Abstract: Effects of temperature fluctuation on the security of chilled rice during circulation at constant temperature were studied in this paper. Growth trend of total bacteria, changes of sensory quality, pH, and Aw of chilled rice stored at 4℃ after different temperature fluctuations were determined. And mathematical models were developed. Then an effectual method was offered, which could evaluate fleetly and availably shelf life and the security of chilled rice.

Key words: temperature fluctuation, chilled rice, microbial growth model