Rosa Acevedo-Barrios

• Biologist MSc Microbiology PhD Environmental Toxicology
• Associate professor at Universidad Tecnológica de Bolívar

Cigarette butts (CBs) discarded on tourist beaches represent an emerging waste concern in marine-coastal ecosystems due to their persistence, low degradability, and toxicity. This study investigated CBs, cigarette butt fibers (CBFs), and beach sand in Cartagena, Colombia, as potential substrates for microbial growth. Samples were collected over fiv...

Perchlorate (ClO 4 −), which is a powerful endocrine disruptor affecting iodine fixation in the thyroid gland in humans and in biota, is a pollutant of natural and anthropogenic origin. For this reason, this pollutant must be eliminated from the ecosystems. It has been found in extreme environments such as Antarctica. ClO 4 − reduction can be achie...

There is a worldwide problem of perchlorate contamination due to its negative effects on marine ecosystems and loss of environmental quality, which is increasing with anthropic activity. It is classified as an endocrine disruptor with toxic effects on humans and biota, mainly affecting the fixation of iodine by the thyroid gland, responsible for re...

Respiratory allergies caused by fungal spores affect 30% of individuals with a genetic predisposition, and severe asthma symptoms can even be fatal. Despite the importance of detecting and preventing these allergies, traditional aerobiological sampling methods involve manual microscopic analysis, a task that requires significant time and highly ski...

The 2030 Agenda, established in 2015, contains seventeen Sustainable Development Goals (SDGs) aimed at addressing global challenges. SDG-06, focused on clean water, drives the increase in basic sanitation coverage, the management of wastewater discharges, and water quality. Wastewater treatment could contribute to achieving 11 of the 17 SDGs. For t...

Three extremophile bacterial strains (BBCOL-009, BBCOL-014 and BBCOL-015), capable of degrading high concentrations of perchlorate at a range of pH (6.5 to 10.0), were isolated from Colombian Caribbean Coast sediments. Morphological features included Gram negative strain bacilli with sizes averaged of 1.75 × 0.95, 2.32 × 0.65 and 3.08 × 0.70 μm, re...

Certain emerging pollutants are among the most widely used chemicals globally, causing widespread concern in relation to their use in products devoted to cleaniness and asepsis. Nonylphenol ethoxylate (NPEOn) is one such contaminant, along with its degradation product, nonylphenol, an active ingredient presents in nonionic surfactants used as herbi...

This review work focuses on the economic environment and food security, two pillars of vital importance in the households and communities of South America. Food security represents a vulnerable link in the chain that connects ecological and economic crises that are significantly impacting our planet. The global food system is at a critical crossroa...

Mangroves are ecosystems within the intertidal zone of tropical and subtropical coasts; they offer ecosystem services such as protection from coastal erosion and storms and flood control, act as carbon sinks and are also sources of income by providing various forest products. However, their cover is rapidly disappearing worldwide, which makes the d...

Perchlorate is an emerging contaminant of anthropogenic and/or natural origin that affects the biotic component and human health, mainly because it is a powerful endocrine disruptor, mainly affecting the fixation of iodine by the thyroid gland, responsible for regulating metabolism. growth and development, which is why it is considered dangerous fo...

Bacteria are an important biological component present in bioaerosols and can cause disease in humans and animals and damage vegetation. In the city of Cartagena de Indias there is limited information on the environmental bacteria present in the air and the microbiological quality in that environment. Therefore, the purpose of this study was to eva...

Perchlorate (ClO4 -) is an ion that occurs naturally in Antarctica, it is considered an emerging pollutant because it is a powerful endocrine disruptor that affects the functioning of the thyroid gland and the growth and development of humans and biota. The objective of this study was to characterize salt-tolerant bacteria that reduce (ClO4 -) from...

It is essential to understand bacterial succession during the development of dental caries and determine the microorganisms related to this disease. This work aimed to identify bacteria associated with cariogenic pieces and carry out an antibiogram assay. First, we isolated bacterial isolates using MALDI TOF-MS and species-specific PCR techniques....

The demands in the field of cleanliness and asepsis have gradually evolved. Emerging pollutants are among the most widely used chemicals globally. Nonylphenol ethoxylate (NPEOn) is one such contaminant, along with its degradation product, nonylphenol (NP), an active ingredient presents in nonionic surfactants used as herbicides, cosmetics, paints,...

Deforestation and fragmentation threaten biodiversity owing to their impacts on many species. To prevent and minimise the problem, protected areas have been created with the aim of conserving biodiversity, and parts of continental territories have been designated for this purpose. However, these areas are not exempt from forest loss and can be dire...

The Corchal “El Mono Hernández” Fauna and Flora Sanctuary is a protected area located in northern Colombia and is home to the Pterocarpus officinalis forest. In this area, however, this forest cover is declining due to natural causes associated with a change in the hydrosedimentological dynamics. Multitemporal assessment was performed to quantify t...

Perchlorate is a contaminant that can persist in groundwater and soil, and is frequently detected in diferent ecosystems at concentrations relevant to human health. This study isolated and characterised halotolerant bacteria that can potentially perform perchlorate reduction. Bacterial microorganisms were isolated from marine sediments on Deception...

Bioaerosols are as small particles suspended in air that contain several microorganisms (bacteria, fungi, and viruses). These particles are studied because of the possible impacts that they have on the health of humans and animals in open and closed spaces. In this study, the presence of airborne fungi presents in a Higher Education Institution (HE...

Perchlorate is an emerging naturally occurring contaminant in Antarctica that affects thyroid function by inhibiting iodine uptake; which is frequently detected in different ecosystems in concentrations relevant to human health and biota. In this study, we measured the perchlorate concentrations of 3000 samples of marine sediments, using a selectiv...

Approximately 98% of the surface of Antarctica is constantly covered with ice, thus becoming an extreme environment with particular conditions of temperature, pH, radiation and salinity, which harbor microorganisms known as extremophiles. Within this group we find the psychrophiles, which are organisms capable of living optimally at temperatures <1...

Perchlorate of natural origin is a persistent pollutant that affects thyroid function by inhibiting iodine uptake, and this pollutant is frequently detected in different ecosystems at concentrations that can harm human health. In this study, we measured the perchlorate concentrations in 3,000 marine sediment samples from January to March in 2017, 2...

Perchlorate is a persistent pollutant, generated via natural and anthropogenic processes, that possesses a high potential for endocrine disruption in humans and biota. It inhibits iodine fixation, a major reason for eliminating this pollutant from ecosystems. Remediation of perchlorate can be achieved with various physicochemical treatments, especi...

Perchlorate is an emerging pollutant of anthropogenic and / or natural origin that affects biota and human health mainly because it is a powerful endocrine disruptor (1). Perchlorate is naturally present due to electrical storms and atmospheric reactions related to chlorine and ozone (1). (two). In fact, this pollutant persists in the soils and ice...

Perchlorate (ClO4-) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies for bioremediation in polluted sites. The aim of this study was to isolate and characterize halophilic bacteria with the potential...

Perchlorate (ClO 4-) is an emerging inorganic pollutant widely distributed in the environment, derived from natural and anthropogenic sources. It is considered a potent endocrine disruptor that affect the iodine fixation by the thyroid gland, impacting metabolism, reproduction and development in the biota. However, there are few reports of its ecot...

Perchlorate (ClO4-) is an emerging inorganic pollutant widely distributed in the environment, derived from natural and anthropogenic sources. It is considered a potent endocrine disruptor that affect the iodine fixation by the thyroid gland, impacting metabolism, reproduction and development in the biota. However, there are few reports of its ecoto...

Perchlorate (ClO 4⁻ ) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies for bioremediation in polluted sites. The aim of this study was to isolate and characterize halophilic bacteria with the potenti...

Bioaerosols are particles of living or dead biological material released into the atmosphere from the biosphere that play a vital role in ecosystem dynamics, and they affect agriculture, climate and human health. Scientific data about concentrations and identification of fungal spores, airborne bacteria, pollen and other primary biological particle...

Perchlorate is an inorganic ion widespread in the environment, generated as a natural and anthropogenic pollutant, with known endocrine disruption properties in the thyroid gland. Nonetheless, there are few reports of its ecotoxicological impact on wildlife. The aim of this study was to evaluate the adverse effects of KClO4 exposure on different ce...

El establecimiento de un sistema de alerta temprana de contaminación en las playas tiene un efecto muy importante en la protección de la calidad de las playas. En este estudio, se evaluó la calidad ambiental de las playas del sector turístico de Cartagena de Indias mediante la caracterización de parámetros fisicoquímicos in situ (temperatura, pH, s...

En este artículo se detallan los efectos tóxicos del paracetamol en la salud humana y el ambiente, detallando las generalidades del paracetamol APAP. El metabolismo del APAP y factores potenciales que influyen en su toxicidad, pasando por estudios de toxicidad y por último el destino ambiental. El paracetamol es un analgésico de uso común, presenta...

Perchlorate is widely used in several industrial applications, and is frequently detected in environmental matrices at concentrations relevant to human health, in particular inhibition of thyroid hormone synthesis. Perchlorate decontamination of environmental using halophyte bacteria are a promising bioremediation strategy.To isolate and characteri...

Perchlorate is widely used in several industrial applications, and is frequently detected in environmental matrices at concentrations relevant to human health, in particular inhibition of thyroid hormone synthesis. Perchlorate decontamination of environmental using halophyte bacteria are a promising bioremediation strategy. The aim of this work wer...

En la presente revisión, se detalla la temática de bacterias resistentes a antibióticos en ecosistemas acuáticos, caracterizando el panorama de la resistencia bacteriana a los antibióticos, se hace la discusión de la difusión de los antibióticos en el medio ambiente, estudiando las fuentes de antibióticos en los ecosistemas acuáticos y por último s...

The QuBiLs-MAS approach is used for the in silico modelling of the antifungal activity of organic molecules. To this effect, non-stochastic (NS) and simple-stochastic (SS) atom-based quadratic indices are used to codify chemical information for a comprehensive dataset of 2478 compounds having a great structural variability, with 1087 of them being...

El objetivo del trabajo presentado fue evaluar la calidad fisicoquímica y microbiología del agua consumida en el municipio de Turbaco. Se tomaron muestras en nueve (9) puntos, analizándose parámetros in situ y una posterior fase de laboratorio, seguidamente de una comparación con la normatividad vigente. Los resultados fisicoquímicos mostraron una...

In the recent times, the race to cope with the increasing multidrug resistance of pathogenic bacteria has lost much of its momentum and health professionals are grasping for solutions to deal with the unprecedented resistance levels. As a result, there is an urgent need for a concerted effort towards the development of new antimicrobial drugs to st...

En el presente trabajo se realiza una fundamentación de los mapas conceptuales en las Ciencias Ambientales a partir de una revisión bibliográfica exhaustiva. En este sentido, los mapas conceptuales, dirigi- dos a la resolución de problemas de ciencia y la facilidad como estrategia de enseñanza-aprendizaje, implican el abordaje de situaciones proble...

En este trabajo se evaluo los términos de exactitud y precisión de la metodología para la Determinación de Demanda Química de Oxígeno en Aguas por Reflujo Cerrado y Colorimetría.

En este estudio se identifican de bacterias resistentes a di-bromo-mercurio aisladas en sedimentos marinos de playas de la ciudad de Cartagena de Indias, Colombia, mediante el aislamiento, purificación y preservación bacterias marinas resistente a antibióticos, la identificación microscópica y bioquímica, prueba susceptibilidad a di-bromo-mercurio....

La búsqueda de alternativas energéticas de origen renovable y la disminución de gases de efecto invernadero provenientes de la descomposición de desechos orgánicos hacen del biogás una prometedora alternativa para la sustitución de combustibles fósiles y para la valorización energética de residuos orgánicos en zonas urbanas, rurales y agroindustria...

La meta de un análisis químico de aguas es generar resultados correctos y confiables; la validación de ensayos es uno de los aspectos más importantes para conseguir este propósito. Además, constituye un factor clave para la prestación de servicios analíticos. La Espectroscopia de Absorción Atómica con Llama Óxido Nitroso-Acetileno es una de las met...