Dual-frequency power ultrasound effects on the complexing index, physicochemical properties, and digestion mechanism of arrowhead starch-lipid complexes
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Multi-scale structural interactions of the arrowhead starch-linoleic/stearic acid complexes under different durations (20, 40 & 60 min) of dual-frequency power ultrasound (DFPU, 20/40 kHz) and their underlying mechanisms were discussed. Differential scanning calorimetry and X-ray diffraction (XRD) revealed V6 type (V6-I, II) crystalline structure for ultrasonically-treated arrowhead starch-linoleic acid (UTAS-LA) complexes. An increased degree of short-range molecular order as IR ratios of 1045/1022 cm−1 was evident from the FTIR results. The complexing index (CI) values of the complexes were greater than 65%, and the highest CI values of 83.04% and 81.26% were found in the case of UTAS-LA40 and UTAS-LA60, respectively. SEM results showed that LA-complexes had a sponge-like structure with smooth surfaces, while the SA-complexes exhibited flaky structures with irregular shapes and rough surfaces. The V-type complexes exhibited a higher digestion resistance than native AS and un-sonicated AS-LA/SA complexes due to partial RDS convention to RS.
Original language | English |
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Article number | 105978 |
Journal | Ultrasonics Sonochemistry |
Volume | 84 |
ISSN | 1350-4177 |
DOIs | |
Publication status | Published - Mar 2022 |
Bibliographical note
Funding Information:
The authors wish to express their appreciation for the support obtained from the National Natural Science Foundation of China (Grants No. 32072355&31771977); The Jiangsu agricultural science and technology innovation fund (Grants No. CX (20) 3044); The Primary Research & Development Plan of Zhenjiang (Grants No. NY2020011); Sponsored by Key Laboratory of Modern Agricultural Equipment and Technology (Jiangsu University); Sponsored by Qing Lan Project (2020); Jiangsu Province Postdoctoral Science Foundation Special Funding Project (2019K114); Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). There are no conflicts of interest to declare. This article does not contain any studies involving human or animal subjects.
Publisher Copyright:
© 2022
- Arrowhead, Characterization, Digestion, Fatty acid, Physicochemical, Resistant starch, Starch-lipid complex, Ultrasound
Research areas
ID: 391498134