Evaluation of Salmon (Salmo salar) and Rainbow Trout (Oncorhynchus mykiss) pin bones using textural analysis and micro X-ray computational tomography

Schroeder Sarah,Grigor John,Sturrock Keith,D Wilkin Jonathan,Savage Anne,Cassidy Philip,Töpfl Stefan

doi:10.1007/s13197-019-03803-9

Schroeder Sarah, Grigor John + Show 5 more

Open Access

https://doi.org/10.1007/s13197-019-03803-9

Copy DOI

Abstract

Industrially, common problems arise with the deboning pin bone process, where Atlantic Salmon (Salmo salar) and Rainbow Trout (Oncorhynchus mykiss) fillets, post rigor, are subjected to a pulling process to remove the pin bones from the fillet. This study measured the length of pin bones from two species of fish and two different industrial graded weights, and then used a texture analyser and µCT X-ray to measure the pulling force, break point and volume of the pin bones of both species of fish. Results showed that salmon pin bones required significantly higher pulling force to remove pin bones from the fish fillet when compared with Trout pin bones. Interestingly Trout pin bones were significantly longer and stronger than Salmon pin bones, but had significantly lower volume. This research has progressed the issues surrounding pin boning industrially, however, more studies are required in order to understand if these differences affect the overall deboning pin bone process.

Highlights

Common problems arise with the deboning pin bone process, where Atlantic Salmon (Salmo salar) and Rainbow Trout (Oncorhynchus mykiss) fillets, post rigor, are subjected to a pulling process to remove the pin bones from the fillet
Results showed that salmon pin bones required significantly higher pulling force to remove pin bones from the fish fillet when compared with Trout pin bones
Comparing pin bone length between species of fish shows similar profiles of pin bone length when compared between species, Trout pin bones are longer at pin bone 14–31 than Salmon pin bones, which are larger at pin bone 4–13

Summary

Introduction

Common problems arise with the deboning pin bone process, where Atlantic Salmon (Salmo salar) and Rainbow Trout (Oncorhynchus mykiss) fillets, post rigor, are subjected to a pulling process to remove the pin bones from the fillet. This study measured the length of pin bones from two species of fish and two different industrial graded weights, and used a texture analyser and lCT X-ray to measure the pulling force, break point and volume of the pin bones of both species of fish. Trout pin bones were significantly longer and stronger than Salmon pin bones, but had significantly lower volume. This research has progressed the issues surrounding pin boning industrially, more studies are required in order to understand if these differences affect the overall deboning pin bone process

Objectives

Methods

Results