Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 42, Issue 4, Pages 805-812Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2008.11.012
Keywords
Rice crackers; Oil uptake; Deep fat frying; Frying optimization
Categories
Funding
- USDA-CSREES [2006-38889-03537]
- Thai Ministry of the University Affairs
- Royal Thai Government
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Physico-chemical properties of fried rice crackers were studied as a function of fish powder content, processing conditions, frying temperature and frying time. The results showed that addition of fish powder content at 5, 10 and 15 g/100 g reduced the oil uptake by approximately 10, 14 and 22 g/100 g (db), respectively in comparison to the control without fish powder. The deep fried rice crackers mixed with fish powder tended to be lower in hardness, lower in expansion ratio and higher in bulk density in comparison to the control sample. The color parameter, L* of fried rice crackers decreased with increase in fish powder content. In contrast, a* and b* values increased with increase in fish powder content. The moisture content of deep fried rice crackers decreased with increase in frying temperature and frying time. The oil uptake in fried rice crackers increased with increase in frying time but decreased with increase in frying temperature. With increase in frying temperature and time, the texture of rice crackers became harder, the bulk density increased, and the expansion ratio decreased. The optimum conditions resulting in desirable physico-chemical properties and minimum oil uptake were rice crackers with fish powder content of 9 g/100 g, fried at a temperature of 220 degrees C for 60 s. Published by Elsevier Ltd on behalf of Swiss Society of Food Science and Technology.
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