Physical Chemical Analyses
Mostrando 1-12 de 278 artigos, teses e dissertações.
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1. Synthesis and Molecular Modeling Study of Two Bromo-Dimethoxybenzaldehydes
This work describes the synthesis, molecular structure, and packaging of the compounds 6-bromo-2,3-dimethoxybenzaldehyde (6-BRB) and 5-bromo-2,3-dimethoxybenzaldehyde (5 BRB). Characterization in the solid-state was carried out by X-ray diffraction, and the analysis of the interactions was described by the Hirshfeld surface, which helps in understanding the
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Determination of physical and chemical properties of kombucha teas prepared with different herbal teas
Abstract In this research, kombucha tea was prepared using 5 different tea extracts and physicochemical and sensory analyses were made. The tea extracts used are black tea, green tea, sage, linden and mint, respectively. The prepared tea samples were subjected to fermentation for 14 days. In tea samples, pH, electrical conductivity, water-soluble solid and p
Food Sci. Technol. Publicado em: 2021-06
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3. Effect of processing, storage and type of glass packaging on the quality of jelly produced from a Brazilian Cerrado fruit
Abstract The objective of this study was to prepare a jelly with the pulp of curriola as raw material and evaluate the effect of processing, type of glass packaging (transparent and amber) and storage time on the quality of the jelly by means of physical (color), chemical (proximal composition, total soluble solids, titratable acidity and pH), microbiologica
Food Sci. Technol. Publicado em: 2020-12
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4. Physical-chemical characterization, microbiological and biocompounds of cashew pulp in industrial and freezing processing
Abstract This study aimed to evaluate the nutritional characteristics, bioactive compounds and microbiological quality during the processing and frozen storage of cashew pulps. Cashew pulps from 4 batches and 3 different sequential stages of industrial processing and storage (after pulping, after pulp thawing that was stored for 3 months in a drum, and 90 da
Food Sci. Technol. Publicado em: 2020-09
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5. MATHEMATICAL MODELING FOR DETERMINATION OF THE MAXIMUM MASS TRANSFER CAPACITY OF COWPEA BEANS
ABSTRACT Cowpea beans are of great socioeconomic expression for the rural population in North and Northeastern Brazil. This legume is rich in essential nutrients and exhibits great resistance to water stress. However, for grain processing, it is fundamental to study legume behavior during the hydration process. This study aims to evaluate the mass transfer o
Eng. Agríc.. Publicado em: 2020-04
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6. Physical-chemical characterization, microbiological and biocompounds of cashew pulp in industrial and freezing processing
Abstract This study aimed to evaluate the nutritional characteristics, bioactive compounds and microbiological quality during the processing and frozen storage of cashew pulps. Cashew pulps from 4 batches and 3 different sequential stages of industrial processing and storage (after pulping, after pulp thawing that was stored for 3 months in a drum, and 90 da
Food Sci. Technol. Publicado em: 20/12/2019
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7. SISTEMAS PEDOGEOMORFOLÓGICOS NA INTERPRETAÇÃO DA EVOLUÇÃO DE PAISAGENS QUATERNÁRIAS EM CLIMAS TROPICAIS ÚMIDOS
Resumo As relações entre solo e relevo são constantes em paisagens de climas tropicais e subtropicais úmidos, devido aos espessos mantos regolíticos resultantes de acelerado intemperismo físico, químico e biológico. A investigação dos sistemas pedogeomorfológicos merece destaque em análises sistêmicas, que objetivam o estudo da gênese e dos pro
Mercator (Fortaleza). Publicado em: 09/12/2019
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8. Proposal for an index of water quality for micro-watersheds under silviculture management
Resumo Neste trabalho objetivou-se elaborar um Índice de Qualidade das Águas (IQA) para o setor florestal. Para isso, monitoraram-se as características físicas e químicas da água: Ca, Cu, Fe, K, Mg, Na, P, S, Zn, CI, CO, Clor, Nitr, Sulf, Fosf, Amô, Glif, Alca, CE, Cor, DQO, DC, DC, OD, SS, SD, Sulfl, Temp, Turb e pH, em quatro microbacias hidrográfi
Ciênc. Florest.. Publicado em: 02/12/2019
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9. Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes
In this study, the hybrid corona-dielectric barrier discharge plasma treatment was employed to modify the physical, chemical and morphological characteristics of a half-knitted fabric composed of 92% polyamide 6.6 and 8% elastane (PA). These properties of the fabric were evaluated by the water contact angle, x-ray diffraction, infrared spectroscopy, scanning
Mat. Res.. Publicado em: 28/11/2019
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10. Características físico-químicas de sucos integrais elaborados a partir de uvas da espécie Vitis rotundifolia
Resumo Objetivou-se com este trabalho avaliar o perfil físico-químico de sucos elaborados com uvas das variedades Vitis rotundifolia Regale, Noble, Summit e Carlos. O trabalho foi realizado na Epagri-Videira/SC, nas safras 2016, 2017 e 2018. O delineamento experimental utilizado foi um fatorial duplo (variedade × safra), de forma inteiramente casualizada
Braz. J. Food Technol.. Publicado em: 14/11/2019
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11. Sensory acceptance and characterization of yoghurt supplemented with yacon syrup and cashew apple extract as a source of bioactive compounds
Resumo O xarope de yacon (XY) e o extrato concentrado de caju (ECC) são produtos que apresentam elevadas concentrações de compostos bioativos, como fruto-oligossacarídeos e carotenoides, que exibem propriedades prebióticas e antioxidantes. O objetivo deste trabalho foi avaliar o impacto de XY e ECC nas características químicas, físicas, físico-quím
Braz. J. Food Technol.. Publicado em: 24/10/2019
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12. Proposal of a trophic state index in semiarid reservoirs using data of the Banabuiú Basin, state of Ceará, Brazil
Resumo Objetivo O presente trabalho teve como objetivo desenvolver um Índice de Estado Trófico que simule o impacto cumulativo em 18 reservatórios da bacia hidrográfica do Banabuiú, localizada no semiárido cearense. Métodos Foram analisadas variáveis físicas (temperatura, transparência e turbidez), químicas (oxigênio dissolvido, pH e fósforo t
Acta Limnol. Bras.. Publicado em: 21/10/2019