INVESTIGADORES
MAZZA German Delfor
artículos
Título:
Exergy, energy, and sustainability assessments applied to RSM optimization of integrated convective air-drying with pretreatments to improve the nutritional quality of pumpkin seeds.
Autor/es:
DANIELA ZALAZAR GARCÌA; MARÍA CELIA ROMÁN; ANABEL FERNANDEZ BRIZUELA; DANIELA ASENSIO; XIN ZHANG; MARÍA PAULA FABANI; ROSA ANA RODRIGUEZ; GERMÁN D. MAZZA
Revista:
Sustainable Energy Technologies and Assessments
Editorial:
ELSEVIER B. V.
Referencias:
Lugar: Amsterdam; Año: 2022 vol. 49 p. 1 - 12
ISSN:
2213-1388
Resumen:
Pumpkin seeds are generally discarded but they are a source of protein, fibers, and other nutrients. This paper aimed to define the drying conditions for obtaining the optimal effective diffusivity by applying the ResponseSurface Method and Box-Behnken design (BBD) and random search also focused on energetic,exergetic, and environmental assessments. Pumpkin seeds were subjected topretreatments by immersion in NaCl solutions at 0, 2, 7, and 14 % (w/w), andblanching at 373 K during 0, 2, 7, 12, and 14 min. The pretreated samplespresented shorter drying times than the non-pretreated ones at all temperaturesstudied. The optimal conditions are 356.8 K, 12.65 % NaCl, and 0.5 min. The lipid and proteincontents did not show significant variations at the optimal conditions concerningfresh pumpkin seeds; however,the crude fiber contents decreased. The energetic and exergy efficiency of thedryer were 13.4 % and 41.77 %, respectively. The Improvement Potential  and Sustainability Index  values are associated with the losses of exergy. The CO2 emissions during the global process were 0.165 kg/kg of freshseeds, and their values were related to the specific energy consumption.