This study aimed to quantify the levels of resveratrol, coumarin, and other bioactives in pulps and by-products of twelve tropical fruits from Brazil obtained during pulp production process. Pineapple, acerola, monbin, cashew apple, guava, soursop, papaya, mango, passion fruit, surinam cherry, sapodilla, and tamarind pulps were evaluated as well as their by-products (peel, pulp's leftovers, and seed). Total phenolic, anthocyanins, yellow flavonoids, β-carotene and lycopene levels were also determined. Resveratrol was identified in guava and surinam cherry by-products and coumarin in passion fruit, guava and surinam cherry by-products and mango pulp. These fruit pulp and by-products could be considered a new natural source of both compounds. Overall, fruit by-products presented higher (P<0.05) bioactive content than their respective fruit pulps. This study provides novel information about tropical fruits and their by-products bioactive composition, which is essential for the understanding of their nutraceutical potential and future application in the food industry.

Considering the lack of research studies about nutrients' bioaccessibility in cashew apple, in this study the whole cashew apple juice and the cashew apple fibre were submitted to simulated in vitro gastrointestinal digestion. The samples were analysed before and after digestion and had their copper, iron, zinc, ascorbic acid, total extractable phenols and total antioxidant activity assessed. As a result, for the whole cashew apple juice, the content of copper and iron minerals bioaccessible fraction were 15% and 11.5% and for zinc this level was 3.7%. Regarding the cashew apple fibre, the bioaccessible fraction for these minerals was lower than 5%. The ascorbic acid, total extractable polyphenols and total antioxidant activity bioaccessible fraction for whole cashew apple juice showed bioaccessibility percentages of 26.2%, 39% and 27%, respectively, while for the cashew apple fibre, low bioaccessibles levels were found. The bioacessible percentage of zinc, ascorbic acid and total extractable polyphenols were higher in cashew apple juice than cashew apple fibre.

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Resumo Uma boa alternativa que vem sendo desenvolvida e aplicada nos últimos anos é o aproveitamento de resíduos oriundos do processamento de frutas e hortaliças. Grande parte do que é descartado dessas matérias-primas, tais como cascas, sementes e talos, pode ser reaproveitada na produção de novos alimentos. Este trabalho teve como objetivo desenvolver e avaliar a aceitação de biscoito tipo cookie elaborado a partir da farinha do caroço de abacate. Três formulações foram utilizadas no desenvolvimento do cookie: F1 (formulação do biscoito com acréscimo de 5% da farinha do caroço de abacate); F2 (formulação do biscoito com acréscimo de 10% da farinha do caroço de abacate) e F3 (formulação do biscoito com acréscimo de 20% da farinha do caroço de abacate). Em seguida, os biscoitos foram avaliados sob o ponto de vista físico-químico (umidade, cinzas, lipídeos, proteínas, carboidratos e valor calórico) e sensorial (aceitabilidade dos atributos aparência, cor, textura e sabor, além da intenção de compra). Entre as formulações testadas, a F1 (formulação do biscoito com acréscimo de 5% da farinha do caroço de abacate) foi mais bem aceita pelos provadores, visto que apresentou as maiores notas nos atributos sensoriais avaliados e uma intenção de compra acima da média (70%). Dessa forma, este estudo demonstrou a importância do aproveitamento integral de resíduos provenientes do processamento de produtos de origem vegetal no desenvolvimento de um novo produto, que apresenta potencial para a comercialização e um maior valor nutricional.

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