PMID- 25943304 OWN - NLM STAT- MEDLINE DCOM- 20160609 LR - 20181202 IS - 1750-3841 (Electronic) IS - 0022-1147 (Linking) VI - 80 IP - 6 DP - 2015 Jun TI - Effects of High-Hydrostatic Pressure on Inactivation of Human Norovirus and Physical and Sensory Characteristics of Oysters. PG - M1330-5 LID - 10.1111/1750-3841.12899 [doi] AB - The purpose of the study was to determine the effect of high-hydrostatic pressure (HHP) on inactivation of human norovirus (HuNoV) in oysters and to evaluate organoleptic characteristics of oysters treated at pressure levels required for HuNoV inactivation. Genogroup I.1 (GI.1) or Genogroup II.4 (GII.4) HuNoV was inoculated into oysters and treated at 300 to 600 MPa at 25 and 0 degrees C for 2 min. After HHP, viral particles were extracted by porcine gastric mucin-conjugated magnetic beads (PGM-MBs) and viral RNA was quantified by real-time RT-PCR. Lower initial temperature (0 degrees C) significantly enhanced HHP inactivation of HuNoV compared to ambient temperature (25 degrees C; P < 0.05). HHP at 350 and 500 MPa at 0 degrees C could achieve more than 4 log10 reduction of GII.4 and GI.1 HuNoV in oysters, respectively. HHP treatments did not significantly change color or texture of oyster tissue. A 1- to 5-scale hedonic sensory evaluation on appearance, aroma, color, and overall acceptability showed that pressure-treated oysters received significantly higher quality scores than the untreated control (P < 0.05). Elevated pressure levels at 450 and 500 MPa did not significantly affect scores compared to 300 MPa at 0 degrees C, indicating increasing pressure level did not affect sensory acceptability of oysters. Oysters treated at 0 degrees C had slightly lower acceptability than the group treated at room temperature on day 1 (P < 0.05), but after 1 wk storage, no significant difference in sensory attributes and consumer desirability was observed (P > 0.05). CI - (c) 2015 Institute of Food Technologists(R) FAU - Ye, Mu AU - Ye M AD - Dept. of Animal and Food Sciences, Univ. of Delaware, Newark, DE, 19716, U.S.A. FAU - Lingham, Talaysha AU - Lingham T AD - Dept. of Agriculture and Natural Resources, Delaware State Univ, Dover, Delaware, 19901, U.S.A. FAU - Huang, Yaoxin AU - Huang Y AD - Dept. of Animal and Food Sciences, Univ. of Delaware, Newark, DE, 19716, U.S.A. FAU - Ozbay, Gulnihal AU - Ozbay G AD - Dept. of Agriculture and Natural Resources, Delaware State Univ, Dover, Delaware, 19901, U.S.A. FAU - Ji, Lin AU - Ji L AD - Dept. of Food Science, Rutgers, The State Univ. of New Jersey, New Brunswick, NJ, 08901, U.S.A. FAU - Karwe, Mukund AU - Karwe M AD - Dept. of Food Science, Rutgers, The State Univ. of New Jersey, New Brunswick, NJ, 08901, U.S.A. FAU - Chen, Haiqiang AU - Chen H AD - Dept. of Animal and Food Sciences, Univ. of Delaware, Newark, DE, 19716, U.S.A. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150505 PL - United States TA - J Food Sci JT - Journal of food science JID - 0014052 SB - IM MH - Animals MH - Color MH - Food Handling/*methods MH - *Food Microbiology MH - Humans MH - *Hydrostatic Pressure MH - Norovirus/*growth & development MH - Odorants MH - Ostreidae/*virology MH - Real-Time Polymerase Chain Reaction MH - Shellfish/*analysis/virology MH - Swine MH - Temperature OTO - NOTNLM OT - high-hydrostatic pressure OT - human norovirus OT - oysters OT - sensory evaluation EDAT- 2015/05/07 06:00 MHDA- 2016/06/10 06:00 CRDT- 2015/05/07 06:00 PHST- 2015/01/12 00:00 [received] PHST- 2015/04/03 00:00 [accepted] PHST- 2015/05/07 06:00 [entrez] PHST- 2015/05/07 06:00 [pubmed] PHST- 2016/06/10 06:00 [medline] AID - 10.1111/1750-3841.12899 [doi] PST - ppublish SO - J Food Sci. 2015 Jun;80(6):M1330-5. doi: 10.1111/1750-3841.12899. Epub 2015 May 5.