Potato starch was chemically hydrolyzed to glucose using silicotungstic acid (H4SiW12O40·nH2O, HSiW) as catalyst under microwave irradiation in a short duration (5 min). Potato starch was completely converted to glucose, levulinic acid and formic acid. The methodology was further used for the conversion of potato peel waste (PPW), a zero value waste to glucose. A glucose yield of 59 wt.% was obtained upon the microwave irradiation (15 min) of PPW. The combined use of solid acid catalyst and microwave irradiation offers a fast and green process for glucose production from starch based waste materials.
Bibliographical noteFunding Information:
Gedanken thanks the Israel Ministry of Science and Technology (MOST) for the research grant 3-99763 and the Israel Science Foundation (ISF) for supporting the research via a grant 598/12 . Grateful thanks are due to Mr Udi Nemshitz for his timely help in fabricating the microwave oven with the needed modifications.
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- Microwave irradiation
- Potato peel waste
- Starch hydrolysis