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  • Title: Synergistic anti-oxidative and antimicrobial effects of oat phenolic compounds and ascorbate palmitoyl on fish balls during cold storage.
    Author: Shi R, Li Y, Liu L.
    Journal: J Food Sci; 2021 Oct; 86(10):4628-4636. PubMed ID: 34549438.
    Abstract:
    This study investigated the effect of antioxidants on lipid stability of mackerel (Scomber japonicus) fish balls. Oat phenolic acid compounds (OPC) and ascorbate palmitoyl (AP) were used to prolong the shelf life of steamed mackerel fish balls. Fish balls were stored at 4°C for 21 days, and the total bacterial count, hardness, whiteness, water holding capacity (WHC), pH, total volatile basic nitrogen (TVB-N), and thiobarbituric acid reactive substances (TBARS) value were monitored regularly. The results indicated that OPC+AP composite as a biological preservative could significantly inhibit the increase of the total bacterial count. Meanwhile, OPC and AP could maintain better hardness, whiteness, and WHC of fish balls during refrigerated storage. Furthermore, OPC and AP slowed down the increase of TVB-N and TBARS values. The results showed that OPC+AP had a synergistic effect on the storage time and could prolong the shelf life within the storage time. Adding OPC and AP was a promising strategy to improve the quality and shelf life of fish balls. PRACTICAL APPLICATION: The research provided a new application of OPC and AP for improving fish balls quality and shelf life during cold storage (4°C). OPC is a natural plant secondary metabolite from oat which exhibits excellent anti-oxidation. The research showed that OPC and AP combined with synergistic effect as biological preservatives can effectively inhibit the total bacterial count and reduce TBARS and TVB-N value of fish balls during the shelf life and maintain the hardness, which improved the quality and shelf life of fish balls.
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