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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (16): 144-150.doi: 10.11924/j.issn.1000-6850.casb17050083

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Processing Techniques Affecting the Physical Properties of Instant Foxtail Millet Porridge

  

  • Received:2017-05-18 Revised:2017-07-31 Accepted:2017-08-30 Online:2018-06-06 Published:2018-06-06

Abstract: Instant porridge is becoming more popular nowadays with the accelerated pace of life. However, to improve the physical quality of instant porridge products is still the key point. We made instant millet porridge with foxtail millet as raw material, with high pressure and freeze drying as the main methods. Then, we investigated the effects of processing factors: material-water ratio, processing time and drying temperature on rehydration qualities and texture properties of the instant millet porridge using response surface methodology (RSM). The results showed that water absorption index (WAI), water solubility index (WSI), springiness, gumminess, chewiness were fitted the model of quadratic due to their high R2 and lack-of-fit. In the results, material- water ratio had no significant effect on springiness of quality of instant millet porridge, while processing time only had influences on the texture properties of rehydration millet porridge, and drying temperature had significant effect on WSI and gumminess. In addition, rehydration time and foxtail millet porridge moisture content had a negative correlation.

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