TY - JOUR
T1 - High oil content maize
T2 - Physical, thermal and rheological properties of grain, masa, and tortillas
AU - Vázquez-Carrillo, María Gricelda
AU - Santiago-Ramos, David
AU - Gaytán-Martínez, Marcela
AU - Morales-Sánchez, Eduardo
AU - Guerrero-Herrera, Manuel de Jesús
N1 - Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The objective of this study was to assess thermal, rheological and quality properties of grain, masa (ground nixtamalized corn), and tortillas made with high-oil maize hybrids and compare them with landraces. Grains of high-oil hybrids were harder (flotation index 10-36) with high onset, peak and final gelatinization temperatures, which were reflected in lower masa and tortilla yield. However, the tortillas had higher oil content (3.2-4.5g/100g) than those made with landraces (2.9-3.0 g/100g). Tortillas made with the yellow hybrids were softer (1.8 N). Pepitilla had the highest viscosity in grain, masa and tortillas, reflected in greater water absorption and masa and tortilla yield (1.61 kg/kg maize). A close relationship was found between G' and G″ and retained pericarp and oil content in masa; higher content of natural gums produced firmer masa with higher viscoelasticity. The high oil content in tortillas reduced their water absorption and starch swelling capacity but inhibited starch retrogradation, so they remained softer during storage.
AB - The objective of this study was to assess thermal, rheological and quality properties of grain, masa (ground nixtamalized corn), and tortillas made with high-oil maize hybrids and compare them with landraces. Grains of high-oil hybrids were harder (flotation index 10-36) with high onset, peak and final gelatinization temperatures, which were reflected in lower masa and tortilla yield. However, the tortillas had higher oil content (3.2-4.5g/100g) than those made with landraces (2.9-3.0 g/100g). Tortillas made with the yellow hybrids were softer (1.8 N). Pepitilla had the highest viscosity in grain, masa and tortillas, reflected in greater water absorption and masa and tortilla yield (1.61 kg/kg maize). A close relationship was found between G' and G″ and retained pericarp and oil content in masa; higher content of natural gums produced firmer masa with higher viscoelasticity. The high oil content in tortillas reduced their water absorption and starch swelling capacity but inhibited starch retrogradation, so they remained softer during storage.
KW - Grain quality
KW - High-oil maize
KW - Pasting properties
KW - Tortilla quality
UR - http://www.scopus.com/inward/record.url?scp=84922021061&partnerID=8YFLogxK
U2 - 10.1016/j.lwt.2014.07.043
DO - 10.1016/j.lwt.2014.07.043
M3 - Artículo
SN - 0023-6438
VL - 60
SP - 156
EP - 161
JO - LWT
JF - LWT
IS - 1
ER -