JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 26 Issue 6
December 2025
Article Contents
CUI Bingbing, ZHOU Yanfang, ZHU Chenyan, et al. Effect of plasma-activated water treatment on the oxidation and digestion characteristics of PSE-like chicken protein isolate[J]. Journal of Light Industry, 2025, 40(6): 20-30. doi: 10.12187/2025.06.003
Citation: CUI Bingbing, ZHOU Yanfang, ZHU Chenyan, et al. Effect of plasma-activated water treatment on the oxidation and digestion characteristics of PSE-like chicken protein isolate[J]. Journal of Light Industry, 2025, 40(6): 20-30. doi: 10.12187/2025.06.003 shu

Effect of plasma-activated water treatment on the oxidation and digestion characteristics of PSE-like chicken protein isolate

  • Corresponding author: LI Ke, xc_like@163.com
  • Received Date: 2025-04-03
    Accepted Date: 2025-06-23
    Available Online: 2025-12-15
  • 【Objective】 To investigate the effects of plasma-activated water (PAW) treatment on the oxidation characteristics and in vitro digestion behavior of pale, soft, exudative-like chicken protein isolate (PPI). 【Methods】 PPI was extracted from PSE-like chicken and treated with PAW for different activation times. A systematic analysis was performed to evaluate changes in free radical signal intensity, ultraviolet absorption spectrum, carbonyl content, di-tyrosine content, free amino groups, and free sulfhydryl groups of PPI before and after PAW treatment. In vitro protein digestibility (IVPD), peptide content, and essential amino acid content of digestion products were also quantified. 【Results】 As activation time increased, PAW exhibited a significant decrease in pH (P<0.05) and significant increases in oxidation-reduction potential (ORP), electrical conductivity, and NO- content (P<0.05). PAW treatment significantly increased free radical signal intensity and ultraviolet absorption intensity of PPI, specifically elevating carbonyl and di-tyrosine contents while reducing free amino and free sulfhydryl contents (P<0.05). Notably, PPI40 showed a 3-fold in carbonyl content and 53.7% reduction in free sulfhydryl content compared to PPI0. For digestion characteristics, PAW treatment significantly increased IVPD, peptide content, and essential amino acid content (P<0.05), with IVPD of PPI40 increasing by 25.15% compared to PPI0. 【Conclusion】 PAW treatment promotes PPI oxidation and enhances its digestive characteristics.
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