FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (22): 279-282.doi: 10.7506/spkx1002-6630-201022059

• Processing Technology • Previous Articles     Next Articles

Osmotic Dehydration of Pineapple Enhanced by Ultrasonic Treatment

REN Xian-e,HE Ren,HUANG Yong-chun,ZHANG Jian-miao,YANG Feng   

  1. Department of Biological and Chemical Engineering,Guangxi University of Technology, Liuzhou 545006, China
  • Received:2010-06-30 Revised:2010-11-11 Online:2010-11-25 Published:2010-12-29
  • Contact: REN Xian-e E-mail:rxe12@sina.com

Abstract:

In this paper, the osmotic dehydration processing of pineapple after ultrasonic treatment was investigated. Results showed that the optimal dehydration conditions were moderate ultrasonic frequency (48.1 kHz), ultrasonic power of 300 W, sugar concentration of 60%, sugar temperature at 60 ℃, ultrasonic treatment time of 40 min. Under these optimal dehydration conditions, the dehydration rate of pineapple was 41.41%. Ultrasonic treatment could improve mass transfer rate and decrease osmotic dehydration time.

Key words: ultrasonic treatment, pineapple, osmotic dehydration

CLC Number: