ABSTRACT
This work aimed to produce a new calcium alginate-Capsul edible film with antioxidant incorporated in matrix. The vitaminic stability was evaluated in the films during their storage under different conditions for 140 days. The films were characterized with respect to their mechanical properties and surface morphology. The results indicated a 25.6% of vitamin C incorporation in matrix during the film preparation. The films stored under refrigeration in the dark did not show a decrease in the vitaminic retention. The films stored under room temperature in the dark and in the bright/dark cycles exhibited significant decreases in the vitamin retaining from the 84th and 70th days, respectively. The vitamin C addition significantly decreased the tensile strength in the new pellicle. The results of the microscopy revealed a cohesive matrix in the new edible films. These results support the utilization of the new pellicle to protect ingredients, although more studies are necessary.
Subject(s)
Alginates/chemistry , Ascorbic Acid/chemistry , Antioxidants/chemistry , Chemistry, Physical , Chitin , Dosage Forms , Food Preservation , Glucuronic Acid/chemistry , Hexuronic Acids/chemistry , Microscopy, Electron, Scanning , Oxygen/chemistry , Permeability , Solubility , Temperature , Time FactorsABSTRACT
Este trabalho teve como objetivo avaliar as características físico-químicas, sensoriais e instrumentais de queijo Minas Frescal de leite de búfala elaborado com leites de diferentes teores de gordura. Os queijos foram elaborados a partir de leite de búfala com 21,5, 11,5 e 6 por cento de gordura. A análise físico-química indicou que, mesmo com a remoção parcial da gordura, os queijos mantiveram um valor nutricional adequado. A análise descritiva mostrou que houve diferença significativa em oito atributos dos 17 estabelecidos pela equipe sensorial. Os teores de gordura alteraram a cor e a maciez instrumentais dos queijos. Apesar das diferenças nas análises sensorial e instrumental, não houve diferença significativa na preferência dos provadores entre os queijos.
Subject(s)
Animals , Dairying , Food Quality , Milk , Nutritive Value , Chemical Phenomena , Cheese/analysis , Buffaloes , Consumer Product SafetyABSTRACT
Avalia a qualidade microbiológica, físico-química e sensorial de algumas marcas de suco de laranja fresco envasado em garrafas plásticas. Quatro marcas de suco fresco provenientes de estabelecimentos diferentes foram analisadas. Realizou-se análise microbiológica, físico-química e sensorial. Os resultados do estudo mostraram que todas as amostras apresentaram coliformes totais e apenas duas apresentaram coliformes de origem fecal, porém em quantidades aceitáveis pela legislação brasileira. Todas as amostras estavam dentro dos padrões físico-químicos estabelecidos. No teste sensorial verificou-se que uma das amostras obteve a maior aceitação entre os provadores. Houve diferença sensorial significativa de todas as amostras comercializadas em relação à amostra padrão de suco fresco não envasado. Os resultados indicaram que a qualidade microbiológica e físico-química do suco influenciou diretamente nas características sensoriais do suco do mesmo. Por isso, a conservação adequada é muito importante para garantir ao consumidor um sabor original e agradável do suco de laranja fresco.
Subject(s)
Fruit , PlasticsABSTRACT
Spirulina (Arthrospira), a filamentous, unicellular alga, is a cyanobacterium grown in certain countries as food for human and animal consumption. It is also used to derive additives in pharmaceuticals and foods. This alga is a rich source of proteins, vitamins, amino acids, minerals, and other nutrients. Its main use, therefore, is as a food supplement. Over the last few years, however, it has been found to have many additional pharmacological properties. Thus, it has been experimentally proven, in vivo and in vitro that it is effective to treat certain allergies, anemia, cancer, hepatotoxicity, viral and cardiovascular diseases, hyperglycemia, hyperlipidemia, immunodeficiency, and inflammatory processes, among others. Several of these activities are attributed to Spirulina itself or to some of its components including fatty acids omega-3 or omega-6, beta-carotene, alpha-tocopherol, phycocyanin, phenol compounds, and a recently isolated complex, Ca-Spirulan (Ca-SP). This paper aims to update and critically review the results published over the last few years with regards to these properties. The conclusion is that even if this cyanobacterium has been one of the most extensively studied from the chemical, pharmacological and toxicological points of view, it is still necessary to expand the research in order to have more consistent data for its possible use in human beings.
Subject(s)
Bacterial Proteins/pharmacology , Dietary Supplements , Animals , Bacterial Proteins/therapeutic use , Humans , SpirulinaABSTRACT
Spirulina (Arthrospira), a filamentous, unicellular alga, is a cyanobacterium grown in certain countries as food for human and animal consumption. It is also used to derive additives in pharmaceuticals and foods. This alga is a rich source of proteins, vitamins, amino acids, minerals, and other nutrients. Its main use, therefore, is as a food supplement. Over the last few years, however, it has been found to have many additional pharmacological properties. Thus, it has been experimentally proven, in vivo and in vitro that it is effective to treat certain allergies, anemia, cancer, hepatotoxicity, viral and cardiovascular diseases, hyperglycemia, hyperlipidemia, immunodeficiency, and inflammatory processes, among others. Several of these activities are attributed to Spirulina itself or to some of its components including fatty acids omega-3 or omega-6, beta-carotene, alpha-tocopherol, phycocyanin, phenol compounds, and a recently isolated complex, Ca-Spirulan (Ca-SP). This paper aims to update and critically review the results published over the last few years with regards to these properties. The conclusion is that even if this cyanobacterium has been one of the most extensively studied from the chemical, pharmacological and toxicological points of view, it is still necessary to expand the research in order to have more consistent data for its possible use in human beings.
