, Argentina. Anise and garlic oils showed the best antifungal activity at all concentrations studied, while oregano oil not only was effective against fungi tested but also prevented sporulation of them all. Orange sweet and laurel oils were ineffective against fungi. Clove, garlic, and oregano oils showed the highest antibacterial activity at 25% against Enterobacter agglomerans and Streptomyces sp., while only clove and oregano oils were effective against Bacillus sp. at all concentrations studied. This study has an important implication for the possible use of the natural products from plants in the control of biodeterioration of Documentary Heritage.

Sandra Gabriela Gomez De Saravia - One of the best experts on this subject based on the ideXlab platform.

  • scopulariopsis sp and fusarium sp in the Documentary Heritage evaluation of their biodeterioration ability and antifungal effect of two essential oils
    Microbial Ecology, 2016
    Co-Authors: Paola Lavin, Sandra Gabriela Gomez De Saravia, Patricia Sandra Guiamet
    Abstract:

    Fungi produce pigments and acids, generating particular local conditions which modify the physicochemical properties of materials. The aims of this work are (i) to investigate bioadhesion, foxing production and biofilm formation by Scopulariopsis sp. and Fusarium sp. isolated from document collections under laboratory conditions; (ii) to verify attack on cellulose fibres and (iii) to study the possibility of reducing fungal growth using natural products. Biofilm formation and extracellular polymeric substance (EPS) production by fungi were demonstrated in laboratory assays and by scanning electron microscopy (SEM) observations. The biocidal activity of two essential oils of Origanum vulgare L. and Thymus vulgaris L. was evaluated using the microatmosphere method. SEM observations showed that these strains were able to attach to paper and form biofilms, causing damage on them, which demonstrates the biodeterioration ability of these microorganisms. Scopulariopsis sp. and Fusarium sp. isolated from paper books showed the formation of fox-like reddish-brown colour spots, attack to the paper structure and pigment production on aged paper samples. The strains tested produced a decrease in the pH of one unit. This would substantiate the effect of the strains in paper biodeterioration. The microatmosphere method showed that volatile compounds of the essential oils have antifungal activity.

  • determination of indoor air quality in archives and biodeterioration of the Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Sandra Gabriela Gomez De Saravia, Ivette Perdomo
    Abstract:

    Documentary Heritage is permanently subject to suffering from physical, chemical, and/or biological alterations. Biological deterioration by microorganisms (bacteria and fungi) causes undesirable changes on material properties. Microorganisms affect different organic, natural or synthetic substrates (cellulose, polycarbonates), metals, and compounds of optical and magnetic devices (CD, VHS). Paper made by vegetal fibers, functional additives (glue, optical polishers, consolidating agents), and inks with organic bindings are used as sources of nutrients. The environmental microorganisms that form the microbial charge of indoor air at repositories (archives, libraries) storing cultural Heritage can deteriorate the different supports of Heritage importance and affect human health as allergies and skin affections. The aims of this research were to study microbial contamination of the environment and its influence on biodeterioration by the biofilm formation and to analyze the relationship between environment microbiota and biofilm formation in materials stored at three archives in Argentina and in two repositories of the National Archive of the Republic of Cuba.

  • essential oils of plants as biocides against microorganisms isolated from cuban and argentine Documentary Heritage
    International Scholarly Research Notices, 2012
    Co-Authors: Sofia Borrego, Paola Lavin, Patricia Sandra Guiamet, Isbel Vivar, Oderlaise Valdes, Patricia Adriana Battistoni, Sandra Gabriela Gomez De Saravia
    Abstract:

    Natural products obtained from plants with biocidal activity represent an alternative and useful source in the control of biodeterioration of Documentary Heritage, without negative environmental and human impacts. In this work, we studied the antimicrobial activity of seven essential oils against microorganisms associated with the biodeterioration of Documentary Heritage. The essential oils were obtained by steam distillation. The antimicrobial activity was analyzed using the agar diffusion method against 4 strains of fungi and 6 bacterial strains isolated from repositories air and documents of the National Archive of the Republic of Cuba and the Historical Archive of the Museum of La Plata, Argentina. Anise and garlic oils showed the best antifungal activity at all concentrations studied, while oregano oil not only was effective against fungi tested but also prevented sporulation of them all. Orange sweet and laurel oils were ineffective against fungi. Clove, garlic, and oregano oils showed the highest antibacterial activity at 25% against Enterobacter agglomerans and Streptomyces sp., while only clove and oregano oils were effective against Bacillus sp. at all concentrations studied. This study has an important implication for the possible use of the natural products from plants in the control of biodeterioration of Documentary Heritage.

Julia Kim - One of the best experts on this subject based on the ideXlab platform.

Rodríguez Lajusticia, Francisco Saulo - One of the best experts on this subject based on the ideXlab platform.

  • The Late Gothic or Manueline chevet of the church of Santoña and the cloister of Nájera, designed around 1515
    'Editorial de la Universidad de Cantabria', 2020
    Co-Authors: Rodríguez Lajusticia, Francisco Saulo
    Abstract:

    RESUMEN: Ricardo I de Inglaterra, conocido como Corazón de León, es uno de los personajes más famosos de la Historia y también de los más legendarios. Presente en muchas novelas y películas como un héroe de las cruzadas o destronado por su hermano Juan en época de Robin Hood, su visión ha ido cambiando y sus actos se han juzgado mucho más severamente con el paso de los años. El contraste de lo que la literatura y el cine nos han contado con el escaso patrimonio documental que existe sobre el rey es lo que se realiza en este artículo.ABSTRACT: Richard I of England, known as the Lionheart, is one of the most famous and legendary people in History. He appears in a lot of novels and movies as a hero of the Crusades or as a dethroned king by his brother John in the time of Robin Hood. His description has been changing and his acts have been judged more severely over the years. The main purpose of this study is to contrast what literature and cinema showed with the scarce Documentary Heritage about this king

  • The utility of Spanish Documentary Heritage for the reconstruction of the history of the climate and its impact on society
    'Editorial de la Universidad de Cantabria', 2018
    Co-Authors: Rodríguez Lajusticia, Francisco Saulo
    Abstract:

    Resumen: La reconstrucción del clima en el pasado se ha realizado recurriendo a gran cantidad de técnicas tales como el carbono 14, el análisis de sedimentos, la paleobotánica, la paleozoología... Frente a todo esto, el patrimonio documental español es extremadamente rico en datos sobre sequías, riadas, inundaciones, tormentas, terremotos... no sólo de España, sino de prácticamente todo el planeta. No siempre lo suficientemente explotado, este artículo pretende mostrar las enormes posibilidades que dicho patrimonio ofrece para conocer el clima del pasado y su incidencia en la sociedad desde la Edad Media hasta la actualidad.Abstract: The reconstruction of the climate in the past has been made using a lot of techniques such as carbon 14, sediment analysis, paleobotany, paleozoology ... In contrast to all this, the Spanish Documentary Heritage is extremely rich in data on droughts, floods, storms, earthquakes... not only concerning to Spain, but also almost the entire planet. Not always sufficiently explored, this article intends to show the enormous possibilities that this Heritage offers to know the climate of the past and its impact on society from the Middle Ages to the present

  • La utilidad del patrimonio documental español para la reconstrucción de la historia del clima y su incidencia en la sociedad
    2018
    Co-Authors: Rodríguez Lajusticia, Francisco Saulo
    Abstract:

    The reconstruction of the climate in the past has been made using a lot of techniques such as carbon 14, sediment analysis, paleobotany, paleozoology ... In contrast to all this, the Spanish Documentary Heritage is extremely rich in data on droughts, floods, storms, earthquakes... not only concerning to Spain, but also almost the entire planet. Not always sufficiently explored, this article intends to show the enormous possibilities that this Heritage offers to know the climate of the past and its impact on society from the Middle Ages to the present.La reconstrucción del clima en el pasado se ha realizado recurriendo a gran cantidad de técnicas tales como el carbono 14, el análisis de sedimentos, la paleobotánica, la paleozoología... Frente a todo esto, el patrimonio documental español es extremadamente rico en datos sobre sequías, riadas, inundaciones, tormentas, terremotos... no sólo de España, sino de prácticamente todo el planeta. No siempre lo suficientemente explotado, este artículo pretende mostrar las enormes posibilidades que dicho patrimonio ofrece para conocer el clima del pasado y su incidencia en la sociedad desde la Edad Media hasta la actualidad