Water-soluble polysaccharides from Opuntia stricta Haw. fruit peels: Recovery, identification and evaluation of their antioxidant activities
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Water-soluble polysaccharides from Opuntia stricta Haw. fruit peels: Recovery, identification and evaluation of their antioxidant activities

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Water-soluble polysaccharides from Opuntia stricta Haw. fruit peels: Recovery, identification and evaluation of their antioxidant activities

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dc.contributor.author Koubaa, Mohamed
dc.contributor.author Ktata, Ameni
dc.contributor.author Barba Orellana, Francisco José
dc.contributor.author Grimi, Nabil
dc.contributor.author Mhemdi, Houcine
dc.contributor.author Bouaziz, Fatma
dc.contributor.author Driss, Dorra
dc.contributor.author Chaabouni, Semia Ellouz
dc.date.accessioned 2017-01-26T15:07:11Z
dc.date.available 2017-01-26T15:07:11Z
dc.date.issued 2015
dc.identifier.uri http://hdl.handle.net/10550/56907
dc.description.abstract Opuntia stricta Haw. is considered as one of the most common cactus plant growing in Tunisia. Extracting valuable compounds from its fruit peel, considered as by-product, is drawing more and more attention, making it on the verge of commercialization. Water-soluble polysaccharides were extracted from Opuntia stricta Haw. peels, and their chemical composition assessed using thin layer chromatography. The antioxidant activities of the extracted polysaccharides were assessed using 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity, total antioxidant activity and reducing power capacity. The extraction yield of water-soluble polysaccharides was 7.53±0.86%. The chemical composition revealed the presence of rhamnose, arabinose, glucose, mannose, galactose and galacturonic acid. The infra-red spectroscopic analysis showed a similar structure to that of Opuntia ficus-indica polysaccharide peels. Additionally, the extracted polysaccharides exhibited high antioxidant activities. In fact, the free radical scavenging activity (half inhibition concentration = 6.5 mg ml-1 with 94.9% inhibition at 50 mg ml-1), the total antioxidant activity (100 μg ascorbic acid equivalent at 50 mg polysaccharides) and the reducing power capacity (absorbance 700 nm = 0.7 at 50 mg ml-1), appeared to be interesting compared to natural and synthetic antioxidants. Therefore, water-soluble polysaccharides from Opuntia stricta Haw. fruit peels could be a natural alternative to replace synthetic antioxidants.
dc.language.iso eng
dc.relation.ispartof International Agrophysics, 2017, vol. 29, num. 3, p. 299-306
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Koubaa, Mohamed Ktata, Ameni Barba Orellana, Francisco José Grimi, Nabil Mhemdi, Houcine Bouaziz, Fatma Driss, Dorra Chaabouni, Semia Ellouz 2017 Water-soluble polysaccharides from Opuntia stricta Haw. fruit peels: Recovery, identification and evaluation of their antioxidant activities International Agrophysics 29 3 299 306
dc.title Water-soluble polysaccharides from Opuntia stricta Haw. fruit peels: Recovery, identification and evaluation of their antioxidant activities
dc.type info:eu-repo/semantics/article
dc.date.updated 2017-01-26T15:07:12Z
dc.identifier.doi https://doi.org/10.1515/intag-2015-0035
dc.identifier.idgrec 115530

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