PHYSICAL, CHEMICAL AND QUALITY INDICES OF THREE IMPORTED FROZEN MARINE FISH SPECIES SOLD IN ZARIA, NIGERIA
PHYSICAL, CHEMICAL AND QUALITY INDICES OF THREE IMPORTED FROZEN MARINE FISH SPECIES SOLD IN ZARIA, NIGERIA
No Thumbnail Available
Date
2016-04
Authors
ABUBAKAR, Rabiat
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The physical and chemical quality indices of imported frozen marine fishes Sardina pilchardus,
Trachurus trachurus, Clupea harengus sold at Sabongari Zaria were determined according to
standard procedures. For the physical properties, the electrical properties, moisture content and
pH of the samples evaluated. For Sardina pilchardus were 2.14 0.58, 60.1 6.30 and
7.04 0.10, respectively and for Trachurus trachurus the values were 2.92 0.53, 58.25 0.05
and 7.15 0.04. Clupea harengus, they were 2.02 0.323, 55.15 0.45 and 6.98 0.1,
respectively. For chemical properties, the thiobarbituric Acid (TBA), Freefattyacid (FFA),
Extractable protein nitrogen (EPN), formaldehyde, indole, and ash content values for Sardina
pilchadus were 0.5 0, 2.35 0.25, 7.4 5.3.80, 1.7 0.35, 1.55 0.05 and 1.35 0.15,
respectively, for Trachurus trachurus, the values were 0.45 0.05, 1.15 0.919, 3.1 0.35,
1.4 0.10, 1.85 0.05 and 1.25 0.05, respectively and for Clupea harengus, the values were
0.45 0.071, 1.9 0.20, 5.2 2.10, 1.3 0.15, 1.9 0 and 1.13 0.43, respectively. Freefattyacid
and Extractable protein nitrogen were highest in Sardina pilchardus (2.35) and (7.4) EPN
respectively. In addition, quality index method was conducted by 24 panelists, Sardina
pilchardus and Clupea harengus were graded as having good quality, Trachurus trachurus was
graded to have satisfactory quality. All the physico-chemical indices indicated that the examined
frozen samples were within permissible limit values set by National regulatory bodies.
Description
A DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA FOR THE AWARD OF MASTERS OF EDUCATIONAL BIOLOGY
DEPARTMENT OF BIOLOGICAL SCIENCES, FACULTY OF SCIENCE, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA.
Keywords
MARINE FISH SPECIES,, IMPORTED FROZEN,