TY - JOUR
T1 - Production of fiber-rich powder by the acid treatment of unripe banana flour
AU - Aguirre-Cruz, A.
AU - Álvarez-Castillo, A.
AU - Yee-Madeira, H.
AU - Bello-Pérez, L. A.
PY - 2008/7/5
Y1 - 2008/7/5
N2 - The acid treatment of unripe banana flour (UBF) was carried out to obtain a fiber-rich product, and some functional and physicochemical characteristics were tested. An experimental design with temperature, time, and acid concentration as independent variables produced 20 experiments that were studied with a response surface methodology to discover the effect of these variables on the total dietary fiber (TDF) content. UBF showed a TDF content of 17% and a total starch content of 73%. The response surface regression model fitted to experimental results of TDF showed a good determination coefficient (94%). The maximum TDF content that predicted the model was 61.0% with conditions of 38°C, 11 days, and an acid concentration of 1.6M. During model validation for TDF, the model explained the experimental results to 99.5%. The thermal characterization of the fiber-rich products after the acid treatment [acid-treated unripe banana flour (ATUBF)] showed higher thermal stability than its parental sample. The water absorption index of ATUBF was lower but the water solubility of ATUBF was higher than its native counterpart. The preparation of a fiber-rich product with UBF may be important for the development of food and medical products.
AB - The acid treatment of unripe banana flour (UBF) was carried out to obtain a fiber-rich product, and some functional and physicochemical characteristics were tested. An experimental design with temperature, time, and acid concentration as independent variables produced 20 experiments that were studied with a response surface methodology to discover the effect of these variables on the total dietary fiber (TDF) content. UBF showed a TDF content of 17% and a total starch content of 73%. The response surface regression model fitted to experimental results of TDF showed a good determination coefficient (94%). The maximum TDF content that predicted the model was 61.0% with conditions of 38°C, 11 days, and an acid concentration of 1.6M. During model validation for TDF, the model explained the experimental results to 99.5%. The thermal characterization of the fiber-rich products after the acid treatment [acid-treated unripe banana flour (ATUBF)] showed higher thermal stability than its parental sample. The water absorption index of ATUBF was lower but the water solubility of ATUBF was higher than its native counterpart. The preparation of a fiber-rich product with UBF may be important for the development of food and medical products.
KW - Biological applications of polymers
KW - Biomaterials
KW - Biopolymers
KW - Differential scanning calorimetry (DSC)
KW - Thermal properties
UR - http://www.scopus.com/inward/record.url?scp=55849150591&partnerID=8YFLogxK
U2 - 10.1002/app.28095
DO - 10.1002/app.28095
M3 - Artículo
SN - 0021-8995
VL - 109
SP - 382
EP - 387
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 1
ER -