Conservation of minimally processed pinhão using chitosan and gelatin coatings

O processamento mínimo do pinhao ocasiona aumento na perda de massa, deterioraçao fisiológica e crescimento de microrganismos. Assim, objetivou-se com este estudo avaliar a conservaçao de pinhao mínimamente processado usando revestimentos de quitosana e gelatina. Os pinhöes foram minimamente process...

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Published inBrazilian Journal of Food Technology Vol. 25; pp. 1 - 11
Main Authors Carrasco, Pérsia Barcellos, de Oliveira, Viviane Souza, Gonçalvez, Glória Caroline Paz, Gandra, Eliezer Avila, Mendonça, Carla Rosane Barboza, Borges, Caroline Dellinghausen
Format Journal Article
LanguageEnglish
Published Campinas Instituto de Tecnologia de Alimentos (ITAL) 2022
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Abstract O processamento mínimo do pinhao ocasiona aumento na perda de massa, deterioraçao fisiológica e crescimento de microrganismos. Assim, objetivou-se com este estudo avaliar a conservaçao de pinhao mínimamente processado usando revestimentos de quitosana e gelatina. Os pinhöes foram minimamente processados e revestidos com quitosana, gelatina e quitosana/gelatina, pela técnica camada sobre camada. Em seguida, foram secos sob ventilaçao forçada, acondicionados em embalagem de polietileno tereftalato e estocados a 4 °C por 10 dias. Foram realizadas análises de perda de massa, pH, açúcares redutores, vitamina C e cor, além de análises microbiológicas e análise sensorial. Benefícios foram observados com o uso dos revestimentos de quitosana e gelatina, especialmente quando aplicados pela técnica camada sobre camada. A melhor combinaçao de resultados foi obtida com a aplicaçao do revestimento quitosana/gelatina, que possibilitou a reduçao da perda de massa e do crescimento de fungos e bactérias psicrotróficas aeróbias. O revestimento nao retardou o processo de maturaçao e, consequentemente, maiores teores de vitamina C foram obtidos. Os revestimentos nao influenciaram o sabor e o aroma dos pinhöes mínimamente processados. O processamento mínimo pode incentivar o consumo da semente e, além disso, a conservaçao, utilizando revestimento comestível å base de quitosana/gelatina pela técnica layerby-layer, associado å refrigeraçao, ampliou a vida útil das sementes.
AbstractList O processamento mínimo do pinhao ocasiona aumento na perda de massa, deterioraçao fisiológica e crescimento de microrganismos. Assim, objetivou-se com este estudo avaliar a conservaçao de pinhao mínimamente processado usando revestimentos de quitosana e gelatina. Os pinhöes foram minimamente processados e revestidos com quitosana, gelatina e quitosana/gelatina, pela técnica camada sobre camada. Em seguida, foram secos sob ventilaçao forçada, acondicionados em embalagem de polietileno tereftalato e estocados a 4 °C por 10 dias. Foram realizadas análises de perda de massa, pH, açúcares redutores, vitamina C e cor, além de análises microbiológicas e análise sensorial. Benefícios foram observados com o uso dos revestimentos de quitosana e gelatina, especialmente quando aplicados pela técnica camada sobre camada. A melhor combinaçao de resultados foi obtida com a aplicaçao do revestimento quitosana/gelatina, que possibilitou a reduçao da perda de massa e do crescimento de fungos e bactérias psicrotróficas aeróbias. O revestimento nao retardou o processo de maturaçao e, consequentemente, maiores teores de vitamina C foram obtidos. Os revestimentos nao influenciaram o sabor e o aroma dos pinhöes mínimamente processados. O processamento mínimo pode incentivar o consumo da semente e, além disso, a conservaçao, utilizando revestimento comestível å base de quitosana/gelatina pela técnica layerby-layer, associado å refrigeraçao, ampliou a vida útil das sementes.
Abstract The minimal processing of pinhão causes an increase in mass loss, physiological deterioration and the growth of microorganisms. Thus, this study aimed to evaluate the conservation of minimally processed pinhão using edible chitosan and gelatin coatings. The pinhões were minimally processed and coated with chitosan, gelatin and chitosan/gelatin using the Layer-by-Layer (LbL) technique. They were then dried under forced ventilation, packaged in a polyethylene terephthalate package and stored at 4 °C for 10 days. The analyses performed were weight loss, pH, reducing sugars, vitamin C, color, microbiological analysis and sensory analysis. Benefits were observed with the use of chitosan and gelatin coatings, especially when applied using the LbL technique. The best combination of results was obtained with the application of the chitosan/gelatin coating, mainly reduction of weight loss and inhibition of growth of fungi and aerobic psychrotrophic bacteria. The coating did not retard the maturation process, thus, higher vitamin C contents were obtained. The coatings did not influence the taste and aroma of minimally processed pinhão. Minimal processing can encourage the consumption of seeds, besides this, the conservation using edible coating based on chitosan/gelatin, applied with the LbL technique associated with refrigeration, extended their shelf life.
Author de Oliveira, Viviane Souza
Gonçalvez, Glória Caroline Paz
Gandra, Eliezer Avila
Borges, Caroline Dellinghausen
Mendonça, Carla Rosane Barboza
Carrasco, Pérsia Barcellos
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Snippet O processamento mínimo do pinhao ocasiona aumento na perda de massa, deterioraçao fisiológica e crescimento de microrganismos. Assim, objetivou-se com este...
Abstract The minimal processing of pinhão causes an increase in mass loss, physiological deterioration and the growth of microorganisms. Thus, this study aimed...
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SubjectTerms Araucaria angustifolia (Bertoloni) Otto Kuntze
Aroma
Ascorbic acid
Chitosan
Coatings
Conservation
Edible coating
Fungi
Gelatin
Layer-by-layer
Microbiological analysis
Microorganisms
pH effects
Polyethylene
Polyethylene terephthalate
Psychrotrophic
Psychrotrophic bacteria
Refrigeration
Seed
Seeds
Sensory evaluation
Shelf life
Sugar
Weight loss
Weight reduction
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Title Conservation of minimally processed pinhão using chitosan and gelatin coatings
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