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Previous issue date: 2011-02-15 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Fruits are rich sources of bioactive compounds, including phenolic compounds.
Tropical fruit cultivation is an important productive segment in Brazilian Northeast. Its
industrialization generates solid wastes as co-products, with potential environmental
impact. Considering the recognized bioactive content of fruit and its derivatives, this
research has the objective of investigating acerola (Malpighia glabra L.), caj?-umbu
(Spondia ssp), jambolan (Syzygium cumini) and pitanga (Eugenia uniflora) dried wastes
obtained by spouted bed drier. It was analyzed the physical-chemical composition,
solubility and microphotographic aspect of these dried wastes. Besides this, it was also
evaluated the bioactive content, antioxidant activity and inhibitory activity against aamylase
and a-glycosidase enzymes of water and ethanol (70%, 80% e 100% v/v)
extracts prepared from fruit dried wastes, as well as their possible correlations. The
dried fruit wastes showed high phenolic (606.04 to 3074.6 mg GAE eq/100 g sample),
anthocyanin (478.7 mg/100 g for jambolan) and ascorbic acid (2748.03 mg/100 g for
acerola) contents, as well as high antioxidant DPPH activity (14.27 a 36.30 mg Trolox
eq/g sample). The extracts exhibited moderate to high a-amylase inhibition (23.97% a
76.58%) and high α-glycosidase inhibition, which 99.32% peak was reached for ethanol
70% pitanga extracts. It was also observed great positive correlation between phenolic
content and DPPH activity (0.97 for acerola), anthocyanin (0.95 for jambolan) and α-
glycosidase inhibition (0.98 for acerola). The α-glycosidase inhibition also correlated
well with the antioxidant activity for all fruit extracts. The results show that these dried
fruit wastes are valuable material for further applications as functional ingredients / As frutas possuem importantes compostos bioativos, dentre eles os compostos
fen?licos. O cultivo de frutas tropicais ? um importante segmento produtivo do
Nordeste Brasileiro, mas sua industrializa??o gera res?duos s?lidos como c?-produtos da
atividade, pass?veis de gerar impacto ambiental. Tendo em vista o reconhecido conte?do
bioativo de frutas e seus c?-produtos, objetivou-se estudar o baga?o desidratado da
acerola (Malpighia glabra L.), caj?-umbu (Spondia ssp), jambol?o (Syzygium cumini) e
pitanga (Eugenia uniflora) obtidos em secador de leito de jorro. A partir disso, foi
analisada a composi??o f?sico-qu?mica, solubilidade e aspecto microfotogr?fico dos
baga?os secos. Al?m disso, foi avaliada a concentra??o de compostos bioativos,
atividade antioxidante e atividade inibit?ria contra as enzimas α-amilase e α-glicosidase
do extrato aquoso e extratos etan?licos (70%, 80% e 100% v/v) preparados a partir dos
baga?os desidratados, bem como suas correla??es. Os p?s de fruta apresentaram
elevado teor de compostos fen?licos (606,04 a 3074,6 mg GAE eq/100 g amostra),
antocianinas (478,7 mg/100 g para jambol?o) e ?cido asc?rbico (2748,03 mg/100 g),
bem como expressiva atividade antioxidante medida pelo m?todo DPPH (14,27 a 36,30
μg Trolox eq/g amostra). Os extratos foram capazes de expressar inibi??o da α-amilase
de moderada a alta (23,97% a 76,58%) e expressiva inibi??o da α-glicosidase, cujo
m?ximo de 99,32% foi alcan?ado pelos extratos etan?licos 70% da pitanga. Foi
observada correla??o positiva entre o teor fen?lico e atividade antioxidante (0,97 para
acerola), antocianinas (0,95 para jambol?o), inibi??o da α-amilase (0,99 para jambol?o)
e inibi??o da α-glicosidase (0,93 para pitanga) e dessas duas ?ltimas com a atividade
antioxidante para todos os frutos estudados. Os dados apresentados demonstram que os
res?duos desidratados constituem valioso material de estudo para aplica??es como
ingredientes funcionais
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15809 |
| Date | 15 February 2011 |
| Creators | Borges, K?tia Cristina |
| Contributors | CPF:84702885472, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798196E6, Matsui, K?tia Nicolau, CPF:26114671880, http://lattes.cnpq.br/3253316004789881, Genovese, Maria Ines, CPF:10545944813, http://lattes.cnpq.br/3761799912749347, Medeiros, Maria de F?tima Dantas de, Correia, Roberta Targino Pinto |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Qu?mica, UFRN, BR, Pesquisa e Desenvolvimento de Tecnologias Regionais |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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