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Updated: Feb 24, 2026

Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
Single helix in V-type starch carrier determines the encapsulation capacity of ethylene
Linfan Shi1, Xiong Fu2, Qiang Huang2
1School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China.
Abstract:
V-type starch carriers with different single helix contents were prepared using alcoholic-alkaline treatment followed by ethanol precipitation. Ethylene gas was entrapped into V-type starch carriers using a solid encapsulation method. The morphological and structural properties of inclusion complexes (ICs) were characterized using scanning electron and light microscopy, X-ray diffractometry, 13C solid-state nuclear magnetic resonance (NMR) and Raman spectroscopy. Aqueous ethanol treatment resulted in swelling and aggregation of starch granules, and B-type diffraction reflections were either reduced or completely lost with evolution of V-type pattern. Ethylene concentrations in ICs vary from 15.4% to 23.6% (w/w), which was positively correlated with the single helix content in V-type starch carriers. The formation of ICs was confirmed by appearance of the characteristic peak associated with ethylene molecule on the 13C NMR (123.14ppm) and Raman (1630cm-1) spectra. For the first time, we demonstrated that the single helix in V-type starch carrier determines the encapsulation capacity of ethylene.
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