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The Influence of Starch Modification with Amylosucrase Treatment on Morphological Features.
- Source :
- Processes; Nov2020, Vol. 8 Issue 11, p1409-1409, 1p
- Publication Year :
- 2020
-
Abstract
- Amylosucrase (AS) is a starch-modifying enzyme from Neisseria polysaccharea used to produce low-glycemic starches such as slowly digestible starch (SDS) and resistant starch (RS). The morphology of native, control, and AS-modified waxy corn starches (230 and 460 U) was examined using a particle size analyzer and field-emission scanning electron microscopy (FE-SEM). AS modification of the starch elongated the glucose and resulted in higher SDS and RS contents. The mean particle sizes of the control, 230 U-AS-, and 460 U-AS-treated starches were 56.6 µm, 128.0 µm, and 176.5 μm, respectively. The surface of the 460 U-AS-treated starch was entirely porous and coral-like, while the 230 U-AS-treated starch had a partial dense and flat surface which did not react with AS. FE-SEM of the granule cross section confirmed that the center contained a dense and flat region without any evidence of AS reaction to either of the AS-treated starches. It was assumed that the particle size and porous and sponge-like particle features might be related to the SDS and RS fractions. [ABSTRACT FROM AUTHOR]
- Subjects :
- CORNSTARCH
STARCH
SCANNING electron microscopy
PARTICLE size distribution
Subjects
Details
- Language :
- English
- ISSN :
- 22279717
- Volume :
- 8
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Processes
- Publication Type :
- Academic Journal
- Accession number :
- 147273354
- Full Text :
- https://doi.org/10.3390/pr8111409