Table D.11.

Evaluation table of the physico‐chemical methods subgroups electrical parameters and differential scanning calorimetry to detect whether a previously frozen fish is commercially presented as ‘superchilled’

Evaluation criteria	Method evaluated
	Electrical parameters		Differential scanning calorimetry
	Dielectric properties	Electrical impedance
Applicability of the method for different fish species	–	+	–
Ability of the method to differentiate fresh fish from fish frozen at various temperatures	+	+	+
Use of a single method possible	+	++	+
Ease of use of the method	++	++	++
Validation of the method	+	+	+
Classification performance in discriminating as either frozen/not frozen	+	+	0
Evidence that superchilled fish will behave like fresh fish	0a	0a	0a
Strength of overall evidence (number of records; average appraisal score(b))	2; 4.5	5; 3.2	1; 1

0 = no information available; – = poor performance; + = weak performance/weak evidence; ++ = good performance/good evidence; +++ = excellent performance/good evidence.

^aThere is no evidence, but it has been assumed that superchilled fish would behave as fresh fish.

^bThe division of the total appraisal score of all the records and the number of records.