Navegando por Assunto "Polpa de frutas"

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Acesso aberto (Open Access)
Análise higiênico-sanitária de polpas de cupuaçu e bacuri comercializadas na cidade de Belém, Pará
(Universidade Federal do Pará, 2005-05-30) CAVALCANTE, Rejane Maria Sales; FRAIHA NETO, Habib; http://lattes.cnpq.br/9202245658963683
The consuption of fruit pulp and your derivatives have been increased, because of their nutricional properties, flavors variety and aromas, and the increasing search for the products with in natura food characteristics. The pulps are used for direct comsuption or as a raw material for juice, ice cream, yogurt industries. The process to obtain pulp should be done in right hygiene conditions, followed by apropriated storage, to assure integrity and quality of products. The study objective was value sanytary hygienic conditions of cupuaçu and bacuri pulps sold in the city of Belém, considering that the processing involves fruit manipulation, sometimes with not apropriated hands. Your realization counted on the Division of Sanitary Vigilancy of Municipal Health Department, Central Laboratory of the State of Pará (LACEN) and Laboratory of Parasitology on Biological Sciences Center Support. The methods used were microbiological, microscopical, parasitological analysis of 33 samples bought in 11 street markets, with in we easily find these products, the street markets are well distributed in the neighborhoods of Belém Icoaraci small town. 22 cupuaçu and 11 bacuri samples were analysed. The microbiological analysis were made regarding presence of 45ºC coliformes using more probable number (NMP) method, and Salmonella sp., in agreement with RDC nº12/2001/ANVISA. The results were all negatives. The microscopical examination, followed nº1/2000 Instruction of Supplying and Agriculture Department didn’t show any dirty in the samples. The parasitological analysis was made following Faust method and no worms or protozoan were found. Although the street markets observation of sanitary hygienic conditions suggests product cantamination, all 33 samples of cupuaçu and bacuri pulps were considered good for consuption, in agreement with current legislation. These results can be explained by the acid level and the presence of citric acid both products, and because of the freezing process.
Acesso aberto (Open Access)
Characterization of the Fruit Pulp of Camu-Camu (Myrciaria dubia) of Seven Different Genotypes and Their Rankings Using Statistical Methods PCA and HCA
(Universidade Federal do Pará, 2016-10) FREITAS, Camila Auad Beltrao de ; SILVA, Antonio dos Santos; ALVES, Claudio Nahum; NASCIMENTO, Walnice Maria Oliveira do; LOPES, Alessandra Santos; LIMA, Marcelo de Oliveira; MÜLLER, Regina Celi Sarkis
Due to the economic potential of camu-camu, considering its high concentration of vitamin C, the aim of this work was to evaluate the quality and genetic variability seven accessions of camu-camu conserved in genebank (BAG) of Embrapa Amazônia Oriental, in the state of Pará, Amazon region, Brazil. The fruits of camucamuzeiro were analyzed for physicochemical characterization (standard methodologies) and mineral composition. The data were subjected to multivariate statistical analysis, using the techniques of cluster analysis and principal component analysis. The formation of different groups for each genotype, which shows the genetic variability and the dissimilarity of the genotypes in the species data, may be used to guide the selection of promising genotypes to enrich the programs of genetic improvement of the camucamuzeiro. Ascorbic acid showed levels above 1000 mg 100 g-1, however, genotypes 4, 1 and 2 show the highest potential and the most promising nutritional capacity, but genotype 4 showed good characteristics for the moisture, acidity, carbohydrates, Cu and Zn and differs totally from others about the total soluble solids (TSS) and flavon-3-ol, features that make it the most promising genotype. It was possible to separate the seven different genotypes using multivariate analysis (hierarchical cluster analysis-HCA and principal component analysis-PCA).
Acesso aberto (Open Access)
Efeito dos diferentes tratamentos e embalagens nas características da polpa de acerola e na determinação dos teores de ácido ascórbico e das antocianinas durante o armazenamento
(Universidade Estadual de Campinas, 1999-12-21) SILVA, Maria de Fatima Vilhena da; MENEZES, Hilary Castle de; http://lattes.cnpq.br/6478475854489070
West Indian cherry is a rich source of ascorbic acid and a relative source of anthocyanins. The fruit and its products have been objects of great demand to serve individually as a nutritional source, or as a supplementary source of this vitamin for other foods. Ascorbic acid and the anthocyanins present antioxidant and preventative properties of various diseases which affect man, such as cancer, cardiovascular problems and others. One of the problems in the industrialization of this fruit and its products is related to the losses of ascorbic acid and the color of the product. Thus, this research was conducted with the objective of investigating the degradation of ascorbic acid and of the anthocyanins in West Indian cherry pulps submitted to different treatments: pulp without heat treatment, thermal inactivation or blanching, pasteurization (HTST) with and without aeration. The pulps were tested in glass and tin packages, and stored for six months for a better evaluation of their vitamin potential and lhe level of color maintenance of the products. All the experiments were developed at the pilot plant level. The second chapter considers the tests conducted with different methods for the determination of ascorbic acid in West Indian cherry pulp for the selection of those which offered good results as compared to CLAE, and which are fast, precise and economic. The method which fitted these characteristics, was that of titration with 2,6-dichloroindophenol. However, due to the intense color of the pulp, it was necessary to study a way to facilitate the titration and make the results more precise. The modifications made to this method to reach these objectives are presented in the second chapter. The new modifications showed result in excellent performance and the data were statistically similar to those obtained by CLAE. In the third chapter, an investigation of the physicochemical characteristics of the West Indian cherry pulps was made, emphasizing the effect of processing and types of package at zero time and during the storage period of six months. In this chapter, the individual results, the correlation amongst the analyses for ascorbic acid, total anthocyanins, pH, total titrable acidity expressed as malic acid and as citric acid, total solids and °Brix were shown. The results showed high correlation between ascorbic acid and anthocyanins. In the fourth chapter, a detailed study of the color of the pulps was made using the L a b system, that is, a study of the "hue", difference in color and saturation of color during storage. It was possible to verify from the results, that the product color was directly related to the type of processing and storage conditions. In the fifth and last chapter, the anthocyanins in the pulp without heat treatment were identified, and also the effects of processing on these pigments. The anthocyanin encountered in highest amounts was cyanidine, malvidine and pelargonidine also being present. The latter was shown to be more sensitive to heat treatments. Deaeration of the pasteurized pulp, and type of package showed no significant difference.
Acesso aberto (Open Access)
Fatty acid profiles and tocopherol contents of buriti (Mauritia flexuosa), patawa (Oenocarpus bataua), tucuma (Astrocaryum vulgare), mari (Poraqueiba paraensis) and inaja (Maximiliana maripa) fruits
(2010) RODRIGUES, Antonio Manoel da Cruz; DARNET, Sylvain Henri; SILVA, Luiza Helena Meller da
Amazonian fruits are rich in fat but have a fatty acid profile that may be beneficial in relation to risk of coronary heart disease. Amazonian fruits also contain other potentially cardioprotective constituents including tocopherols. Tocopherol profiles were determined by high performance liquid chromatography (HPLC), and fatty acid profiles were determined by gas chromatography (GC). In the present study, the total oil content, fatty acid composition and tocopherol content of the pulps of five Amazonian fruits (buriti, patawa, tucuma, mari and inaja) were measured. The total oil content of the fruits ranged from 31.0 to 41.8%. The major fatty acid in all of the fruits was oleic acid (C18:1), though substantial levels of palmitic acid (C16:0) were present. Linoleic acid (C18:2) was the main polyunsatured fatty acid observed. α-Tocopherol was the most prevalent tocopherol except in buriti pulp. Buriti and mari pulp have a high content in α-tocopherols with 297 and 155 µg g-1 of dry matter. Our data indicate that all five of these Amazonian fruits are good sources of unsaturated fatty acids and tocopherols.
Acesso aberto (Open Access)
Nutritional composition, fatty acid and tocopherol contents of buriti (Mauritia flexuosa) and patawa (Oenocarpus bataua) fruit pulp from the amazon region
(2011-06) DARNET, Sylvain Henri; SILVA, Luiza Helena Meller da; RODRIGUES, Antonio Manoel da Cruz; LINS, Roseana Telles
Buriti and patawa are two endemic palm trees from the Amazon region. Their pulps are traditionally consumed by the local population, but are underused and lesser known worldwide. Nutritional composition, fatty acid and tocopherol contents of the two palm pulps were determined by modern analytical methods: Gas Chromatography (CG) and High Performance Liquid Chromatography (HPLC), based on the standards of AOCS (AMERICAN..., 2002) and AOAC (ASSOCIATION..., 1997), respectively. Buriti and patawa fruit pulps are highly nutritive, with respectively, high fat content (38.4% and 29.1% of dry matter (DM)), protein content (7.6% and 7.4% of DM) and dietary fibers (46% and 44.7% of DM). Buriti pulp can be considered healthy food due its high content of vitamin E (1169 µg.g-1 DM). Patawa pulp is highly oleaginous and its fatty acid composition is very similar to the ones of healthy oils, such as olive oil.
Acesso aberto (Open Access)
Rheological behavior of Brazilian Cherry (Eugenia uniflora L.) pulp at pasteurization temperatures
(2013-03) LOPES, Alessandra Santos; MATTIETTO, Rafaella de Andrade; MENEZES, Hilary Castle de; SILVA, Luiza Helena Meller da; PENA, Rosinelson da Silva
The rheological behavior of Brazilian Cherry (Eugenia uniflora L.) pulp in the range of temperatures used for pasteurization (83 to 97 °C) was studied. The results indicated that Brazilian Cherry pulp presented pseudoplastic behavior, and the Herschel-Bulkley model was considered more adequate to represent the rheological behavior of this pulp in the range of temperatures studied. The fluid behavior index (n) varied in the range from 0.448 to 0.627. The effect of temperature on the apparent viscosity was described by an equation analogous to Arrhenius equation, and a decrease in apparent viscosity with an increase in temperature was observed.