Effect of annealing on the structural and physicochemical properties of waxy rice starch nanoparticles
| Autor: | Qingjie Sun, Liu Xiong, Yanfei Wang, Man Li, Shengju Ge, Xiliang Bian, Na Ji, Chunrui Sun, Lizhong Qiu |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Annealing (metallurgy) Starch Melting temperature 010401 analytical chemistry Spherical morphology Nanoparticle 04 agricultural and veterinary sciences General Medicine 040401 food science 01 natural sciences 0104 chemical sciences Analytical Chemistry Crystallinity chemistry.chemical_compound 0404 agricultural biotechnology chemistry Chemical engineering Nanoscopic scale Food Science |
| Zdroj: | Food Chemistry. 286:17-21 |
| ISSN: | 0308-8146 |
| DOI: | 10.1016/j.foodchem.2019.01.205 |
| Popis: | Annealing offers a facile and green approach to the modification of starch. This study was the first to investigate the effect of annealing on the properties of waxy rice starch nanoparticles (SNPs). The spherical morphology of SNPs hardly changed after annealing, and the nanoscale size of the SNPs was maintained in the range of 50–120 nm. The relative crystallinity of modified SNPs increased from 53.71% to 63.46% after annealing at 55 °C for 48 h. The annealing treatment increased the melting temperature from 78.3 °C to 95.7 °C, but decreased the melting range from 30.8 °C to 25.3 °C. The increased 1047 cm−1:1022 cm−1 ratio suggested that annealing resulted in an efficient packing of double helices. This work suggests that annealing, a safe and green method, produces modifications which can improve the properties of SNPs and therefore expand their applications in the fields of food, nutraceuticals, and other materials. |
| Databáze: | OpenAIRE |
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