The purpose of this article is to describe the activities and during the experience lived in the teaching internship the covid-19 pandemic. This is a descriptive study of the type of experience experienced in the teaching internship during the covid-19 crisis. The study was carried out during two academic semesters in the discipline of Nutritional Assessment in the Bachelor's Degree in Nutrition at a public university in Northeast Brazil. An adaptation of the face-to-face classes was made using tools (Google Meet, point online, Metimeter and Kahoot) and asynchronous (WhatsApp and SIGAA) tools, in addition to the Google Forms form for the evaluations. Despite the context, the teaching stage of the current pandemic teaching was carried out successfully and with an edifying learning of practice in Higher Education. The experience can share experiences and experiences with other trainee teachers, monitors and guiding teachers and the search for new methodologies and tools that help the teaching-learning process.

El objetivo de este artículo es describir las actividades desarrolladas y la experiencia vivida en la pasantía docente durante la pandemia del covid-19. Se trata de un estudio descriptivo del tipo relato de experiencia vivida en las prácticas docentes durante la crisis del covid-19. El estudio se llevó a cabo durante dos semestres académicos en la disciplina de Evaluación Nutricional en la Licenciatura en Nutrición de una universidad pública del Nordeste de Brasil. Se realizó una adaptación de las clases presenciales utilizando herramientas síncronas (Google Meet, Power point online, Metimeter y Kahoot) y asíncronas (WhatsApp y SIGAA), además del formulario Google Forms para las actividades de evaluación. A pesar del actual contexto de pandemia, la pasantía docente reportada en este artículo se llevó a cabo con éxito y con un edificante aprendizaje de la práctica docente en la Educación Superior. La experiencia permitió compartir conocimientos teóricos y experiencias con los estudiantes de grado y con otros docentes en formación, monitores y docentes tutores y la búsqueda de nuevas metodologías y herramientas que ayudaran al proceso de enseñanza-aprendizaje.

O objetivo deste artigo é descrever as atividades desenvolvidas e a experiência vivenciada no estágio docente durante a pandemia da covid-19. Trata-se de um estudo descritivo do tipo relato de experiência vivenciado no estágio docente durante a crise da covid-19. O estudo foi realizado durante dois semestres letivos na disciplina de Avaliação Nutricional no curso de Bacharelado em Nutrição de uma universidade pública do Nordeste brasileiro. Foi feita uma adaptação das aulas presenciais com uso de ferramentas síncronas (Google Meet, Power point online, Metimeter e Kahoot) e assíncronas (WhatsApp e SIGAA), além do formulário do Google Forms para as atividades avaliativas. Apesar do contexto atual de pandemia, o estágio em docência relatado neste artigo foi realizado com êxito e com uma aprendizagem edificante da prática docente no Ensino Superior. A experiência possibilitou compartilhar conhecimentos teórico e experiências com os graduandos e com os demais estagiários docentes, monitores e professora orientadora e a busca de novas metodologias e ferramentas que auxiliassem o processo de ensino-aprendizagem.

RESUMEN Los alimentos ultraprocesados son productos industriales que contienen una composición nutricional desbalanceada, contribuyendo a un elevado de calorías, azúcares, grasas y sodio. El objetivo de este estudio fue evaluar el consumo de alimentos ultraprocesados de adolescentes, adultos y ancianos. En la ciudad de Teresina, Piauí, se entrevistó a adolescentes (10 a 19 años), adultos (20 a 59 años) y ancianos (≥60 años). Una encuesta recordatoria de 24 h se utilizó para evaluar el consumo de alimentos con una repetición posterior en el 40% de la muestra. Se utilizó el análisis de varianza (ANOVA) con la prueba post-hoc de Bonferroni para comparar los datos y se aceptó como significativo el valor de p<0.05. Se observó que los adolescentes que consumían una mayor cantidad de alimentos ultraprocesados (2º y 3º tercil) consumían significativamente menos cereales y legumbres. Entre los adultos, se observó que los terciles con mayor consumo de alimentos ultraprocesados tenían significativamente menor consumo de cereales, carne, frutas, verduras, legumbres y huevos. Entre los ancianos, en los terciles con mayor consumo de alimentos ultraprocesados, hubo un consumo significativamente menor de granos y carne. Se concluye que el mayor consumo de alimentos ultraprocesados contribuyó al menor consumo de alimentos no procesados o mínimamente procesados.

ABSTRACT Ultra-processed foods are industrial products that contain an unbalanced nutritional composition, contributing to a high intake of calories, sugars, fats and sodium. The aim of this study was to evaluate the consumption of ultra-processed foods among adolescents, adults and the elderly. In the city of Teresina, Piauí, adolescents (10 to 19 years old), adults (20 to 59 years old) and elderly persons (≥60 years old) were interviewed. The 24-hour food recall was used to assess food consumption with subsequent replication in 40% of the sample. Analysis of variance (ANOVA) with Bonferroni’s post-hoc test was used to verify the data, and the value of p<0.05 was adopted as significant. It was observed that adolescents who consumed a greater amount of ultra-processed foods (2nd and 3rd tertile) consumed significantly less grains and legumes. Among adults, it was observed that the tertiles with higher consumption of ultra-processed foods had significantly lower consumption of grains, meat, fruits, vegetables, legumes and eggs. Among the elderly, in the tertiles with higher consumption of ultra-processed foods, there was significantly lower consumption of grains and meat. We conclude that higher consumption of ultra-processed foods contributed to a lower consumption of unprocessed or minimally processed foods.

Abstract Lettuce is a vegetable most consumed and produced on a large scale in the world, it deserves special attention for its nutritional and functional value. Cultivated in the conventional, hydroponic and organic method, it presents different characteristics in production, which may influence the composition of this vegetable. It is indisputable that regular consumption of vegetables is beneficial due to the presence of bioactive compounds with antioxidant properties that protect and promote human health. In this study, the total phenolic compound, flavonoid, and tannin contents, as well as the antioxidant activities of lettuce samples from conventional, hydroponic, and conventional cultivars were analyzed. An extract was prepared using 80% acetone. The contents of total phenolic compounds, flavonoids, and tannins were determined. The antioxidant activity was determined by the radical capture method using DPPH. It was observed that the organic cultivation system had the highest values of ash, protein, total phenolic compounds, flavonoids and antioxidant activity, followed by the hydroponic system. The organic system presented greater protein content and higher content of bioactive compounds, justifying the high antioxidant activity. Therefore, the organic farming system favors the highest concentration in the content of bioactive compounds and antioxidant activity.

SUMMARY In this present study, we determined the chemical composition and we tested the toxicity and the molluscicidal activity of the essential oil extracted from the barks of Citrus sinensis (L.) Osbeck. For this, the essential oil was extracted quantitatively by hydrodistillation. Then, quantifications of its components were performed by gas chromatography coupled to mass spectrometry (CG-MS) and the toxicity and molluscicidal activity were tested, respectively, against Artemia salina and snails Biomphalaria glabrata. The results showed that the oil contains 81.50% of D-limonene (main constituent) and 0.06% of citronellal (minor component) and it has lethal activity (LC50) of 100.08 mg.L-1 and a toxicity, with LC50 of321.84 mg.L -1 at a 95% confidence level. Therefore, the oil is active against the snail Biomphalaria glabrata and non-toxic to other living bein.

RESUMO Determinamos a composição química e testamos a toxicidade e a atividade moluscicida do óleo essencial extraído das cascas do Citrus sinensis (L.) Osbeck. Para isso, o óleo essencial foi extraído quantitativamente por hidrodestilação. Em seguida, as quantificações de seus componentes foram realizadas por cromatografía gasosa acoplada à espectrometria de massas (CG-MS) e a toxicidade e atividade moluscicida foram testadas, respectivamente, contra Artemia salina e caramujos Biomphalaria glabrata. Os resultados mostraram que o óleo contém 81,50% de D-limoneno (constituinte principal) e 0,06% de citronelal (componente menor) e este possui atividade moluscicida com concentração letal (CL50) de 100,08 mg.L-1 e atoxicidade, com CL50 de 321,84 mg.L-1 a um nível de confiança de 95%. Portanto, o óleo é ativo contra o caramujo Biomphalariaglabrata e atóxico para outros seres vivos.

ABSTRACT Hepatitis B virus (HBV) infection is a serious global health problem. HBV has a high viral genetic diversity, with 10 genotypes recognized. In Brazil, the Roraima State is the third in the Northern region regarding the number of hepatitis B cases. On the other hand, few data on HBV genotyping and phylogenetic analysis are available. The purpose of this study is to characterize the HBV genotypes circulating in Roraima State. Of the 113 chronic hepatitis B patients enrolled in this study, 40 were HBV-DNA positive. A fragment of 280 bp (S gene) was amplified by PCR and submitted to nucleotide sequencing. A dataset containing the viral sequences obtained in this study, plus 130 obtained from GenBank was used for genotyping by phylogenetic analysis. The HBV subgenotype distribution found was A1 (62.5%), A2 (7.5%), D2, D3, D4 (2.5%), F2a (12.5%), and F3 (10%). We characterized the genotypes and subgenotypes of HBV circulating among patients in the State of Roraima. In addition, our study shows for the first time the HBV/F3 genotype circulating in Brazil. In conclusion, our findings showed a high diversity of HBV genotypes in Roraima, which is also found in other Brazilian geographical regions.