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A comparative study of tea polyphenols and its palmitic acid-modified derivatives: their effects on the microbial ecosystem and biogenic amines in Chinese sausage

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Abstract

Control of biogenic amines (BAs) is important to guarantee the safety of sausage-like fermented meat products. This study investigated the influences of tea polyphenols (TP) and its lipophilic palmitic acid-modified derivatives, palmitoyl-TP (pTP) and palmitoyl-epigallocatechin gallate (pEGCG), on BAs and microbial ecosystem in Chinese sausages. TP, epigallocatechin gallate (EGCG), pTP, and pEGCG all reduced the formation of BAs and N-nitrosodimethylamine at 0.05% (g/g); yet, compared with TP and EGCG, the modified derivatives exhibited stronger action on BAs decreasing (P < 0.05), and pEGCG showed the highest effect (a reduction of total BAs from 376.22 to 168.98 mg/kg compared to control). The improved inhibitory effect of pTP and pEGCG should be attributed to their stronger dual-directional regulation of the bacterial and fungal communities during the natural fermentation of sausage. The modified pTP and pEGCG highly suppressed the growth of Staphylococcus, Candida, and Kurtzmaniella, all of which were positively correlated with BAs formation (all P < 0.05). However, pTP and pEGCG worked more effectively than the unmodified ones to promote Lactobacillus, Lactococcus, and Debaryomyces (all P < 0.05). The results above are significant for the application of palmitoyl-TP and similar TP derivatives in meat products in consideration of food safety.

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Data availability

The data used and/or analysed during the current study are available from the corresponding author on reasonable request.

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Not applicable.

Abbreviations

BAs:

Biogenic amines

TP:

Tea polyphenols

EGCG:

Epigallocatechin gallate

pTP:

Palmitoyl-TP

pEGCG:

Palmitoyl-EGCG

NDMA:

N-Nitrosodimethylamine

TAB:

Total aerobic bacteria

LAB:

Lactic acid bacteria

OTUs:

Operational taxonomic units

NCBI:

National center for biotechnology information

PCoA:

Principal coordinate analysis

LDA:

Linear discriminant analysis

LEfSe:

Linear discriminant analysis effect size algorithm

RDA:

Redundancy analysis

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Acknowledgements

The authors gratefully acknowledge the financial support provided by The Key Food Programme of Sichuan Province (No. 20ZDYF1250).

Funding

The authors gratefully acknowledge the financial support provided by The Key Food Programme of Sichuan Province (No. 20ZDYF1250).

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Authors

Contributions

QZ: Conceptualization, Investigation, Writing-original draft. MM: Investigation, Software. BBT: Visualization. QH: Supervision, Writing-Reviewing & Editing.

Corresponding author

Correspondence to Qiang He.

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Zhou, Q., Mo, M., Tang, B. et al. A comparative study of tea polyphenols and its palmitic acid-modified derivatives: their effects on the microbial ecosystem and biogenic amines in Chinese sausage. J Food Sci Technol 60, 1772–1781 (2023). https://doi.org/10.1007/s13197-023-05717-z

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  • DOI: https://doi.org/10.1007/s13197-023-05717-z

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