Yellow or sour passion fruit is a climacteric fruit with a high rate of respiration and ethylene production, and postharvest technology is needed to extend its shelf life. This study investigated the properties of a biocomposite film with chitosan (CH) incorporated with beeswax (BW) and graphene oxide (GO) nanoparticles for use as an edible coating to extend the shelf life of yellow passion fruit at 22 °C and 70% RH for eight days. CH films associated with BW showed lower water vapor permeability (WVP) than films with CH alone. However, adding GO to the CH + BW biopolymer matrix improved the WVP, decreased the solubility (12.8%), and increased the opacity of the film by 9% compared to those of the CH film. Fruits coated with CH + BW or CH + BW + GO exhibited a reduction in respiration rate, a slower ripening process by approximately 3 days, and a significant decrease in weight loss. This also resulted in a higher soluble solids content and increased antioxidative capacity of the pulp. The incorporation of GO into the CH + BW matrix resulted in a more pronounced delay of fruit ripening, as evidenced by the lower depigmentation of the peel at eight days, with a lightness approximately 10.7% lower at 54.92, a chroma value 16.5% lower at 49.33, a hue angle 7.2% higher at 92.56, a soluble solid (SS) content 16.7% higher at 11.32°Brix, and an acidity 31.9% higher at 4.18% compared to the control. Furthermore, the biopolymer packaging led to a higher consumer acceptance score for the fruit.

Salt stress results in physiological changes that inhibit plant growth and development. Ca-complex sources are used as a potential salt stress attenuator. This study was carried out with the aim of verifying the effects of Ca-complex sources in reducing the effects of saline water stress on the physiological aspects of sour passion fruit seedlings. The experiment was carried out in a randomized block design with a 2 × 2 × 3 factorial scheme, consisting of two cultivars of sour passion fruit (BRS GA1 and BRS SC1), two levels of water salinity (electrical conductivity of 0.5 and 4.0 dS m⁻¹) and three sources of Ca-complex (without, organic acids and amino acids). The traits measured at 60 days after sowing were gas exchange, chlorophyll indices, chlorophyll fluorescence, electrolyte leakage, and relative water content in the leaf limb. Under moderate water salinity, the application of Ca-complex in amino acids promoted increases of 49.84% and 43.71%, respectively, in the efficiency of water use and carboxylation. The application of complex sources increased the stability of cell membranes, reducing electrolyte leakage, providing higher relative water content in seedlings irrigated with moderately saline water. From the results, we conclude that Ca-complex sources have potential as modulators of moderately saline water stress in sour passion fruit seedlings.

O objeto da proposta foi avaliar a saúde do solo através da Cromatografia do solo de Pfeiffer de quatro subsistemas agrícolas inseridos em um agroecossistema em transição agroecológica. A pesquisa foi realizada no município de Serraria-PB no agroecossistema Cajazeiras em uma unidade de base familiar em transição agroecológica. Para a análise da CSP, foram utilizadas categorias qualitativas observando suas zonas, cores e formas, expressas através de semáforos com cores distintas e legendas. A análise dos cromatogramas dos diferentes subsistemas avaliados apontou variâncias entre as unidades avaliadas. O agroecossistema apresentou desejáveis condições de boa saúde e qualidade do solo pelo método CSP. Os subsistemas obtiveram boa saúde do solo com semáforos azuis no geral. Somente a floresta foi classificada como categoria excelente, na qual obteve semáforos verdes. Conclui-se que a Cromatografia de Pfeiffer é uma técnica que pode ser utilizada para avaliação qualitativa do solo tanto de ecossistemas naturais quanto agroecossistemas, sendo de simples manuseio técnico e baixo custo, mostrando-se como uma alternativa à avaliação e monitoramento de solos por agricultores e para o avanço da transição agroecológica.

Sugar apples are climacteric fruits that had a rapid deterioration due to their high respiration rate and ethylene production, making the application of postharvest technologies essential for extending their shelf life. The objective of this study was to develop an edible coating using carrageenan (CR), beeswax nanoparticle (BW) and titanium dioxide (TD) to extend the shelf life of sugar apples, using ultraviolet (UV) light, to maintain their shelf life at 15 ± 1 °C and 80 ± 1% RH for 12 days. The addition of BW and TD in CR films allowed us to obtain good barrier properties in different concentrations. Based on the results obtained for the water vapor permeability (WVP) value, a concentration of 1.52% of TD and 27.3% of BW was chosen. Coated sugar apples with 1.52% of TD irradiated with UV light managing to delay respiration until day 5 and maintain physical-chemical qualities and visual appearance for nine days, concluding that the edible coating of CR and TD, in the presence of UV light, can extend the shelf life of sugar apples for nine days at 15 ± 1 °C and 80 ± 1% RH.

A implantação de estratégias sustentáveis na gestão dos resíduos sólidos (GRS) é um desafio constante para os gestores públicos do Brasil. A Política Nacional de Resíduos Sólidos (PNRS), foi aprovada em 02 de agosto de 2010 e é considerada o principal instrumento norteador para GRS em todo território nacional. Os dados elaborados por meio dos estudos bibliométricos mensuram a contri­buição do conhecimento científico derivado das publicações em determinadas áreas. Os indicadores de produção são úteis para o planejamento e a execução de políticas públicas, e para o conhecimento da comunidade científica. Diante disso, o objetivo deste trabalho é realizar um estudo bibliométrico sobre a produção científica brasileira referente GRS a partir da análise de publicações em periódicos indexados na base de dados do Web of Science (WoS). Os dados foram coletados utilizando operadores booleanos ("solid waste" or "solid waste management"). São analisadas 1.690 publicações distribuídas em 10 áreas de conhecimento, entre 2010 e 2021. Entre artigos analisados foi observado uma evolução expressiva da produção científica brasileira sobre essa temática nos últimos anos, com forte contribuição da Universidade de São Paulo (USP). A implementação da PNRS somada as pressões de órgãos internacionais, as reações do meio ambiente e suas consequências econômicas e na vida das populações urbanas, contribuíram significativamente para a evolução nas pesquisas sobre a GRS.

The yellow passion fruit is a key crop in irrigated areas of Northeast Brazil, but production is challenged by limited water availability and high salinity in groundwater used for irrigation. This study evaluated the effects of grafting Passiflora edulis f. flavicarpa Degener (E) onto P. foetida L. (F) rootstock to reduce the impact of saline stress. Conducted in a greenhouse using a 3 × 2 factorial design with four replications, the experiment tested three grafting combinations (F + F, E + E and E + F) under two salinity levels (0.5 and 6.0 dS m⁻¹). Key parameters measured included SPAD index, soluble protein content, hydrogen peroxide (H₂O₂) levels, catalase enzyme activity, plant height, and leaf number. Salinity significantly reduced plant height, especially at 6.0 dS m⁻¹. The E + E combination had the highest protein content in roots (23.8%). However, grafting P. edulis onto P. foetida (E + F) enhanced catalase activity and reduced H₂O₂ accumulation, indicating improved tolerance to salt stress. The findings suggest that using P. foetida as a rootstock may help mitigate oxidative damage and promote better physiological performance of yellow passion fruit under saline conditions, offering a strategy to sustain cultivation in stress-prone environments.