Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface

Karntarat Wuttisela; Wannapong Triampo; Darapond Triampo

doi:10.1016/j.ijbiomac.2008.10.005

Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface

Karntarat Wuttisela
, Wannapong Triampo
, Darapond Triampo

Mahidol University
Center of Excellence for Vectors and Vector-Borne Diseases
Center of Excellence for Innovation in Chemistry

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Surface chemical microstructure of hydrochloric acid hydrolyzed tapioca starch producing different amylose:amylopectin (Am:Ap) ratios were studied with scanning chemical force microscopy (CFM). The chemical force probes were functionalized of two types with -OH (phosphate specific) and -CH₃ (carbon specific). Lateral force trace-minus-retrace (TMR) images from -OH and -CH₃ probes revealed changes in the phosphate domains and the carbon backbone for the varying acid hydrolyzed tapioca starch compared to that of the native tapioca starch. Scanning electron micrographs (SEM) showed different degree of the granule surface disruption before and after hydrolysis. The exterior structures of the acid hydrolyzed starch granules were chemically investigated with CFM to study the relationships of the surface molecular structures and the Am:Ap ratios.

Original language	English
Pages (from-to)	86-91
Number of pages	6
Journal	International Journal of Biological Macromolecules
Volume	44
Issue number	1
DOIs	https://doi.org/10.1016/j.ijbiomac.2008.10.005
Publication status	Published - 1 Jan 2009
Externally published	Yes

Keywords

Acid hydrolysis
Amylopectin
Amylose
Carbon
Phosphate
Scanning chemical force microscopy (SCFM)

Access to Document

10.1016/j.ijbiomac.2008.10.005

Cite this

@article{770923cdfa144948b47e7095c4edff99,

title = "Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface",

abstract = "Surface chemical microstructure of hydrochloric acid hydrolyzed tapioca starch producing different amylose:amylopectin (Am:Ap) ratios were studied with scanning chemical force microscopy (CFM). The chemical force probes were functionalized of two types with -OH (phosphate specific) and -CH3 (carbon specific). Lateral force trace-minus-retrace (TMR) images from -OH and -CH3 probes revealed changes in the phosphate domains and the carbon backbone for the varying acid hydrolyzed tapioca starch compared to that of the native tapioca starch. Scanning electron micrographs (SEM) showed different degree of the granule surface disruption before and after hydrolysis. The exterior structures of the acid hydrolyzed starch granules were chemically investigated with CFM to study the relationships of the surface molecular structures and the Am:Ap ratios.",

keywords = "Acid hydrolysis, Amylopectin, Amylose, Carbon, Phosphate, Scanning chemical force microscopy (SCFM)",

author = "Karntarat Wuttisela and Wannapong Triampo and Darapond Triampo",

year = "2009",

month = jan,

day = "1",

doi = "10.1016/j.ijbiomac.2008.10.005",

language = "English",

volume = "44",

pages = "86--91",

journal = "International Journal of Biological Macromolecules",

issn = "0141-8130",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface

AU - Wuttisela, Karntarat

AU - Triampo, Wannapong

AU - Triampo, Darapond

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Surface chemical microstructure of hydrochloric acid hydrolyzed tapioca starch producing different amylose:amylopectin (Am:Ap) ratios were studied with scanning chemical force microscopy (CFM). The chemical force probes were functionalized of two types with -OH (phosphate specific) and -CH3 (carbon specific). Lateral force trace-minus-retrace (TMR) images from -OH and -CH3 probes revealed changes in the phosphate domains and the carbon backbone for the varying acid hydrolyzed tapioca starch compared to that of the native tapioca starch. Scanning electron micrographs (SEM) showed different degree of the granule surface disruption before and after hydrolysis. The exterior structures of the acid hydrolyzed starch granules were chemically investigated with CFM to study the relationships of the surface molecular structures and the Am:Ap ratios.

AB - Surface chemical microstructure of hydrochloric acid hydrolyzed tapioca starch producing different amylose:amylopectin (Am:Ap) ratios were studied with scanning chemical force microscopy (CFM). The chemical force probes were functionalized of two types with -OH (phosphate specific) and -CH3 (carbon specific). Lateral force trace-minus-retrace (TMR) images from -OH and -CH3 probes revealed changes in the phosphate domains and the carbon backbone for the varying acid hydrolyzed tapioca starch compared to that of the native tapioca starch. Scanning electron micrographs (SEM) showed different degree of the granule surface disruption before and after hydrolysis. The exterior structures of the acid hydrolyzed starch granules were chemically investigated with CFM to study the relationships of the surface molecular structures and the Am:Ap ratios.

KW - Acid hydrolysis

KW - Amylopectin

KW - Amylose

KW - Carbon

KW - Phosphate

KW - Scanning chemical force microscopy (SCFM)

UR - https://www.scopus.com/pages/publications/57849100670

U2 - 10.1016/j.ijbiomac.2008.10.005

DO - 10.1016/j.ijbiomac.2008.10.005

M3 - Article

C2 - 19022283

AN - SCOPUS:57849100670

SN - 0141-8130

VL - 44

SP - 86

EP - 91

JO - International Journal of Biological Macromolecules

JF - International Journal of Biological Macromolecules

IS - 1

ER -

Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this