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Geração Z e Cold Brew: análise das preferências e tendências de consumo
(Universidade Federal de Lavras, 2025-07-12) Sousa, Larissa Nunes de; Carneiro, João de Deus Sousa; Rodrigues, Jéssica Ferreira; Schmidt, Mariana Camargo; Fontan, Gabrielle Cardoso Reis
The coffee market in Brazil, the world's second-largest consumer, is undergoing a transformation driven by new consumption habits, especially among Generation Z. This demographic exhibits lower consumption of traditional coffee than other generations, creating a market gap and, simultaneously, an opportunity for innovative products. In this context, cold brew, a cold coffee-based beverage, emerges as a promising alternative. The objective of this work was to develop ready-to-drink (RTD) cold brew concepts, made with specialty coffees and targeted at Generation Z consumers. The research was conducted in three stages: (1) an analysis of the Brazilian cold brew market; (2) a qualitative investigation with focus groups to assess the opinions, preferences, knowledge, and reasons for consumption and non-consumption of cold coffee-based beverages (cold brew) by Generation Z; and (3) data consolidation for the creation of the concepts. The market analysis revealed a niche segment dominated by artisanal brands. The focus groups revealed that the positive perception of cold brew is centered on its smoothness and natural sweetness. The research identified that adding value to the product depends on attributes such as packaging choice (with an emphasis on glass) and the communication of health and sustainability. The analysis of this data allowed for the identification of two distinct consumer profiles, which served as the basis for proposing two ready-to-drink cold brew concepts: "RAÍZES," focused on the purity and origin of specialty coffee, and "BRISA," a refreshing beverage with added natural flavors. It is concluded that the success of cold brew for this audience is conditioned on a strategy that transcends flavor, encompassing values of health and sustainability, and that the creation of targeted concepts, as proposed, demonstrates a viable path for the industry to connect with Generation Z.
Caracterização anatomopatológica e imuno-histoquímica do sarcoma histiocítico em cães
(Universidade Federal de Lavras, 2025-09-29) Silva, Victor Procópio Rodrigues da; Wouters, Angelica Terezinha Barth; Wouters, Flademir; Casagrande, Renata Assis
Histiocytic Sarcoma (HS) is a rare and aggressive neoplasm derived from dendritic cell or macrophage lineages. This study aimed to perform the pathomorphological and immunohistochemical characterization of canine HS cases diagnosed at the Veterinary Pathology Sector of the Federal University of Lavras (SPV-UFLA) between 2014 and 2024. Demographic information, clinical data, and macroscopic and histopathological findings were reviewed. A total of 14 dogs were evaluated, showing an equal distribution between males (50%) and females (50%). Age ranged from 3 to 14 years (mean 8.85 years), with a higher concentration of cases in the 8 to 14-year age group (78.57%). Large-breed dogs were predominantly affected (85.71%). The most frequent racial category was mixed-breed dogs (42.86%), followed by Labrador Retrievers (21.43%). Other affected pure breeds included Bernese Mountain Dog, Boxer, Mastiff, German Shepherd, and Yorkshire Terrier (7.14% each). Regarding anatomical distribution, 100% of the cases were classified as disseminated HS. Macroscopically, the most affected organs were the skin (64.28%) and liver (50%), followed by the lungs, heart, spleen, and skeletal muscle (42.85% each). Lingual involvement occurred in four cases (28.57%), characterized by flat or exophytic and ulcerated nodules. Histologically, the neoplasms were characterized by the proliferation of round to pleomorphic cells with abundant cytoplasm, marked anisokaryosis, and multinucleated giant cells. Immunohistochemistry revealed positive immunostaining for IBA1 in 100% of the cases. Positivity for CD18 occurred in 50% of the cases, and for CD11d in 28.57%, suggestive of the hemophagocytic variant in these animals. There was no immunostaining for CD4 and Ecadherin. It is concluded that HS presented a pathomorphological pattern of high malignancy and an immunophenotypic profile compatible with histiocytic origin in the dogs of this study, predominantly characterized as a disseminated and multicentric disease.
Study on the influence of cellulose microfiber in o/w emulsions stabilized with tween 80, ethanol, and castor oil
(Universidade Federal de Lavras, 2025-09-29) Faria, João Enrique Mascarenhas de; Marconcini, José Manoel; Tonoli, Gustavo Henrique Denzin; Franzini, Cristina Maria; Conerro, Antonio Guerreiro; Mendes, Lourival Marin
Emulsions are thermodynamically unstable systems homogenized by emulsifiers, amphiphilic agents that interacts with both immiscible substances. In the industry field, these agents are commonly synthetics, causing risk to human health and environment. The cellulose microfibers (CMF) is an abundant material, versatile and low toxicity with emulsifying properties due to its capacity to form a 3d network and amphiphilic behavior. However, its versatility can be tricking when inserted into an emulsion due to its complex interactions with other materials. This work studied the influence of CMF, from a commercial brand, in an oil-in-water system compound with castor oil, tween 80, ethanol and water. The experiment was designed by factorial design, and the formulations were characterized by visual stability analysis, microstructure, diameter droplets, ionic demand and structural stability. Results have shown an ideal proportion of 25 % CMF dispersion to get stable macroemulsion for 7 days. Its presence preserved the droplets pattern formed by tween 80 and ethanol, making a macroemulsion, besides acting as a thickener that not only modifies, but also intensifies the viscoelastic behavior of the emulsion with the increase of quantity of CMF, from 0.25 % to 0.45 %. The ionic demand showed CMF as an anionic material and tween 80 and ethanol, as non-ionic. The stability was achieved due to the tridimensional CMF network formed by the interaction with the quantities of tween 80 and ethanol.
Convergência de conhecimentos para a conservação pesqueira: diálogos entre percepção local, monitoramento participativo e literatura científica a partir de dimensões biológicas de peixes amazônicos
(Universidade Federal de Lavras, 2025-09-26) Vale, Gabriela Spuri do; Hallwass, Gustavo; Pompeu, Paulo dos Santos; Passamani, Marcelo; Siqueira-Souza, Flávia Kelly
Fisheries management in the Amazon still faces major challenges due to the scarcity and fragmentation of biological data, underscoring the need to integrate diverse sources of information. Local Ecological Knowledge (LEK), built through fishers’ long-term observation and experience, provides valuable insights into population dynamics, behavior, and speciesspecific catch patterns. This study combined LEK, fish landing records, and biological parameters from the literature to evaluate the conservation status of small-scale fisheries in the middle Tapajós River (Pará). Capture size (CAP) estimates provided by experienced fishers (n = 27) were compared with landing records (n = 1441) and biological reference values (L₅₀ and TM), and a Capture Potential Index (IPC) was proposed. LEK showed high correspondence with empirical landing data and scientific references, supporting its reliability and usefulness in co-management contexts. Mean capture sizes ranged from 33 to 75 cm. Large catfishes, such as Dourada (Brachyplatystoma rousseauxii) and Filhote (B. filamentosum), were frequently captured below L₅₀, indicating growth overfishing, while smaller species were generally harvested near Lmax. IPC values were lowest for Pescada (42%), Filhote (45%), and Dourada (48%), intermediate for Pacus (50%), and highest for Tucunarés (60%), Aracu (72%), and Jaraqui (75%), suggesting a possible Fishing Down process. Overall, the findings highlight LEK as a realistic and valuable empirical data source to support participatory management practices, including the definition of minimum capture sizes, community-based monitoring, and the strengthening of fisheries co-management in the Amazon.
Avaliação do uso de resíduo de tubos de papel em compósitos de fibrocimento submetidos à carbonatação acelerada
(Universidade Federal de Lavras, 2025-08-28) Teixeira Junior, Walmir dos Santos; Martins, Maria Alice; Silva, Danillo Wisky; Cruz, Thiago Moreira; Mendonça, Maressa Carvalho; Oliveira, Barbara Maria Ribeiro Guimarães de
This study aims to development and characterization of fiber cement composites reinforced with vegetable fibers, with emphasis on the incorporation of industrial waste from recycled paper tubes, and evaluation of the effect of the accelerated carbonation process on the properties of the obtained fiber cement. The research was structured in a scientific article covering chemical and morphological analysis of the fibers, manufacturing and physical, mechanical, and microstructural characterization of the composites, as well as the evaluation of the effects of accelerated carbonation on the durability and mechanical performance of the materials. The results indicate that the combination of vegetable fibers and recycled residues can improve important properties of fiber cement, while promoting sustainable alternatives for the construction sector. This work contributes to technological and environmental advancements in the field of biomaterials, pointing to future research directions focused on optimizing processes and materials.