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Slowly digestible starch prepared from rice starches by temperature-cycled retrogradation
- Source :
- Carbohydrate Polymers. 84:970-974
- Publication Year :
- 2011
- Publisher :
- Elsevier BV, 2011.
-
Abstract
- The temperature-cycled retrogradation of rice starch used to prepare slowly digestible starch was investigated in this study. Our results showed that a maximum slowly digestible starch content of 51.62% was obtained from waxy rice starch at the optimal tested conditions: temperature cycles of 4/25 °C, at intervals of 24 h, and 7 days of storage. The results also indicated that there was a higher onset temperature ( T o ), a narrower melting temperature range ( T c − T o ), and a higher ratio (1047 cm −1 /1022 cm −1 ) of the slowly digestible starch products prepared under the temperature-cycled condition than that under the isothermal retrogradation. Furthermore, it was evident that the in vitro glycemic index of slowly digestible starch products with temperature-cycled retrogradation was reduced more than that with isothermal storage. These results suggest that the temperature-cycled retrogradation is applicable to prepare the high yield of slowly digestible starch from waxy rice starch.
Details
- ISSN :
- 01448617
- Volume :
- 84
- Database :
- OpenAIRE
- Journal :
- Carbohydrate Polymers
- Accession number :
- edsair.doi...........91942b0c1b2a09a838a869f342a3ab0e