Resumo -O estado da Paraíba é um dos maiores produtores de abacaxi do Brasil. Esse abacaxi pode ser utilizado de diferentes maneiras tanto in natura como na produção de produtos como: polpa congelada, sucos, doces, geleias e outros. Os resíduos produzidos do processamento de frutas apresentam em sua composição diversos nutrientes, que poderiam ser utilizados tantos para alimentação humana, quanto para a fabricação de ração animal, como uma maneira de impedir o desperdício e minimizar o problema da poluição ambiental e também da desnutrição Neste trabalho foi estudada a influência da temperatura de secagem do resíduo de abacaxi sobre os parâmetros físico-químicos do mesmo. Os resíduos foram submetidos a secagem nas temperaturas de 50, 60 e 70 °C. ). Os resíduos secos demonstraram um aumento da acidez, do pH, dos parâmetros de cor e açúcar redutores com a elevação da temperatura apresentando o inverso para os parâmetros de atividade de água e teor de água, os teores de cinzas permaneceram estáveis como já era esperado. Desta forma um único parâmetro que não sofreu influência da temperatura foi o parâmetro de cinzas. Palavras-chave:Resíduos de abacaxi; Secagem; Cinzas. Influence of drying temperature on the physical-chemical properties of pineapple residuesAbstract -The state of Paraíba is one of the largest producers of pineapples in Brazil. This pineapple can be used in different ways both in natura and in the production of products like: frozen pulp, juices, jams, jellies and others.The residues produced from fruit processing have in their composition various nutrients, which could be used as much for human consumption as for the manufacture of animal feed, as a way to prevent waste and to minimize the problem of environmental pollution and also malnutrition in this The influence of the drying temperature of the pineapple residue on the physical-chemical parameters of the pineapple. The residues were dried at temperatures of 50, 60 and 70 ° C. Analyzes of water content, ash, pH, acidity, water activity, reducing sugars and color were performed. The values found for the in natura residue were: Acidity 0. ); Ash 0.47 g (100g -1 ). The dry residues showed an increase in acidity, pH, reducing color and sugar parameters with temperature elevation showing the inverse for the parameters of water activity and water content, the ash content remained stable as expected. Thus, a single parameter that was not influenced by temperature was the ash parameter.
Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. Comportamento reológico das polpas de noni integral e concentradasRheological behavior of whole and concentrated noni pulp ResumoO comportamento reológico de polpas de frutas permite a obtenção de importantes informações sobre seu escoamento em distintas condições e nas diversas etapas do processo. Em vista disso, o presente trabalho teve como objetivo analisar o comportamento reológico da polpa de noni (Morinda citrifolia L.) integral e concentradas a 30 e 50°Brix. Os parâmetros reológicos determinados foram: tensão de cisalhamento, taxa de deformação e viscosidade aparente, utilizando-se um viscosímetro Brookfield nas velocidades de rotação de 5 a 200 rpm e temperaturas de 5 a 65°C. Dentre os modelos testados, o que melhor representou os reogramas das polpas de noni integral e concentradas foi o de Mizrahi & Berk, cujos ajustes foram R 2 ≥ 0,8219, X 2 ≤ 0,1569 e P ≤ 2,26%. As polpas estudadas apresentaram valores para índice de comportamento do fluido menores que um (n<1), sendo caracterizadas, portanto, como fluidos não newtonianos com comportamento pseudoplástico. A equação do tipo Arrhenius pode ser utilizada para demonstrar o efeito da temperatura sobre a viscosidade aparente nas polpas integral e concentrada com 30°Brix, em todas as velocidades de rotação, e na polpa concentrada com 50°Brix, preferencialmente nas velocidades de rotação de 5, 10 e 20 rpm. Palavras-chave: Morinda citrifolia L.; Fluido pseudoplástico; Viscosidade aparente. SummaryThe rheological behaviour of fruit pulps allows one to obtain important information about their flow under distinct conditions and at different stages of the process. Thus the present study aimed to analyse the rheological behaviour of whole noni pulp (Morinda citrifolia L.) and that concentrated to 30 and 50 °Brix. The rheological parameters determined were: shear stress, strain rate and apparent viscosity, using a Brookfield viscometer at rotational speeds of 5 to 200 rpm and temperatures from 5 to 65 °C. Of the models tested, the Mizrahi & Berk model best represented the rheograms of the whole and concentrated noni pulps with the following fittings: R 2 ≥ 0.8219, X 2 ≤ 0.1569 and P ≤ 2.26%. The pulps studied presented values for the fluid behaviour index of less than one (n<1), characterizing them as non-Newtonian fluids with pseudoplastic behaviour. The Arrhenius equation can be used to demonstrate the effect of temperature on the apparent viscosity for the whole and 30 ºBrix pulps at all speeds, and for the pulp with 50°Brix preferably at rotational speeds of 5, 10 and 20 rpm. Agrícola, Avenida Aprígio Veloso, 882, Cite as: Rheological behavior of whole and concentrated noni pulp. Braz. J. Food Technol., v. 20, e2016067, 2017. Received: June 17, 2016 Accepted: Mar. 03, 2017 1 Introdução A Morinda citrifolia L. é um planta pe...
The objective of this work was to determine the physical and physicochemical characteristics of the peach cultivar Rubimel marketed in the city of Campina Grande (PB). To determine the physical properties, the following parameters were identified: mass, longitudinal diameter, transverse diameter, small diameter, volume, density and percentage of fruits. The physico-chemical characteristics were made in triplicate in the pulp and the peach peel, obtaining the values of water content, total titratable acidity, pH, total soluble solids (pulp), ratio, total sugars, reducers sugar and no reducers sugar, vitamin C and anthocyanins. Regarding the physical properties, the Rubimel peach presented 123.2 g, 4.7 cm, 4.7 cm, 4.3 cm, 129.8 mL, 1.0 g.mL-1 and 75.2% for the mass, diameter longitudinal diameter, transverse diameter, small diameter, volume, density and pulp yield, respectively. The physico-chemical characteristics showed that the pulp and the peel have a high water content, which makes the fruit perishable, low acidity, neutral pH, high total soluble solids content and a ratio of 38.4 (° Brix / SST) and sucrose as the predominant sugar in the peach pulp. The vitamin C is present in both pulp and in pell in considerable amounts. The pulp has a light reddish-yellow color, while the peel is light yellowish-red due to the presence of anthocyanins. The importance of this compound is due, in part, to the antioxidant action that it confers the fruit.
Among the vegetables that stand out for their high concentration of anthocyanins, red cabbage appears as one of the most-used sources of these pigments in food production and it is considered a suitable raw material for the extraction of natural dye. Therefore, the objective was to carry out the production of natural extracts from red cabbage, under different conditions, varying the solvent, type of pre-treatment, pH range, and processing temperature during the concentration of the extracts. The anthocyanins were extracted from red cabbage using the following solvents: distilled water, 25% ethyl alcohol, and 70% ethyl alcohol. The raw material was divided into two groups, the first was subjected to a drying pre-treatment at 70 °C for 1 h and for the second group, the extraction was performed with the raw material in natura. Two pH ranges of 4.0 and 6.0 and extraction temperatures of 25 °C and 75 °C were used in the extracts, resulting in 24 formulations. The extracts obtained were analyzed for colorimetric parameters and anthocyanins. The results of anthocyanins show that the methodology that uses 25% alcohol, pH 4.0, and processing temperature of 25 °C produces a reddish extract and better results in the extraction, presenting average values of 191.37 mg/100 g of anthocyanins, being 74% higher compared to the highest values obtained in the other extracts where the same raw material was used and the solvents differed.
CIP) (eDOC BRASIL, Belo Horizonte/MG) P964 A produção do conhecimento nas ciências da saúde 2 [recurso eletrônico] / Organizador Benedito Rodrigues da Silva Neto. -Ponta Grossa (PR): Atena Editora, 2019. -(A Produção do Conhecimento nas Ciências da Saúde; v. 2) Formato: PDF 1. Abordagem interdisciplinar do conhecimento. 2. Saúde -Pesquisa -Brasil. I. Silva Neto, Benedito Rodrigues da. II. Série. CDD 610.7 Elaborado por Maurício Amormino Júnior -CRB6/2422 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. 2019 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.