Effect of Temperature and Stirring Speed in Obtaining the Osmotic Dehydration of Jinger (Zingiber Officinale)

• Autores: Cañazaca Tito, Nancy, Carrillo Huamani, Judith, Coaquira-Quispe, Joel J., Pilco-Quesada, Silvia, Pilco Quesada, Silvia
• Formato: artículo
• Fecha de Publicación: 2022
• Institución: Universidad Nacional del Altiplano
• Repositorio: Revista de Investigaciones Altoandinas
• Lenguaje: español
• OAI Identifier: oai:ojs.pkp.sfu.ca:article/433
• Nivel de acceso: acceso abierto
• Materia: Osmotic dehydration, solids gain, temperature, stirring speed, ginger.; Deshidratación osmótica, ganancia de sólidos, velocidad de agitación, jengibre.

The objective of this research was to evaluate the effect of temperature and agitation speed on weight loss (WeL%), water loss (WaL%) and solids gain (SG%) in the osmotic dehydration of ginger cubes. (Zingiber officinale). The applied parameters were: osmotic solution temperature 26, 36, and 46°C, stirring speed of 30, 50 and 80 rpm, sample/osmotic solution ratio of 1:16 (p/p), sucrose concentration at 60% and experiment time 0, 15, 30, 45, 60, 75, 90, 105 and 120 min. The results showed that the temperature was the parameter that most influenced the WaL%, WeL%, and SG%, compared to the agitation speed it had a lower influence on the WaL%, WeL%, and SG%, this indicates that the high temperatures cause changes in the permeability of the cell membrane of the food, which generates greater transfer. The 26°C and 30 rpm treatment showed a higher diffusivity (De) with 5,20 x 10-4. The 46°C and 30 rpm treatment reported higher moisture losses with 35%, the 26°C and 30 rpm treatment presented an increased pH variation from 6.62 to 5.27, the 36°C and 50 rpm treatment showed a constant acidity of 0.05% and the treatment of 46°C and 80 rpm increase variation in soluble solids concentration to 35.16 °Brix. It was shown that temperature is the parameter that most influenced WaL%, WeL%, and SG%.