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Preservation of sliced cooked ham at 25, 30 and 37 °C under moderated pressure (hyperbaric storage) and comparison with refrigerated storage

Paper ID Volume ID Publish Year Pages File Format Full-Text
19018 43041 2015 8 PDF Available
Title
Preservation of sliced cooked ham at 25, 30 and 37 °C under moderated pressure (hyperbaric storage) and comparison with refrigerated storage
Abstract

•Hyperbaric preservation (under pressure) of ham at 25–37 °C.•At 50 MPa microbial counts were similar to storage under refrigeration.•At 100–150 MPa microbial loads were lower compared to refrigeration.•Hyperbaric preservation with no temperature control is very promising.

The feasibility of hyperbaric storage (HS) to substitute refrigeration as a lower energetic cost alternative to refrigeration, for sliced cooked ham preservation was assessed by using temperatures and pressures ranging 25–37 °C and 25–150 MPa for 4 and 8 h.At microbiological level, storage at 25 °C, 30 °C, and 37 °C, showed no effect on microbial growth at 25 MPa reaching levels similar to atmospheric pressure storage, around 5 log CFU/g for both total aerobic mesophiles (TAM) and lactic acid bacteria (LAB). Nevertheless, the storage at 50 MPa and 30 °C resulted in microbial growth inhibition, resulting in TAM and LAB counts similar to refrigeration, of about 3.8 log CFU/g for both the microorganisms. Additionally, the increase of the storage pressure to 100–150 MPa resulted in microbial inactivation, leading to microbial loads of almost 1 log CFU/g lower than refrigeration. In general, hyperbaric stored sliced cooked ham showed physicochemical parameters similar to the refrigerated samples.In conclusion, these results show that HS at uncontrolled (naturally variable room temperature conditions at 25–37 °C) is a promising alternative to refrigeration for cooked ham preservation. To this new preservation technology, no energetic costs are associated throughout storage, compared to refrigeration, needing only energy to generate the pressure and decompress, since no energy is required to maintain the pressure.

Keywords
Hyperbaric storage; preservation; Microbial growth inhibition; Cooked ham; RefrigerationHS, hyperbaric storage; TAM, total aerobic mesophiles; LAB, lactic acid bacteria; ENT, Enterobacteriaceae; YM, yeasts and moulds
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Preservation of sliced cooked ham at 25, 30 and 37 °C under moderated pressure (hyperbaric storage) and comparison with refrigerated storage
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 95, July 2015, Pages 200–207
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us