TY - JOUR
T1 - Comparison of crumb microstructure from pound cakes baked in a microwave or conventional oven
AU - Sánchez-Pardo, María Elena
AU - Ortiz-Moreno, Alicia
AU - Mora-Escobedo, Rosalva
AU - Chanona-Pérez, José Jorge
AU - Necoechea-Mondragón, Hugo
N1 - Funding Information:
This work was developed within the SIP 20050437 project, which was financed by the Secretaría de Investigación y Posgrado of the Instituto Politécnico Nacional (IPN) México.
PY - 2008/5
Y1 - 2008/5
N2 - Imaging, light microscopy and scanning electron microscopy were used to compare the microstructure of crumbs from pound cakes baked in a microwave or conventional oven. The microwave baking conditions for pound cake (240 W, 5 min) were established in previous research, conventional baked pound cakes were obtained using a swing oven at 180 °C for 40 min. Statistical differences in total cell, cell/cm2 and mean cell area (P≤0.05) were observed in the image analysis. Cells from microwaved pound cake crumbs were 20% larger. However, factor shape was 0.81 for both microwave and conventionally baked crumbs, and crumbs from both oven types were similar in appearance. Light microscopy revealed birefringence in crumbs from both types of pound cakes. Scanning electron microscopy revealed that the conventionally baked product had a greater amount of protein matrix however; the matrix structure of the crumb was comparable between microwave-baked and conventionally baked pound cakes. In conclusion, our results suggest that the unique aspects of pound cake dough, including its high content of fat, sugar and moisture, make it well suited to microwave baking.
AB - Imaging, light microscopy and scanning electron microscopy were used to compare the microstructure of crumbs from pound cakes baked in a microwave or conventional oven. The microwave baking conditions for pound cake (240 W, 5 min) were established in previous research, conventional baked pound cakes were obtained using a swing oven at 180 °C for 40 min. Statistical differences in total cell, cell/cm2 and mean cell area (P≤0.05) were observed in the image analysis. Cells from microwaved pound cake crumbs were 20% larger. However, factor shape was 0.81 for both microwave and conventionally baked crumbs, and crumbs from both oven types were similar in appearance. Light microscopy revealed birefringence in crumbs from both types of pound cakes. Scanning electron microscopy revealed that the conventionally baked product had a greater amount of protein matrix however; the matrix structure of the crumb was comparable between microwave-baked and conventionally baked pound cakes. In conclusion, our results suggest that the unique aspects of pound cake dough, including its high content of fat, sugar and moisture, make it well suited to microwave baking.
KW - Crumb
KW - Gelatinization
KW - Microstructure
KW - Microwaves
KW - Starch
UR - http://www.scopus.com/inward/record.url?scp=38049119813&partnerID=8YFLogxK
U2 - 10.1016/j.lwt.2007.05.003
DO - 10.1016/j.lwt.2007.05.003
M3 - Artículo
SN - 0023-6438
VL - 41
SP - 620
EP - 627
JO - LWT
JF - LWT
IS - 4
ER -