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Effect of pH on Protein Extraction from Mahaleb Kernels and Functional Properties of Resulting Protein Concentrate

  • Melih Güzel , Mehtap Çelik and Metin Yildirim ORCID logo EMAIL logo
Published/Copyright: June 12, 2019

Abstract

The aims of this research were to examine the effect of pH on extraction of proteins from mahaleb (Prunus mahaleb L.) kernels, and to investigate the functional properties of resulting protein concentrate. The optimum pH values for the protein extraction and precipitation were determined as 10.0 and 4.5, respectively. The protein concentrate containing 92.73% dry matter, 6.29% ash, 6.02% carbohydrate, 1.42% fat and 73.11% protein was produced by using these extraction and precipitation pH values. Water-holding capacity, oil-holding capacity and the least gelling concentration of the protein concentrate were 2.81 g water/g, 1.66 g oil/g and 12%, respectively. Moreover, emulsifying activity and stability indices, foaming capacity and stability of protein concentrate were 27.21 m2/g, 81.05 min, 43.75% and 71.33% (after 30 min), respectively. The functional and chemical properties of the protein concentrate indicate that it may find application as functional ingredient for various food products.

Acknowledgements

This project was supported by Tokat Gaziosmanpaşa University Scientific Research Projects Fund (Project No: 2009/59).

  1. Disclosure statement: No potential conflict of interest was reported by the authors.

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Received: 2018-11-12
Revised: 2019-03-27
Accepted: 2019-05-27
Published Online: 2019-06-12

© 2019 Walter de Gruyter GmbH, Berlin/Boston

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