Characterization of non-solvent precipitated starch using asymmetrical flow field-flow fractionation coupled with multiple detectors

Catalina Fuentes; Hisfazilah Saari; Jaeyeong Choi; Seungho Lee; Malin Sjöö; Marie Wahlgren; Lars Nilsson

doi:10.1016/j.carbpol.2018.10.100

Characterization of non-solvent precipitated starch using asymmetrical flow field-flow fractionation coupled with multiple detectors

Carbohydr Polym. 2019 Feb 15:206:21-28. doi: 10.1016/j.carbpol.2018.10.100. Epub 2018 Oct 30.

Authors

Catalina Fuentes¹, Hisfazilah Saari², Jaeyeong Choi³, Seungho Lee⁴, Malin Sjöö⁵, Marie Wahlgren⁶, Lars Nilsson⁷

Affiliations

¹ Food Technology, Engineering and Nutrition, Faculty of Engineering LTH, Lund University, PO Box 124, S-221 00 Lund, Sweden; School of Chemistry, Faculty of Pure and Natural Science, Universidad Mayor de San Andres (UMSA), PO Box 330, Cota Cota 27 St., La Paz, Bolivia. Electronic address: catalina_csfz@hotmail.com.
² Food Technology, Engineering and Nutrition, Faculty of Engineering LTH, Lund University, PO Box 124, S-221 00 Lund, Sweden. Electronic address: hisfazilah@gmail.com.
³ Department of Chemistry, Hannam University, Daejeon 34054, Republic of Korea. Electronic address: feelcjy@gmail.com.
⁴ Department of Chemistry, Hannam University, Daejeon 34054, Republic of Korea. Electronic address: slee@hnu.kr.
⁵ Food Technology, Engineering and Nutrition, Faculty of Engineering LTH, Lund University, PO Box 124, S-221 00 Lund, Sweden. Electronic address: malin.sjoo@food.lth.se.
⁶ Food Technology, Engineering and Nutrition, Faculty of Engineering LTH, Lund University, PO Box 124, S-221 00 Lund, Sweden. Electronic address: marie.wahlgren@food.lth.se.
⁷ Food Technology, Engineering and Nutrition, Faculty of Engineering LTH, Lund University, PO Box 124, S-221 00 Lund, Sweden. Electronic address: lars.nilsson@food.lth.se.

PMID: 30553314
DOI: 10.1016/j.carbpol.2018.10.100

Abstract

Non-solvent precipitated starch (non-SPS) is a novel component for starch-based emulsions. Herein, three non-SPS materials were prepared using ethanol as a precipitant of waxy maize starch granules (WMs). The WMs were either untreated (SP) or pre-treated via acid-hydrolysis (AHSP). In addition, SP was modified using n-octenyl succinic anhydride (OSA), yielding OSASP. This study aimed to investigate the influence of the non-SPS preparation method on the size, molar mass (M), and apparent density (ρ_app) of the materials when subjected to different dissolution/dispersion procedures using asymmetrical flow field-flow fractionation (AF4). The results showed that the molar mass, size, and apparent density depended on the type of non-SPS with a decrease in M_w (1.8-9.4 g/mol) and r_rms (60-148 nm) upon re-dispersion in different media in the order: SP > OSASP > AHSP. Moreover, different types of non-SPS materials displayed different conformational properties and were stable in aqueous solution at room temperature in the investigated time (24 h).

Keywords: Asymmetrical flow field-flow fractionation; Non-solvent precipitated starch; Waxy maize.