Title
Thermal behaviour of wheat starch and flour at different water levels: Effect of pectins, modified celluloses and NaCl
Date Issued
01 March 2015
Access level
open access
Resource Type
journal article
Author(s)
Universidad Nacional de La Plata
Publisher(s)
Wiley-VCH Verlag
Abstract
Rapidviscoanalyser(RVA) anddifferential scanning calorimetry (DSC)canbe applied to study thermal transitions in starch based systems at different water levels. The effect of different hydrocolloids on wheat starch thermal transitions in the presence and absence of NaCl (2%) was evaluated in flour-hydrocolloid suspensions, starch-hydrocolloid mixtures and dough. These hydrocolloids include microcrystalline cellulose (MCC), carboxymethyl cellulose (CMC), two types of hydroxypropylmethylcellulose (HPMCF4Mand F50), a lowmethoxyl pectin (LMP)and a high methoxyl pectin (HMP). The suspensions were submitted to a heating/cooling cycle in anRVAand aDSCwas used to evaluate gelatinization and ALC transition in dough and mixtures. All of the suspensions containing NaCl exhibited higher hot paste stability. Furthermore, CMC and pectins showed an inhibitory effect on amylose retrogradation. Results also showed that starch thermal transitions in limited and excess water can be highly affected by hydrocolloids, particularly when NaCl is present.
Start page
338
End page
347
Volume
67
Issue
April 3
Language
English
OCDE Knowledge area
Química Alimentos y bebidas
Scopus EID
2-s2.0-84923102792
Source
Starch/Staerke
ISSN of the container
00389056
Sources of information: Directorio de Producción Científica Scopus