›› 2018, Vol. 30 ›› Issue (2): 186-191.DOI: 10.13679/j.jdyj.20170025

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Study on drying characteristics of Antarctic krill

Zhang Junwen1,2, Zheng Xiaowei1,2, Shen Jian1, Ouyang Jie1,2, Gao Xiang1,2, Zhou Chunsheng1,2, Tan Jiayu1   

  • Received:2017-07-19 Revised:2017-11-27 Online:2018-06-30 Published:2018-06-30

Abstract:

Antarctic krill is rich as a resource and rich in nutrients. It is considered the reserve protein bank for
human survival. Therefore, the question of how to ensure efficient use of this resource has become a focus of
current scientific and technological research. Both the drying curve and the drying rate curve of Antarctic
krill were studied under the condition of a constant temperature of 120℃, and hot air drying was undertaken
to simulate the conditions of the Antarctic sea area. The results showed that under constant drying conditions,
the drying rate was 0.497 g·cm–2·min–1, the critical water content was 0.56, and constant drying time accounted
for about 1/3 of the total time. When the moisture content was lower than a critical value, the material
entered the drying stage. In addition, the drying rate of Antarctic krill was found related to both the drying
temperature and the drying surface area of the material. The drying rate and the surface area of Antarctic
krill are accelerated by an increased drying rate, which has important implications and significance regarding
equipment design and the actual production of Antarctic krill as a food resource.

Key words: Antarctic krill, drying, drying curves, drying rate curves