Effect of Isolation Methods on Physicochemical Properties of Purple-fleshed Sweet Potato Starch

Elisa Julianti, Herla Rusmarilin, Ridwansyah, Era Yusraini

2018

Abstract

Pretreatment methods in starch manufacturing will influence starch properties. In the present study the purple-fleshed sweet-potato (PFSP) starch was produced with different isolation agents: distilled water, sodium metabisulfite, and citric acid, and their effect on yield and physicochemical properties of starch was evaluated. Isolation of PFSP starch by sodium metabisulfite yielded the greatest recovery of starch (12.12%). Isolation methods significantly affected the fat, total starch, amylose, amylopectin and crude fiber content of PFSP starch. The isolation methods gave no significant effect on the color (lightness) and whiteness of PFSP starch. The starch content of PFSP starches from distilled water, sodium metabisulfite and citric acid isolation were 58.49; 50.20; and 62.93% respectively, while amylose content and whiteness of PFSP starch varied from 20.69 – 28.34% and 64.09 – 66.93 respectively.

Paper Citation

in Harvard Style

Julianti E., Rusmarilin H., Ridwansyah. and Yusraini E. (2018). Effect of Isolation Methods on Physicochemical Properties of Purple-fleshed Sweet Potato Starch.In Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR, ISBN 978-989-758-449-7, pages 37-41. DOI: 10.5220/0010079900370041

in Bibtex Style

@conference{icosteerr18,
author={Elisa Julianti and Herla Rusmarilin and Ridwansyah and Era Yusraini},
title={Effect of Isolation Methods on Physicochemical Properties of Purple-fleshed Sweet Potato Starch},
booktitle={Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,},
year={2018},
pages={37-41},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010079900370041},
isbn={978-989-758-449-7},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,
TI - Effect of Isolation Methods on Physicochemical Properties of Purple-fleshed Sweet Potato Starch
SN - 978-989-758-449-7
AU - Julianti E.
AU - Rusmarilin H.
AU - Ridwansyah.
AU - Yusraini E.
PY - 2018
SP - 37
EP - 41
DO - 10.5220/0010079900370041