Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1)

Quality of Protein Isolates and Hydrolysates from Baltic Herring (Clupea harengus membras) and Roach (Rutilus rutilus) Produced by pH-Shift Processes and Enzymatic Hydrolysis




Julkaisun tekijät: Kakko Tanja, Damerau Annelie, Nisov Anni, Puganen Anna, Tuomasjukka Saska, Honkapää Kaisu, Tarvainen Marko, Yang Baoru

Kustantaja: MDPI

Julkaisuvuosi: 2022

Journal: Foods

Tietokannassa oleva lehden nimi: FOODS

Lehden akronyymi: FOODS

Volyymi: 11

Julkaisunumero: 2

Sivujen määrä: 22

DOI: http://dx.doi.org/10.3390/foods11020230

Verkko-osoite: https://www.mdpi.com/2304-8158/11/2/230

Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/174815490


Tiivistelmä
Fractionation is a potential way to valorize under-utilized fishes, but the quality of the resulting fractions is crucial in terms of their applicability. The aim of this work was to study the quality of protein isolates and hydrolysates extracted from roach (Rutilus rutilus) and Baltic herring (Clupea harengus membras) using either pH shift or enzymatic hydrolysis. The amino acid composition of protein isolates and hydrolysates mostly complied with the nutritional requirements for adults, but protein isolates produced using pH shift showed higher essential to non-essential amino acid ratios compared with enzymatically produced hydrolysates, 0.84-0.85 vs. 0.65-0.70, respectively. Enzymatically produced protein hydrolysates had a lower total lipid content, lower proportion of phospholipids, and exhibited lower degrees of protein and lipid oxidation compared with pH-shift-produced isolates. These findings suggest enzymatic hydrolysis to be more promising from a lipid oxidation perspective while the pH-shift method ranked higher from a nutrient perspective. However, due to the different applications of protein isolates and hydrolysates produced using pH shift or enzymatic hydrolysis, respectively, the further optimization of both studied methods is recommended.

Ladattava julkaisu

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.




Last updated on 2022-06-07 at 13:03