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Volume 14
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10.3390/foods14091629
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Article

Extending the Shelf-Life of Live Clams, Venerupis corrugata—Important Aspects of Current Packaging and Advances in Modified Atmosphere Packaging

by
Cintia Borghetti Goes
1,
Susana Teixeira
2,
Cristina Mena
2,
Fátima Silva
2,
Andreia Cruz
3,
Inês Basílio
3,
Maria Conceição Hogg
1,
Morten Sivertsvik
4,
Paula Teixeira
1 and
Fátima Poças
1,2,*
1
Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
2
Escola Superior de Biotecnologia, Centre for Food Quality and Safety, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
3
Oceano Fresco S.A., Porto da Nazaré, 2450-075 Nazaré, Portugal
4
Department of Processing Technology, Nofima AS, Richard Johnsen gt 4, 4021 Stavanger, Norway
*
Author to whom correspondence should be addressed.
Foods 2025, 14(9), 1629; https://doi.org/10.3390/foods14091629
Submission received: 21 March 2025 / Revised: 17 April 2025 / Accepted: 22 April 2025 / Published: 5 May 2025
(This article belongs to the Section Food Packaging and Preservation)
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Abstract

Venerupis corrugata (pullet carpet shell) is a premium native clam species in Portugal. This species is highly perishable, typically sold live within 3 or 4 days, posing a significant risk of loss. Therefore, efforts to extend its shelf-life are relevant. The impact of the storage temperature (3, 5, 8 and 12 °C) on clams in plastic net bags and the effect of modified atmosphere packaging (MAP) were investigated. The survival percentage and microbiological and chemical parameters were evaluated, as well as sensory characteristics. The survival percentage and sensory aspects results indicate that the longest time with 95% live clams was observed at 5 °C and 8 °C, but lower temperatures (3 and 5 °C) have lower death rates after the threshold. In the MAP tests, the clams were kept closed due to confinement in plastic trays applying a vacuum, before gas flushing that drew the lid film over the clams. However, a negative effect of CO2 was observed for clams, with lower survival when packaged in 30% CO2. The shelf-life increased by only 1–2 days under >70% O2 with no CO2. These results show that this species is very sensitive, and MAP is not commercially effective for this application.
Keywords: bivalve molluscs; pullet carpet shells; temperature storage; survival percentage; quality; net bags; tightness packaging; MAP bivalve molluscs; pullet carpet shells; temperature storage; survival percentage; quality; net bags; tightness packaging; MAP

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MDPI and ACS Style

Goes, C.B.; Teixeira, S.; Mena, C.; Silva, F.; Cruz, A.; Basílio, I.; Hogg, M.C.; Sivertsvik, M.; Teixeira, P.; Poças, F. Extending the Shelf-Life of Live Clams, Venerupis corrugata—Important Aspects of Current Packaging and Advances in Modified Atmosphere Packaging. Foods 2025, 14, 1629. https://doi.org/10.3390/foods14091629

AMA Style

Goes CB, Teixeira S, Mena C, Silva F, Cruz A, Basílio I, Hogg MC, Sivertsvik M, Teixeira P, Poças F. Extending the Shelf-Life of Live Clams, Venerupis corrugata—Important Aspects of Current Packaging and Advances in Modified Atmosphere Packaging. Foods. 2025; 14(9):1629. https://doi.org/10.3390/foods14091629

Chicago/Turabian Style

Goes, Cintia Borghetti, Susana Teixeira, Cristina Mena, Fátima Silva, Andreia Cruz, Inês Basílio, Maria Conceição Hogg, Morten Sivertsvik, Paula Teixeira, and Fátima Poças. 2025. "Extending the Shelf-Life of Live Clams, Venerupis corrugata—Important Aspects of Current Packaging and Advances in Modified Atmosphere Packaging" Foods 14, no. 9: 1629. https://doi.org/10.3390/foods14091629

APA Style

Goes, C. B., Teixeira, S., Mena, C., Silva, F., Cruz, A., Basílio, I., Hogg, M. C., Sivertsvik, M., Teixeira, P., & Poças, F. (2025). Extending the Shelf-Life of Live Clams, Venerupis corrugata—Important Aspects of Current Packaging and Advances in Modified Atmosphere Packaging. Foods, 14(9), 1629. https://doi.org/10.3390/foods14091629

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