Tossine batteriche
Rilevazione di contaminazioni da tossine batteriche negli alimenti
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Analiti
Tossine batteriche
Alcune specie di batteri producono tossine che, se ingerite, possono causare intossicazioni alimentari anche gravi.
Le specie Staphylococcus aureus, Staphylococcus hyicus e Staphylococcus intermedius producono diverse proteine termostabili che si comportano come enterotossine (SET); insieme a Salmonella e Campylobacter, sono le cause principali di intossicazione alimentare. Si calcola che sia necessaria una popolazione di 5 x 10⁵ cellule di S. aureus in grado di produrre enterotossine per causare una vera infezione. Altri studi, però, indicano come siano sufficienti 100 – 200 ng di enterotossine stafilococciche per indurre i primi sintomi di intossicazione.
Le intossicazioni da SET sono associate al consumo di pasta, prodotti a base di carne, prosciutto, pasticci, prodotti a base di carne di pollo, pesce e prodotti ittici, latte e prodotti lattiero-caseari, gelati, prodotti a base di uova, insalate, dolciumi, ripieni per torte e preparati di varia origine. Sono di maggiore importanza le enterotossine dei gruppi sierologici A, B, C, D ed E.
Un’altra specie in grado di produrre tossine è il batterio Escherichia coli enteroemorragico (EHEC). I suoi ceppi patogeni prendono il nome dalle sostanze tossiche che producono: verotossina (VTEC) e tossina di Shiga (STEC). Le infezioni da STEC e VTEC sono tra le malattie di origine alimentare più diffuse e possono risultare anche fatali. Le fonti più comuni di contaminazione sono le carne crude e i prodotti lattiero-caseari non pastorizzati.
Product portfolio
| Product | Description | No. of tests/amount | Art. No. |
|---|---|---|---|
| RIDASCREEN® SET Total (96 tests) |
RIDASCREEN® SET Total is a sandwich enzyme immunoassay for the combined detection of Staphylococcus aureus enterotoxins A, B, C, D and E in fluid and solid foods as well as in bacterial cultures. Continua a leggere |
Microtiter plate with 96 wells (12 strips with 8 breakable wells each), 96 determinations. |
R4105 |
| RIDASCREEN® SET A,B,C,D,E |
RIDASCREEN® SET A,B,C,D,E is a sandwich enzyme immunoassay for the identification of Staphylococcus enterotoxins A, B, C, D and E in fluid and solid foods as well as in bacterial cultures. Based on its sensitivity the RIDASCREEN® SET A,B,C,D,E test … Continua a leggere |
Microtiter plate with 96 wells (12 strips with 8 wells each), one strip is necessary for analysis of one sample, 12 tests in total. |
R4101 |
| Product | Description | No. of tests/amount | Art. No. |
|---|---|---|---|
| Compact Dry X-SA |
Usage of Compact Dry X-SA is a simple and safe test procedure for determination and quantification of Staphylococcus aureus in foods, cosmetics or raw materials – as well as pharmaceutical raw materials. The ready-to-use plates consist of a special … Continua a leggere |
HS9621: 100 nutrient plates, HS9622: 40 nutrient plates, four plates are packed in one aluminum bag. |
HS9621 / HS9622 |
| Compact Dry EC |
Usage of Compact Dry EC is a simple and safe test procedure for determination and quantification of coliform bacteria and E. coli in foods, cosmetics, water or raw materials – as well as pharmaceutical raw materials. The ready-to-use plates consist … Continua a leggere |
HS8781: 100 nutrient plates, HS8782: 40 nutrient plates (HS8782), four plates are packed in one aluminum bag. |
HS8781 / HS8782 |
| Product | Description | No. of tests/amount | Art. No. |
|---|---|---|---|
| SureFast® STEC 4plex ONE |
The SureFast® STEC 4plex ONE can be applied for the fast and simple isolation, detection and differentiation of specific DNA sequences of the Escherichia coli virulence factors stx1 (subtype a-d), stx2 (subtype a-g), eae and the Escherichia coli … Continua a leggere |
100 reactions | F5265 |
| SureFast® MRSA 4plex |
The SureFast® MRSA 4plex is a real-time PCR for the direct, qualitative detection and differentiation of methicillin-resistant Staphylococcus aureus (MRSA). The test detects the SCCmec/orfX junction, the mecA/mecC-gene and a specific DNA sequence of … Continua a leggere |
100 reactions | F7117 |
| SureFast® Escherichia coli Serotype II 4plex |
The SureFast® Escherichia coli Serotype II 4plex is a real-time PCR for the direct, qualitative detection and differentiation of specific wzx gene DNA sequences of Escherichia coli O45, wbdl gene DNA sequences of Escherichia coli O111 and ihp1 gene … Continua a leggere |
100 reactions | F5168 |
| SureFast® Escherichia coli Serotype I 4plex |
The SureFast® Escherichia coli Serotype I 4plex is a real-time PCR kit for the direct, qualitative detection and differentiation of specfifc wzx gene DNA sequences of Escherichia coli O121, O26 and O103. Continua a leggere |
100 reactions | F5167 |
| SureFast® Foodborne Pathogens 4plex |
The SureFast® Foodborne Pathogens 4plex is a real-time PCR for for the direct, qualitative detection and differentiation of Escherichia coli virulence factors (stx1 [subtype a-d], stx2 [subtype a-g]), Listeria monocytogenes and Salmonella spp.. Each … Continua a leggere |
100 reactions | F5175 |
| SureFast®STEC Screening PLUS |
The SureFast® STEC Screening PLUS is a real-time PCR for the direct, qualitative detection of DNA sequences of the virulence factors stx1 (subtype a-d) and stx2 (subtype a-g) of Escherichia coli (STEC). Each reaction contains an internal … Continua a leggere |
100 reactions | F5105 |
| SureFast® Escherichia coli PLUS |
The test detects Escherichia coli DNA. Each reaction contains an internal amplification control (IAC). Continua a leggere |
100 reactions | F5157 |
| SureFast® EHEC/EPEC 4plex |
SureFast® EHEC/EPEC 4plex is a real-time PCR for the direct, qualitative detection and differentiation of DNA sequences of the virulence factors stx1 (subtype a-d), stx2 (subtype a-g), eae and the E. coli and Shigella spp. virulence factor ipaH. The … Continua a leggere |
100 reactions | F5128 |
| SureFast® Staphylococcus aureus PLUS |
The SureFast® Staphylococcus aureus PLUS is a real-time PCR for the direct, qualitative detection of a specific Staphylococcus aureus DNA sequence. Each reaction contains an internal amplification control (IAC). Continua a leggere |
100 reactions | F5116 |