دورية أكاديمية
The Quality and Bacterial Community Changes in Freshwater Crawfish Stored at 4 °C in Vacuum Packaging
| العنوان: | The Quality and Bacterial Community Changes in Freshwater Crawfish Stored at 4 °C in Vacuum Packaging |
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| المؤلفون: | Liang Qiu, Yunchun Zhao, Hui Ma, Xiaofei Tian, Chan Bai, Tao Liao |
| المصدر: | Molecules, Vol 27, Iss 23, p 8618 (2022) |
| بيانات النشر: | MDPI AG, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Organic chemistry |
| مصطلحات موضوعية: | crawfish, food preservation, microbial diversity, volatile flavor compounds function prediction, Organic chemistry, QD241-441 |
| الوصف: | Crawfish can be easily spoiled due to their rich nutrition and high water content, which is difficult to preserve. In this study, the dominant spoilage organisms in crawfish which were stored at 4 °C in vacuum packaging were identified by high-throughput sequencing technology; after sequencing the full-length 16S rRNA gene, the changes in the bacterial community structure, diversity and quality (texture, flavor, etc.) were analyzed. Our results reflected that the specific spoilage organisms (SSOs) of crawfish were Aeromonas sobria, Shewanella putrefaciens, Trichococcus pasteurii and Enterococcus aquimarinus, since their abundances significantly increased after being stored for 12 days at 4 °C under vacuum conditions. At the same time, the abundance and diversity of the microbial community decreased with storage time, which was related to the rapid growth of the dominant spoilage organisms and the inhibition of other kinds of microorganisms at the end of the spoilage stage. Function prediction results showed that the gene which contributed to metabolism influenced the spoilage process. Moreover, the decline in texture of crawfish was negatively correlated to the richness of SSOs; this may be because SSOs can produce alkaline proteases to degrade the myofibrillar protein. On the contrary, the unpleasant flavor of crawfish, resulting from volatile flavor compounds such as S-containing compounds and APEOs, etc., is negatively correlated to the richness of SSOs, due to the metabolism of SSOs by secondary metabolites such as terpenoids, polyketides and lips, which can lead to decarboxylation, deamination and enzymatic oxidation. These results are very important to achieve the purpose of targeted inhibition of crawfish spoilage at 4 °C in vacuum packaging. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1420-3049 09154914 |
| Relation: | https://www.mdpi.com/1420-3049/27/23/8618; https://doaj.org/toc/1420-3049 |
| DOI: | 10.3390/molecules27238618 |
| URL الوصول: | https://doaj.org/article/ad7ad34b091549148cef67cd4a99d1a3 |
| رقم الأكسشن: | edsdoj.7ad34b091549148cef67cd4a99d1a3 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14203049 09154914 |
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| DOI: | 10.3390/molecules27238618 |