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- Title
ESTUDIO DEL PROCESO DE PRODUCCIÓN EN CONTINUO DE HIDROLIZADOS DE ALMIDÓN DE YUCA INTEGRANDO HIDRÓLISIS ENZIMÁTICA Y CLARIFICACIÓN CON MEMBRANAS.
- Authors
DÍAZ-ARENAS, Gloria Lizeth; RAMOS-GONZÁLEZ, Dietmar José; MUVDI-NOVA, Carlos Jesús
- Abstract
Glucose syrups obtained from cassava starch have been studied due to the high content of starch that their raw material presents (87.67% dry base). The production process is performed conventionally in batch reactors using enzymes (in two steps). Subsequently, the hydrolysates produced are clarified to remove suspended solids and insoluble impurities; this configuration increases production costs and productivity. Objectives: Continuous production process of cassava starch hydrolysates integrating enzymatic hydrolysis (one-step) and clarification with membrane technology was studied. Methods: Tubular monochannel ceramic membranes InsideCeram® from TAMI Industries were used: molecular weight cut-off: 50 kDa and 0.2 μm, and lengths of 1.2 m (surface area of 0.132 m2) and 0.14 m (surface area of 0.00307 m2 ). It was analyzed the effect of enzyme concentration (α-amylase: 0.028-0.112 % w/w; glucoamylase: 0.0315- 0.126% w/w) on hydrolysates produced by one-step starch hydrolysis. Besides, it was evaluated the effect of molecular weight cut-off on hydrolysates production during steps of liquefaction and saccharification under continuous configuration. Fluxes were determinated and all hydrolysates and their permeates were characterized in turbidity, DE, % glucose, % dry matter and °Brix. Results: The results showed that hydrolysates characteristics were not significantly affected by the evaluated enzyme concentrations (mixtures), allowing to work with the lowest concentrations (reducing times of operation and costs of production). On the other hand, the results for continuous process configuration showed that it is possible to work with a membrane of 0.2 μm without affecting permeate quality and increasing the productivity. Conclusions: Finally, the advantages of using a continuous configuration instead a batch configuration were found: longer times of operation, permeates of high quality and an increase of productivity.
- Publication
Vitae (01214004), 2017, Vol 24, p25
- ISSN
0121-4004
- Publication type
Article
- DOI
10.17533/udea.vitae.v24n2(2)a04