title: Survey of quality indicators in commercial dehydrated fruits.
abstract: Physical and chemical quality parameters (dry matter, aw, protein, carbohydrates, vitamin C, 2-furoylmethyl amino acids, rehydration ratio and leaching loss) have been determined in 30 commercial dehydrated fruits (strawberry, blueberry, raspberry, cranberry, cherry, apple, grapefruit, mango, kiwifruit, pineapple, melon, coconut, banana and papaya). For comparison purposes, strawberry samples processed in the laboratory by freeze-drying and by convective drying were used as control samples. Overall quality of dehydrated fruits seemed to be greatly dependent on processing conditions and, in a cluster analysis, samples which were presumably subjected to osmotic dehydration were separated from the rest of fruits. These samples presented the lowest concentration of vitamin C and the highest evolution of Maillard reaction, as evidenced by its high concentration of 2-furoylmethyl amino acids. This is the first study on the usefulness of this combination of chemical and physical indicators to assess the overall quality of commercial dehydrated fruits.
authors.affiliation: Instituto de Investigación en Ciencias de la Alimentación (CIAL), (CSIC-UAM), CEI (UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain.
authors.forename: Roberto
authors.initials: R
authors.lastname: Megías-Pérez
authors.affiliation: Instituto de Investigación en Ciencias de la Alimentación (CIAL), (CSIC-UAM), CEI (UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain.
authors.forename: Juliana
authors.initials: J
authors.lastname: Gamboa-Santos
authors.affiliation: Instituto de Química Orgánica General (CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain.
authors.forename: Ana Cristina
authors.initials: AC
authors.lastname: Soria
authors.affiliation: Instituto de Investigación en Ciencias de la Alimentación (CIAL), (CSIC-UAM), CEI (UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain. Electronic address: m.villamiel@csic.es.
authors.forename: Mar
authors.initials: M
authors.lastname: Villamiel
authors.affiliation: Instituto de Investigación en Ciencias de la Alimentación (CIAL), (CSIC-UAM), CEI (UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain.
authors.forename: Antonia
authors.initials: A
authors.lastname: Montilla
mesh_terms: D029042:Actinidia / Q000737:chemistry; D000596:Amino Acids / Q000032:analysis; D031230:Ananas / Q000737:chemistry; D001205:Ascorbic Acid / Q000032:analysis; D029441:Carica / Q000737:chemistry; D003890:Desiccation; D005519:Food Preservation; D031985:Fragaria / Q000737:chemistry; D005638:Fruit / Q000737:chemistry* / Q000191:economics*; D015416:Maillard Reaction; D027845:Malus / Q000737:chemistry; D031022:Mangifera / Q000737:chemistry; D009753:Nutritive Value; D011786:Quality Control
chemical_list: D000596:Amino Acids; D001205:Ascorbic Acid
keywords: 2-Furoylmethyl amino acids; Dehydrated fruits; Osmotic dehydration; Quality; Rehydration; Vitamin C