Abstract: Precooked and partially debranned corn flour is continuously produced by an enzymatic precooking using a commercial endoxylanase and endoamylase blend as a processing aid. The low-temperature and near neutral-pH precooking with an endoxylanase and endoamylase solution effects a partial hydrolysis of bran and starchy cell-walls with a controlled gelatinization and reduced conditioning and corn solid loss in wastewater. Moisture content is then stabilized after washing, followed by milling and drying at a high temperature for a short time to produce a partial gelatinization in the ground kernel, cooling and further drying the dried-milled particle.

Abstract: Corn masa dough texture and tortilla flexibility are improved by adding to the nixtamalized corn flour, an enzyme blend comprising commercial hemicellulase and/or cellulase. The enzyme preparation has a positive effect on dough texture and improvement in tortilla elasticity and ductility during commercial storage. The combination of the enzyme blend and the method for dough and tortilla preparation can enhance conventional additives to delay corn tortilla hardening during storage.

Abstract: Precooked and partially debranned corn flour is continuously produced by an enzymatic precooking using a commercial endoxylanase and endoamylase blend as a processing aid. The low-temperature and near neutral-pH precooking with an endoxylanase and endoamylase solution effects a partial hydrolysis of bran and starchy cell-walls with a controlled gelatinization and reduced conditioning and corn solid loss in wastewater. Moisture content is then stabilized after washing, followed by milling and drying at a high temperature for a short time to produce a partial gelatinization in the ground kernel, cooling and further drying the dried-milled particle.

Abstract: Precooked and partially-debranned corn flour is continuously produced by an enzymatic precooking using a commercial xylanase as a processing aid. The low-temperature and near neutral-pH precooking with a xylanase effected a partial bran hydrolysis while avoiding excessive pregelatinization, reduced washing, and corn solid loss in wastewater. Moisture content is then stabilized, followed by milling and drying at a high-temperature and short-time to produce a controlled gelatinization in the ground kernel, cooling and further drying the dried-ground particle. A fine particle size or flour is separated and recovered from the coarser particle which is also segregated to partially isolate a bran fraction for animal feed or integral flour, remilling and sieving the coarser particle to produce an instant corn flour for arepa, and admixing the fine particle with lime to obtain a masa flour for tortilla and other snack foods.

Abstract: A process and apparatus improvement for energy and particulate recovery during the production of nixtamalized corn flour, by precooking with a lime solution to effect partial cooking, reduced energy use for pre-cooking and washing by recycling hot water. Next, moisture content is stabilized, and the corn is milled and dried in a super-heated stream of air with reduced energy consumption by recycling waste hot air. Dust trapping is performed on a portion of waste hot air which is reused for preheating combustion air. Wet scrubbing of the remaining waste hot air is performed where heated water is reused and exhaust air vented. Cooling and further drying of the dried-milled particles follows. A fine grind or flour is separated and recovered from the coarse grind which is also aspirated to isolate a hull fraction as corn waste along with particulate collected after entrapping and scrubbing waste hot air. Re-milling and sieving the coarse grind produces a corn flour for tortilla and the like.

Abstract: Tortilla dough is shaped and precooked by being inserted in a region between the arcuate outer surface of a heated rotatable drum and the arcuate surface of a heated compression plate. The plate is pivotally-mounted and swung into position parallel to the surface of the drum to compress the dough while the drum is in a stop-phase of step motion. Thereafter, the plate is swung out of position and the drum is then rotated to cause the compressed dough to pass under the pivotally fixed end of the plate and out of said region.

Abstract: This invention relates to food processing apparatus, and in one embodiment includes collating apparatus for synchronizing the position of the leading edge of irregularly shaped, supple objects, such as tortillas, and apparatus for removing such objects individually from the synchronizing apparatus by grasping them by their front edges and transporting them to an associated stacking apparatus.