Details

Autor(en) / Beteiligte

• Huang, Zhan
• Liu, Xiaochang
• Jia, Shiliang
• Zhang, Longteng
• Luo, Yongkang

Titel

The effect of essential oils on microbial composition and quality of grass carp (Ctenopharyngodon idellus) fillets during chilled storage

Ist Teil von

• International journal of food microbiology, 2018-02, Vol.266, p.52-59

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Antimicrobial and antioxidant effects of essential oils (oregano, thyme, and star anise) on microbial composition and quality of grass carp fillets were investigated. Essential oils treatment was found to be effective in inhibiting microbial growth, delaying lipid oxidation, and retarding the increase of TVB-N, putrescine, hypoxanthine, and K-value. Based on sensory analysis, shelf-life of grass carp fillets was 6days for control and 8days for treatment groups. Among the essential oils, oregano essential oil exhibited the highest antimicrobial and antioxidant activities. GC-MS analysis of essential oils components revealed that carvacrol (88.64%) was the major component of oregano essential oil. According to the results of high-throughput sequencing, Aeromonas, Glutamicibacter, and Aequorivita were the predominant microbiota in fresh control samples. However, oregano essential oil decreased the relative abundance of Aeromonas, while thyme and star anise essential oils decreased the relative abundance of Glutamicibacter and Aequorivita in fresh treated samples. The microbial composition of both control and treatment groups became less diverse as storage time increased. Aeromonas and Pseudomonas were dominant in spoiled samples and contributed to fish spoilage. Compared to the control, essential oils effectively inhibited the growth of Aeromonas and Shewanella in grass carp fillets during chilled storage. •High-throughput sequencing was used to assay microbial composition of fish flesh.•Essential oils delayed the increase of TBA, TVB-N, putrescine, and hypoxanthine.•Aeromonas and Pseudomonas were dominant in spoiled grass carp fillets.•Essential oils treatment inhibited the growth of Aeromonas and Shewanella.•Oregano essential oil was recommended to use in grass carp fillets.