title: Spray-drying microencapsulation of synergistic antioxidant mushroom extracts and their use as functional food ingredients.
abstract: In this work, hydroalcoholic extracts of two mushrooms species, Suillus luteus (L.: Fries) (Sl) and Coprinopsis atramentaria (Bull.) (Ca), were studied for their synergistic antioxidant effect and their viability as functional food ingredients tested by incorporation into a food matrix (cottage cheese). In a first step, the individual extracts and a combination of both, showing synergistic effects (Sl:Ca, 1:1), were microencapsulated by spray-drying using maltodextrin as the encapsulating material. The incorporation of free extracts resulted in products with a higher initial antioxidant activity (t0) but declining after 7 days (t7), which was associated with their degradation. However, the cottage cheese enriched with the microencapsulated extracts, that have revealed a lower activity at the initial time, showed an increase at t7. This improvement can be explained by an effective protection provided by the microspheres together with a sustained release. Analyses performed on the studied cottage cheese samples showed the maintenance of the nutritional properties and no colour modifications were noticed.
authors.affiliation: Mountain Research Center (CIMO), ESA, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1172, 5301-855 Bragança, Portugal; Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1134, 5301-857 Bragança, Portugal.
authors.forename: Andreia
authors.initials: A
authors.lastname: Ribeiro
authors.affiliation: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1134, 5301-857 Bragança, Portugal; Laboratory of Separation and Reaction Engineering (LSRE) - Associate Laboratory LSRE/LCM, Faculty of Engineering, University of Porto, Porto, Portugal.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Ruphuy
authors.affiliation: Laboratory of Separation and Reaction Engineering (LSRE) - Associate Laboratory LSRE/LCM, Faculty of Engineering, University of Porto, Porto, Portugal.
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Lopes
authors.affiliation: Laboratory of Separation and Reaction Engineering (LSRE) - Associate Laboratory LSRE/LCM, Faculty of Engineering, University of Porto, Porto, Portugal.
authors.forename: Madalena Maria
authors.initials: MM
authors.lastname: Dias
authors.affiliation: Mountain Research Center (CIMO), ESA, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1172, 5301-855 Bragança, Portugal.
authors.forename: Lillian
authors.initials: L
authors.lastname: Barros
authors.affiliation: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1134, 5301-857 Bragança, Portugal. Electronic address: barreiro@ipb.pt.
authors.forename: Filomena
authors.initials: F
authors.lastname: Barreiro
authors.affiliation: Mountain Research Center (CIMO), ESA, Polytechnic Institute of Bragança, Campus Santa Apolónia Ap. 1172, 5301-855 Bragança, Portugal. Electronic address: iferreira@ipb.pt.
authors.forename: Isabel C F R
authors.initials: IC
authors.lastname: Ferreira
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D000975:Antioxidants; D004339:Drug Compounding / Q000379:methods*; D055951:Functional Food / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010936:Plant Extracts
keywords: Antioxidant activity; Cottage cheese; Microencapsulation; Mushroom extracts; Synergistic effects