A range of small, long-life ultrasonic fish tags is described and their use illustrated with an improved system of fixed hydrophone tracking stations. A boat-mounted hydrophone system giving bearing and range estimations for use in open-water fish tracking is described together with a portable hand-held unit for simple location of tagged fish in rivers, etc. Typical results based on intensive use of these systems are given.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1017/s0308211300002590 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mild ultrasound-assisted alkali de-esterification modified pectins: Characterization and structure-activity relationships in immunomodulatory effects.
Ultrason Sonochem
January 2025
College of Biomass Science and Engineering and Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China. Electronic address:
Apple pectin (AP), a well-established dietary fiber, offers significant health benefits, particularly in immunomodulation. However, the structure-activity relationship (SAR) in this context remains poorly understood. This study aimed to elucidate the impact of varying degrees of esterification (DE) on AP's SAR in immunomodulatory activity.
View Article and Find Full Text PDFCharacterization of yellowfin tuna (Thunnus albacares) skin gelatin extracted by bromelain hydrolysis and ultrasound pre-treatment.
J Food Sci
January 2025
Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Gadjah mada University, Yogyakarta, Indonesia.
Article Synopsis
- The study explores using hydrolysis of yellowfin tuna skin waste as an eco-friendly method to produce gelatin, and highlights ultrasound pre-treatment as a way to enhance extraction efficiency.
- Factors like ultrasound amplitude, pre-treatment duration, enzyme concentration, and hydrolysis time were tested to determine optimal conditions for maximizing yield and quality of gelatin, which resulted in specific optimal parameters.
- The final gelatin showed promising properties such as high viscosity, gel strength, emulsifying abilities, antioxidant activity, and good digestibility, marking a step towards sustainable gelatin production from fish waste.
[Determination of 12 halogenated organic pollutants in edible fish by ultra performance liquid chromatography-high resolution mass spectrometry combined with ultrasound-assisted extraction and gel permeation chromatography purification].
Se Pu
January 2025
Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
Halogenated organic pollutants (HOPs) have attracted considerable attention owing to their persistence, bioaccumulation, and toxicity. The development of methods to detect HOPs in fish is challenging owing to the compositional complexity of fish matrices, which contain high levels of lipids and relatively low concentrations of HOPs. In addition, the lipophilicity of most HOPs renders their extraction difficult.
View Article and Find Full Text PDFInnovative CO-NBs-assisted ultrasonication for the phytochemical extraction of peanut (Arachis hypoga) shells: Synthesis and characterization of CO-nanobubbles.
Ultrason Sonochem
January 2025
College of Food Science and Technology/National R&D Branch Center for Conventional Freshwater Fish Processing (Wuhan), Huazhong Agricultural University, Wuhan 430070, PR. China. Electronic address:
This study was designed to obtain the maximum extraction yield of peanut shell (PS) polyphenols using a novel carbon dioxide nanobubbles (CO-NBs) assisted ultrasonic extraction method. CO-NBs were generated in distilled water with a self-developed high-pressure nano-jet homogenization method and characterized by size, zeta potential and transmission electron microscopy (TEM). The obtained nanobubble's mean size and zeta potential were 229.
View Article and Find Full Text PDFFabrication, modification, interaction mechanisms, and applications of fish gelatin: A comprehensive review.
Int J Biol Macromol
December 2024
College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Zhanjiang 524008, China. Electronic address:
Article Synopsis
- Fish gelatin (FG) is a natural biopolymer derived from aquatic sources, considered a viable alternative to mammalian gelatins but has limitations due to its mechanical and gelling properties.
- Various extraction techniques and modification strategies have been explored to improve FG's properties, including traditional methods and newer technologies like ultrasonic-assisted extraction.
- Modified FG has potential applications in food, cosmetics, and pharmaceuticals, such as foaming agents, emulsifiers, and drug delivery systems, although more research is needed for developing advanced forms like tough gels and hydrogels.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!