The antioxidant and antimicrobial properties ofCamellia sinensisandPsidium guajavaleaf extracts were determined and applied as soaking solutions for snakehead (Channa striata) fillets prior to 12-day ice storage. The scavenge 50% of the DPPH (2,2ʹ-diphenyl-1-picrylhydrazyl) free radicals (IC50) ofC. sinensiswas 7.63 µg/mL and 5.04 µg/mL forP. guajavaextract. The minimum inhibition concentrations (MIC) ofC. sinensisandP. guajavaagainstAeromonas hydrophilawere 625 and 313 µg/mL, respectively. The IC50and MIC concentrations were then applied as extract solutions for soaking snakehead fillets before ice storage. During ice storage, snakehead fillets treated with plants extracts showed reduced lipid oxidation, inhibited bacteria growth, and enhanced sensory properties compared to untreated samples. Based on the total viable count, shelf life of snakehead fillets treated withC. sinensisandP. guajavaextracts can be prolonged up to 8 days while less than 8 days for the control treatment.
Tạp chí khoa học Trường Đại học Cần Thơ
Lầu 4, Nhà Điều Hành, Khu II, đường 3/2, P. Xuân Khánh, Q. Ninh Kiều, TP. Cần Thơ
Điện thoại: (0292) 3 872 157; Email: tapchidhct@ctu.edu.vn
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