Impact of Processing Technology on Macro- and Micronutrient Profile of Protein-Enriched Products from Fish Backbones
Artikel i vetenskaplig tidskrift, 2021

Impacts of processing technology (mechanical separation and pH-shift processing) on protein recovery from salmon, herring and cod backbones and the content of macro- and micronutrients in the recovered protein enriched products were investigated. Mechanical separation led to higher protein recovery compared with the pH-shift process and using both techniques, recovery ranked the species as herring > salmon > cod. However, the pH-shift process up-concentrated protein from herring and salmon backbones more efficiently than mechanical separation by removing more fat and ash. This consequently reduced n-3 PUFA and vitamin D content in their protein isolates compared with the backbones and mechanically separated meat (MSM). Cod protein isolate, however, contained higher levels of these nutrients compared with MSM. Mechanical separation concentrated vitamins E and C in salmon MSM but not for cod and herring. Opposite, pH-shift processing reduced levels of these two vitamins for cod and herring backbones, while vitamins D and C were reduced for salmon. For minerals, selenium, calcium, magnesium, and potassium were lower in protein isolates than MSM, while copper, zinc, iron and manganese were similar or higher. Overall, there is a major potential for upcycling of fish backbones to food ingredients, but processing technology should be carefully balanced against the desired nutrient profile and final application area.

mechanical separation

seafood

pH-shift method

by-products

nutritional value

Författare

Mehdi Abdollahi

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Haizhou Wu

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Ingrid Undeland

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Foods

23048158 (eISSN)

Vol. 10 5 950

Optimal utilization of seafood side-streams through the design of new holistic process lines (WASEABI)

Europeiska kommissionen (EU) (EC/H2020/837726), 2019-05-01 -- 2023-04-30.

Ämneskategorier

Biokemi och molekylärbiologi

Livsmedelsteknik

Bioprocessteknik

DOI

10.3390/foods10050950

PubMed

33925306

Relaterade dataset

URI: https://www.mdpi.com/2304-8158/10/5/950

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Senast uppdaterat

2021-06-29