Effects of processing technology on physicochemical properties and antioxidant activity of lycopene microcapsules

  • PANG Jinxin ,
  • ZHANG Yi ,
  • WU Songheng ,
  • TONG Xiaoyang ,
  • XIA Qile ,
  • QIAO Yongjin
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  • 1(Crop Breeding & Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403,China)
    2(College of Food Sciences & Technology, Shanghai Ocean University, Shanghai 201306, China)
    3(School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
    4(Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310022, China)

Received date: 2022-09-22

  Revised date: 2022-11-14

  Online published: 2023-12-08

Abstract

The effects of two processes, spray drying and freeze-drying, on the physicochemical properties of lycopene microcapsules were investigated, which would provide a reference for the processing of microcapsules. Furthermore, the effects of spray-drying and freeze-drying methods were investigated to compare the physical properties, storage stability, microstructure, encapsulation rate, and antioxidant capacity of lycopene microcapsules. Results showed that the yield and solubility of spray-dried microcapsules were 25.48% and 4.89 g/L, respectively, and those of freeze-dried microcapsules were 39.35% and 8.77 g/L, respectively, which were lower than those of freeze-dried microcapsules. In comparison, the embedding rate of spray-dried microcapsules was as high as 66.88%, and that of freeze-dried microcapsules was 41.70%. Moreover, in terms of microstructure, the spray-dried microcapsules were spherical, while the freeze-dried microcapsules were fractional in shape, and the spherical structure could achieve a better lycopene embedding effect. The antioxidant capacity was expressed by hydroxyl radical scavenging rate, DPPH radical scavenging rate and ABTS cationic radical scavenging capacity, and results showed that the antioxidant activity of spray-dried microcapsules was higher than that of freeze-dried microcapsules. Although the yield of freeze-dried microcapsules was higher than that of spray-dried microcapsules, the antioxidant activity and microstructure of spray-dried microcapsules were better than that of freeze-dried microcapsules. Therefore, the lycopene microcapsules prepared by spray-drying technology were superior to freeze-drying technology.

Cite this article

PANG Jinxin , ZHANG Yi , WU Songheng , TONG Xiaoyang , XIA Qile , QIAO Yongjin . Effects of processing technology on physicochemical properties and antioxidant activity of lycopene microcapsules[J]. Food and Fermentation Industries, 2023 , 49(21) : 145 -152 . DOI: 10.13995/j.cnki.11-1802/ts.033696

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