Monitoring the Capillary Jet Breakage by Vibration Using a Fast-Video Camera

Autor(es)

Chalella Mazzocato, Marcella ^{[1, 2]} ; Chevallier, Sylvie ^[1] ; Favaro-Trindade, Carmen S. ^[2] ; Poncelet, Denis ^[1]

Afiliação do(s) autor(es)

^[1] Agroalimentaire & LAlimentat Nantes Atlant ONIRIS, Ecole Nationale Veterinaire, Rue Geraudiere, F-44322 Nantes - France

^[2] Univ Sao Paulo, Fac Zootecnia Engn Alimentos FZEA, 225 Jardim Elite, BR-13635900 Pirassununga - Brazil

• Tipo de documento: Artigo Científico
• Fonte: APPLIED SCIENCES-BASEL; v. 11, n. 21 NOV 2021.
• Citações Web of Science: 0

Resumo

The production of beads by simple extrusion dropwise of an alginate solution in a calcium bath is a simple method. It may be done at room temperature without any toxic compound. However, simple extrusion drop by drop from a needle may result in large capsules and a low flow rate. The solution must be extruded as a jet to get a smaller size and higher flow rate, which breaks into droplets either by vibration or a cutting tool. The present contribution reports jet breakage observations into droplets under vibration by extruding an alginate solution varying some parameters during the study. The droplet formation was observed using a high-speed camera, and images were analyzed. The size, length before breakage, and droplet velocity were obtained by examining 50 droplets, and experiments were repeated three times. The high-speed camera allowed us to observe more precisely the capillary jet breakage. The study showed the importance of selecting a well-designed vibrating system, presented data while varying nozzle size, frequency, and flow rate to get optimum breakage keeping across all the same alginate solution. Further experiments would be interesting, modify the extruded solution concentration and composition, and find a precise criterion to identify optimum conditions.</p> (AU)

• Processo FAPESP: 16/16692-7 - Produção de microcápsulas de vitamina B12 utilizando co-extrusão seguida da desidratação por leito fluidizado
• Beneficiário: Marcella Chalella Mazzocato
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica
• Processo FAPESP: 15/19376-6 - Estudo das características físico-químicas e estabilidade de micropartículas lipídicas sólidas contendo vitamina B12 produzidas pela técnica de spray chilling
• Beneficiário: Marcella Chalella Mazzocato
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica