Publication:
Amylose/amylopectin simple determination in acid hydrolyzed tapioca starch

Issued Date

2008-01-01

Resource Type

Article

ISSN

07179707
07179324

DOI

10.4067/S0717-97072008000300002

Other identifier(s)

2-s2.0-54949125657

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Journal of the Chilean Chemical Society. Vol.53, No.3 (2008), 1565-1567

Suggested Citation

Karntarat Wuttisela, Sujin Shobsngob, Wannapong Triampo, Darapond Triampo Amylose/amylopectin simple determination in acid hydrolyzed tapioca starch. Journal of the Chilean Chemical Society. Vol.53, No.3 (2008), 1565-1567. doi:10.4067/S0717-97072008000300002 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/19099

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Title

Amylose/amylopectin simple determination in acid hydrolyzed tapioca starch

Author(s)

Karntarat Wuttisela
 Sujin Shobsngob
 Wannapong Triampo
 Darapond Triampo

Other Contributor(s)

Mahidol University

Abstract

Analysis of the shift of wavelength maximum using a rapid colorimetric method was used to determine the ratio of amylose:amylopectin (Am:Ap) in acid-hydrolyzed tapioca starch. The absorbance maximum of 600 nm (Am:Ap of tapioca starch ≈22:78) moved to shorter wavelengths (590, 585, 570, 560, and 534 nm) as the decrease of the Am:Ap ratio due to hydrolysis of shorter chains that are not be able to form a complex with iodine. The amount of amylopectin itself may be unaltered or slightly decreased but the decrease in amylose caused a decrease in Am:Ap ratio.

Keyword(s)

Chemistry

Availability

URI

https://repository.li.mahidol.ac.th/handle/123456789/19099

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