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Safflower protein: extraction, nutritional quality, and techno-functional properties.

Alejandro Escobedo1,2, Janet A Gutierrez-Uribe1, Ivan Luzardo-Ocampo1,2

  • 1School of Engineering and Sciences, Tecnológico de Monterrey, Monterrey, Mexico.

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Summary

Safflower meal, a protein-rich by-product, can be processed into valuable protein ingredients using alkali extraction. This method enhances nutritional quality and techno-functional properties for potential food applications.

Keywords:
Carthamus tinctorius Lemulsion propertiesfoaming propertiesmealplant-based proteins

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Area of Science:

  • Agricultural Science
  • Food Science
  • Biochemistry

Background:

  • Safflower (Carthamus tinctorius L.) is primarily cultivated for oil and pigments.
  • Defatted safflower meal, a high-protein byproduct, remains underutilized in food applications.
  • Developing novel protein ingredients from plant sources is crucial for sustainable food systems.

Purpose of the Study:

  • To review the alkali extraction method for producing safflower protein ingredients from safflower meal.
  • To assess the impact of alkali extraction on the chemical composition, nutritional quality, and techno-functional properties of safflower protein.
  • To identify research gaps and future directions for safflower protein utilization.

Main Methods:

  • Systematic review of literature on safflower protein extraction and characterization.
  • Alkali extraction followed by isoelectric precipitation.
  • Analysis of chemical composition, nutritional quality, and techno-functional properties.

Main Results:

  • Alkali extraction effectively reduces antinutritional compounds like matairesinol monoglucoside and 2-hydroxyarctiin.
  • Safflower protein demonstrates superior levels of leucine, valine, and methionine compared to other plant proteins.
  • The protein shows promising emulsifying and foaming stabilities and is not identified as a common allergen.

Conclusions:

  • Alkali extraction is a viable method for producing high-quality safflower protein ingredients.
  • Further research is needed to fully characterize digestibility and nutritional quality using standardized protocols.
  • Expanded research and sensory evaluations are necessary to ensure consumer acceptance and facilitate broader food product development.