Characterization and Valorization of Dietary Fibre Concentrate from Parthenocarpic Date Fruits


  •   Hammadi Hamza

  •   Monia Jemni

  •   Ali Bazmi

  •   Ali Bazmi

  •   Tarek Tombari

  •   Kameleddine Naggaz


Parthenocarpic date fruits are good sources of antioxidant and fibre, which could be changed into valuable by-products. There is no attempt to use it in technological processes and could provide a natural additive to enhance the quality of the product. In this study, fibre concentrate from partenocarpic dates (FCPD) was extracted, dried, and characterized. Two drying techniques, namely oven and freeze drying, were carried out, and then the FCPD were characterized. Thereafter, its ability to substitute flour in muffins was studied.

The freeze-drying gave the highest yield of FCPD revealing lignin richness but cellulose and hemicellulose insufficiency. Drying techniques gave similar FCPD WHC and OHC but antioxidant capacity was higher in the case of freeze-dried fibre. Electronic microscopy showed that the more FCPD was introduced in the flour, the more the muffin crumb contained disrupted matrices. This could enhance the muffin freshness by improving the moisture retention. Moreover, although flour substitution by FCPD increased muffin volume and its OHC value, its WHC, moisture, mineral and sugar contents were not affected. Calorific value, phenol content and antioxidant activity were greater in the case of muffins with 5% of freeze-dried FCPD. Sensory analyses showed that fibre-enriched muffins had good scores as the control ones.

In this study, we used oasis raw materials with good source of fibres and antioxidant capacity that could be used in the production of high value-added foods. Additionally, the research demonstrated that freeze-dried FCPD flour fortification enhances the physicochemical characteristics of the muffin. The parthenocarpic date fruits is an agricultural residue with interested chemical and functional properties that could be undertaken in food process industries. 

Keywords: Electron microscopy, Fibre concentrate, Muffin properties, Parthenocarpic dates


S.M.H. Mortazavi, F. Azizollahi, N. Moalemi, “Some Quality Attributes and Biochemical Properties of Nine Iranian Date (Phoenix dactylifera L.) Cultivars at Different Stages of Fruit Development,” Int. J. Hortic. Sci. Technol., vol. 2, no. 2, pp.161-171, October 2015.

H. Hamza, A. Mrabet, A. Jiménez-Araujo, “Date palm Parthenocarpic Fruits (Phoenix dactylifera L.): Chemical Characterization, Functional Properties and Antioxidant Capacity in Comparison with Seeded Fruits,” Scientia Horticulturae, vol. 211, pp. 352-357, November 2016.

A.A. Jaradat. “Biodiversity, genetic diversity, and genetic resources of date palm,” In: Date Palm Genetic Resources, Cultivar Assessment, Cultivation Practices and Novel Products, J.M. Al-Khayri, M.J. Shri, V.J. Dennis, (eds.), Springer, Dordrecht, 2014, pp. 19-71.

N. Grigelmo-Miguel, E. Carreras-Boladeras, O. Martin-Belloso, “Development of high-fruit-dietary-fiber muffins,” Eur. Food Res. Tech., vol. 210, pp. 123-128, December 1999.

C. Borchani, S. Besbes, C. Blecker, M. Masmoudi, R. Baati, H. Attia, “Chemical properties of 11 date cultivars and their corresponding Fiber extracts”. Afr. J. Biotechnol., vol. 9, 4096-4105, 2010.

P.J. Van Soest, J.B. Robertson, B.A. Lewis, J. Dairy, “Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition”. J. Dairy Sci., vol. 74(10), 3583-3597, October 1991.

M. Rinne, S. Jaakkola, P. Huhtanen, “Grass maturity effects on cattle fed silage-based diets. 1. Organic matter digestion, rumen fermentation and nitrogen utilization,” Anim. Feed Sci. Tech., vol. 67, pp. 1-17, June 1997.

A.A. McConnell, M.A. Eastwood, W.D. Mitchell, “Physi¬cal characteristics of vegetable foodstuffs that could influence bowel function,” J. Sci. Food Agric., vol. 25, pp. 1457-1464, December 1974.

M.J.Y. Lin. “Certain functional properties of sunflower meal products,” J. Food Sci., vol. 39, pp. 368-370, March 1974.

J.M. Fuentes-Alventosa, G. Rodríguez-Gutiérrez, S. Jaramillo-Carmona, J.A. Spejo-Calvo, R. Rodríguez-Arcos, J. Fernández-Bolaños, R. Guillén-Bejarano, A. Jiménez-Araujo, “Effect of extraction method on chemical composition and functional characteristics of high dietary Fiber powders obtained from asparagus byproducts,” Food Chem., vol. 113, pp. 665-671, March 2009.

A. Mrabet, G. Rodríguez-Gutierrez, R. Guillen-Bejarano, R. Rodríguez-Arcos, A. Ferchichi, M. Sindic, A. Jimenez-Araujo, “Valorization of Tunisian secondary date varieties (Phoenix dactylifera L.) by hydrothermal treatments: New fiber concentrates with antioxidant properties,” LWT - Food Sci. Technol., vol. 60, pp. 518-524, January 2015.

M. Dubois, K.A. Gilles, G.K. Hamilton, P.A. Rebers, F. Smith. Colorimetric method for determination of sugars and related substances. Anal Chem., vol. 28, pp. 350-356, March 1959.

J.M. Morillas-Ruíz, J.M. Delgado-Alarcón, “Análisis nutricional de alimentos vegetales con diferentes orígenes: Evaluación de capacidad antioxidante y compuestos fenólicos totales,” Nutr. Clin. Diet. Hosp., vol. 32, no. 2, pp. 8-20, 2012.

R. Rodríguez, S. Jaramillo, G. Rodríguez, J.A. Espejo, R. Guillén, J. Fernández-Bolaños, A. Heredia, A. Jiménez, “Antioxidant activity of ethanolic extracts from several asparagus cultivars”, J. Agr. Food Chem., vol. 53, pp. 5212-5217, June 2005.

A. Nsren, “Etude comparative des procédés de séchage couplés à la texturation par Détente Instantanée Contrôlée DIC, en termes de cinétique et de qualité nutritionnelle. Applications à la valorisation des déchets agro-industriels,” Ph.D. dissertation (in French), La Rochelle Univ, La Rochelle, France, 2010.

A. Mrabet, R. Rodríguez-Arcos, R. Guillén-Bejarano, N. Chaira, A. Ferchichi, A. Jiménez-Araujo, “Dietary Fiber from Tunisian Common Date Cultivars (Phoenix dactylifera L.): Chemical Composition, Functional Properties, and Antioxidant Capacity,”. J. Agr. Food Chem., vol. 60, pp. 3658−3664, April 2012.

A. Abdul-Hamid, Y.S. Luan, “Functional properties of dietary fiber prepared from defatted rice bran,” Food Chem., vol. 68, pp. 15-19, January 2000.

L. Prosky, N.G. Asp, T.F. Scheweizer, J.W. DeVries, I. Furda, “Determination of insoluble and soluble, and total dietary Fiber in foods and food products: interlaboratory study,” J Assoc Off Anal Chem., vol. 71, pp. 1017-1023, September-October 1988.

USDA. (September 2020). National Nutrient Database for Standard Reference. Database Ressources of the United States Department of Agriculture. Available:

P. Wachirasiri, S. Julakarangka, S. Wanlapa, “The effects of banana peel preparations on the properties of banana peel dietary Fiber concentrate,” Songklanakarin J. Sci. Technol., vol. 31, no. 6, 605-611, January, 2010.

H.N. Rabetafika, B. Bchir, M. Aguedo, M. Paquot, C. Blecker, “Effects of Processing on the Compositions and Physicochemical Properties of Fiber Concentrate from Cooked Fruit Pomaces,” Food Bioproc. Tech., vol. 7, pp. 749-760, March 2014.

C. Borchani, S. Besbes, M. Masmoudi, C. Blecker, M. Paquot, H. Attia Influence of oven-drying temperature on physicochemicaland functional properties of date fiber concentrates. Food Bioproc. Tech., vol. 5, no. 1541-1551, July 2012.

Z. Lou, H. Wang, D. Wang, Y. Zhang, “Preparation of inulin and phenols-rich dietary Fiber powder from burdock root,” Carbohydrate Polymers., vol. 78, pp. 666-671, November 2009.

C.C. Tsen, W. Eyestone, J.L. Weber, “Evaluation of the quality of cookies supplemented with distillers’ dried grain flour,” J. Food Sci., vol. 47, no. 2, pp. 684-685, March 1982.

F.A. Masood, B. Sharma, G.S. Chauhan, “Use of apple as a source of dietary fiber in cakes,” Plant Food Hum. Nutr., vol. 57, pp. 121-128, March 2002.

R. Kaur, M. Kaur, “Microstructural, physicochemical, antioxidant, textural and quality characteristics of wheat muffins as influenced by partial replacement with ground flawseed,” LWT - Food Sci. Technol., vol. 91, pp. 278-285, May 2018.

V. Baldi, L. Little, E.E. Hester, “Effect of kind proportion of flour components and of cellulose level on cake structure,” Cereal Chem., vol. 42, pp. 462-465, 1965.

D.H. Donelson, J.T. Wilson, “Effect of the relative quantity of flour fractions on cake quality,” Cereal Chem., vol. 37, pp. 26-28, 1960.

M. Sowmya, T. Jeyarani, R. Jyotsna, D. Indrani, “Effect of replacement of fat with sesame oil and additives on rheological, microstructural, quality characteristics and fatty acid profile of cakes,” Food Hydrocolloids, vol. 23, pp. 1827-1836, October 2009.

Y. Pomeranz, D. Meyer, W. Seibel, “Wheatrye and rye dough and bread studied by scanning electron microscopy,” Cereal Chem., vol. 61, pp. 53-59, 1984.

J. Gao, F. Han, X. Guo, X. Zeng, S. Mason, M. Lbrennan, C.S. Abrennan, “Image Analysis of the Sugar-reduced Muffin Formulated with Stevianna® or Inulin as a Sugar Replacer,” Grain Oil Sci. Technol., vol. 1, no. 2, pp. 63-71, April 2018.

J.K. Kim, H.J. Lee, H.S. Lee, E.J. Lim, J.Y. Imm, H.J. Suh, “Physical and sensory characteristics of Fiber-enriched sponge cake made with Opuntia humifusa,” LWT - Food Sci. Technol., vol. 47, pp. 478-484, July 2012.

P. Ambigaipalan, F. Shahidi, “Date seed flour and hydrolysates affect physicochemical properties of muffin,” Food Biosci., vol. 12, pp. 54-60, December 2015.

T.M. Lu, C.C. Lee, J.L. Mau, S.D. Lin, “Quality and antioxidant property of green tea sponge cake,” Food Chem., vol. 119, pp. 1090-1095, April 2010.

N. Vergara-Valencia, E. Granados-Perez, E. Agama-Acevedo, J. Tovar, J. Ruales, L.A. Bello-Perez, “Fiber concentrate from mango fruit: characterization, associated antioxidant capacity and application as a bakery product ingredient,” LWT - Food Sci. Technol., vol. 40, pp. 722-729, May 2007.

C. Talens, S. Alvarez-Sabatel, Y Rios, R. Rodriguez, “Effect of a new microwave-dried orange fiber ingredients vs. a commercial citrus fiber on texture and sensory properties of gluten-free muffins,” ‎Innov. Food Sci. Emerg. Technol., vol. 44, pp. 83-88, December 2017.


How to Cite
Hamza, H., Jemni, M., Bazmi, A., Bazmi, A., Tombari, T., & Naggaz, K. (2021). Characterization and Valorization of Dietary Fibre Concentrate from Parthenocarpic Date Fruits. European Journal of Biology and Biotechnology, 2(3), 11-18.