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      Armazenamento de figo-da-índia em pó Translated title: Storage of the prickly pear powder

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          Abstract

          Neste trabalho foram avaliadas a estabilidade do figo-da-índia em pó acondicionado em embalagens laminadas durante 100 dias de armazenamento, sob condições controladas de temperatura e umidade relativa e as amostras a cada 20 dias, por meio do teor de água, atividade de água, acidez total titulável, açúcares redutores e cor (luminosidade, intensidade de vermelho e de amarelo). Observou-se que as embalagens laminadas não evitaram a absorção de água, enquanto a atividade de água aumentou e os açúcares redutores diminuíram com o tempo; por outro lado, a acidez total titulável diminuiu mas apenas nos primeiros vinte dias; enfim, todas as amostras sofreram escurecimento durante o armazenamento.

          Translated abstract

          The stability of the prickly pear power packed in laminated roll for 100 days storage under controlled temperature and relative humidity was evaluated. The material was evaluated every 20 days, through the moisture content, water activity, total acidity, sugars and color (brightness, red and yellow colour intensity). It was found during storage of powder samples, that the laminated packaging did not prevent the water absorption, while water activity increased and reduced sugars decreased with time, the total acidity decreased in the first twenty days, keeping stable thereafter in all samples and there was a darkening of the powder samples stored at 40 ºC.

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          Most cited references26

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          Functional properties of anthocyanins and betalains in plants, food, and in human nutrition

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            The isolation and properties of a concentrated red-purple betacyanin food colourant fromOpuntia stricta fruits

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              Biothiols, taurine, and lipid-soluble antioxidants in the edible pulp of Sicilian cactus pear (Opuntia ficus-indica) fruits and changes of bioactive juice components upon industrial processing.

              Biothiols, taurine, and flavonols, as well as tocopherols and carotenoids have been assessed in the edible pulp of Sicilian red (Sanguigna), yellow (Surfarina), and white (Muscaredda) cultivars of cactus pear. The yellow cultivar has the highest level of reduced glutathione (GSH, 8.1 +/- 0.78 mg/100 g pulp), whereas the white cultivar showed the highest amount of cysteine (1.21 +/- 0.12 mg/100 g pulp). Taurine accounted for 11.7 +/- 1.0 mg/100 g in the yellow pulp, while lower levels were measured in the others. With the exception of kaempferol in the yellow cultivar (2.7 +/- 0.2 microg/100 g pulp), the edible pulp of cactus pear was not a source of flavonols. Very low amounts of lipid-soluble antioxidant vitamins such as vitamin E and carotenoids were measured in all cultivars. As a consequence of industrial processing, a total loss of GSH and beta-carotene and a net decrease of vitamin C and cysteine were revealed in the fruit juice, whereas betalains, taurine, and vitamin E appeared to be less susceptible to degradation.
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                Author and article information

                Journal
                rbeaa
                Revista Brasileira de Engenharia Agrícola e Ambiental
                Rev. bras. eng. agríc. ambient.
                Departamento de Engenharia Agrícola - UFCG (Campina Grande, PB, Brazil )
                1415-4366
                1807-1929
                February 2012
                : 16
                : 2
                : 216-221
                Affiliations
                [02] Campina Grande PB orgnameUFCG orgdiv1UAEA rossana@ 123456deag.ufcg.edu.br
                [01] Crato CE orgnameCENTEC orgdiv1CVTEC
                Article
                S1415-43662012000200013 S1415-4366(12)01600213
                535cfee8-2902-4ba3-8a08-3bb224648e62

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

                History
                : 19 December 2011
                : 19 April 2011
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 26, Pages: 6
                Product

                SciELO Brazil

                Self URI: Texto completo somente em PDF (PT)
                Categories
                Armazenamento e Processamento de Produtos Agrícolas

                shel life,Opuntia fícus-indica,embalagem,vida de prateleira,Opuntia ficus-indica,packing

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