2004
DOI: 10.1002/adv.20017
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Physical characterization of starch extrudates as a function of melting transitions and extrusion conditions

Abstract: ABSTRACT:The objective of this study was to investigate the relationships between starch melt transition characteristics, extrusion conditions, and final product properties. Cornstarch was extruded using a corotating twin-screw extruder at varying moisture content, medium/high screw configuration, and 300/400-rpm screw speeds. Extrudates were evaluated for bulk density, expansion ratio, cell structure, bending strength, thermal and pasting properties. Temperature change ( T) was defined as the temperature diff… Show more

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Cited by 41 publications
(26 citation statements)
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References 27 publications
(22 reference statements)
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“…The granules size varied among the starches, ranging from 13.3 to 21.4 µm (Table 1). These results are within the range reported for corn starches (2 to 37 µm) (Agama-Acevedo et al, 2005;Blanche & Sun, 2004;Tester et al, 2004). The size and shape of corn starch granules depend mainly on variety.…”
Section: Granule Size and Light Microscopysupporting
confidence: 90%
See 1 more Smart Citation
“…The granules size varied among the starches, ranging from 13.3 to 21.4 µm (Table 1). These results are within the range reported for corn starches (2 to 37 µm) (Agama-Acevedo et al, 2005;Blanche & Sun, 2004;Tester et al, 2004). The size and shape of corn starch granules depend mainly on variety.…”
Section: Granule Size and Light Microscopysupporting
confidence: 90%
“…However, the composition of corn can be modified by plant breeding methods, to be used as food source and in the wet-milling and ethanol industries (Acton, 2013;Cauvain & Young, 2009;Eckhoff & Watson, 2009). On general, the proximate composition found in this study is similar to that reported for other corn starches (Ash = 0.1%, Fat = 0.2 to 0.5%, Protein = 1.1 to 2.0%, Moisture = 6.5 to 8.5%) (Blanche & Sun, 2004;Tovar-Benítez, 2008). Likewise, it has been reported that low fat and protein contents indicate high purity of isolated starches (Tirado-Gallegos et al, 2016).…”
Section: Yield and Proximate Composition Of Isolated Starchessupporting
confidence: 78%
“…Therefore, many of the cells collapsed, limiting the radial expansion. Similar fi ndings were echoed by Blanche and Sun, 27 who observed that the expansion of extrudates significantly increased as the moisture content of corn starch was decreased from 30 to 24%. They suggested that starch molecules, at higher moisture contents, become disentangled and more aligned, producing lower viscosities.…”
Section: Expansion Ratiosupporting
confidence: 76%
“…Starch has been used as an important raw material in biodegradable plastics. Its gelatinization process has attracted much attention, because it represents an important and unique characteristic in the processing of starch‐based materials . Also, its use as one of the raw materials for manufacturing sustainable and biodegradable “green” plastic products is of great interest .…”
Section: Introductionmentioning
confidence: 99%