Carrera Ingeniería en Alimentos

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Author: search.filters.author.Agama Naranjo, Alejandra RosarioSubject: search.filters.subject.VIDA ÚTIL DE ALIMENTOS

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    Estudio de las condicones óptimas de almacenamiento de papilla para niños de 6 a 36 meses a base de harina de papa nativa (Solanum tuberosum ssp.), variedades Yema de Huevo y Santa Rosa con sabor a mora (Rubus glaucus) y taxo (Passiflora tripartita)
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería en Alimentos., 2018-01) Agama Naranjo, Alejandra Rosario; Robalino Martínez, Dolores del Rocío
    The influence of adverse environmental conditions are multiple and in the case of baby foods which are dehydrated composite foods should be minimized to the maximum. In the present work, water activity and moisture content at a constant temperature of 20 Celsius degrees more less 1 were correlated using the gravimetric method of saturated salt solutions to obtain an adsorption isotherm for the four formulations in which the variety of potato (Solanum tuberosum ssp.) Santa Rosa and Yema de Huevo and Andes berry pulp (Rubus glaucus) and softleaf (Passiflora tripartite) were varied. The experimental data were modeled using the BET and GAB equations obtaining sigmoid isotherms, type II for all treatments. The moisture values in the monolayer (wo) are in the range of 0,042 to 0,048 g water per g ms. The value of the heat-related constant of sorption in the monolayer (C) is in the range of 15,041 to 34,249. The value of the heat-related constant of the multi-layer sorption (K) is in the range of 0,93 to 1,02. The critical storage moisture values were 0,13 (g_(H_2 O) per g_(dry matter)) for the SRM and YHM formulations, 0,14 (g_(H_2 O)/g_(dry matter)) for YHT and 0,15 (g_(H_2 O)/g_(dry matter))SRT at a temperature of 20 Celsius degrees more less 1, while the optimum storage humidity is in the range of 0.040 to 0.042 (g_(H_2 O) per g_(dry matter)) corresponding to aw of 0,2 for the four formulations. The theoretical shelf life at determined conditions was higher than 365 days for all treatments, being superior for SRT and YHT formulations In addition, sample moisture, equilibrium moisture, water activity and granulometry were determined.