Loading...
Please wait, while we are loading the content...
Similar Documents
Phosphorylation of Maize Starch Enhanced with High-Voltage Electrical Discharge (HVED) Instead of Thermal Treatment
| Content Provider | MDPI |
|---|---|
| Author | Tomasz, Zięba Antun, Jozinović Drago, Šubarić Borislav, Miličević Marijana, Blažić Jurislav, Babić Ačkar, Đurđica Gryszkin, Artur Grec, Marijana |
| Copyright Year | 2021 |
| Description | The aim of this research was to explore the use of a high-voltage electrical treatment (HVED) as a substitute for heating during the phosphorylation of maize starch. Starch was treated with HVED, phosphorylated with $Na_{2}HPO_{4}$ or $Na_{5}P_{3}O_{10}$ with and without thermal treatment and phosphorylated in combination with HVED prior to and after the chemical modification. When starch was phosphorylated with $Na_{2}HPO_{4}$, HVED was more efficient in catalyzing reaction (3.89 mg P/kg for 30 min HVED in relation to 0.43 mg P/kg for thermal treatment), whereas with $Na_{5}P_{3}O_{10}$ similar P content was achieved as with thermal treatment (0.76 P/kg for 30 min HVED in relation to 0.86 mg P/kg). The order of HVED and chemical reactions did not have a marked effect on phosphorous content. In combination with $Na_{2}HPO_{4}$, HVED pre-treatment had a more pronounced effect on the solubility and water absorption, whereas post-treatment was favoured with $Na_{5}P_{3}O_{10}$. Mean diameter was increased by all treatments, where HVED had a marked effect. Enthalpy of gelatinization ranged from 11.76 J/g for starch treated with $Na_{5}P_{3}O_{10}$ and 10 min-HVED to 13.58 J/g for $Na_{5}P_{3}O_{10}$ treated sample. G′ and G″ increased after both thermally and HVED enhanced phosphorylations, with a slightly more pronounced effect of the HVED. |
| Starting Page | 3231 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym13193231 |
| Journal | Polymers |
| Issue Number | 19 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-09-23 |
| Access Restriction | Open |
| Subject Keyword | Polymers Paper and Wood Non-thermal Process Na2hpo4 Na5p3o10 Rheological Properties Viscoelastic Properties |
| Content Type | Text |
| Resource Type | Article |
