Effects of Lactobacillus plantarum NJAU-01 on the protein oxidation of fermented sausage.

Affiliation

Key Lab of Meat Processing and Quality Control, Ministry of Education, Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China. Electronic address: [Email]

Abstract

This study was conducted to investigate the effects of Lactobacillus plantarum NJAU-01 isolated from Chinese dry-cured ham (Jinhua ham) on the regulation of protein oxidation of fermented sausages. Fermented sausages were prepared with different concentrations of L. plantarum NJAU-01 (105 CFU/g, 107 CFU/g and 109 CFU/g), and the commercial strain was used as positive control. The results showed that L. plantarum NJAU-01 at 107 CFU/g and 109 CFU/g significantly lowered the protein carbonyl content and protein surface hydrophobicity compared with the control (P < 0.05). The total sulfhydryl contents in L. plantarum NJAU-01 groups were significantly higher than that of the group without starter culture (P < 0.05). Significant changes were found in sarcoplasmic protein bands within 130-250 kDa, 100-130 kDa and 25-35 kDa during sausage fermentation (P < 0.05). Our data suggest that L. plantarum NJAU-01 has the potential to be an antioxidant starter culture in fermented sausages.

Keywords

Fermentation strain,Fermented sausage,Lactobacillus plantarum NJAU-01,Protein oxidation,

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