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FFIII - Nye trends: Baggrund for udvikling af beslutningsværktøjer

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FFIII - Nye trends: Baggrund for udvikling af beslutningsværktøjer

Hansen, Tina Beck; Møller, Cleide Oliveira de Almeida

Publication date:

2016

Document Version

Også kaldet Forlagets PDF Link back to DTU Orbit

Citation (APA):

Hansen, T. B. (Forfatter), & Møller, C. O. D. A. (Forfatter). (2016). FFIII - Nye trends: Baggrund for udvikling af

beslutningsværktøjer. Lyd og/eller billed produktion (digital), DTU Fødevareinstituttet.

(2)

FFIII – Nye trends

Baggrund for udvikling af beslutningsværktøjer

Tina Beck Hansen

Cleide O. de A. Møller

Strategidag mellem FVST og DTU, 14. sept. 2016

(3)

Proces

HACCP (virksomhed)

ALOP

Consumer

Food supply chain Meal FSO

PC

PC

PC

Food safety decision

making

Risiko- håndtering

(FVST)

Risiko- vurdering

Værktøjer

(DST)

(4)

Forudsætning

Først: Risikohåndtering, Codex begreber

ALOP

Forbruger

Fødemiddel- kæde Måltid FSO

PC

PC

PC

PC = Effekt kriterium:

Effekten i forekomst eller koncentration af en fare der skal opnås ved en

kontrollerende proces

Fx 5 log reduktion af Salmonella i flydende helæg ved brug af pasteurisering

PrC = Proces kriterium:

Direkte aflæselige mål der viser at effekt kriteriet opnås

Fx pasteurisering i 12 sekunder ved 65ºC

Kilde: Jens Kirk Andersen (2010)

FVST

DTU

(5)

IT-værktøjer til brugerne

Dernæst: Beslutningsværktøjer, matematiske modeller

• Varmholdelse

–Alternativer til min. 65 ° C

• Nedkøling

–Alternativer til 65 til 10 ° C på maks. 3 timer

• Varmebehandling

–Alternativer til min. 75 ° C

(6)

Risikovurdering – simuleringsmodel

Koncentration C. perfringens Prævalens

C. perfringens

Prøve 1

Gentages 365 gange (1 år)

Scenario 0 Ingen vækst tillades under varmholdelse

Scenario 1 1 log- stigning tillades

Scenario 2 2 log- stigning tillades

Scenario 3 3 log-stigning tillades

Output

Antal pserveeringer ud af 100.000 der overskrider 10

5

CFU/g

Prøve 5

Prøve 2 Prøve 3 Prøve 4

(7)

Risikovurdering – input data C. perfringens

• FVST rapport om forekomst af Bacillus cereus, Clostridium perfringens og Staphylococcus aureus i varmholdte retter i 1993 – 1997

–N = 1262, C. perfringens pos = 3 (prævalens 0,24 %) –min., middel, maks. = 10, 1200, 2700 cfu/g

• FVST database fra før 2003 –Eksisterer ikke mere!

• FVST database, færdigretter 2003 – 2011

–N = 3712, C. perfringens pos = 70 (prævalens 1,9 %)

(8)

Koncentrationsfordeling, alle i 2003 – 2011

0 10 20 30 40 50 60

% o f p os sam pl es

Concentration, CFU/g

C. perfringens in RTE, 2003 - 2011

All RTE foods (n = 70)

0 10 20 30 40 50 60

% o f p os sam pl es

Concentration, CFU/g

C. perfringens in RTE, 2003 - 2011

Solid RTE foods (n = 31) Fluid RTE foods (n = 39)

1.9 % pos 1.4 % pos

2.6 % pos

(9)

Koncentrationsfordeling, 3 projekter i 2008

0 10 20 30 40 50 60 70 80

% o f p os sam pl es

Concentration, CFU/g

C. perfringens in RTE, 2008 (n = 11)

0 10 20 30 40 50 60 70 80

% o f p os sam pl es

Concentration, CFU/g

C. perfringens in RTE, 2008

Solid RTE foods (n = 4) Fluid RTE foods (n = 7)

0.31 – 1.12 % pos 0.05 – 0.69 % pos

Chi

2

, P = 0.10

0.10 – 0.95 % pos 0.42 – 2.10 % pos

Chi

2

, P = 0.09

(10)

Risikovurdering – output

Data No

growth 1 log-

increase 2 log-

increase 3 log- increase

2003 – 2011 276 492 789 1234

2008 – all 47 184 245 363

2008 – solid 0 0 13 112

2008 – fluid 124 479 617 765

Number of 100.000 servings that exceed 10 5 CFU/g

PC???

(11)

Beslutningsværktøj –

PC = maks. 1 log-stigning af C. perfringens

Opbevarings-

temperatur > 52°C? pH < 5,5?

NaCl i vand ≥ 2,9 %?

5,5 ≤ pH ≤ 6,0?

Sikker

Bestem k og find den sikre opbevarings-

temperatur i TABEL pH 6,0

Bestem k og find den sikre opbevarings-

temperatur i TABEL pH 6,5 JA

JA

Sikker

≥20°C ved JA

JA NEJ

NEJ

NEJ

NEJ

(12)

Næste step

• Samme øvelse for B. cereus

• FVST rapport om varmholdte retter 1993 – 1997

–N = 1309, B. cereus pos = 10 (prævalens 0,76 %) –min., middel, maks. = 10, 1500, 11000 cfu/g

• Foreløbige tal fra databasen 2003 – 2011 –N > 41000 før rensning

–N = 7263, B. cereus pos 4,7 % –Koncentrationsfordeling:

0 10 20 30 40 50 60

% af positive prøver

Faste RTE 2003-2011 Flydende RTE 2003-2011

Referencer

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Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of

Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of