oru.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Alternative names
Publications (10 of 140) Show all publications
Lopez-Valladares, G., Danielsson-Tham, M.-L., Goering, R. V. & Tham, W. (2017). Lineage II (Serovar 1/2a and 1/2c) Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis Types Divided into PFGE Groups Using the Band Patterns Below 145.5 kb. Foodborne pathogens and disease, 14(1), 8-16
Open this publication in new window or tab >>Lineage II (Serovar 1/2a and 1/2c) Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis Types Divided into PFGE Groups Using the Band Patterns Below 145.5 kb
2017 (English)In: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 14, no 1, p. 8-16Article in journal (Refereed) Published
Abstract [en]

Among 504 clinical lineage II isolates of Listeria monocytogenes isolated during 1958-2010 in Sweden, 119 pulsed-field gel electrophoresis (PFGE) types (AscI) have been identified based on the number and distribution of all banding patterns in each DNA profile. In this study, these types were further divided into PFGE groups based on the configuration of small bands with sizes <145.5 kb. The 504 isolates included 483 serovar 1/2a isolates distributed into 114 PFGE types and 21 serovar 1/2c isolates distributed into 9 PFGE types; these were further divided into 21 PFGE groups. PFGE group, that is, configuration of small bands below 145.5 kb, and serovars were correlated. L. monocytogenes isolates belonging to PFGE groups A, B, C, E, F, H, K, L, M, S, V, W, Y, and Ö-6 to Ö-12 shared serovar 1/2a, with one exception. PFGE group E also included two PFGE types sharing serovar 1/2c and four PFGE types belonging to either serovar 1/2a or 1/2c. Isolates belonging to PFGE group N shared serovar 1/2c. In contrast to lineage I isolates, small fragments <33.3 kb were visible in all L. monocytogenes isolates belonging to lineage II. In the results from both the present and previous studies, the genomic region of small bands was genetically more conservative than in large bands. The distribution of these small bands established the relatedness of strains and defined a genetic marker for both lineages I and II, while also establishing their serogroup. The division of L. monocytogenes PFGE types into PFGE groups is advantageous as the profile of every new isolate can be identified easily and quickly through first studying the PFGE group affiliation of the isolate based on the smaller band patterns <145.5 kb, and then identifying the PFGE type based on the band patterns >145.5 kb.

Place, publisher, year, edition, pages
New Rochelle, USA: Mary Ann Liebert, 2017
Keyword
PFGE type, PFGE group, Listeria monocytogenes, serovar, lineage II
National Category
Genetics Food Science
Identifiers
urn:nbn:se:oru:diva-53597 (URN)10.1089/fpd.2016.2173 (DOI)000391818800002 ()27860487 (PubMedID)2-s2.0-85009260194 (Scopus ID)
Note

Funding Agency:

Stiftelsen Grythytte Akademi Stipendiefond

Available from: 2016-11-21 Created: 2016-11-21 Last updated: 2017-11-29Bibliographically approved
Westling, M., Danielsson Tham, M.-L., Jass, J., Nilsen, A., Öström, Å. & Tham, W. (2016). Contribution of Enterobacteriaceae to Sensory Characteristics in Soft Cheeses Made from Raw Milk. Paper presented at 9th International Conference on Predictive Modelling in Food, Rio de Janeiro, Brazil, September 8-12, 2015. Procedia Food Science, 7, 17-20
Open this publication in new window or tab >>Contribution of Enterobacteriaceae to Sensory Characteristics in Soft Cheeses Made from Raw Milk
Show others...
2016 (English)In: Procedia Food Science, ISSN 2211-601X, E-ISSN 2211-601X, Vol. 7, p. 17-20Article in journal (Refereed) Published
Abstract [en]

Microbiological and sensory methods were used to analyze 22 soft cheeses, of which 19 were made from raw milk, one was made from both raw and pasteurized milk and two were made from pasteurized milk. Moderate correlations (r-value 0.5–0.6 and p-value <0.01–0.05) were found between the levels of Enterobacteriaceae 37°C and the intensity of the sensory characteristics “bitter”, “metallic”, “pungent”, “manure” and “ammonia”. The present study indicates that it is possible to predict high levels of Enterobacteriaceae in soft cheeses made from raw milk using only the human senses (odor and taste).

Place, publisher, year, edition, pages
Amsterdam, Netherlands: Elsevier, 2016
Keyword
Soft cheeses, pasteurization, sensory profile, Enterobacteriaceae, raw milk
National Category
Food Engineering
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-51663 (URN)10.1016/j.profoo.2016.02.075 (DOI)000386627900005 ()
Conference
9th International Conference on Predictive Modelling in Food, Rio de Janeiro, Brazil, September 8-12, 2015
Funder
Science for Life Laboratory - a national resource center for high-throughput molecular bioscience
Available from: 2016-08-15 Created: 2016-08-15 Last updated: 2017-11-28Bibliographically approved
Danielsson-Tham, M.-L. & Tham, W. (2016). Is food hygiene a part of culinary arts and meal science?. In: Tobias Nygren, Agneta Yngve och Åsa Öström (Ed.), 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts. Paper presented at 1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 17-18 March, 2016 (pp. 28-28). Örebro: Örebro University, 1
Open this publication in new window or tab >>Is food hygiene a part of culinary arts and meal science?
2016 (English)In: 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts / [ed] Tobias Nygren, Agneta Yngve och Åsa Öström, Örebro: Örebro University , 2016, Vol. 1, p. 28-28Conference paper, Oral presentation only (Refereed)
Place, publisher, year, edition, pages
Örebro: Örebro University, 2016
National Category
Medical and Health Sciences Nutrition and Dietetics
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-49449 (URN)
Conference
1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 17-18 March, 2016
Available from: 2016-03-22 Created: 2016-03-22 Last updated: 2017-10-17Bibliographically approved
Lopez-Valladares, G., Danielsson-Tham, M.-L. & Tham, W. (2016). Listeria monocytogenes: a threat to the health of restaurant guests. In: Tobias Nygren, Agneta Yngve och Åsa Öström (Ed.), 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts. Paper presented at 1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 18 March, 2016 (pp. 35-35). Örebro: Örebro University, 1
Open this publication in new window or tab >>Listeria monocytogenes: a threat to the health of restaurant guests
2016 (English)In: 1st Granqvist Culinary Arts and Meal Science Symposium: Programme and Abstracts / [ed] Tobias Nygren, Agneta Yngve och Åsa Öström, Örebro: Örebro University , 2016, Vol. 1, p. 35-35Conference paper, Poster (with or without abstract) (Refereed)
Place, publisher, year, edition, pages
Örebro: Örebro University, 2016
National Category
Medical and Health Sciences Nutrition and Dietetics
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-49450 (URN)
Conference
1st Granqvist Culinary Arts and Meal Science Symposium, Grythyttan, 18 March, 2016
Available from: 2016-03-22 Created: 2016-03-22 Last updated: 2017-10-17Bibliographically approved
Lopez-Valladares, G., Danielsson-Tham, M.-L., Goering, R. V. & Tham, W. (2015). Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups. Foodborne pathogens and disease, 12(5), 447-453
Open this publication in new window or tab >>Division of Human Listeria monocytogenes Pulsed-Field Gel Electrophoresis (PFGE) Types Belonging to Lineage I (Serovar 4b, 1/2b, and 3b) into PFGE Groups
2015 (English)In: Foodborne pathogens and disease, ISSN 1535-3141, E-ISSN 1556-7125, Vol. 12, no 5, p. 447-453Article in journal (Refereed) Published
Abstract [en]

The 63 pulsed-field gel electrophoresis (PFGE) types identified among 427 clinical isolates of Listeria monocytogenes that were characterized in a previous study by serotyping and PFGE (AscI) could be further divided into 17 PFGE groups. While the 63 PFGE types, all part of lineage I, were established based on the number and distribution of all bands in each DNA profile, the 17 PFGE groups were based on the configuration of small bands with sizes L. monocytogenes serovar 4b isolates (n=334) were divided into 8 PFGE groups; the 32 PFGE types of serovar 1/2b isolates (n=90) and the serovar 3b isolates (n=3, 1 PFGE type) were divided into 9 PFGE groups. An association was observed between PFGE groups and serovars. L. monocytogenes isolates belonging to PFGE groups I, J, Q, R, X, Z, o-4, and o-5 all shared serovar 4b, whereas isolates from PFGE groups D, G, O, P, T, U, o-1, o-2, and o-3 shared serovar 1/2b. Small fragments L. monocytogenes isolates. From the results of the present study, a procedure for accelerating the identification of PFGE types when analyzing new PFGE profiles can be suggested. Therefore, we propose a stepwise procedure to PFGE profiling by first identifying the PFGE group using the smaller band patterns <145.5 kb, and then determining PFGE types based on the band patterns >145.5 kb.

Place, publisher, year, edition, pages
Mary Ann Liebert, 2015
National Category
Other Social Sciences not elsewhere specified
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-44674 (URN)10.1089/fpd.2014.1880 (DOI)000353777800010 ()25803595 (PubMedID)
Note

Funding Agency:

Stiftelsen Grythytte Akademi Stipendiefond

Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2017-12-04Bibliographically approved
Tham, W. & Danielsson-Tham, M.-L. (2015). Listeria och Erysipelothrix (1ed.). In: Annelie Brauner, Staffan Arvidsson, Jonas Blomberg, Birgitta Castor, Kerstin Falk, Klas Kärre, Annika Linde, Monica Thelestam (Ed.), Medicinsk mikrobiologi & immunologi: (pp. 210-214). Lund: Studentlitteratur AB
Open this publication in new window or tab >>Listeria och Erysipelothrix
2015 (Swedish)In: Medicinsk mikrobiologi & immunologi / [ed] Annelie Brauner, Staffan Arvidsson, Jonas Blomberg, Birgitta Castor, Kerstin Falk, Klas Kärre, Annika Linde, Monica Thelestam, Lund: Studentlitteratur AB, 2015, 1, p. 210-214Chapter in book (Refereed)
Abstract [sv]

Släktena Listeria och Erysipelothrix hör till gruppen grampositiva, icke-sporbildande regelbundet formade stavar. Gruppen är mycket heterogen och inkluderar både patogena och apatogena bakterier.

Place, publisher, year, edition, pages
Lund: Studentlitteratur AB, 2015 Edition: 1
National Category
Social Sciences
Research subject
Culinary Arts and Meal Science; Microbiology
Identifiers
urn:nbn:se:oru:diva-42868 (URN)978-91-44-03868-1 (ISBN)
Available from: 2015-02-19 Created: 2015-02-19 Last updated: 2017-10-18Bibliographically approved
Tham, W. & Danielsson-Tham, M.-L. (2014). Food Associated Pathogens. Boca Raton London New York: Taylor & Francis Group
Open this publication in new window or tab >>Food Associated Pathogens
2014 (English)Book (Refereed)
Abstract [en]

To stem the tide of food-borne illnesses, it is important to understand the source of the problem. This volume examines pathogenic bacteria, viruses, protozoan parasites, moulds, and mycotoxins in food. It discusses food-associated antimicrobial resistance and lessons learned from an actual food-borne outbreak. The book also explores clinical aspects of food-borne illness. The book is intended for medical science students. It will also be useful as a reference book for scientists, technologists, and inspectors in public health-related fields who regularly deal with issues related to food microbiology, food-borne infections and intoxications, and food safety.

 

Place, publisher, year, edition, pages
Boca Raton London New York: Taylor & Francis Group, 2014. p. 346
National Category
Social Sciences
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-31903 (URN)978-1-4665-8498-3 (ISBN)
Available from: 2013-10-12 Created: 2013-10-12 Last updated: 2017-10-18Bibliographically approved
Tham, W. (2014). Grönsaker och rotfrukter i ett bondehem på 1930-talet. In: Carl Jan Granqvist, Birgit Hemberg, Tomas Lidman, Christina Mattsson, Christina Möller, Dick Norberg, Kartsen Thurfjell (Ed.), Guide till årets svenska måltidslitteratiur 2014: (pp. 155-156). Grythyttan: Måltidsakademien förlag i Grythyttan AB
Open this publication in new window or tab >>Grönsaker och rotfrukter i ett bondehem på 1930-talet
2014 (Swedish)In: Guide till årets svenska måltidslitteratiur 2014 / [ed] Carl Jan Granqvist, Birgit Hemberg, Tomas Lidman, Christina Mattsson, Christina Möller, Dick Norberg, Kartsen Thurfjell, Grythyttan: Måltidsakademien förlag i Grythyttan AB , 2014, p. 155-156Chapter in book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Grythyttan: Måltidsakademien förlag i Grythyttan AB, 2014
Series
Årets svenska måltidslitteratur, ISSN 1652-2745
National Category
Social Sciences
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-40070 (URN)
Available from: 2014-12-30 Created: 2014-12-30 Last updated: 2017-10-17Bibliographically approved
Lopez-Valladares, G., Tham, W., Parihar, V. S., Helmersson, S., Andersson, B., Ivarsson, S., . . . Danielsson-Tham, M.-L. (2014). Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010). Epidemiology and Infection, 142, 2251-2260
Open this publication in new window or tab >>Human isolates of Listeria monocytogenes in Sweden during half a century (1958-2010)
Show others...
2014 (English)In: Epidemiology and Infection, ISSN 0950-2688, E-ISSN 1469-4409, Vol. 142, p. 2251-2260Article in journal (Refereed) Published
Abstract [en]

Isolates of Listeria monocytogenes (n=932) isolated in Sweden during 1958–2010 from human patients with invasive listeriosis were characterized by serotyping and pulsed-field gel electrophoresis (PFGE) (AscI). Of the 932 isolates, 183 different PFGE types were identified, of which 83 were each represented by only one isolate. In all, 483 serovar 1/2a isolates were distributed over 114 PFGE types; 90 serovar 1/2b isolates gave 32 PFGE types; 21 serovar 1/2c isolates gave nine PFGE types; three serovar 3b isolates gave one PFGE type; and, 335 serovar 4b isolates gave 31 PFGE types. During the 1980s in Sweden, several serovar 4b cases were associated with the consumption of European raw soft cheese. However, as cheese-production hygiene has improved, the number of 4b cases has decreased. Since 1996, serovar 1/2a has been the dominant L. monocytogenes serovar in human listeriosis in Sweden. Therefore, based on current serovars and PFGE types, an association between human cases of listeriosis and the consumption of vacuum-packed gravad and cold-smoked salmon is suggested.

Keyword
Cheese, Listeria monocytogenes, PFGE, serotyping, salmon
National Category
Occupational Health and Environmental Health
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-40067 (URN)10.1017/S0950268813003385 (DOI)000344921000003 ()24480252 (PubMedID)2-s2.0-84909991349 (Scopus ID)
Note

Funding Agency:

Research Foundation of Ivar and Elsa Sandberg 

Available from: 2014-12-30 Created: 2014-12-30 Last updated: 2018-01-11Bibliographically approved
Tham, W. & Danielsson-Tham, M.-L. (2014). Listeria monocytogenes – Very Food-borne Bacteria. In: Tham Wilhelm & Danielsson-Tham Marie-Louise (Ed.), Food Associated Pathogens: (pp. 124-140). Boca Raton London New York: CRC Press
Open this publication in new window or tab >>Listeria monocytogenes – Very Food-borne Bacteria
2014 (English)In: Food Associated Pathogens / [ed] Tham Wilhelm & Danielsson-Tham Marie-Louise, Boca Raton London New York: CRC Press, 2014, p. 124-140Chapter in book (Refereed)
Place, publisher, year, edition, pages
Boca Raton London New York: CRC Press, 2014
National Category
Social Sciences
Research subject
Culinary Arts and Meal Science
Identifiers
urn:nbn:se:oru:diva-31908 (URN)978-1-4665-8498-3 (ISBN)
Available from: 2013-10-12 Created: 2013-10-12 Last updated: 2017-10-18Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-6903-5322

Search in DiVA

Show all publications