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Effects of Weak Acids on the Microbiological, Nutritional and Sensory Quality of Baltic Herring (Clupea harengus membras)

Mattila Pirjo; Kakko Tanja; Yang Baoru; Hiidenhovi Jaakko; Hopia Anu; Mäkinen Sari; Logrén Nora; Rintala Nanna; Välimaa Anna-Liisa

Effects of Weak Acids on the Microbiological, Nutritional and Sensory Quality of Baltic Herring (Clupea harengus membras)

Mattila Pirjo
Kakko Tanja
Yang Baoru
Hiidenhovi Jaakko
Hopia Anu
Mäkinen Sari
Logrén Nora
Rintala Nanna
Välimaa Anna-Liisa
Katso/Avaa
foods-11-01717-v2.pdf (1.217Mb)
Lataukset: 

MDPI
doi:10.3390/foods11121717
URI
https://www.mdpi.com/2304-8158/11/12/1717
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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2022081154182
Tiivistelmä
Baltic herring (Clupea harengus membras) pickled in vinegar is a common product in the Nordic countries. Other weak acids are used to cook and preserve fish in other food cultures. The aim of this study was to evaluate the potential of weak acids to produce safe and nutritious pickled fish products with varying sensory properties. The influence of acetic, citric, lactic, malic, and tartaric acids on the preservability and quality of pickled and marinated Baltic herring was studied by measuring microbiological quality, pH, chemical composition, and lipid oxidation and by sensory profiling. Pickling with these acids with pH levels of 3.7-4.2 resulted in pickled Baltic herring products with high microbiological quality. The results of the chemical analysis of the samples indicated that pickling and storage on marinade influenced the chemical composition of fish. The most significant changes in chemical composition were the increase in moisture and decrease in protein content of the samples during storage. Fat content decreased during the storage period in acetic acid and malic acid samples. All tested acids inhibited lipid oxidation for one month, but at three and four month time points, the content of oxidation products increased except in the samples pickled with tartaric acid. The highest oxidation level was observed in the case of citric acid and the lowest with tartaric acid. The results indicate that replacing acetic acid with other weak acids frequently used in the food industry results in pickled and marinated fish products with novel and milder sensory profiles.
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