Pilot-Scale Ensilaging of Herring Filleting Co-Products and Subsequent Separation of Fish Oil and Protein Hydrolysates
Journal article, 2022
At 8500×g, the recovery of oil and hydrolysates were 9.7 and 53.0% w/w, respectively, from heat-treated silage, while recoveries were 4.1 and 48.1% w/w, respectively, from non-heat treated silage. At 4500×g, being a more scalable approach, corresponding numbers were 8.2 and 47.1% (w/w) as well as 2.0 and 40.2% (w/w). The recovered fsh oil contained 8% EPA and 11% DHA of total fatty acids. Free fatty acids (FFA), peroxide value (PV), p-anisidine value (p-AV), and total oxidation (TOTOX) values of oils were in the range of 4–7% (FFA), 3.6–3.7 meq/kg oil (PV), 2.5–4.0 (p-AV), and 9.9–11.1 (TOTOX), respectively, which were within the acceptable limits for human consumption specifed by the GOED voluntary monograph.
The recovered protein hydrolysates contained peptides in the molecular weight range 0.3–6 kDa (~ 37%) and 11–34 kDa (~ 63%). Also, the remaining solids contained 15–17% (w/w) protein, having 44–45% essential amino acids. Overall, the results suggest that herring co-product silage is a valuable source of fsh oil and protein hydrolysates, paving the way for ensilaging based-biorefning of herring co-products into multiple products.
Herring
By-products
Pilot scale
Ensilaging
Valorization
Silage
Author
Mursalin Sajib
Chalmers, Biology and Biological Engineering, Food and Nutrition Science
João Pedro Trigo
Chalmers, Biology and Biological Engineering, Food and Nutrition Science
Mehdi Abdollahi
Chalmers, Biology and Biological Engineering, Food and Nutrition Science
Ingrid Undeland
Chalmers, Biology and Biological Engineering, Food and Nutrition Science
Food and Bioprocess Technology
1935-5130 (ISSN) 1935-5149 (eISSN)
Vol. 15 10 2267-2281Engineering Nutritious Seafood by-products to Improve Local Aquaculture Growth and Environment (ENSILAGE)
Formas (2016-20057), 2016-01-01 -- 2020-12-31.
Driving Forces
Sustainable development
Infrastructure
Chalmers Infrastructure for Mass spectrometry
Subject Categories
Food Engineering
Roots
Basic sciences
Areas of Advance
Life Science Engineering (2010-2018)
DOI
10.1007/s11947-022-02870-9