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Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)

Total volatile basic nitrogen (TVBN), biogenic amine, total viable count (TVC), volatile compounds, and sensory evaluation were conducted to assess the quality of Chinese Mitten Crabs (Eriocheir sinensis) at living, zero, 2, 5, 10, 15, and 24 hr postmortem. The sensory evaluation found a noticeable...

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Autores principales: Wang, Yahui, Zhu, Yaozhou, Shi, Wenzheng, Wang, Xichang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215210/
https://www.ncbi.nlm.nih.gov/pubmed/32405390
http://dx.doi.org/10.1002/fsn3.1519
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author Wang, Yahui
Zhu, Yaozhou
Shi, Wenzheng
Wang, Xichang
author_facet Wang, Yahui
Zhu, Yaozhou
Shi, Wenzheng
Wang, Xichang
author_sort Wang, Yahui
collection PubMed
description Total volatile basic nitrogen (TVBN), biogenic amine, total viable count (TVC), volatile compounds, and sensory evaluation were conducted to assess the quality of Chinese Mitten Crabs (Eriocheir sinensis) at living, zero, 2, 5, 10, 15, and 24 hr postmortem. The sensory evaluation found a noticeable odor of spoilage becoming evident 10 hr postmortem. The TVBN value increased and then decreased as time increased, reaching 23.67 mg N/100 g at 24 hr postmortem. Although biogenic amines were detected at 5 hr postmortem, by 24 hr postmortem these had not reached dangerous levels of toxicity. The initial TVC (6.06 Log CFU/g) of the living crab samples was relatively high and climbed further postmortem, reaching 10.00 Log CFU/g 24 hr postmortem. Trimethylamine was detected in the living sample in belly meat and 2 hr postmortem in crab roe and reached 8.33 µg/g in the roe 24 hr postmortem. Indole was detected at 0 hr (belly meat) and 10 hr (crab roe) postmortem, but did not change significantly during the observation period. Sulfur‐containing compounds were detected 5 hr after death and gradually increased over the observation period. Most indicators showed major changes at 5 hr and 10 hr postmortem. By 10 hr postmortem, the crab had entered the putrefaction stage and was thus no longer safe for consumption.
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spelling pubmed-72152102020-05-13 Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis) Wang, Yahui Zhu, Yaozhou Shi, Wenzheng Wang, Xichang Food Sci Nutr Original Research Total volatile basic nitrogen (TVBN), biogenic amine, total viable count (TVC), volatile compounds, and sensory evaluation were conducted to assess the quality of Chinese Mitten Crabs (Eriocheir sinensis) at living, zero, 2, 5, 10, 15, and 24 hr postmortem. The sensory evaluation found a noticeable odor of spoilage becoming evident 10 hr postmortem. The TVBN value increased and then decreased as time increased, reaching 23.67 mg N/100 g at 24 hr postmortem. Although biogenic amines were detected at 5 hr postmortem, by 24 hr postmortem these had not reached dangerous levels of toxicity. The initial TVC (6.06 Log CFU/g) of the living crab samples was relatively high and climbed further postmortem, reaching 10.00 Log CFU/g 24 hr postmortem. Trimethylamine was detected in the living sample in belly meat and 2 hr postmortem in crab roe and reached 8.33 µg/g in the roe 24 hr postmortem. Indole was detected at 0 hr (belly meat) and 10 hr (crab roe) postmortem, but did not change significantly during the observation period. Sulfur‐containing compounds were detected 5 hr after death and gradually increased over the observation period. Most indicators showed major changes at 5 hr and 10 hr postmortem. By 10 hr postmortem, the crab had entered the putrefaction stage and was thus no longer safe for consumption. John Wiley and Sons Inc. 2020-04-17 /pmc/articles/PMC7215210/ /pubmed/32405390 http://dx.doi.org/10.1002/fsn3.1519 Text en © 2020 The Authors. Food Science & Nutrition published by Wiley Periodicals, Inc. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Wang, Yahui
Zhu, Yaozhou
Shi, Wenzheng
Wang, Xichang
Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title_full Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title_fullStr Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title_full_unstemmed Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title_short Quality evaluation of living and postmortem Chinese mitten crabs (Eriocheir sinensis)
title_sort quality evaluation of living and postmortem chinese mitten crabs (eriocheir sinensis)
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215210/
https://www.ncbi.nlm.nih.gov/pubmed/32405390
http://dx.doi.org/10.1002/fsn3.1519
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