Biological quality of fermented fish offal and chicken by-products
The biological quality of fermented animal by-products prepared from fish and chicken offal was evaluated. A quality index (QI) based on analyses of a few important free amino acids and their corresponding biogenic amines was given. A group separation method based on ion exchange chromatography was...
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Scientific Agricultural Society of Finland
1995-01-01
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Series: | Agricultural and Food Science |
Online Access: | https://journal.fi/afs/article/view/72609 |
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doaj-53988dc36fb1484db2a3c91ef041897d2020-11-24T21:08:00ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951995-01-0141Biological quality of fermented fish offal and chicken by-productsT. Mikael Lassén0Division of Animal Nutrition, Department of Animal Science and Animal Health, Royal Veterinary and Agricultural University, Bülowsvej 13, DK-1870 Frederiksberg C., DenmarkThe biological quality of fermented animal by-products prepared from fish and chicken offal was evaluated. A quality index (QI) based on analyses of a few important free amino acids and their corresponding biogenic amines was given. A group separation method based on ion exchange chromatography was found suitable for isolating and purifying amines and amino acids in biological samples. Quality was evaluated in samples fermented with different starter cultures, inoculation sizes and substrate levels. Slow or incomplete fermentation led to the accumulation of biogenic amines, especially tyramine, and resulted in a low QI. Fast initial and continuous stable fermentation for four weeks resulted in low concentrations of biogenic amines and high concentrations of free amino acids and consequently a high QI. The alanine concentration was considered to be a useful tool for estimating proteolysis, and QI related to changes in alanine concentration, lactic acid production and redox potential were considered to give the most useful estimation of the biological quality of fermented fish offal and poultry waste.https://journal.fi/afs/article/view/72609 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. Mikael Lassén |
spellingShingle |
T. Mikael Lassén Biological quality of fermented fish offal and chicken by-products Agricultural and Food Science |
author_facet |
T. Mikael Lassén |
author_sort |
T. Mikael Lassén |
title |
Biological quality of fermented fish offal and chicken by-products |
title_short |
Biological quality of fermented fish offal and chicken by-products |
title_full |
Biological quality of fermented fish offal and chicken by-products |
title_fullStr |
Biological quality of fermented fish offal and chicken by-products |
title_full_unstemmed |
Biological quality of fermented fish offal and chicken by-products |
title_sort |
biological quality of fermented fish offal and chicken by-products |
publisher |
Scientific Agricultural Society of Finland |
series |
Agricultural and Food Science |
issn |
1459-6067 1795-1895 |
publishDate |
1995-01-01 |
description |
The biological quality of fermented animal by-products prepared from fish and chicken offal was evaluated. A quality index (QI) based on analyses of a few important free amino acids and their corresponding biogenic amines was given. A group separation method based on ion exchange chromatography was found suitable for isolating and purifying amines and amino acids in biological samples. Quality was evaluated in samples fermented with different starter cultures, inoculation sizes and substrate levels. Slow or incomplete fermentation led to the accumulation of biogenic amines, especially tyramine, and resulted in a low QI. Fast initial and continuous stable fermentation for four weeks resulted in low concentrations of biogenic amines and high concentrations of free amino acids and consequently a high QI. The alanine concentration was considered to be a useful tool for estimating proteolysis, and QI related to changes in alanine concentration, lactic acid production and redox potential were considered to give the most useful estimation of the biological quality of fermented fish offal and poultry waste. |
url |
https://journal.fi/afs/article/view/72609 |
work_keys_str_mv |
AT tmikaellassen biologicalqualityoffermentedfishoffalandchickenbyproducts |
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1716761279480201216 |