期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 153, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2021.112548
关键词
Debranched starch; Degree of polymerization; Cavity size; Carbon nanotube; Inclusion complex
资金
- National Natural Science Foundation of China-China [32101940]
- Ten Thousand Talent Program Youth Top-notch Talent Project-China
Debranched starch (DBS) can be used as a wall material to protect guest molecules, with the hydrophobic cavity size being a crucial parameter for the formation of inclusion complexes. The cavity sizes of DBS with different average degrees of polymerization were evaluated using carbon nanotubes, indicating potential for guiding the encapsulation of macromolecular guests by DBS.
Debranched starch (DBS) can be used as a wall material to protect guest molecules. The hydrophobic cavity size of DBS is a crucial parameter for determining the formation of inclusion complexes between DBS and guest molecules. Herein, the cavity sizes of DBS with different average degrees of polymerization (DPs) were evaluated using carbon nanotubes (CNTs) with different outer diameters. Three fractions of DBS with average DP of 14.53, 16.20, and 25.25 were obtained by gradient ethanol dissolution method. Subsequently, DBS-CNTs fabricated were tested to determine whether they formed complexes or not. The results of spectroscopic and thermal investigation confirmed that the ranges of cavity sizes of three fractions were 0.6-2 nm (DP 14.53), 0.6-2 nm (DP 16.20), and 0.6-4 nm (DP 25.25), respectively. These findings will guide the encapsulation of macromolecular guests by DBS.
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