Volume 56, Issue 10 p. 5139-5149
Original article

Total phenolic content, antioxidant activity, shelf-life and reconstitutability of okra seeds powder: influence of milling and sieving processes

Idriss Miganeh Waiss

Idriss Miganeh Waiss

Laboratoire de Génie des Procédés Industriels, Chaire UNESCO – ENSP, Université Marien Ngouabi, Brazzaville, BP69 Republic of the Congo

LIBio (Laboratoire d’Ingénierie des Biomolécules), Université de Lorraine, Nancy, F-54000 France

Institut des Recherche Médicinales, Centre d’Etudes et de Recherche de Djibouti, Route de l’Aéroport, Djibouti, BP 486 Republic of Djibouti

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André Kimbonguila

André Kimbonguila

Laboratoire de Génie des Procédés Industriels, Chaire UNESCO – ENSP, Université Marien Ngouabi, Brazzaville, BP69 Republic of the Congo

LIBio (Laboratoire d’Ingénierie des Biomolécules), Université de Lorraine, Nancy, F-54000 France

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Fatouma Mohamed Abdoul-Latif

Fatouma Mohamed Abdoul-Latif

Institut des Recherche Médicinales, Centre d’Etudes et de Recherche de Djibouti, Route de l’Aéroport, Djibouti, BP 486 Republic of Djibouti

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Laurette Brigelia Nkeletela

Laurette Brigelia Nkeletela

Laboratoire de Génie des Procédés Industriels, Chaire UNESCO – ENSP, Université Marien Ngouabi, Brazzaville, BP69 Republic of the Congo

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Joël Scher

Joël Scher

LIBio (Laboratoire d’Ingénierie des Biomolécules), Université de Lorraine, Nancy, F-54000 France

Contribution: Conceptualization (equal), Project administration (equal), Supervision (equal)

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Jérémy Petit

Corresponding Author

Jérémy Petit

LIBio (Laboratoire d’Ingénierie des Biomolécules), Université de Lorraine, Nancy, F-54000 France

*Correspondent: E-mail: [email protected]

Contribution: Methodology (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal)

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First published: 05 May 2021
Citations: 1

Summary

This study aimed at relating phytochemical properties (total phenolic content and antioxidant activity), reconstitutability (water absorption capacity and water solubility index) and preservation ability (water activity) of okra seed powders to physicochemical properties (particle size distribution and moisture content). Okra seed powders were produced at three different milling frequencies, and then, each obtained sample was sieved with 180, 315 and 500 μm sieves. An increased milling frequency resulted in lower median particle size, water activity and moisture content. The maximal water activity and moisture content were 0.583 ± 0.010 and 12.07 ± 0.05% (w/w), respectively, showing the good preservation ability of okra seed powders. Total phenolic content and antioxidant activity were raised at higher milling frequency. Reconstitutability was significantly enhanced at higher milling frequency and/or for smaller median particle size. Thus, the successive milling and sieving process was successful in improving physicochemical and functional properties of okra seed powders, especially for smaller particles.

Conflict of interest

The authors declare that they have no conflict of interest.

Peer review

The peer review history for this article is available at https://publons.com/publon/10.1111/ijfs.15099.

Data availability statement

Research data are not shared.