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Previous issue date: 2012-03-22 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This study conducted chemical analyzes of the fruits of Licania tomentosa Benth
belonging to the Chrysobalanaceae family, order and superorder Rosiflorae Rosales. Samples
were collected in February 2011 in the city of Natal - RN. The fruits were separated into peel,
pulp and seed, and the samples were analyzed on moisture and ash by thermogravimetric
methods, reducing and total sugars, lipids by Soxhlet extraction, minerals by ICP / OES and
other analyzes by physical measurements of the fruit. The fruits for the analysis of
determination of flavonoids and phenolic compounds were dried at 40 ? C and ground. For the
analyzes to determine the content of phenolics and flavonols was used spectroscopy in the
visible region, and also performed the characterization of ethanol extracts by high
performance liquid chromatography and test for antioxidant activity hydroethanolic extracts.
The results obtained are about 83.9% of the fruits have a length between 4.0 to 6.0 cm with
respect to the diameter of the fruit about 97.4% of the fruits have a diameter between 2.0 - 4,
0 cm, mean weight of 36.14 g (7.86), the bark showed 60.5 (1.5)% relative humidity, the flesh
72.3 (0.9) and 44.4 seeds (0.4 )%, the bark showed 0.22 (0.00)% ash, the pulp 1.41 (0.01)%
and the seed 1.18 (0.01)%, the bark showed 3.73 (0, 09) mg lipids / 100 g sample of the pulp
0.40 (0.04) and the seed 0.05 (0.00). With respect to reducing sugars and total gave the
results, 16.23 (0.23) g/100g and 20.70 (0.24) g/100g. The fruit is presented with a good
source of nutrients especially carbohydrates and lipids. The analysis for determining the
antioxidant activity tests were performed reducing power and antioxidant capacity, the
antioxidant capacity of hydroethanolic extracts of peel and pulp showed similar results, with
higher concentrations however hydroethanolic bark extract. Regarding the content of
phenolics and flavonoids hidroetan?lico bark extract showed higher concentration values. The
characterization of the extracts by high performance liquid chromatography identified the
following compounds by retention time indicated by the race of the standards: galic acid,
kaempferol and kaempferol derivatives. Considering the results of the fruit Licania tomentosa
Benth may be an alternative food by analysis of their nutritional content and has substances
with antioxidant action / O presente trabalho realizou das an?lises bromatol?gicas com os frutos da Licania
tomentosa Benth que pertence ? fam?lia Chrysobalanaceae, ordem Rosales e superordem
Rosiflorae. As amostras foram coletadas no m?s de fevereiro de 2011 no munic?pio de Natal
RN. Os frutos foram fracionados em casca, polpa e semente, e com as amostras foram
realizadas as determina??es de umidade e cinzas por m?todos termogravim?tricos, a??cares
redutores e totais, lip?deos por extra??o com Soxhlet, minerais por ICP/OES e demais an?lises
por medi??es f?sicas dos frutos. Os frutos destinados as an?lises de determina??o do teor de
flavon?ides e fen?licos totais foram secos a 40?C e triturados. Para as an?lises de
determina??o do teor de fen?licos e flavon?is totais se utilizou a espectroscopia na regi?o do
vis?vel, sendo tamb?m realizada a caracteriza??o dos extratos etan?licos por cromatografia
l?quida de alta efici?ncia e teste de atividade antioxidante para os extratos hidroetan?licos.
Como resultados obteve-se cerca de 83,9% dos frutos apresentaram comprimento entre 4,0
6,0 cm, com rela??o ? determina??o do di?metro dos frutos cerca de 97,4 % dos frutos
apresentaram di?metro entre 2,0 4,0 cm, peso m?dio de 36,14 (7,86) g, a casca apresentou
60,5 (1,5)% de umidade, a polpa 72,3 (0,9) e a semente 44,4 (0,4)%, a casca apresentou 0,22
(0,00) % de cinzas, a polpa 1,41(0,01)% e a semente 1,18(0,01)%, a casca apresentou 3,73
(0,09)mg de lip?deos/ 100 g de amostra, a polpa 0,40(0,04) e a semente 0,05(0,00). Com
rela??o aos teores de a??cares redutores e totais obteve-se os respectivos resultados, 16,23
(0,23) g/100g e 20,70(0,24) g/100g. O fruto se apresenta com uma boa fonte de nutrientes
principalmente carboidratos e lip?deos. As an?lises de determina??o da atividade antioxidante
realizadas foram os testes de poder redutor e capacidade antioxidante, a capacidade
antioxidante dos extratos hidroetan?licos da casca e da polpa apresentaram resultados
semelhantes, sendo entretanto superior as concentra??es do extrato hidroetan?lico da casca.
Com rela??o ao teor de fen?licos e flavon?ides totais o extrato hidroetan?lico da casca
apresentou valores de concentra??o superiores. Na caracteriza??o dos extratos por
cromatografia l?quida de alta efici?ncia foram identificados os seguintes compostos por meio
do tempo de reten??o indicado pela corrida dos padr?es: ?cido g?lico, campferol e derivados.
Diante dos resultados o fruto da Licania tomentosa Benth pode ser uma alternativa de
alimento mediante a an?lise de seu conte?do nutricional e por possuir subst?ncias com a??o
antioxidante
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17695 |
| Date | 22 March 2012 |
| Creators | Teixeira, Luciane de Lira |
| Contributors | CPF:31482015404, http://lattes.cnpq.br/2959800336802498, Assis, Cristiane Fernandes de, CPF:03143301600, http://lattes.cnpq.br/0034694007210837, Silva, Djalma Ribeiro da, CPF:13893734449, http://lattes.cnpq.br/2791074318745945, Moita, Graziella Ciaramella, CPF:08193826809, http://lattes.cnpq.br/6123729636062436, Moura, Maria de F?tima Vit?ria de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Qu?mica, UFRN, BR, F?sico-Qu?mica; Qu?mica |
| 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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