Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (3): 82-85,94.

• Food Science & Technology • Previous Articles     Next Articles

Influence of Ultrasonic Radiation on Extraction of Corn Carotenoids

Xiong Jian1  Feng Ling-ling1  Ye Jun2   

  1. 1.Research Institute of Light Industry and Chemical Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong.China;2.State Key Laboratory of Pulp and Paper Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-03-18 Online:2006-03-25 Published:2006-03-25
  • Contact: 熊犍(1965-)，男，博士，副教授，主要从事天然产物的性质与功能研究 E-mail:lejxiong@suet.edu.cn
  • About author:熊犍(1965-)，男，博士，副教授，主要从事天然产物的性质与功能研究
  • Supported by:

    国家自然科学基金资助项目(20436020，50573025)

PDF

939

Abstract:

The effect of ultrasonic radiation on the extraction of carotenoids from corn was investigated and the structure of extracted carotenoids was characterized by FTIR.The resuhs show that.when the mass ratio of corn to ethanolis 1:6.the ultrasonic radiation with a frequency of 20 kHz and a power of 900 W at 33~4O℃ f0r 30 min may result ifl an increased mass fraction of carotenoids.which is 16.25 times that wifhout ultrasonic treatment.and that the mass fraction of carotenoids increases with ultrasonic power at 33~35 ℃,little influence on the extraction of corn carotenoids being caused by ultrasonic frequency.The resuhs also indicate that,at the first extraction stage,the Sonic Horn should be immerged half depth into the extraction liquid.and after an extraction for 12 min.it should be immerged 1/2~1/3 depth into the extraction liquid.Moreover.the mechanism of ultrasonic enhance.ment on the extraction of COITI carotenoids was discussed in this papbr.The final results obtained by FTIR reveal that ultrasonic has no effect on the chemical structure of corn carotenoids.

Key words: ultrasonic radiation, corn carotenoid, extraction, ultrasonic frequency, ultrasonic power