• Fish Protein May Be Next Big Wave


      By Nathan Gray Nutra Ingredients USA

      There is great potential to develop novel, marketable, omega-3 rich functional food products from inexpensive sources such as fish protein isolate, according to new research.

      Inexpensive fish protein isolate can make omega-3 rich functional foods: Researchers

      The study – published in LWT - Food Science and Technology – reports that fish protein isolated from inexpensive fish could provide a new basis for the incorporation of omega-3 polyunsaturated fatty acids into functional foods. The researchers, led by Jacek Jaczynski, an associate professor at West Virginia University, USA, demonstrated that is feasible "to develop functional food products made from muscle protein isolate recovered frrom whole gutted fish."

      “Since the protein isolate in the present study is recovered from fish and used in a formulated food product, it is a logical vehicle for increasing the consumption of omega-3 PUFAs and concurrent reduction of sodium without the need for dietary supplements in a pill or capsule form,” explained Jaczynski and his colleagues.

      The team produced the functional foods using fish protein combined with omega-3 fatty acids and a potassium chloride salt replacer. They found that the end product was “nutritionally enhanced with omega-3 PUFAs, had reduced sodium and increased potassium; while the colour and texture properties were good and gelation properties were improved.”

      Jaczynski and his team said that although the results of their study “point toward the potential for novel, marketable functional food products developed from inexpensive sources”, further testing and refining of the sensory and stability properties of the products are still required.

      Functional fish

      Jaczynski explained that functional foods “are food products that contain added, technologically developed ingredients with specific health benefits.” The researchers noted that food products nutrified with omega-3 PUFAs “provide a means to achieve desired biochemical effects of these nutrients without the ingestion of dietary supplements, medications or a major change in dietary habits.”

      In addition to the addition of omega-3 fatty acids, there has been some scientific support for the benefits of fish protein itself. A recent study published in the Journal of Functional Foods (reported here ) found that protein from blue whiting fish could help to promote the production of gut hormones associated with suppressing appetite, and may aid weight management.

      Study details

      Fish protein isolate was used as a main ingredient in heat-set gels made with omega-3 PUFAs oils (flaxseed, algae, fish, krill, and blend) and potassium chloride (KCl)-based salt substitute.

      “The overall objective of this study was to determine physicochemical properties of a functional food products developed with omega-3 PUFAs and salt substitute using muscle protein isolate recovered ... from whole gutted rainbow trout,” said the researchers.

      The team reported that colour properties were improved in all cases apart from when krill or algae oil was added – whilst texture profile analysis “showed that omega-3 PUFAs generally did not affect texture of trout protein gels.”

      They revealed that addition of omega-3 PUFAs oil also improved heat-induced protein gelation. Elastic modulus was found to increase when all omega-3 PUFAs except krill oil were added.

      “The functional food products developed from fish protein isolate were nutritionally enhanced with omega-3 PUFAs, had reduced sodium and increased potassium; while the colour and texture properties were good and gelation properties were improved,” concluded Jaczynski and his team.

      Source: LWT - Food Science and Technology
      Volume 48, Issue 1 , Pages 89–95, doi: 10.1016/j.lwt.2012.02.018
      “Functional food products made from fish protein isolate recovered with isoelectric solubilization/precipitation”
      Authors: R. Tahergorabi, S.K. Beamer, K.E. Matak, J. Jaczynski

      Source: http://www.nutraingredients-usa.com/...%2BText%2BNews
      Comments 11 Comments
      1. Swordfish II's Avatar
        Swordfish II -
        There were 11 instances of the word "functional" in this article. I see that bs word has made the transition from rediculous training methods to food now.
      1. sae2110's Avatar
        sae2110 -
        Functional Food=Probably Tastes Like A$$. But most protein supplements do anyways....
      1. UKNoko's Avatar
        UKNoko -
        I can foresee this used in fast food industry akin to pink slime. Just add some artificial flavouring and we'll be good to go!
      1. Spaniard's Avatar
        Spaniard -
        Originally Posted by Swordfish II View Post
        There were 11 instances of the word "functional" in this article. I see that bs word has made the transition from rediculous training methods to food now.
        My thoughts exactly
      1. Whacked's Avatar
        Whacked -
        LOLOL @ Swordfish's comments. So true!
      1. aLinux's Avatar
        aLinux -
        Yeah, and they'll most likely use the the most cost effective (for them) and LARGEST fish they can catch, a (whale) so they drown us in mercury poisoning and whatever else, no thanks. God, I'm pissy today.
      1. ka0tik's Avatar
        ka0tik -
        Not to mention this would create a bigger demand on our wild fish supply that has been dwindling for years (special thanks to Japan).
      1. UKNoko's Avatar
        UKNoko -
        Whale is not a fish...
      1. Vengeance187's Avatar
        Vengeance187 -
        Originally Posted by ka0tik View Post
        Not to mention this would create a bigger demand on our wild fish supply that has been dwindling for years (special thanks to Japan).
        They'll probably use the fish meat that's left over after extracting fish oil.
      1. v4lu3s's Avatar
        v4lu3s -
        I am thinking farmed fish like tilapia, catfish, rainbow trout and salmon will be the source due to low costs.
      1. UKNoko's Avatar
        UKNoko -
        Originally Posted by v4lu3s View Post
        I am thinking farmed fish like tilapia, catfish, rainbow trout and salmon will be the source due to low costs.
        Probably... Anyway another cheap food that's gonna raise our health care bills...

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