PRODUCT |
Pathogens contamination level | | PR | = RiskBeta (7, 30) | This research; Vose (1997) |
V. parahaemolyticus concentration | CFU/g | C | = –LN (1–PR) / 25 g | Sanaa et al. (2004) |
Initial contamination level | Log CFU/g | IC | = Log (C) | This research |
TRANSPORTATION TO MARKET |
Transportation |
Transportation time | h | Timetrans | = RiskPert (0, 3.339, 5) | Personal communication; This research |
Food temperature during transportation | °C | Temptrans | = RiskWeibull (1.3219, 2.8404, RiskShift (3.1093), Risktruncate (1, 40)) | Personal communication; This research |
Growth |
| | h0 | = average (growth rate × lag phase duration), Fixed 1.14 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Y0 | = average (Y0i), Fixed 3.1 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Yend | = average (Yendi), Fixed 5.6 | This research; Baranyi & Roberts (1994) |
| | ln(q) | = LN (1 / (EXP (h0) – 1)) | This research; Baranyi & Roberts (1994) |
Growth rate | Log CFU/g/h | GRtrans | = IF (Temptrans > 4.9515, 0.0330 × (Temptrans–4.9515))2), 0) | This research; Baranyi & Roberts (1994) |
V. parahaemolyticus growth model | Log CFU/g | C1 | = IC + 1 / (1 + EXP (–ln(q))) × (1 – 10−|Y0–Yend| / LN(10)) × GRtrans × Timetrans | This research; Baranyi & Roberts (1994) |
MARKET |
Market display |
Display time | h | TimeMark-dis | = RiskUniform(0,48) | Personal communication; This research |
Food temperature during display | °C | TempMark-dis | = RiskWeibull (2.2708, 21.394, RiskShift (–8.4157), RiskTruncate (–6, 18.1)) | Personal communication; This research |
Growth |
| | h0 | = average(growth rate × lag phase duration), Fixed 1.14 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Y0 | = average(Y0i), Fixed 3.1 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Yend | = average(Yendi), Fixed 5.6 | This research; Baranyi & Roberts (1994) |
| | ln(q) | = LN (1 / (EXP(h0) – 1)) | This research; Baranyi & Roberts (1994) |
Growth rate | Log CFU/g/h | GRMark-dis | = IF(TempMark-dis > 4.9515, 0.0330 × (TempMark-dis – 4.9515))2), 0) | This research; Baranyi & Roberts (1994) |
V. parahaemolyticus growth model | Log CFU/g | C2 | = C1 + 1 / (1 + EXP (-ln(q))) × (1 – 10−|Y0–Yend| / LN(10)) × GRMark-dis × TimeMark-dis | This research; Baranyi & Roberts (1994) |
HOME |
Home storage |
Storage time | H | TimeHome-st | = RiskUniform (0, 72) | Personal communication; This research |
Food temperature during storage | °C | TempHome-st | = RiskLogLogistic (–29.283, 33.227, 26.666, RiskTruncate (–5, 20)) | Lee et al. (2015) |
Growth |
| | h0 | = average (growth rate × lag phase duration), Fixed 1.14 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Y0 | = average (Y0i), Fixed 3.1 | This research; Baranyi & Roberts (1994) |
| Log CFU/g | Yend | = average (Yendi), Fixed 5.6 | This research; Baranyi & Roberts (1994) |
| | ln(q) | = LN (1 / (EXP (h0)–1)) | This research; Baranyi & Roberts (1994) |
Growth rate | Log CFU/g/h | GRHome-st | = IF (TempHome-st > 4.9515, 0.0330 × (TempHome-st – 4.9515))2), 0) | This research; Baranyi & Roberts (1994) |
V. parahaemolyticus growth model | Log CFU/g | C3 | = C2+1 / (1 + EXP (–ln(q))) × (1–10−|Y0–Yend| / LN(10)) GRHome-st × TimeHome-st | This research; Baranyi & Roberts (1994) |
CONSUMING |
Daily consumption amount | g | Consump | = RiskExpon (60.575, RiskShift (–1.4687), RiskTruncate (0, 348)) | KDCA (2016) |
Daily consumption frequency | % | ConFre | Fixed 0.28 | KDCA (2016) |
| | CF(0) | = 1 – 0.28 / 100 | KDCA (2016) |
| | CF(1) | = 0.28 / 100 | KDCA (2016) |
| | CF | = RiskDiscrete ({0, 1}, {CF (0), CF (1)}) | KDCA (2016) |
| | Amount | = IF (CF = 0, 0, Consump) | KDCA (2016) |
DOSE-RESPONSE |
V. parahaemolyticus amount | CFU | D | = 10C3 × Amount | |
Parameter of α | | α | Fixed 0.17 | Iwahori et al. (2010); FAO & WHO (2011) |
Parameter of β | | β | Fixed 1.18 × 105 | Iwahori et al. (2010); FAO & WHO (2011) |
RISK |
Probability of illness/person/day | | Risk | = 1 – (1 + D/β)−α | Iwahori et al. (2010); FAO & WHO (2011) |