FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (12): 701-704.

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Analysis of Mechanism of Nonenzymatic Browning of Pineapple Juice Concentrate during Storage

 TENG  Jian-Wen, LI  Xin, XIA  Ning, WEI  Bao-Yao   

  1. 1.Institute of Light Industry and Food,Guangxi University,Nanning 530004,China; 2.Quality and Technical Supervision Bureau of Wujin,Wujin 213159,China
  • Online:2008-12-15 Published:2011-12-08

Abstract: Mechanism of nonenzymatic browning of pineapple juice concentrates made from whole pineapple with peel during storage was investigated in this study by means of path coefficient analysis. It was found experimentally that the change of chromatism is closely related to the changes of polyphenols,anthocyanins,VC and HMF in pineapple juice concentrate during storage at 18℃ and 37℃. The higher initial content and accumulation rate of anthocyanins both affect the quality of pineapple juice concentrate,and the anthocyanins in pineapple juice concentrate are the most important factors causing its quality degration.

Key words: pineapple juice concentrate, nonenzymatic browning, factors, path coefficient analysis