Caracterização, compostos bioativos e potencial antioxidante de subprodutos do processamento de frutas no submédio do Vale do São Francisco

• Autor(a) principal: Amariz, Andréia
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU)
• Texto Completo: https://repositorio.ufersa.edu.br/handle/prefix/7033
• topic: Agregação de Valor; Potencial Funcional; Agroindústria; Caracterização Química; Adding Value; Functional Potential; Agrobusiness; Chemical Characterization; CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA

The processing fruit has high growth in recent years, making the disposal of waste in the environment represent an increasing problem. Research to assess the quality and potential utilization of by-products generated are noteworthy, since they can contribute to add value to them. The aim of this study was to characterize the quality, the content of bioactive compounds and the antioxidant potential of the fruit processing by-products for the production of pulps in agribusinesses located in Petrolina and Juazeiro-BA. They were collected by-products generated by three companies producing fruit pulps. They collected the raw material and by-products: Pineapples 'Pearl' and 'Smooth Cayenne'; acerola, represented by a mixture of varieties; carambola; guava 'Paluma'; mangoes '„Tommy Atkins‟', '„Keitt‟' and '„Palmer‟'; and passion fruit. Also were evaluated by-products arising from the refinement of pre-processed pulps were: plum, cocoa, yellow monbim, cashew, cupuassu, soursop, jenipapo, papaya, passion fruit, strawberry, tamarind, and umbu. For soursop and tamarind, the by-products generated corresponded to pulp and seeds as for passion was represented by seeds. The other corresponded to the pulp, except for umbu whose by-product contained peel and pulp. The variables were: proportion peel, seed and pulp; water activity; soluble solids, total soluble sugars and reducing sugars; titratable acidity; pH; starch; content of pectic; levels of ascorbic acid, carotenoids and total extractable polyphenols; and antioxidant activity by ABTS method. The results were expressed as mean and standard deviation. High soluble solids and soluble sugars were concentrated in the by-products represented by shells of the sleeves and plum refinement, cocoa and soursop. The by-products corresponding to the seeds of acerola fruits and bark of the mangos and passion fruit, as well as those of soursop and plum, are sources of pectin. Almonds of all mangoes, followed by seeds of tamarind and soursop, showed high levels of starch. The by-products represented by acerola seed processed in companies and to the byproduct of cashew showed high levels of ascorbic acid. The shells of all the sleeves, the seeds of guava and acerola, belonging to the Company 2 as well as the refining and papaya cajá corresponded by-products with the highest levels of total carotenoids, over 20 μg.g-1. Byproducts corresponding to carambola, the skins and seeds of mangoes to acerolas seeds, and return fines of tamarind and his seed, strawberry, hog plum and cashew, showed the highest polyphenol content: above 500 mg EAG.100g-1. Almonds of all varieties of mangoes, the bark of the mangos '„Palmer‟' Enterprise 1 and 3, and '„Keitt‟' Company 3, as well as refining and tamarind seed, showed high antioxidant activity by ABTS method: above 600 uM Trolox e.g. pulp-1. It was concluded that the evaluated by-products have potential for use in some industrial activities, such as the use as a food additive and bioprocesses