DSpace Coleção: Artigo em periódico indexado (CPPSE)

Development and characterization of edible films from onion and garlic purees via continuous casting for scalable active food packaging.

2026-01-01T00:00:00Z

Título: Development and characterization of edible films from onion and garlic purees via continuous casting for scalable active food packaging. Autoria: MAURÍCIO, R. A.; OLIVEIRA FILHO, J. G. de; SANTOS, L. B. dos; ALENCAR, S. M. de; MAIA, R. A.; BRIENZO, M.; ALONSO, J. D.; NASSU, R. T.; AZEREDO, H. M. C. de Conteúdo: Edible films based on Allium purees, such as onion (Allium cepa L.) and garlic (Allium sativum L.), are a promising alternative for food packaging due to their high levels of polysaccharides, bioactive compounds, and intrinsic flavor, which enhance the sensory and functional properties of packaged foods. However, large-scale production is essential for these packaging materials to reach the final consumer. In this study, film-based purees were developed from hydrothermally pretreated onion and garlic, with or without carboxymethylcellulose (CMC), using both continuous casting and laboratory-scale bench casting methods. The properties of films produced by continuous casting were compared to those obtained by bench casting. Films containing CMC exhibited a more cohesive structure and improved mechanical performance (Tensile Strength (TS) increased by approximately 79%), higher contact angles (increased by approximately 112%), while water vapor permeability (WVP) and water solubility decreased by approximately 27% and 8.5%, respectively (p < 0.05 for all parameters), indicating better barrier properties. CMC also increased thermal stability, while the heat sealability of the films was unaffected by the production method. All films demonstrated strong antioxidant activity, regardless of their production method. These findings highlight the potential of CMC-enriched Allium-based edible films for packaging fatty foods prone to lipid oxidation. Hydrothermal pretreatment of whole Allium purees enhanced antioxidant properties, resulting in films with high antioxidant activity. Furthermore, the successful application of continuous casting demonstrates the feasibility of scaling up production, supporting the development of commercially viable bio-based packaging solutions.

Infrared thermography and Doppler ultrasonography reveal divergent scrotal thermoregulation strategies in Nelore and composite (5/8 Charolais × 3/8 Bos indicus) beef bulls.

2026-01-01T00:00:00Z

Título: Infrared thermography and Doppler ultrasonography reveal divergent scrotal thermoregulation strategies in Nelore and composite (5/8 Charolais × 3/8 Bos indicus) beef bulls. Autoria: RAMOS, G. G.; ARRUDA, R. P. de; AZEVEDO, G. N.; GONÇALVES, J. D.; BERNARDI, A. C. de C.; PEDROSO, A. de F.; PINHO, L. F.; SOUSA, A. J. C. de; FELTRIN, I. R.; GARCIA, A. R. Conteúdo: The present study aims to compare the testicular development and the capacity to maintain homeothermy and scrotal thermoregulation of young Nelore and Canchim (5/8 Charolais × 3/8 Bos indicus) bulls raised in the tropics, using infrared thermography and color Doppler ultrasonography. Forty-eight young bulls (24 Nelore and 24 Canchim) were raised using an intensive rotational grazing system (Urochloa brizantha, cv. BRS Piatã). The bulls had free access to shade and rotated between paddocks every seven days, with the pastures resting for thirty-five days. Over 12 consecutive months, the bulls were evaluated using calipers, clinical thermometers, infrared thermography, and color Doppler ultrasonography. Data were analyzed for the main effect of breed (Nelore and Canchim) and animal age (8 to 19 months), and the possible breed × age interaction. Nelore demonstrated greater (P < 0.05) competence in maintaining systemic homeothermy than Canchim. The epididymal tail temperature was higher (P < 0.05) in Nelore bulls (32.8 ± 0.1 °C) compared to Canchim (32.0 ± 0.1 °C). At the end of the experiment, Nelore bulls showed a smaller (P < 0.05) color Doppler area in the pampiniform plexus (1173.3 ± 106.1 mm2) compared to Canchim (1763.7 ± 138.1 mm2). Our study used a combination of infrared thermography and color Doppler ultrasonography to assess scrotal temperature and hemodynamics. This approach could contribute to the development of initial reference parameters, which are an important tool for understanding adaptability issues.

Effect of founder breeds on genotype imputation accuracy in Canchim cattle.

2026-01-01T00:00:00Z

Título: Effect of founder breeds on genotype imputation accuracy in Canchim cattle. Autoria: SILVA, R. T. da; GENUÍNO, M. V. H.; BESSA, A. F. O.; CÂMARA, G. M. S.; OLIVEIRA, A. C. J.; SILVA, J. A. II V.; MOTA, L. F. M.; REY, F. S. B.; REGITANO, L. C. de A.; MARCONDES, C. R.; BERNARDES, P. A.; BERRY, D. P.; MUNARI, D. P.; BUZANSKAS, M. E. Conteúdo: Genotype imputation is a technique used to infer unobserved genotypes based on reference panels, allowing increased marker density and cost-effective optimization for genomic selection. This study aimed to evaluate whether the inclusion of genotypes from the founder breeds Nelore (NE) and Charolais (CH) improves the imputation accuracy in the composite beef cattle breed Canchim (CA). The populations studied consisted of 804 NE, 897 CH, and 392 CA animals, all genotyped using high-density panels (777,962 SNP – single nucleotide polymorphisms). CA animals had their genotypes masked to simulate a medium-density panel (54,609 SNP). Fourteen imputation scenarios were evaluated, varying according to breed, sex, year of birth, and lineage. Imputation accuracy was determined based on the percentage of correctly imputed genotypes (PERC) and the squared Pearson’s correlation between observed and imputed genotypes (R2). PERC values ranged from 66.52% to 97.39% and R² from 0.6352 to 0.9780. The scenarios that included NE, CH, and CA (males or animals born before 2004) as the reference population for imputing CA females or CA animals born after 2004 showed the highest imputation accuracies. Therefore, the use of founder breeds in the reference population improves the accuracy of genotype imputation in CA cattle. The results indicate that a multibreed reference population, incorporating founder breeds, could provide a more robust and informative genetic basis for imputing composite cattle.

Intake, digestibility and rumen fermentation in Nellore bulls grazing degraded or recovered pastures of Urochloa ssp. or the grass intercropped with pigeon pea.

2026-01-01T00:00:00Z

Título: Intake, digestibility and rumen fermentation in Nellore bulls grazing degraded or recovered pastures of Urochloa ssp. or the grass intercropped with pigeon pea. Autoria: FURTADO, A. J.; ABDALLA FILHO, A. L.; PERNA JUNIOR, F.; PASQUINI NETO, R.; SILVA, G. V. da; LOBO, A. A. G.; COELHO, L. de M.; BRUNO, J. F.; BERNDT, A.; PEDROSO, A. de F.; MEDEIROS, S. R. de; OLIVEIRA, P. P. A.; RODRIGUES, P. H. M. Conteúdo: With global population growth, livestock production must be intensified with reduced environmental impact. The benefits of legume-grass intercropping are well-documented; however, no studies have evaluated ruminal fermentation and digestive kinetics. Pigeon pea, a legume intercropped with tropical grasses, can improve the nutritional value of forage, increasing digestive efficiency and mitigating methane emissions, while also reducing the need for nitrogen fertilization. Over two years, nine rumen-cannulated Nellore bulls were allocated to nine experimental paddocks (1.25 ha each; total area of 11.25 ha) in a randomized complete block design, with year as the blocking factor. Treatments followed a 3 × 2 factorial arrangement, consisting of three forage systems and two seasons (dry and rainy), with three paddock replicates per treatment: DEG, a degraded pasture; REC, recovered pasture fertilized with 200 kg of N; and MIX, mixture of legume-grass pasture. External and internal markers were used to determine dry matter intake (DMI). Grass and legume intake proportions were estimated using C3 and C4 carbon isotopes. The concentration and production of short-chain fatty acids, methane, and ammonia compounds were calculated using the ex-situ fermentation technique. Animals in DEG pasture presented a higher DMI of the supplement and higher relative energy loss as methane production, while a higher level of DM digestibility was observed in the MIX pasture. Higher ruminal concentrations of NH3-N were obtained for animals in the REC pasture. The lowest ruminal DM and NDF degradation rates were observed in the MIX pasture.