title: Techno-functional properties and in vitro bile acid-binding capacities of tamarillo (Solanum betaceum Cav.) hydrocolloids.
abstract: Hydrocolloids were extracted from seed mucilage and the pulp fractions from red tamarillo (Solanum betaceum Cav.) mesocarp, and characterisation of their techno-functional properties and in vitro bile acid-binding capacities was performed. The seed mucilage hydrocolloids that were extracted, using either 1% citric acid (THC) or water (THW), had a good foaming capacity (32-36%), whereas the pulp hydrocolloids that were extracted, using 72% ethanol (THE) or 20mM HEPES buffer (THH), had no foaming capacity. The pulp hydrocolloid, however, possessed high oil-holding and water-holding capacities in the range of 3.3-3.6 g oil/g dry sample and 25-27 g water/g dry sample, respectively. This enabled the pulp hydrocolloid to entrap more bile acids (35-38% at a hydrocolloid concentration of 2%) in its gelatinous network in comparison to commercial oat fibre and other hydrocolloids studied. The exceptional emulsifying properties (80-96%) of both hydrocolloids suggest their potential applications as food emulsifiers and bile acid binders.
authors.affiliation: Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.
authors.forename: Sri Puvanesvari
authors.initials: SP
authors.lastname: Gannasin
authors.affiliation: Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.
authors.forename: Noranizan Mohd
authors.initials: NM
authors.lastname: Adzahan
authors.affiliation: Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia.
authors.forename: Shuhaimi
authors.initials: S
authors.lastname: Mustafa
authors.affiliation: Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia. Electronic address: kharidah@upm.edu.my.
authors.forename: Kharidah
authors.initials: K
authors.lastname: Muhammad
mesh_terms: D001647:Bile Acids and Salts / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry*; D045703:Emulsifying Agents / Q000737:chemistry; D004655:Emulsions; D011134:Polysaccharides / Q000737:chemistry; D012639:Seeds; D032322:Solanum / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D001647:Bile Acids and Salts; D003102:Colloids; D045703:Emulsifying Agents; D004655:Emulsions; D011134:Polysaccharides; D014867:Water
keywords: Hydrocolloids; In vitro bile acid-binding capacities; Tamarillo; Techno-functional properties