Publication
Implications of pulsed electric field pre-treatment on goat milk pasteurization
| Summary: | Goat milk is an interesting product from a nutritional and health standpoint, although its physico-chemical composition presents some technological challenges, mainly for being less stable than cow’s milk at high temperatures. As pasteurization and ultra-high temperature processing are universally employed to ensure milk quality and safety, non-thermal methods, such as pulsed electric fields (PEFs), reduce the microbial load and eliminate pathogens, representing an interesting alternative for processing this product. This study demonstrates how the combined use of a PEF with short thermal processing and moderate temperature can be effective and energy-efficient in goat milk processing. A combination of thermal treatment at 63 °C after a low-intensity PEF (50 µs pulses, 3 Hz, and 10 kV·cm−1) caused the same reduction effect on the population of Listeria monocytogenes (goat’s raw milk artificially spiked), as compared to a thermal treatment at 72 °C without a PEF. However, z values are significantly higher when PEF is used as a pre-treatment, suggesting that it may induce heat resistance in the survival population of L. monocytogenes. The sensitivity of L. monocytogenes to high temperatures is less pronounced in goat’s milk than cow’s milk, with a more pronounced impact of a PEF on lethality when combined with lower temperatures in goat’s milk. The effect of a PEF on Escherichia coli viability was even more pronounced. It was also observed that thermal treatment energy needs with a PEF as a pre-treatment can be reduced by at least 50% of the total energy requirements. |
|---|---|
| Main Authors: | Araújo, Alberta |
| Other Authors: | Barbosa, Carla; Alves, Manuel Rui; Romão, Alexandre; Fernandes, Paulo |
| Subject: | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| Year: | 2023 |
| Country: | Portugal |
| Document type: | article |
| Access type: | open access |
| Associated institution: | Universidade do Minho |
| Language: | English |
| Origin: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438544626122752 |
|---|---|
| author | Araújo, Alberta |
| author2 | Barbosa, Carla Alves, Manuel Rui Romão, Alexandre Fernandes, Paulo |
| author2_role | author author author author |
| author_facet | Araújo, Alberta Barbosa, Carla Alves, Manuel Rui Romão, Alexandre Fernandes, Paulo |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Araújo, Alberta\"},{\"Person.name\":\"Barbosa, Carla\"},{\"Person.name\":\"Alves, Manuel Rui\"},{\"Person.name\":\"Romão, Alexandre\"},{\"Person.name\":\"Fernandes, Paulo\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Araújo, Alberta Barbosa, Carla Alves, Manuel Rui Romão, Alexandre Fernandes, Paulo |
| datacite.date.Accepted.fl_str_mv | 2023-10-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2023-10-31T09:08:33Z |
| datacite.date.embargoed.fl_str_mv | 2023-10-31T09:08:33Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| datacite.titles.title.fl_str_mv | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Araújo, Alberta Barbosa, Carla Alves, Manuel Rui Romão, Alexandre Fernandes, Paulo |
| dc.date.Accepted.fl_str_mv | 2023-10-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2023-10-31T09:08:33Z |
| dc.date.embargoed.fl_str_mv | 2023-10-31T09:08:33Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/87146 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | MDPI AG |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| dc.title.fl_str_mv | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Goat milk is an interesting product from a nutritional and health standpoint, although its physico-chemical composition presents some technological challenges, mainly for being less stable than cow’s milk at high temperatures. As pasteurization and ultra-high temperature processing are universally employed to ensure milk quality and safety, non-thermal methods, such as pulsed electric fields (PEFs), reduce the microbial load and eliminate pathogens, representing an interesting alternative for processing this product. This study demonstrates how the combined use of a PEF with short thermal processing and moderate temperature can be effective and energy-efficient in goat milk processing. A combination of thermal treatment at 63 °C after a low-intensity PEF (50 µs pulses, 3 Hz, and 10 kV·cm−1) caused the same reduction effect on the population of Listeria monocytogenes (goat’s raw milk artificially spiked), as compared to a thermal treatment at 72 °C without a PEF. However, z values are significantly higher when PEF is used as a pre-treatment, suggesting that it may induce heat resistance in the survival population of L. monocytogenes. The sensitivity of L. monocytogenes to high temperatures is less pronounced in goat’s milk than cow’s milk, with a more pronounced impact of a PEF on lethality when combined with lower temperatures in goat’s milk. The effect of a PEF on Escherichia coli viability was even more pronounced. It was also observed that thermal treatment energy needs with a PEF as a pre-treatment can be reduced by at least 50% of the total energy requirements. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/e04c259c-5f68-4dd9-9551-1204f9566cc5/download |
| id | rum_7196d1ca77c19c7d544431575441dcc2 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/87146 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/87146 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Araújo, Alberta Barbosa, Carla Alves, Manuel Rui Romão, Alexandre Fernandes, Paulo |
| publishDate | 2023 |
| publisher.none.fl_str_mv | MDPI AG |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engMDPI AGporGoat milk is an interesting product from a nutritional and health standpoint, although its physico-chemical composition presents some technological challenges, mainly for being less stable than cow’s milk at high temperatures. As pasteurization and ultra-high temperature processing are universally employed to ensure milk quality and safety, non-thermal methods, such as pulsed electric fields (PEFs), reduce the microbial load and eliminate pathogens, representing an interesting alternative for processing this product. This study demonstrates how the combined use of a PEF with short thermal processing and moderate temperature can be effective and energy-efficient in goat milk processing. A combination of thermal treatment at 63 °C after a low-intensity PEF (50 µs pulses, 3 Hz, and 10 kV·cm−1) caused the same reduction effect on the population of Listeria monocytogenes (goat’s raw milk artificially spiked), as compared to a thermal treatment at 72 °C without a PEF. However, z values are significantly higher when PEF is used as a pre-treatment, suggesting that it may induce heat resistance in the survival population of L. monocytogenes. The sensitivity of L. monocytogenes to high temperatures is less pronounced in goat’s milk than cow’s milk, with a more pronounced impact of a PEF on lethality when combined with lower temperatures in goat’s milk. The effect of a PEF on Escherichia coli viability was even more pronounced. It was also observed that thermal treatment energy needs with a PEF as a pre-treatment can be reduced by at least 50% of the total energy requirements.application/pdfporImplications of pulsed electric field pre-treatment on goat milk pasteurizationAraújo, AlbertaBarbosa, CarlaAlves, Manuel RuiRomão, AlexandreFernandes, PauloHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONAraújo, M. A.; Barbosa, Carla; Alves, Manuel Rui; Romão, Alexandre; Fernandes, Paulo, Implications of pulsed electric field pre-treatment on goat milk pasteurization. Foods, 12(21), 3913, 2023ISSNIsPartOf2304-8158DOIIsPartOf10.3390/foods122139132023-10-31T09:08:33Z2023-102023-10-30T20:59:33Z2023-10-01T00:00:00ZHandlehttps://hdl.handle.net/1822/87146http://purl.org/coar/access_right/c_abf2open accessPulsed electric fieldsPEFGoats milkCows milkListeria monocytogenesE. coliPasteurization1008338 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/e04c259c-5f68-4dd9-9551-1204f9566cc5/download |
| spellingShingle | Implications of pulsed electric field pre-treatment on goat milk pasteurization Araújo, Alberta Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| status | SINGLETON |
| subject.fl_str_mv | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| title | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| title_full | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| title_fullStr | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| title_full_unstemmed | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| title_short | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| title_sort | Implications of pulsed electric field pre-treatment on goat milk pasteurization |
| topic | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| topic_facet | Pulsed electric fields PEF Goats milk Cows milk Listeria monocytogenes E. coli Pasteurization |
| url | https://hdl.handle.net/1822/87146 |
| visible | 1 |