Enzymatic conversion of date fruit fiber concentrates into a new product enriched in antioxidant soluble fiber

Date fiber concentrate; Date fruit; Enzymatic hydrolysis; Prebiotic oligosaccharides; Soluble dietary fiber; Fibers; Fruits; Hydrolysis; Oligosaccharides; Antiradical activities; Date fruits; Insoluble dietary fibers; Prebiotics; Technological applications; Xylo- oligosaccharides

Abstract :

[en] Soluble dietary fiber (SDF) has got increasing interest because of its prebiotic effects and technological applications. The enzymatic hydrolysis is an effective treatment to convert insoluble dietary fiber (IDF) into SDF. Date fiber concentrate (DFC) is a very good source of dietary fiber, but its IDF/SDF ratio is very high. In this study an enzymatic treatment has been optimized to enrich DFC in SDF: Viscozyme® L from Novozymes A/S at 2.38 mL enzyme/100 mL reaction volume, in a solid/liquid ratio 1 g/35 mL, at 55 °C during 30–60 min. In these conditions, the amount of SDF increased from 1.8–6.3 to 5.4 g/100 g, and the ratio IDF/SDF changed from 19 to 2–3. In the SDF, besides an increase in the antiradical activity, gluco-, manno-, and xylo-oligosaccharides have been identified. Their molecular weights varied in a wide range, depending of hydrolysis duration, which suggests that this enzymatic treatment could be a promising process for obtaining tailor-made prebiotic oligosaccharides. © 2016 Elsevier Ltd

Disciplines :

Food science

Author, co-author :

Mrabet, Abdessalem ; Université de Liège - ULiège > Gembloux Agro-Bio Tech

Rodríguez-Gutiérrez, G.; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra de Utrera Km 1, Sevilla, Spain

Rubio-Senent, F.; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra de Utrera Km 1, Sevilla, Spain

Hamza, H.; Arid & Oases Cropping Laboratory, Arid Area Institute, Medenine, Tunisia

Rodríguez-Arcos, R.; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra de Utrera Km 1, Sevilla, Spain

Guillén-Bejarano, R.; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra de Utrera Km 1, Sevilla, Spain

Sindic, Marianne ; Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes

Jiménez-Araujo, A.; Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitario Pablo de Olavide, Edificio 46, Ctra de Utrera Km 1, Sevilla, Spain

Language :

English

Title :

Enzymatic conversion of date fruit fiber concentrates into a new product enriched in antioxidant soluble fiber

Publication date :

2017

Journal title :

LWT - Food Science and Technology

ISSN :

0023-6438

eISSN :

1096-1127

Publisher :

Academic Press

Volume :

Pages :

727-734

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://www.sciencedirect.com/science/article/pii/S0023643816306120?via%3Dihub

Available on ORBi :

since 08 October 2018

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