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AesumoA nanotecnologia tem grande potencial de aplicação na indústria de alimentos. No desenvolvimento de embalagens, pode proporcionar diferentes alternativas, tais como o desenvolvimento de nanopartículas, nanodispersões, nanolaminados, e nanotubos, que, associados aos polímeros, podem fornecer diversas funções. Por exemplo, pela incorporação de nanopartículas com propriedades antimicrobianas; nanosensores capazes de detectar produtos químicos, agentes patogênicos e toxinas em alimentos; nanopartículas bioativas capazes de manter os compostos em condições ideais, até a sua migração para o produto alimentício e nanocompósitos, que melhorem as propriedades de flexibilidade, barreira a gases e umidade e quanto à absorção de irradiação UV dos materiais aos quais são incorporados, assim como a estabilidade frente à temperatura. Este artigo relata algumas aplicações da nanotecnologia em embalagens de alimentos, bem como questões sobre toxicidade e regulamentação relacionadas à possibilidade de migração das nanopartículas para os alimentos; razão pela qual o setor alimentício tem sido cauteloso com a utilização desses materiais. Palavras-chave: toxicidade, regulamentação, nanopartículas, embalagem ativa, embalagem inteligente. AbstractNanotechnology has great application potential in the food industry. In packaging development, it can provide several alternatives, such as the formation of nanoparticles, nanodispersions, nanolayered and nanotubes, which, associated with polymers, can provide multiple functions. For example, by embedding nanoparticles with antimicrobial properties; nanosensors capable of detecting chemicals products, pathogens and toxins in food; bioactive nanoparticles capable of maintaining compounds at optimal conditions until its migration to the food product and nanocomposites, which improve the properties of flexibility, gas and humidity barrier and UV irradiation absorption of the materials to which are incorporated, as well as stability against temperature. This article reports some applications of nanotechnology in food packaging, as well as questions regarding toxicity and regulations related to the migration of nanoparticles to the food products; reason why the food industry has been cautious with the utilization of these materials.Keywords: toxicity, regulation, nanoparticles, active packaging, intelligent packaging. IntroduçãoAtualmente, grande parte das embalagens utilizadas no setor alimentício é de plástico, produzidas com base em polímeros oriundos do petróleo. Em geral, na comparação com outros materiais como papel, madeira, metais, vidros e cerâmicas, as embalagens plásticas destacam-se pelas vantagens que apresentam quanto às características físico-mecânicas como peso, flexibilidade, resistência mecânica, bem como outras características físico-químicas e biológicas, vinculada à qualidade, saúde e segurança, algumas das quais serão abordadas mais adiante. Em conjunto, essas características além de proporcionarem vantagens significativas no processamento de embalagens e adição de valo...

Psyllium is a soluble fiber that has aroused the interest of several researchers for presenting proven functional benefits such as reducing LDL cholesterol, controlling blood glucose, delaying gastric emptying time among others. This study aimed to elaborate a banana pulp added psyllium and verify the effect on the physicochemical parameters (pH, total titratable acidity, color and rheology) during 90 days of storage under different temperatures (- 8 °C and – 18 °C). The results showed that the addition of 3% psyllium altered some parameters: the pH did not present a significant difference at time 0, but at times 30 and 60 it showed a difference and at the end of storage it did not show any difference, the ATT did not change at time 0 , but from time 30 it showed a significant decrease until the end of the storage period, the psyllium having a darker color than the banana reduced the luminosity (L *), it was verified that the addition of psyllium increased the apparent viscosity of the pulp. Psyllium has the potential to be used in banana pulp, since the changes in pH and TTA did not affect the quality of the product and meet the recommended by the current quality and identity standard for banana pulp, being a viable product with functional properties that can receive health claims.

A frozen banana pulp with functional properties was developed and characterized in this work. For this, 0 g, 3 g, 5 g and 7 g of psyllium in 100 g of banana pulp were added. The use of this fiber in industrialized products can contribute to the nutritional enrichment of the products and provide functional benefits already acknowledged, such as lowering LDL cholesterol, lowering blood glucose, increasing satiety and relieving constipation. According to the World Health Organization, vegetable consumption should be increased, as it reduces the risk of chronic diseases. The main purpose of this work was to incorporate psyllium in frozen banana pulp to develop a healthy product. The samples were evaluated through chemical analyses, rheological properties and sensory testing with Check-All-That-Apply questions (CATA). The addition of psyllium had a significant effect not only on the viscosity but also on the sensory and nutritional properties of the frozen banana pulp. This study indicated that the production of frozen banana pulp with psyllium is viable, as it has desirable nutritional and sensory characteristics which can contribute to the maintenance of health.

Increased blood pressure is one of the main risk factors for cardiovascular disease. The World Health Organization (WHO) recommends that sodium intake should be moderate and potassium intake can be increased, as its intake is associated with a lower incidence of cardiovascular disease. Banana is a fruit rich in potassium and has large post-harvest losses due to its perishability. The production of frozen pulps is an alternative to reduce these losses. To add nutritional and functional benefits to the fruit pulp, it is possible to add soluble fiber, since its high intake is known to have a protective effect against cardiovascular disease and its intake by individuals does not meet the recommended minimum. There is evidence that psyllium dietary fiber contributes to lowering blood pressure, lowering cholesterol, lowering blood glucose and its incorporation into foods may offer health benefits such as preventing high blood pressure. Knowing that sodium and potassium intake is related to blood pressure, this study aimed to investigate the content of the minerals sodium and potassium in frozen banana pulp added with psyllium and to verify the concentrations of bioaccessibility in in vitro digestion. Our results showed that the addition of psyllium contributed to an increase in the content of the minerals potassium and sodium and that after the simulated digestions we verified that the final concentrations of the mineral potassium are in agreement with other results present in the literature, we also saw that despite increasing the sodium content, the final concentration of the dialysate (which would be absorbed by the human body) was 0.17%, being very low and ideal for preventing high blood pressure.