No abstract

The food industry is always looking for new strategies to extend the shelf life of food. In recent years, the focus has been on edible films and coatings. These play an essential role in the quality, safety, transport, storage, and display of a wide variety of fresh and processed foods and contribute to environmental sustainability. In this sense, this study aimed to carry out a bibliometric analysis and literature review on the production of whey-based films for application in food packaging. Whey-based films have different characteristics when compared to other biopolymers, such as antimicrobial and immunomodulatory capacity. A wide variety of compounds were found that can be incorporated into whey films, aiming to overcome their limitations related to high solubility and low mechanical properties. These compounds range from plasticizing agents, secondary biomacromolecules added to balance the polymer matrix (gelatin, starch, chitosan), and bioactive agents (essential oils, pigments extracted from plants, and other antimicrobial agents). The most cited foods as application matrix were meat (fish, chicken, ham, and beef), in addition to different types of cheese. Edible and biodegradable films have the potential to replace synthetic polymers, combining social, environmental, and economic aspects. The biggest challenge on a large scale is the stability of physical, chemical, and biological properties during application.

-Few studies have been carried out on aboveground (or belowground) and soil/substrate C accumulation in severely degraded areas, such as mined areas. The present study was developed in order to find a recovery strategy for a mined area and characterize its potential for C sequestration by planting two nitrogen-fixing Brazilian tree species (Mimosa caesalpiniifolia Benth and M. bimucronata (DC.) O. Kuntze). Sewage sludge was included in the experimental design. An experiment under randomized block condition and 2 x 5 factorial design with four replications were defined and carried out, in Rio de Janeiro State, Brazil. The treatments consisted of a combination of both tree species and five sewage sludge doses (0, 2.85; 5.70; ). M. caesalpiniifolia grows better (p<0.05) in reclaimed areas than M. bimucronata, even though neither the height nor the basal area of both species responded to the sludge application. Carbon stock in the tree trunks differ between species (27.3 and 14.3 Mg ha -1 , for M. caesalpinifolia and M. bimucronata, respectively), and was influenced by the doses of sewage sludge, whereas the soil carbon stock (0-10 cm) did not differ between species and doses (12.0 and 12.2 Mg ha -1 , for M. caesalpiniifolia and M. bimucronata, respectively). Soil fertility in the degraded site was found to be improved by legume trees six years after planting, with a small influence of the sewage sludge level. Mined areas recovered with legume trees can sequestrate significant amounts of C both in aboveground biomass and soil in a short period of time.Keywords: Soil carbon and nutrients accretion; Reclamation of soil; Aboveground biomass accumulation. (0, 2,85; 5,70; 11,40 e 22, ESTOQUE DE CARBONO EM ÁREAS DE MINERAÇÃO RECUPERADA COM LEGUMINOSAS ARBÓREAS E LODO RESUMO -Poucos estudos foram conduzidos em relação à acumulação de C na parte aérea (ou subterrânea) e solo/substrato em áreas severamente degradadas, como áreas mineradas. O presente estudo foi desenvolvido para encontrar uma estratégia de recuperação para uma área minerada e caracterizar o seu potencial de sequestro de C a partir do plantio de duas espécies de árvores brasileiras que fixam nitrogênio do ar (Mimosa caesalpiniifolia Benth e M. bimucronata (DC) O. Kuntze). Lodo de esgoto foi incluído no desenho experimental. Assim, um experimento em delineamento em blocos ao acaso e esquema fatorial 2 x 5 e quatro repetições foi instalado no estado do Rio de Janeiro, Brasil. Os tratamentos consistiram em uma combinação de duas espécies arbóreas e cinco doses de lodo de esgoto

No abstract

No abstract

Resumo: Este artigo é uma adaptação do trabalho de conclusão do curso de Jornalismo da Universidade Federal Rural do Rio de Janeiro, intitulado " Drag queens contra a verdade de gênero: paródia, performance e visibilidade afirmativa em mídias pós-massivas". Nesta pesquisa, discutimos os símbolos e estereótipos de gênero (re)produzidos em produtos midiáticos pós-massivos. Para isso, foi feita uma análise comunicacional à luz dos estudos de André Lemos, Muniz Sodré e da teoria queer . A fim de debater as representações drag queens , veremos como a corporalidade, performance e paródia de gênero das artistas brasileiras produzem uma confusão subversiva em relação às normas de sexualidade e feminilidade. O objetivo é discutir algumas das problemáticas do binarismo homem/mulher em um contexto de conservadorismo no país, ao passo em que a visibilidade da cultura drag queen e LGBTQIA+ avança como um lugar de inscrição de elementos simbólicos e culturais. Nesse sentido, serão trazidos os discursos autoritários sobre gênero em contrapartida aos produzidos pela própria categoria drag e público consumidor. Ao final do artigo, concluímos que as drag queens são sujeitos de uma personalidade queer , de uma sexualidade desviante, ao tensionar o que conceituamos como uma "verdade de gênero".Palavras-chave: Drag queens. Estereótipos. Símbolos. Paródia de gênero. Mídia pós-massiva.

The fishing industry is responsible for generating large amounts of organic waste rich in compounds of commercial interest. This review aimed to present the state of the art about the possibilities of using solid waste to obtain value‐added products. Skins, fins, and scales have been used to obtain gelatin and collagen, a promising compound for use as an additive in yogurts and creams, as well as for the synthesis of biodegradable packaging that, if applicable, can reduce the environmental impact caused by petroleum packaging. Other parts, such as the head and the viscera, contain polyunsaturated fatty acids and other fat‐soluble vitamins that have been studied for the production of omega‐3 capsules for the pharmaceutical industry, but when the extracted oil does not fit the feeding parameters, it can be applied for the production of biodiesel. Furthermore, fishes are a promising source of astaxanthin, a carotenoid with high antioxidant properties. The use of combined techniques such as chemical and enzymatic methods can increase the extraction yield and favor the obtaining of more purified compounds, in addition to promoting the reduction of chemicals that are aggressive to the environment. In general, conscious production in the fishing industry through the valorization of waste generated for use as inputs for other value chains encompasses aspects of the circular economy, which can positively impact several Sustainable Development Goals.

No abstract