Identification of boneless parts in silver carp (Hypophthalmicthys molitrix) fillets
The silver carp (Hypophthalmicthys molitrix) comprises a bout 50% to 85% of the composition of fish species in the polyculture system of warm water species in Iran. However, the difficulty in preparation of this speci es and the presence of pin bones are among the main reasons to restrict the dema nd of this species in the domestic markets, particularly in non-coastal province s. The objective of this study was to identify parts with less and/or no bones i n silver carp fillets. The shape, size and location of bones found in the flesh were studied by three methods: Enzyme digestion, cooking in hot water and X-ray scanning. Results showed that except vertebral bones and ribs, the thin bones fo und in different parts of the flesh can be categorized into three groups: Pin sh aped, Y shaped and non-regular shaped (several bifurcations). On the basis of de nsity and arrangement of bones, we found that the fillets are made up of three d ifferent layers: External layer mostly of dark muscles and lipids with no bones, middle layer with the highest density of bones and the internal layer which com prises about one third of the depth of fish flesh. The shape and arrangement of the bones in fish tail was significantly different. On the basis of recent findi ngs, the deep part of the back and a narrow band on the upper part of the back a re considered as boneless parts in silver carp.
| Main Authors: | , , |
|---|---|
| Format: | Journal Contribution biblioteca |
| Language: | Persian |
| Published: |
2010
|
| Subjects: | Hypophthalmichthys molitrix, X-rays, Fish physiology, Polyculture, Seafood, Freshwater fish, Fish fillets, Fish culture, Freshwater, |
| Online Access: | http://hdl.handle.net/1834/11692 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|