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Start Over Author "H., Rehbein" Journal food chemistry
3 results on '"H., Rehbein"'

1. Chemical composition of some tissues of the Antarctic fish Notothenia rossii marmorata, fischer 1885

Author

J. Oehlenschläger and H. Rehbein

Subjects
Krill, biology, Stomach, Phosphorus, Euphausia, chemistry.chemical_element, General Medicine, biology.organism_classification, Analytical Chemistry, Notothenia rossii, chemistry.chemical_compound, medicine.anatomical_structure, Animal science, Biochemistry, chemistry, Dry weight, medicine, Dry matter, Fluoride, Food Science
Abstract

Muscle, liver, stomach, intestinal tract and pyloric caeca of the Antarctic fish Notothenia rossii marmorata , Fischer 1885, were analysed for dry matter, crude protein, carbohydrate, total lipids, ash, chloride, phosphorus and fluoride. It was found that the levels of these classes of substance varied considerably within ten fishes of a pre-spawning community. The highest level of protein was found in the stomach (80·8% mean value on a dry weight basis) and the lowest in the liver (39·6%); for total lipids in the liver and stomach the situation was reversed with the relevant figures being 40·8% and 11·27%, respectively. The pyloric caeca showed a maximum of ash content (6·34%), whilst only 3·92% was found in the liver. The liver was extremely rich in carbohydrates (8·22%) whilst, at 1·64%, the muscle contained least. Although N. rossii marmorata mainly feeds on the fluoride-containing krill ( Euphausia superba Dana ), the tissues investigated showed only a low level of fluoride (10–40 ppm).

Published
1982
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2. Detection of antibacterial activity of an enzymatic hydrolysate generated by processing rainbow trout by-products with trout pepsin.

Author

Wald M, Schwarz K, Rehbein H, Bußmann B, and Beermann C

Subjects
Animals, Food Handling, Anti-Bacterial Agents chemistry, Oncorhynchus mykiss microbiology, Pepsin A chemistry
Abstract

Trout by-product hydrolysates, generated using trout pepsin, were characterized and studied in terms of their antibacterial effects against food contaminants and fish farming pathogens. After a hydrolysis time of 25 min, the hydrolysates demonstrated inhibitory activity against several gram-positive and gram-negative bacteria. The degree of hydrolysis (DH) was found to exert a considerable influence on antibacterial activity, with a significant increase in the observed inhibitory effect at the beginning of hydrolysis. The highest antibacterial activity was obtained at a DH of 30% (enzyme/protein ratio 0.04 U/mg of protein, enzyme activity 6.5 U/mg protein, hydrolysis conditions 37°C, pH 3.0). The highest antibacterial activity detected was against the fish farming bacteria Flavobacterium psychrophilum and Renibacterium salmoninarum, with minimal inhibition concentrations of 2mg/ml and 5mg/ml, respectively. The amino acid determination of the hydrolysate (DH 30%) revealed that lysine, leucine, alanine, arginine, glycine, aspartic acid and glutamic acid residues represented the major amino acids., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Published
2016
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3. Differentiation of Sparidae species by DNA sequence analysis, PCR-SSCP and IEF of sarcoplasmic proteins.

Author

Schiefenhövel K and Rehbein H

Subjects
Animals, Fish Proteins genetics, Perciformes classification, Quality Control, Fish Proteins chemistry, Food Contamination analysis, Isoelectric Focusing methods, Perciformes genetics, Polymerase Chain Reaction methods, Polymorphism, Single-Stranded Conformational, Seafood analysis
Abstract

The increasing global trade of fishery and aquaculture products makes it necessary to develop methods for species identification in case of fish fillets or other highly processed seafood with external morphological characteristics (e.g. gills, fins) of the original fish being removed. Species identification methods based on DNA- or protein-analysis, like DNA sequencing of PCR products, PCR-SSCP (polymerase chain reaction - single strand conformation polymorphism), and isoelectric focusing (IEF) of water-soluble proteins of fish fillet were applied successfully to distinguish between various sparid species including Sparus aurata, Spondyliosoma cantharus, Boops boops, Acanthopagrus bifasciatus, Argyrops spinifer, Pagellus bogaraveo and Lithognathus mormyrus of the family Sparidae available on European markets. Indication of the presence of parvalbumins in light muscle of all of the studied species is presented by the location of heat-stable proteins in the anodic range of the IEF gels., (Copyright © 2012 Elsevier Ltd. All rights reserved.)

Published
2013
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