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Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
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Properties of bone from Catfish heads and frames.

Peter J Bechtel1, Michael A Watson1, Jeanne M Lea1

  • 1Food Processing and Sensory Quality Research Unit, Agricultural Research Center, Southern Regional Research Center USDA New Orleans Louisiana.

Food Science & Nutrition
|April 27, 2019
PubMed
Summary

This study explored methods to purify catfish bone, yielding valuable protein and mineral fractions. These processed catfish bones offer potential as novel food and feed ingredients.

Keywords:
analysisbone compositioncatfish by‐productsfish bone

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Area of Science:

  • Food Science
  • Biochemistry
  • Materials Science

Background:

  • Catfish processing generates significant frame and head waste.
  • Valorization of fish byproducts is crucial for sustainable aquaculture.
  • Limited research exists on purified catfish bone composition and extraction.

Purpose of the Study:

  • To evaluate methods for producing purified catfish bone fractions.
  • To determine the chemical composition of these purified bone fractions.
  • To assess the potential of catfish bone for value-added applications.

Main Methods:

  • Enzymatic digestion and high-pressure water jets were used to remove non-bone tissues from catfish frames.
  • Catfish heads were processed using enzymatic digestion and sieving.
  • Proximate analysis (ash, protein, lipid) and elemental analysis (Ca, P, Mg, Mn, Zn, Ni) were performed.

Main Results:

  • Purified catfish frame bone contained 54-62% ash, 33-35% protein, and 2-9% lipid.
  • Purified catfish head bone contained 51% ash, 38% protein, and 7% lipid.
  • Processed bone showed increased calcium (21-25%), phosphorus (10-11%), and hydroxyproline (7-8% of amino acids).

Conclusions:

  • Both enzymatic and high-pressure water methods effectively produced purified catfish bone fractions.
  • Catfish bone is a rich source of minerals and protein, particularly hydroxyproline.
  • The findings support the development of new food and feed ingredients from catfish bone waste.