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This table is an example of a portion of a HACCP plan relating to the control of scombrotoxin formation for a canned tuna processor, using histamine testing. It is provided for illustrative purposes only.  Histamine formation may be only one of several significant hazards for this product.

Updated: 7/24/98
 

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
Critical Control Point (CCP) Significant Hazard(s) Critical Limits for each Preventive Measure Monitoring  Corrective Action(s)  Records  Verification 
What  How  Frequency  Who 
Receiving - frozen tuna Scombrotoxin formation Less than 50 ppm histamine in all fish in the sample  Fish flesh for histamine content  Histamine analysis of 1 fish per ton if fish are 20 lbs. or more each and 2 fish per ton if fish are less than 20 lbs. each fish in each incoming lot  Every lot  Quality assurance staff  Subdivide lot and re-examine portions of the lot for histamine. Reject portion of the lot if any fish in the portion is 50 ppm or greater  Reports of analysis Review monitoring, corrective action and verification records within one week of preparation 
No more than 3 decomposed fish (persistent and readily perceptible) in a 118 fish sample  Amount of decomposition in incoming lot Sensory analysis 118 fish in every lot  Quality assurance staff Reject lot  Quality Assurance Record
Thawing Scombrotoxin formation For fish that have been frozen for 24 weeks or more: no more than 12 hours cumulative time for thawing and butchering  Length of frozen storage  Information from harvest or transport vessel  Every lot received  Receiving supervisor  Make adjustments to the thawing process  Receiving record  Review monitoring and corrective action records within one week of preparation 
Time of product exposure to unrefrigerated conditions during thawing  Visual observation of marked product  Start marked product at start of every thawing operation  Quality assurance staff  Analyze representative sample of lot for histamine. Divert to non-food use if any unit is 50 ppm or greater  Processing record 
For fish that have been frozen for less than 24 weeks: no more than 4 hrs. cumulative time for thawing and butchering Time of product exposure to unrefrigerated conditions during thawing Visual observation of marked product Start marked product at start of every thawing operation Quality assurance staff Same Processing record Same 
Butchering Scombrotoxin formation For fish that have been frozen for 24 weeks or more: no more than 12 hours cumulative time for thawing and butchering  Length of frozen storage  Information from harvest or transport vessel  Every lot received  Receiving supervisor  Move product to cooler and hold Receiving record  Review monitoring and corrective action records within one week of preparation
Time of product exposure to unrefrigerated conditions during butchering  Visual observation of marked product Start marked product at start of every thaw process  Quality assurance staff  Analyze representative sample of lot for histamine. Divert to a non-food use if any unit is 50 ppm or greater. Processing record 
For fish that have been frozen for less than 24 weeks: no more than 4 hrs. cumulative time for thawing and butchering Time of product exposure to unrefrigerated conditions during butchering Visual observation of marked product Start marked product at start of every thaw process Quality assurance staff Same  Processing record Same

FDA. 1998. Scombrotoxin (Histamine) Formation (A Chemical Hazard). Ch. 7, In Fish and Fishery Products Hazards & Controls Guide: Second Edition. 73-90. Department of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Seafood, Washington, DC.


Sea Grant

Updated: 07/18/07

Update Log

Pamela D. Tom, SeafoodNIC Director
Background profile

Sea Grant Extension Program
Food Science & Technology Department
University of California
One Shields Avenue, Davis, CA 95616

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