The new freeze-dry method, which requires less energy and processing time, was developed by scientists at the University of Alaska-Fairbanks (UAF) in collaboration with Peter Bechtel, a food technologist at the Agricultural Research Service (ARS) Subarctic Agricultural Research Unit (SARU) in Kodiak, Alaska. ARS is USDA's principal intramural scientific research agency.
One of the goals of the study was to set up a process that would produce freeze-dried cubes with less than 10 percent moisture, according to Chuck Crapo, seafood technology specialist with the UAF Marine Advisory Program. This was achieved by manipulating temperature and time.
Scientists created a process that took only nine hours by raising the temperature from minus 40 degrees Fahrenheit to 32 degrees Fahrenheit. Traditional processing can take 20 hours or more.
The new method removed 97 percent of the moisture from fillets of Alaska's most abundantly harvested Pacific salmon species—pink, sockeye and chum. The freeze-dried salmon cubes maintained their original color, rehydrated quickly and shrank less in a shorter period of time than food processed by traditional freeze-drying.
Such products could offer healthful alternatives for less desirable portions of fish muscle, according to Bechtel. For example, when the salmon gets too close to spawning season, its muscle quality declines. Edible portions of the meat, which are then considered byproducts, could be freeze-dried.
Cubes made from salmon are rich in omega-3 fatty acids and could eventually offer a healthful option for people who want to increase seafood in their diets as recommended by the new Dietary Guidelines for Americans. Salmon cubes could be used to make tasty snacks, salad toppings and ready-to-eat soups.
Findings from this research were published in the Journal of Food Science in 2010.
Read more about this research in the August 2011 issue of Agricultural Research magazine.
Forest Management Yields Higher Productivity through Biodiversity
14.10.2016 | Technische Universität München
Farming with forests
23.09.2016 | University of Illinois College of Agricultural, Consumer and Environmental Sciences (ACES)
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
26.10.2016 | Materials Sciences
26.10.2016 | Health and Medicine
26.10.2016 | Physics and Astronomy