O trabalho estabelece a relação entre as diretrizes das políticas públicas de saúde brasileiras e os critérios adotados pela Anvisa para aprovação das alegações de propriedades funcionais e, ou, de saúde para alimentos e para substâncias bioativas e probióticos isolados. Comenta a legislação brasileira sobre alimentos com alegações de propriedades funcionais e, ou, de saúde, novos alimentos e substâncias bioativas e probióticos isolados, evidenciando a obrigatoriedade de registro destes produtos junto aos órgãos competentes. Apresenta as diretrizes da Política Nacional de Alimentação e Nutrição, Política Nacional de Promoção da Saúde, Guia Alimentar para a População Brasileira e Estratégia Global sobre Dieta, Atividade Física e Saúde da Organização Mundial de Saúde. Ressalta a convergência das diretrizes destas políticas que objetivam a redução das doenças crônicas não-transmissíveis na população através da promoção da alimentação saudável e da atividade física. Destaca as orientações direcionadas aos governos e à indústria para a implementação dessas medidas. Apresenta critérios de avaliação da base científica das alegações propostos por órgãos internacionais. Objetiva oferecer subsídios para o entendimento da influência da tecnologia de alimentos sobre a saúde pública e para o entendimento dos critérios adotados pela Anvisa, na avaliação das alegações de propriedades funcionais e de saúde. This article establishes the relationship between public health policies in Brazil and the criteria adopted by Anvisa for the approval of functional property claims and, or, of health for food and for bioactive substances and isolated products. It also comments on Brazilian Legislation about functional property claimed food and, or, on healthy claimed food, new foods, bioactive substances and isolated probiotics, emphasizing the obligation to registering such products before the competent agencies. It presents the National Feeding and Nutrition Policies directives, National Policy for Health Promotion, Feeding Guide for the Brazilian Population and Global Strategy on Diet, Physical Activity and Health under the scope of World Health Organization. It enhances the convergence of directives of these policies that focus on the reduction of non-transmissible chronic diseases in the public by means of healthy feeding and physical activity. It highlights the orientations directed to governments and to the industry so as to implement these procedures. Through the presentation of evaluation criteria for the scientific basis of the claims, proposed by international agencies, it aims at offering subsidies for the understanding of the food technology over public health, and for the understanding of the criteria adopted by Anvisa for the evaluation of functional property claims and health

This study focuses on optimizing the ultrasound-assisted extraction (UAE) of bioactive compounds from purple-fleshed sweet potatoes (PFSP) for potential use as natural colorants. Factors such as time, temperature, and solid-to-liquid ratio were varied using a Box–Behnken Design. The optimal conditions were determined as 75 min, 70 °C, and a 1:15 m/v solid-to-liquid ratio, resulting in 18.372 mg/100 g total anthocyanin (TA) and 151.160 mg GAE/100 g total phenolic content (TPC). The validation yielded 18.822 mg/100 g for total anthocyanin and 162.174 mg GAE/100 g for total phenolic content, showing a 7% difference from predictions. UAE significantly increased TA extraction by 81% and TPC by 93% compared with the conventional method, with a notable reduction in process time from 24 h to 75 min. Additionally, three kinetic models were tested to compare extraction mechanisms, confirming the efficiency of UAE for PFSP bioactive compound recovery. This study proposes the UAE technique as a highly effective means of extracting bioactive compounds from PFSP, offering promising applications across multiple industries.

Cocoa beans contain a variety of nutritional compounds and are rich in biologically active substances. The aim of this study was to utilize cocoa nibs (roasted and unroasted) as the main ingredient in the development of an attractive and convenient product. The produced nibs were analyzed for total phenolics, flavonoids, and antioxidant capacity using DPPH, ABTS, and FRAP methods. The primary phenolic compounds and methylxanthines were analyzed by LC/MS. Subsequently, cereal bars were developed, including a control sample (without nibs) and five formulations containing 41% nibs, using various proportions of roasted and unroasted nibs. The influence of the origin of the beans on the product characteristics was also evaluated. The results showed that the roasting process led to a reduction in epicatechin, caffeine, and caffeic acid. Furthermore, the reduction in total phenolics, flavonoids, and antioxidant capacity after roasting was more pronounced in beans from Bahia compared to those from Espírito Santo. Regarding the cereal bars, the results demonstrated that using cocoa from Bahia, the formulation with a higher proportion of unroasted nibs (F80) significantly increased the total phenolic content (1968.85 mg of gallic acid/100 g) and total flavonoids (39.26 mg of quercetin/100 g). This initial study suggests that the use of cocoa nibs as a functional ingredient in cereal bars may be a viable and advantageous option for creating a product with greater antioxidant potential.

Os corante em pó obtido a partir do extrato antociânico de açaí foi aplicado nos sistemas alimentícios iogurte, queijo tipo petit suisse, bebida isotônica líquida e bebida isotônica em pó. Além do açaí, usou-se como testemunhas corante formulado com capim gordura (Mellinis minutiflora, Pal de Beauv) e antocianina comercial de uva. Entre os alimentos testados, o único que não se mostrou apropriado foi a bebida isotônica na forma líquida, em que o corante sofreu rápida degradação. A formulação feita nesse trabalho utilizando maltodextrina e antocianina de açaí mostrou-se mais eficiente que a formulação comercial de enocianina, com menor alteração nas coordenadas colorimétricas ao longo do tempo.

The viability of Lactobacillus rhamnosus GG (LGG) in jabuticaba juices and its survival in the gastrointestinal tract (GIT), simulated in vitro, was studied. Two juices were prepared: A - with non-blanched fruits, and B - with blanched fruits. LGG was then added and the juices maintained at 8 ºC for 28 days. The control treatment consisted of juices without the added probiotic. The following were determined in the juices: the viability and in vitro survival of LGG, fecal coliforms, Salmonella sp., pH, acidity, total soluble solids (TSS), color, antioxidant capacity, total phenolic compounds, anthocyanins and ascorbic acid. The sensory acceptability was also determined using a 9-point hedonic scale. Blanching interfered (p < 0.05) with the viability of LGG, juice A showing the greatest viability as compared to juice B. After in vitro simulation, the probiotic bacterial count was < 1.0 log CFU mL-1, which demonstrates the low resistance of the strain to the simulated GIT conditions. The juices were conformed to the microbiological standards established by law. The pH, acidity and TSS were influenced by blanching (p < 0.05), with values of 5.03, 0.46% and 15.38 °Brix for juice A and 5.12, 0.66% and 16.05 °Brix for juice B, respectively. The addition of LGG did not influence these characteristics. Only the pH value was influenced by the storage time (p < 0.05), increasing throughout storage. Juice B showed lower luminosity (L*) and a greater value for a* as compared to juice A, indicating that the former became darker and redder due to the blanching process. Both juices showed positive values for the b* coordinate. The juice was found to be a good source of polyphenols. Neither the time nor the addition of LGG affected the antioxidant capacity, total phenolic compounds or anthocyanin contents. However, blanching contributed (p < 0.05) to an increase in the contents of these compounds in the juices. Values for antioxidant capacity of 186.20 and 2552.59 uM Trolox g-1, for total phenolic compounds of 275.06 and 1163.18 mg GAE 100 g-1-wwb, and for anthocyanins as cyanidin 3-glucoside of 12.71 and 90.99 mg 100 g-1 were found for juices A and B, respectively. The juices contained 72.87 mg 100 mL-1 of ascorbic acid. Scores of above 6.0 (liked slightly) were awarded on the hedonic scale for the attributes evaluated. The addition of probiotics in jabuticaba juices needs to be further studied to ensure the viability of the cultures during storage and their survival in the gastrointestinal tract.

Com este trabalho se objetivou avaliar a potencialidade da análise de componentes principais para a interpretação de resultados de um experimento com microencapsulamento de pequi. O experimento foi realizado no laboratório de Tecnologia de Frutas e Hortaliças do Departamento de Engenharia de Alimentos da Universidade Federal de Viçosa. As variáveis utilizadas neste trabalho foram extraídas de um estudo físico-químico e morfológico obtidos a partir de extrato de pequi. A análise de componentes foi realizada com base na matriz de correlação existente entre as componentes e as variáveis reais transformadas, de forma a identificar novas variáveis que explicam a maior parte da variabilidade, gerando-se novos valores para cada parcela experimental correspondente às componentes principais. Para cada temperatura utilizada no trabalho foram ajustadas apenas duas componentes capazes de explicar mais de 90% da variância dos dados originais. A análise de componentes principais foi eficiente neste estudo, gerando componentes interpretáveis reduzindo a dimensionalidade do problema se a perda de informações.