title: Relationship between the chemical components of taro rhizome mucilage and its emulsifying property.
abstract: The objective of this study was to determine the chemical composition of taro mucilage (TM) and explain its emulsification properties using different commercial emulsifiers and gums as benchmarks. The following analyses were performed: moisture, ether extract, protein, fiber, ash, sugar fraction, starch content, infrared spectroscopy and determination of monosaccharides and amino acids using HPLC. The analyses showed that TM has a high carbohydrate content and small protein fraction, similar to commercial gums. Commercial emulsifiers have a high content of lipids compared to TM. Therefore, it can be concluded that the emulsifying power of the studied mucilage is primarily caused by the protein content along with weakly polar amino acids, which occur in gums. The methyl group (CH3), which was observed in the infrared spectrum, and the lipid content may also contribute to the emulsifying activity by providing a hydrophobic moiety.
authors.affiliation: Federal University of Lavras (Universidade Federal de Lavras - UFLA), Brazil. Electronic address: luandrade87@yahoo.com.br.
authors.forename: Luan Alberto
authors.initials: LA
authors.lastname: Andrade
authors.affiliation: Department of Food Science, UFLA, Brazil.
authors.forename: Cleiton Antônio
authors.initials: CA
authors.lastname: Nunes
authors.affiliation: Department of Food Science, UFLA, Brazil.
authors.forename: Joelma
authors.initials: J
authors.lastname: Pereira
mesh_terms: D002241:Carbohydrates / Q000032:analysis / Q000737:chemistry; D031060:Colocasia / Q000737:chemistry*; D004655:Emulsions / Q000737:chemistry; D008055:Lipids / Q000737:chemistry; D027343:Rhizome / Q000737:chemistry*; D014783:Viscosity
chemical_list: D002241:Carbohydrates; D004655:Emulsions; D008055:Lipids
keywords: Amphiphilic molecule; Colocasia esculenta; Commercial emulsifiers; Gums