Dwiana, Kartika Puspa (2014) Impact of Drying Temperatures on Amylose, Resistant Starch and In Vitro Starch Digestibility of Instant Arrowroot (Marantaarundinacea) Starch and Flour. Masters thesis, Magister Teknologi Pangan Unika Soegijapranata.
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Abstract
Low Glycemic Index (GI) food products could become good choices for diabetic patients or people at risk of developing diabetes type 2. Arrowroot tuber (Maranta arundinacea) is a local tuber that has lower GI (8-32). Glycemic Index strongly related with starch digestibility. Amylose and resistant starch are two factors that influence starch digestion.Higher amylose and resistant starch, related with crystalline form of starch, can lower starch digestion. Processing arrowroot into instant starch or flour with low starchy digestion can be a proper choice. Drying using high temperature is known to be able to increase amylose, resistant starch and reduce the starch digestibility. This researh aim was to evaluate the effect of the drying temperatures (80°C, 90°C and 100°C)on the amylose, resistant starch, and in vitro starch digestibility of instant arrowroot flour and starch.The analysis done were amylose, resistant starch and in vitro starch digestibility analysis. The higher the drying temperatures, resulted higher amylose content in instant starch and flour (Δamylose up to 34%).For resistant starch analysis, the result showed that there was no significant difference between instant arrowroot starch and flour, also among the drying temperatures. Native starch and flour had the highest content of resistant starch. In vitro starch digestibility showed the highest glucose and starch released at the 120 minute, while at the 150 minute the glucose and starch release started to decrease. There are negative correlation between resistant starch and starch digestibility. The significant negative correlation was found at instant flour dried at 100°C.
| Item Type: | Thesis (Masters) |
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| Subjects: | 500 Science > 540 Chemistry |
| Divisions: | Graduate Program in Master of Food Technology |
| Depositing User: | Mrs Rikarda Ratih |
| Date Deposited: | 26 Aug 2015 01:14 |
| Last Modified: | 13 Oct 2015 09:02 |
| URI: | http://repository.unika.ac.id/id/eprint/179 |
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