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Enzymatic pretreatment for preparing starch nanocrystals.
- Source :
-
Biomacromolecules [Biomacromolecules] 2012 Jan 09; Vol. 13 (1), pp. 132-7. Date of Electronic Publication: 2011 Dec 20. - Publication Year :
- 2012
-
Abstract
- Starch nanocrystals (SNCs) are crystalline platelets resulting from the acid hydrolysis of starch. A limiting factor for their more widespread use is their preparation duration. Therefore, this study investigates the possibility of developing an enzymatic pretreatment of starch to reduce the acid hydrolysis duration. A screening of three types of enzymes, namely, α-amylase, β-amylase, and glucoamylase, is proposed, and the latter was selected for a pretreatment. Compared with the regular kinetics of hydrolysis for preparing SNC, that of pretreated starch was much faster. The extent of hydrolysis normally reached in 24 h was obtained after only 6 h, and the regular final yield (15% after 5 days) was reached in 45 h. AFM and X-ray diffraction measurements confirmed that the obtained nanoparticles were indeed SNC.
- Subjects :
- Animals
Aspergillus niger enzymology
Fungal Proteins chemistry
Hordeum enzymology
Hydrolysis
Nanoparticles ultrastructure
Pancreas enzymology
Particle Size
Plant Proteins chemistry
Starch ultrastructure
Swine
Time Factors
Zea mays chemistry
Glucan 1,4-alpha-Glucosidase chemistry
Nanoparticles chemistry
Starch chemistry
alpha-Amylases chemistry
beta-Amylase chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1526-4602
- Volume :
- 13
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Biomacromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 22133316
- Full Text :
- https://doi.org/10.1021/bm201333k