Effect of a novel monoglyceride stabilized oil in water emulsion shortening on cookie properties

This paper investigates the use of a novel monoglyceride stabilized oil in water emulsion as a shortening alternative in cookies. We report on the effects of the monoglyceride stabilized emulsion on cookie quality attributes when compared to formulations containing all purpose shortening. Furthermore, the role of structuring and its effects on the monoglyceride stabilized emulsion functionality in cookies were determined by comparing quality attributes of cookies containing the structured emulsion to those containing the unstructured components of the monoglyceride emulsion. Cookie quality attributes measured included dough firmness, cookie break strength, cookie spread, surface colour, and textural shelf life analysis. Water mobility of cookie dough was also determined using proton Nuclear Magnetic Resonance analysis. It was determined that the structured monoglyceride emulsion resulted in greater dough firmness, and decreased width and length values than doughs containing its unstructured components. However, cookies with all purpose shortening displayed superior quality attributes, as expected

Influence of amylopectin structure and degree of phosphorylation on the molecular composition of potato starch lintners

International audienceMorphology, molecular structure, and thermal properties of potato starch granules with low to high phosphate content were studied as an effect of mild acid hydrolysis (lintnerization) to 80% solubilization at two temperatures (25 and 45 degrees C). Light microscopy showed that the lintners contained apparently intact granules, which disintegrated into fragments upon dehydration. Transmission electron microscopy of rehydrated lintners revealed lacy networks of smaller subunits. The molecular composition of the lintners suggested that they largely consisted of remnants of crystalline lamellae. When lintnerization was performed at 45 degrees C, the lintners contained more of branched dextrins compared to 25 degrees C in both low and intermediate phosphate-containing samples. High-phosphate-containing starch was, however, unaffected by temperature and this was probably due to an altered amylopectin structure rather than the phosphate content. After lintnerization, the melting endotherms were broad with decreased onset and increased peak melting temperatures. The relative crystallinity was lower in lintners prepared at 45 degrees C. A hypothesis that combines the kinetics of lintnerization with the molecular and thermal characteristics of the lintners is presented. (c) 2013 Wiley Periodicals, Inc. Biopolymers 101: 257-271, 2014