Positive school climate and strong school identification as protective factors of adolescent mental health and learning engagement: A longitudinal investigation before and during COVID-19.

The COVID-19 pandemic resulted in significant disruptions for children and youth around the world, especially given school closures and shifts in teaching modes (on-line and hybrid). However, the impact of these disruptions remains unclear given data limitations such as a reliance on cross-sectional and/or short-interval surveys as well as a lack of broad indicators of key outcomes of interest. The current research employs a quasi-experimental design by using an Australian four-year longitudinal survey with student responses from Grade 7 to 10 (aged 12-15 years old) (N = 8,735 from 20 schools) in one education jurisdiction. Responses are available pre-pandemic (2018 and 2019) and during the pandemic (2020 and 2021). Importantly the survey included measures of well-being, mental health and learning engagement as well as potential known school-environment factors that could buffer against adversity: school climate and school identification. The findings were generally in line with key hypotheses; 1) during COVID-19 students' learning engagement and well-being significantly declined and 2) students with more positive school climate or stronger school identification pre-COVID-19 fared better through the disruption of the pandemic. However, these same students suffered from a steeper decline in well-being and engagement which may be explained through the impact of losing meaningful social or group connections. This decline was evident after controlling for gender, academic grade (as a proxy of age), parental education, and socioeconomic status. It is concluded that investing in the social environment of schools is important in crisis preparedness and can facilitate better crisis response among youth.

Pediatric Plexiform Fibromyxoma: A Case Report.

The plexiform fibromyxoma is a rare mesenchymal tumor in adults that generally originates in the antrum of stomach, being its occurrence in pediatric patients exceptional. It was classified as a distinct entity by World Health Organization in 2010. No recurrences and metastases have been documented in many of the reported patients to date, being the surgical treatment curative. We report the case of a 3-month-old infant who presented to the emergency department with an episode of intestinal subocclusion requiring an emergent surgery. During the surgical intervention, a mass was identified in the jejunum, causing partial occlusion of its lumen. The surgical pathology report revealed an infiltrative tumor composed of spindle-shaped cells disposed in a stroma with a plexiform pattern alternating myxoid areas. These findings and the immunohistochemical characteristics of the neoplastic cells led to classify the tumor as a plexiform fibromyxoma. A description of the immunophenotype of this tumor is made and differential diagnosis with other gastrointestinal tumors is also discussed.

Compromiso de Asunción. Un llamado a la acción / Commitment of Asunción. A call to action

La Federación Latinoamericana de Terapia Nutricional, Nutrición Clínica y Metabolismo – FELANPE, fue fundada en el año 1988. Reúne a Socie-dades y Asociaciones Interdisciplinarias de Nutrición Clínica y Terapia Nutricional de América Latina y el Caribe, además de España y Portugal.Actualmente la conforman representaciones de 18 países.Se describen los objetivos de la Federación teniendo en cuenta el compromiso asumido.Se trata de estudio observacional transversal, multicéntrico en que se incluyeron 132 hospitales con más de 100 camas, de alta complejidad,estatales y privados de 14 países de Latinoamérica miembros de FELANPE. Se evaluaron las características del hospital, la implementación dela valoración nutricional, el diagnóstico nutricional de pacientes, el equipo responsable de la terapia nutricional, la terapéutica nutricional (oral,enteral y parenteral), la monitorización y el seguimiento nutricional.Para tal, se diseñó y validó un cuestionario digital y un video explicativo para garantizar la calidad de los datos recolectados. La validación seefectúo mediante un estudio piloto realizado en Paraguay, aprobado por el Comité de ética en la Investigación de la Facultad de Ciencias Médicasde la Universidad Nacional de Asunción. La investigación actual cuenta con la aprobación del Comité de ética de Investigación de la Facultad deCiencias Químicas de la Universidad Nacional de Asunción y del Comité de ética de FELANPE.Los resultados presentados en el XVIII Congreso Latinoamericano de FELANPE, en Asunción del Paraguay, el 12 de octubre del 2023, sirven comobase para caracterizar la implementación de la Terapia Nutricional Parenteral y Enteral (terapia nutricional médica) en Hospitales de Latinoaméricay son utilizados como sustento técnico del presente Compromiso de Asunción.(AU)

The Latin American Federation of Nutritional Therapy, Clinical Nutrition, and Metabolism – FELANPE, was founded in 1988. It brings togetherinterdisciplinary societies and associations in Clinical Nutrition and Nutritional Therapy from Latin America and the Caribbean, as well as Spainand Portugal. Currently, it comprises representations from 18 countries.The objectives of the Federation are described, taking into account the assumed commitment. This is an observational cross-sectional, multicenterstudy that included 132 hospitals with more than 100 beds, of high complexity, both state-owned and private, from 14 countries in Latin Americathat are members of FELANPE. The study assessed hospital characteristics, implementation of nutritional assessment, nutritional diagnosis ofpatients, the team responsible for nutritional therapy, nutritional therapy (oral, enteral, and parenteral), monitoring, and nutritional follow-up.For this purpose, a digital questionnaire and an explanatory video were designed and validated to ensure the quality of the collected data. Validationwas carried out through a pilot study conducted in Paraguay, approved by the Ethics Committee for Research at the Faculty of Medical Sciences ofthe National University of Asunción. The current research has the approval of the Research Ethics Committee of the Faculty of Chemical Sciencesof the National University of Asunción and the Ethics Committee of FELANPE.The results presented at the XVIII Latin American Congress of FELANPE in Asunción, Paraguay, on October 12, 2023, serve as a basis for cha-racterizing the implementation of Parenteral and Enteral Nutritional Therapy (medical nutritional therapy) in hospitals in Latin America and areused as technical support for the present Asunción Commitment.(AU)

[Commitment of Asunción. A call to action]. / Compromiso de Asunción. Un llamado a la acción.

Introduction: The Latin American Federation of Nutritional Therapy, Clinical Nutrition, and Metabolism - FELANPE, was founded in 1988. It brings together interdisciplinary societies and associations in Clinical Nutrition and Nutritional Therapy from Latin America and the Caribbean, as well as Spain and Portugal. Currently, it comprises representations from 18 countries. The objectives of the Federation are described, taking into account the assumed commitment. This is an observational cross-sectional, multicenter study that included 132 hospitals with more than 100 beds, of high complexity, both state-owned and private, from 14 countries in Latin America that are members of FELANPE. The study assessed hospital characteristics, implementation of nutritional assessment, nutritional diagnosis of patients, the team responsible for nutritional therapy, nutritional therapy (oral, enteral, and parenteral), monitoring, and nutritional follow-up. For this purpose, a digital questionnaire and an explanatory video were designed and validated to ensure the quality of the collected data. Validation was carried out through a pilot study conducted in Paraguay, approved by the Ethics Committee for Research at the Faculty of Medical Sciences of the National University of Asunción. The current research has the approval of the Research Ethics Committee of the Faculty of Chemical Sciences of the National University of Asunción and the Ethics Committee of FELANPE. The results presented at the XVIII Latin American Congress of FELANPE in Asunción, Paraguay, on October 12, 2023, serve as a basis for characterizing the implementation of Parenteral and Enteral Nutritional Therapy (medical nutritional therapy) in hospitals in Latin America and are used as technical support for the present Asunción Commitment.

Introducción: La Federación Latinoamericana de Terapia Nutricional, Nutrición Clínica y Metabolismo ­ FELANPE, fue fundada en el año 1988. Reúne a Sociedades y Asociaciones Interdisciplinarias de Nutrición Clínica y Terapia Nutricional de América Latina y el Caribe, además de España y Portugal. Actualmente la conforman representaciones de 18 países. Se describen los objetivos de la Federación teniendo en cuenta el compromiso asumido. Se trata de estudio observacional transversal, multicéntrico en que se incluyeron 132 hospitales con más de 100 camas, de alta complejidad, estatales y privados de 14 países de Latinoamérica miembros de FELANPE. Se evaluaron las características del hospital, la implementación de la valoración nutricional, el diagnóstico nutricional de pacientes, el equipo responsable de la terapia nutricional, la terapéutica nutricional (oral, enteral y parenteral), la monitorización y el seguimiento nutricional. Para tal, se diseñó y validó un cuestionario digital y un video explicativo para garantizar la calidad de los datos recolectados. La validación se efectúo mediante un estudio piloto realizado en Paraguay, aprobado por el Comité de Ética en la Investigación de la Facultad de Ciencias Médicas de la Universidad Nacional de Asunción. La investigación actual cuenta con la aprobación del Comité de Ética de Investigación de la Facultad de Ciencias Químicas de la Universidad Nacional de Asunción y del Comité de Ética de FELANPE. Los resultados presentados en el XVIII Congreso Latinoamericano de FELANPE, en Asunción del Paraguay, el 12 de octubre del 2023, sirven como base para caracterizar la implementación de la Terapia Nutricional Parenteral y Enteral (terapia nutricional médica) en Hospitales de Latinoamérica y son utilizados como sustento técnico del presente Compromiso de Asunción.

Sex disparities in parenteral and enteral nutrition societies' leadership worldwide: a 20-year retrospective analysis.

BACKGROUND: Despite advancements in the global dialog surrounding sex and gender equity, an important gap persists with women markedly underrepresented in major roles within health care leadership. OBJECTIVES: We examined the extent of women's representation in prominent positions within parenteral and enteral nutrition (PEN) societies worldwide over a span of 2 decades. DESIGN: This retrospective analysis explored the sex distribution of society chairs, conference presidents, and editor-in-chief positions across 64 PEN societies between 2003 and 2022. Additionally, data on the first and last authors of endorsed clinical guidelines were collected from the 2 leading societies. RESULTS: Over the past 20 y, women held society chair positions in 34.4% of cases. The representation shifted from 30% during the decade from 2003 to 2012 to 40.5% from 2013 to 2022. Throughout these years, the numbers consistently ranged from 0 to 10; however, the median shifted upward from 1 during the first decade to 4 in the subsequent decade (P = 0.04). Of 420 congress presidencies, ∼30% were women. In endorsed guidelines, women were the first authors in 27.1% of cases (P < 0.001) and the last in 28.9% (P < 0.001) compared with men. Of the 123 journal editor-in-chief positions, women occupied 23 (18.7%). CONCLUSION: Over the last 2 decades, women have been consistently underrepresented in prominent leadership roles in PEN societies globally. Although there has been a noticeable shift toward more women in chair positions, true sex equality remains elusive. Moreover, sex disparities are even more pronounced in positions, such as conference presidents, authors of major guidelines, and editors-in-chief of society-affiliated journals. These data underscore the pressing need to enhance efforts toward sex equality across these domains.

The role of group memberships and school identification on student well-being.

There are widespread concerns about a decline in young people's mental health. One promising direction to address this issue involves group memberships and social identity processes. Despite progress, there are several issues in current theory and research including (1) whether the number of groups to which an individual belongs is related to more positive well-being, (2) better understanding the relationship between group memberships and social identification processes and (3) the need for more comprehensive longitudinal methods. The goal of this study was to address these issues using a three-wave longitudinal design (n = 1331) conducted with high-school students. Both the number and importance (an indicator of social identification) of student extracurricular activities (ECA) were assessed as predictors of six well-being outcomes. Importantly, we also assessed whether identification with the school as the context in which the ECAs were situated mediated this association. Results show that, generally, the number of group memberships had no direct effect on well-being, however, there was a consistent mediation via school identification. When considering number and importance of one model (comprising a subsample) importance emerged as the key predictor. Such findings advance understanding of the social identity and well-being relationship and have practical implications.

Optimal Laboratory Cultivation Conditions of Limnospira maxima for Large-Scale Production.

Cultivating Limnospira maxima, renowned for its abundant proteins and valuable pigments, faces substantial challenges rooted in the limited understanding of its optimal growth parameters, associated high costs, and constraints in the procurement of traditional nitrogen sources, particularly NaNO3. To overcome these challenges, we conducted a comprehensive 4 × 3 factorial design study. Factors considered included white, red, blue, and yellow light spectra, along with nitrogen sources NaNO3 and KNO3, as well as a nitrogen-free control, for large-scale implementation. Optimal growth, measured by Optical Density, occurred with white and yellow light combined with KNO3 as the nitrogen source. These conditions also increased dry weight and Chl-a content. Cultures with nitrogen deprivation exhibited high values for these variables, attributed to carbon accumulation in response to nitrogen scarcity. Phycocyanin, a crucial pigment for nutrition and industry, reached its highest levels in cultures exposed to white light and supplemented with KNO3, with an impressive content of 384.11 g kg-1 of dry weight. These results highlight the efficacy and cost-efficiency of using a combination of white light and KNO3 for large-scale L. maxima cultivation. This strategy offers promising opportunities to address global food security challenges and enhance the production of industrially relevant pigments.

The curative effect of schools: A longitudinal study of the impact of school climate, school identification, and resilience on adolescent mental health.

Mental illness in adolescents is on the rise, thus it is vital to study factors that can improve youth mental health. The extant theory and research have identified both social (school climate; school identification) and individual (resilience) constructs as protectors of mental health. However, these protective factors remain in silo and require further integration. To address this issue, the present study proposed and investigated an integrative model in which social factors (i.e., school climate, school identification) nurture individual (i.e., resilience) protective factors, which in turn impact adolescent mental health. Using three-wave longitudinal data (2017-2019) from school students (Grades 7-8; N = 1,357), we found evidence supporting the integrated model examining five dimensions of mental health: anxiety, depression, happiness, life satisfaction, and positive affect. Greater Wave 1 school climate predicted greater identification 1 year later, which in turn predicted greater resilience. Furthermore, greater resilience predicted lower depression and anxiety, and greater happiness, life satisfaction, and positive affect 1 year later. These results support efforts to strengthen the school climate and reconceptualize resilience as an outcome of social processes. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

The international spinal cord injury pain basic data set (version 3.0).

STUDY DESIGN: Expert opinion, feedback, revisions, and final consensus. OBJECTIVES: To update the International Spinal Cord Injury Pain Basic Data Set (ISCIPBDS version 2.0) and incorporate suggestions from the SCI pain clinical and research community with respect to overall utility. SETTING: International. METHODS: The ISCIPBDS working group evaluated these suggestions and made modifications. The revised ISCIPBDS (Version 3.0) was then reviewed by members of the International SCI Data Sets Committee, the American Spinal Injury Association (ASIA) Board, the International Spinal Cord Society (ISCoS) Executive and Scientific Committees, individual reviewers and societies, and posted on the ASIA and ISCoS websites for 1 month to elicit comments before final approval by ASIA and ISCoS. RESULTS: The ISCIPBDS (Version 3.0) was updated to make the dataset more flexible and useful: 1. The assessment can be based on the patient's perception of several of his/her "worst" pain(s) or based on the International SCI Pain (ISCIP) Classification-defined or other pain types, depending on the specific research questions or clinical needs. 2. Pain interference should usually be rated for overall pain but may also be used for specific pain problems if needed. 3. An optional pain drawing was added to complement the check box documentation of pain location. 4. Data categories consistent with the Extended Pain Dataset list of current treatments were added. 5. Several new training cases were added.

Characterization and cytotoxicity assessment of cadmium sulfide quantum dots synthesized with Fusarium oxysporum f. sp. lycopersici.

The potential of CdS quantum dots for biomedical and bioimaging applications depends on their cytotoxicity, which can be modulated by coating molecules. Using sulfur as a precursor can be used along with cadmium nitrate to synthesize CdS quantum dots with the fungus Fusarium oxysporum f. sp. lycopersici. The latter replaces pure chemical sulfur as a precursor for CdS quantum dot synthesis, thus transforming waste into a value-added product, increasing sustainability, reducing the environmental impact of the process through the implementation of green synthesis techniques, and contributing to the circular economy. Therefore, we compared the cytotoxicity on HT-29 cells of biogenic, and chemical CdSQDs, synthesized by a chemical method using pure sulfur. Biogenic and chemical CdSQDs had diameters of 4.08 ± 0.07 nm and 3.2 ± 0.20 nm, Cd/S molar ratio of 43.1 and 1.1, Z-potential of - 14.77 ± 0.64 mV and - 5.52 ± 1.11 mV, and hydrodynamic diameters of 193.94 ± 3.71 nm and 152.23 ± 2.31 nm, respectively. The cell viability improved 1.61 times for biogenic CdSQDs over chemical CdSQDs, while cytotoxicity, measured as IC50, diminished 1.88-times. The lower cytotoxicity of biogenic CdSQDs was attributed to their organic coating consisting of lipids, amino acids, proteins, and nitrate groups that interacted with CdS through -OH and -SH groups. Therefore, the biogenic synthesis of CdSQDs has repurposed a pathogenic fungus, taking advantage of the biomolecules it secretes, to transform hazardous sulfur waste and metal ions into stable CdSQDs with advantageous structural and cytotoxic properties for their potential application in biomedicine and bioimaging.

Canadian Nutrition Society Dialogue on disease-related malnutrition: a commentary from the 2022 Food For Health Workshop.

This commentary represents a dialogue on key aspects of disease-related malnutrition (DRM) from leaders and experts from academia, health across disciplines, and several countries across the world. The dialogue illuminates the problem of DRM, what impact it has on outcomes, nutrition care as a human right, and practice, implementation, and policy approaches to address DRM. The dialogue allowed the germination of an idea to register a commitment through the Canadian Nutrition Society and the Canadian Malnutrition Task Force in the UN/WHO Decade of Action on Nutrition to advance policy-based approaches for DRM. This commitment was successfully registered in October 2022 and is entitled CAN DReaM (Creating Alliances Nationally for Policy in Disease-Related Malnutrition). This commitment details five goals that will be pursued in the Decade of Action on Nutrition. The intent of this commentary is to record the proceedings of the workshop as a stepping stone to establishing a policy-based approach to DRM that is relevant in Canada and abroad.

School climate, school identification and student outcomes: A longitudinal investigation of student well-being.

BACKGROUND: Schools are increasingly recognized as key facilitators of child and youth well-being. Much attention has been directed to the school social environment and the areas of school climate or school connectedness/identification. Drawing on the social identity approach and related work, it has been argued that school social identification may be the mechanism or process through which school climate comes to impact individual student functioning (Applied Psychology, 28, 2009, 171). Much of the previous research on social identity and well-being, though, is limited because it is cross-sectional. AIMS, SAMPLE & METHODS: This current study aims to advance understanding of the relationships between school climate, school identification and positive and negative well-being. It adopts a three-wave longitudinal sample of Australian students (N = 6537 wave 3, grades 7-10) and incorporates a range of control variables. Multilevel modelling (MLM) is used to test relationships of interest. RESULTS AND CONCLUSIONS: In line with predictions, school identification was a significant mediator of the relationship between school climate and the well-being dimensions of positive affect and depression (but not anxiety). The substantial theoretical and practical implications of this research are discussed, including the role of the school social environment in helping young people successfully transition to adulthood.

The international declaration on the human right to nutritional care: A global commitment to recognize nutritional care as a human right.

Access to nutritional care is frequently limited or denied to patients with disease-related malnutrition (DRM), to those with the inability to adequately feed themselves or to maintain their optimal healthy nutritional status which goes against the fundamental human right to food and health care. That is why the International Working Group for Patient's Right to nutritional care is committed to promote a human rights based approach (HRBA) in the field of clinical nutrition. Our group proposed to unite efforts by launching a global call to action against disease-related malnutrition through The International Declaration on the Human Right to Nutritional Care signed in the city of Vienna during the 44th ESPEN congress on September 5th 2022. The Vienna Declaration is a non-legally binding document that sets a shared vision and five principles for implementation of actions that would promote the access to nutritional care. Implementation programs of the Vienna Declaration should be promoted, based on international normative frameworks as The United Nations (UN) 2030 Agenda for Sustainable Development, the Rome Declaration of the Second International Conference on Nutrition and the Working Plan of the Decade of Action on Nutrition 2016-2025. In this paper, we present the general background of the Vienna Declaration, we set out an international normative framework for implementation programs, and shed a light on the progress made by some clinical nutrition societies. Through the Vienna Declaration, the global clinical nutrition network is highly motivated to appeal to public authorities, international governmental and non-governmental organizations and other scientific healthcare societies on the importance of optimal nutritional care for all patients.

Asociación entre patrones alimentarios y factores sociodemográficos en la población adulta de Antioquia, Colombia

Objetivo: identificar los patrones alimentarios de la población adulta Antioqueña y su asociación con variables socioeconómicas. Métodos: estudio transversal con muestra aleatoria de 1.394 adultos de 18 a 59 años, derivados del estudio Perfil alimentario y nutricional de Antioquia 2019. El consumo alimentario fue evaluado con recordatorio de consumo en 24 horas (R24h) y un segundo R24h en día no consecutivo al 25% de la muestra, se cuantificó el consumo de alimentos en gramos, los patrones alimentarios se establecieron mediante análisis factorial por Componentes principales con rotación ortogonal varimax. Para verificar la asociación entre los patrones alimentarios y las variables socioeconómicas se empleó regresión de Poisson por varianza robusta. Resultados: se definieron tres patrones alimentarios que representan el 28,1% de la varianza: "Tradicional" (9,8%), "Regional" (9,7%) y "Prudente" (8,6%). Los dos primeros se asociaron con variables demográficas, como sexo, edad y etnia; mientras que el último se asoció con variables socioeconómicas como escolaridad, ingresos familiares, régimen de seguridad social y clasificación de seguridad alimentaria. Conclusiones: Los hallazgos del presente estudio muestran que la dieta de la población estudiada, sigue unos referentes de tradición alimentaria, reflejados en los patrones Tradicional y Regional, mientras que el patrón Prudente, corresponde a la parte de la población que tiene mejores condiciones socioeconómicas y probablemente lo siguen por recomendación de salud.

Objective: to identify the eating patterns of the adult population from Antioquia, Colombia, and their association with socioeconomic variables. Methods: a cross-sectional study was performed with a random sample of 1,394 adults aged 18 to 59 years, derived from the Antioquia Food and Nutritional Profile 2019 study. Food consumption was evaluated with a 24-hour consumption recall (R24h) and a second R24h on a non-consecutive day at 25% of the sample, food consumption was quantified in grams, and food patterns were established by factorial analysis by Principal Components with varimax orthogonal rotation. To verify the association between eating patterns and socioeconomic variables, Poisson regression was used for robust variance. Results: three eating patterns were defined that represent 28.1% of the variance: "Traditional" (9.8%), "Regional" (9.7%), and "Prudent" (8.6%). The first two were associated with demographic variables, such as gender, age, and ethnicity; while the latter was associated with socioeconomic variables such as schooling, family income, social security system, and food security classification. Conclusions: The findings of this study show that the diet of the population of the study, follows some references to food tradition, reflected in the Traditional and Regional patterns, while the Prudent pattern corresponds to the part of the population that has better socioeconomic conditions, and they probably follow it for health recommendation.

Motor development in premature infants: Study protocol for an interdisciplinary hospital-home intervention.

BACKGROUND: Deviations occur in the neuropsychomotor development of premature infants; early interventions minimize delay motor. This study aimed to determine the effect of an interdisciplinary hospital-home intervention addressing motor development adaptation in premature infants in Colombia in comparison with traditional interventions. METHODS: This study was based on a parallel design, with two groups, namely, experimental and control. The experimental group, hospital-home intervention (HHI) performed in two settings (i.e., hospital neonatal care units and homes), and the control group, traditional intervention, (TI) performed in institutions for premature infants. The sample will be composed of 130 randomly-allocated infants, 65 in the experimental group (HHI) and 65 in the control group (TI) of moderate to late preterm infants (gestational age between 34 and 37 weeks), weighing more than or equal to 1.800 g, who are hemodynamically stable and reside in the cities of Tunja and Bogotá-Colombia recruited between 2021 and 2022. For the pre- and post-intervention assessments, the TIMPSI and the CapDMP are the instruments used to assess motor development and the degree of parents' or caregivers' knowledge about motor development. The HHI is composed of 10 intervention strategies based on stimulation of motor development, performed twice a day for 10 min for two months, in combination with calls to a mobile device, using software (Baby Motor Skills) and an instant messaging system (WhatsApp). RESULTS: This hospital-home intervention program proposes an approach focused on the motor development of premature infants, based on sensory and motor stimulation strategies, in addition to follow-up performed at home with the use of a mobile application that improves the motor development of premature infants. Register Clinical Trial: NCT04563364. CONCLUSION: The HHI provides the opportunity to determine whether the individualized four-week from admission to follow up at home with parent training will improve the motor skills of premature infants.

Sargassum@magnetite Composite EDTA-Functionalized for the Potential Removal of Mercury.

Sargassum spp. affects the Caribbean shores; thus, its remotion or valorization is a priority. This work aimed to synthesize a low-cost magnetically retrievable Hg+2 adsorbent functionalized with ethylenediaminetetraacetic acid (EDTA) based on Sargassum. The Sargassum was solubilized to synthesize by co-precipitation a magnetic composite. A central composite design was assessed to maximize the adsorption of Hg+2. The solids yield magnetically attracted mass, and the saturation magnetizations of the functionalized composite were 60.1 ± 17.2%, 75.9 ± 6.6%, and 1.4 emu g-1. The functionalized magnetic composite yielded 29.8 ± 0.75 mg Hg+2 g-1 of chemisorption after 12 h, pH 5, and 25 °C achieving 75% Hg+2 adsorption after four reuse cycles. Crosslinking and functionalization with Fe3O4 and EDTA created differences in surface roughness as well as the thermal events of the composites. The Fe3O4@Sargassum@EDTA composite was a magnetically recovered biosorbent of Hg2+.