Navegando por Autor "Fujita, Alice"
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Artigo Dried camu-camu (Myrciaria dubia H. B. K. McVaugh) industrial residue: a bioactive-rich Amazonian powder with functional attributes(Elsevier, 2014-08) Azevedo, Juliana Chrís Silva de; Fujita, Alice; Oliveira, Edson Leandro de; Genovese, Maria Inês; Correia, Roberta Targino PintoCamu-camu is a tropical Amazonian fruit, extensively processed into fruit pulp and other derivatives. This work investigates the fresh and dried (hot air dried and freeze dried) camu-camu depulping residue in regard to its physicochemical characteristics, bioactive content, in vitro antidiabetic potential and antimicrobial activities. The phenolic content of fresh residue (FR), hot air dried residue at 50 °C (HAD50), hot air dried residue at 80 °C (HAD80) and freeze dried residue (FD) were 3738.0, 1843.6, 1349.4 and 2160.2 mg GAE/100 g DW, respectively. Important flavonoids were identified (quercetin, myricetin, and catechin), besides high amount of ellagic acid (18.9 mg/100 g DW for the fresh residue), and for the first time in literature, the presence of syringic acid (3.1 to 7.0 mg/100 g DW) in the camu-camu residue was shown. The Minimum Inhibitory Concentration against Staphylococcus aureus ranged from 0.3125 to 0.625 mg/mL for freeze dried and hot air dried camu-camu residues. Moderate in vitro alpha-amylase and potent alpha-glucosidase inhibitory activities were also observed for all extracts. This paper presents the dried camu-camu residue as a natural powder with bioactive and functional properties.Artigo Fresh and spray dried pitanga (eugenia uniflora) and jambolan (syzygium cumini) pulps are natural sources of bioactive compounds with functional attributes(Journal of Probiotics & Health, 2016) Borges, Kátia Cristina; Bezerra, Maria de Fátima; Rocha, M. P.; Silva, E.S.D.; Fujita, Alice; Genovese, Maria Inês; Correia, Roberta Targino PintoThis study approaches the physicochemical and bioactive characterization of fresh (FR), spray dried (SD) and freeze dried (FD) jambolan (JA) and pitanga pulps (red: RP and purple: PP) varieties). In general, the concentration of bioactive compounds followed the tendency FR>FD>SD. All samples presented high proanthocyanidin content (18.7 to 121.9 g QTE/Kg-1 DW), ellagic acid (0.203 to 0.943 g/Kg-1 DW) and anthocyanins (up to 15.8 g/Kg-1 DW). In this study, JA, RP and PP powders showed activity against alphaamylase, alpha-glucosidase and pancreatic lipase. This is the first report of protocatechuic and p-coumaric acids in fresh and spray dried red pitanga pulps. Also, this is the first time that the colorant potential and proanthocyanidin content of dried PP is shown. Overall, this research presents fresh data about these tropical fruits and demonstrates the multifunctional attributes of these understudied Myrtaceae examples of Brazilian biodiversityArtigo Impact of spouted bed drying on bioactive compounds, antimicrobial and antioxidant activities of commercial frozen pulp of camu-camu (Myrciaria dubia Mc. Vaugh)(Elsevier, 2013-11) Fujita, Alice; Borges, Kátia; Correia, Roberta Targino Pinto; Franco, Bernadette Dora Gombossy de Melo; Genovese, Maria InésCamu-camu (Myrciaria dubia Mc. Vaugh) has promising perspectives for agro industrial purposes mainly due to the functional potential. This works deals with the impact of spouted bed drying on bioactive compounds, antioxidant and antimicrobial activities, having the fresh and freeze-dried fruit pulp as references. Commercial camu-camu pulp was spouted bed dried at selected temperatures with different maltodextrin concentrations (carrier agent). The fruit powders were compared in relation to color, in vitro antioxidant capacity, total phenolics, ascorbic acid and proanthocyanidin contents. The spouted bed drying of the pulp led to significant losses, in the order ascorbic acid (45–64%) > total phenolics (33–42%) > proanthocyanidins (16–18%), and freeze-drying better preserved antioxidant capacity (74 to 87%) compared to spouted bed drying (29 to 78%). Freeze-dried powder was classified as active, and spouted bed powders as partially active, against S. aureus. Despite of losses caused by drying, camu-camu powders still represent excellent sources of bioactive compounds with great potential for use as new bioactive ingredients.