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      Aspectos tecnológicos de alimentos funcionais contendo probióticos Translated title: Technological aspects of functional foods containing probiotics

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          Abstract

          Os alimentos funcionais constituem hoje prioridade de pesquisa em todo mundo com a finalidade de elucidar as propriedades e os efeitos que estes produtos podem apresentar na promoção da saúde. As bactérias probióticas são microrganismos vivos que, quando consumidos, exercem efeitos benéficos sobre o hospedeiro conferindo propriedades à microbiota endógena. Algumas propriedades benéficas atribuídas às culturas probióticas necessitam de estudos mais controlados para serem definitivamente esclarecidas. Neste artigo são enfocados os aspectos tecnológicos dos probióticos, os efeitos associados ao consumo de produtos contendo probióticos e as principais cepas empregadas. São apresentados resultados experimentais originais para ilustrar os aspectos tecnológicos da fabricação de alimentos contendo probióticos buscando descrever suas limitações e alternativas.

          Translated abstract

          Functional food science is being considered priority of research nowadays and studies are directed towards attempts to elucidate their proprieties and effects in promoting health. Probiotics are viable microbial dietary supplements that have beneficial effects over the health of the host by means of modulation of the intestinal microflora. Some beneficial properties attributed to probiotic microorganisms still need more controlled studies to be definitely established. This article deals with technology aspects related to probiotics, the effects associated with the consumption of food products containing these microorganisms and the main strains employed for that purpose. Experimental data are also presented in order to illustrate technological aspects of the manufacture of food products containing probiotics, intending to describe their limitations and alternatives.

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          Probiotic bacteria: safety, functional and technological properties.

          During the past two decades probiotic (health promoting) micro-organisms have been increasingly included in various types of food products, especially in fermented milks. Several aspects, including safety, functional and technological characteristics, have to be taken into consideration in the selection process of probiotic micro-organisms. Safety aspects include specifications such as origin (healthy human GI-tract), non-pathogenicity and antibiotic resistance characteristics. Functional aspects include viability and persistence in the GI-tract, immunomodulation, antagonistic and antimutagenic properties. Before probiotic strains, chosen on the basis of their good safety and functional characteristics, can benefit the consumer, they must first be able to be manufactured under industrial conditions. Furthermore, they have to survive and retain their functionality during storage, and also in the foods into which they are incorporated without producing off-flavours. Factors related to the technological and sensory aspects of probiotic food production are of utmost importance since only by satisfying the demands of the consumer can the food industry succeed in promoting the consumption of functional probiotic products in the future.
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            Probiotic bacteria: selective enumeration and survival in dairy foods.

            A number of health benefits have been claimed for probiotic bacteria such as Lactobacillus acidophilus, Bifidobacterium spp., and Lactobacillus casei. Because of the potential health benefits, these organisms are increasingly incorporated into dairy foods. However, studies have shown low viability of probiotics in market preparations. In order to assess viability of probiotic bacteria, it is important to have a working method for selective enumeration of these probiotic bacteria. Viability of probiotic bacteria is important in order to provide health benefits. Viability of probiotic bacteria can be improved by appropriate selection of acid and bile resistant strains, use of oxygen impermeable containers, two-step fermentation, micro-encapsulation, stress adaptation, incorporation of micronutrients such as peptides and amino acids and by sonication of yogurt bacteria. This review will cover selective enumeration and survival of probiotic bacteria in dairy foods.
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              Overview of gut flora and probiotics

              Scientific developments in recent years have opened new frontiers and enable a better understanding of the gastrointestinal tract (GIT) as a complex and delicately balanced ecosystem. This paper focuses on more recent information related to the microbial population of the GIT and its functional role in human physiology and health. Special attention is also given to modern approaches for improving or stabilising the intestinal system and its functioning by the deliberate application of viable microbial cultures, so-called 'probiotics', selected for special functional properties.
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                Author and article information

                Journal
                rbcf
                Revista Brasileira de Ciências Farmacêuticas
                Rev. Bras. Cienc. Farm.
                Divisão de Biblioteca e Documentação do Conjunto das Químicas da Universidade de São Paulo (São Paulo, SP, Brazil )
                1516-9332
                March 2002
                : 38
                : 1
                : 1-21
                Affiliations
                [01] orgnameUniversidade de São Paulo orgdiv1Faculdade de Ciências Farmacêuticas orgdiv2Departamento de Tecnologia Bioquímico-Farmacêutica
                Article
                S1516-93322002000100002 S1516-9332(02)03800102
                10.1590/S1516-93322002000100002
                0a02ba2d-c1e9-489f-9d3d-1db1ed487b1e

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 29 June 2001
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 102, Pages: 21
                Product

                SciELO Brazil

                Categories
                Trabalhos de Revisão

                Nutracêutico,Lactobacillus spp,Bifidobacterium spp,Functional foods,Probiotics,Nutraceutical,Alimentos funcionais,Probióticos

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