Potencial de resíduos agroindustriais como fontes de compostos bioativos

• Autor(a) principal: Silva, Ana Carolina da [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/127608
• topic: Tecnologia de alimentos; Resíduos industriais; Frutas - Sementes; Óleos vegetais; Compostos bioativos

Brazil is rich in native and/or exotic tropical fruit species with high agro-industrial potential. A large amount of fruit residues is generated daily by industry and, in most cases, such residues have their use limited to animal feed industry or end up being disposed of in the environment, consequently causing serious environmental damages. However, these residues have high potential because, besides containing carbohydrates, vitamins, and minerals, they are rich in indigestible fraction and other compounds of functional properties. This study aimed at analyzing the oils extracted from agro-industrial waste in order to identify bioactive compounds and antioxidant capacity of associated compounds. Pumpkim (Cucurbita moschata), citron (Citrus medica L.), guava (Psidium guajava L.), soursop (Anona muricata L.), kinkan (Fortunella margarita Swingle), orange (Citrus sinensis L. osbeck), apple (Mallus domestica Borkh), papaya (Carica papaya L.), mango (Mangifera indica L.), mangaba (Hancornia speciosa var. pubescens), passion fruit (Passiflora adulis Sims), melon (Cucumis melo var. inodorus Naudin), strawberry (Fragaria x ananassa Duchesne), tomato (Solanum Lycopersicum), and grape (Vitis labrusca L.) seeds were separated, washed, dried in an oven, at 40°C, and crushed. The oil was obtained by the Bligh & Dyer method. Determinations of fatty acid composition, theoretical composition of triacylglycerols, tocopherols, phytosterols, and phenolic compounds, total carotenoids, unsaponifiable matter, and oxidative stability were performed in the seed oils, besides antioxidant activity essays, by the methods of DPPH•, ABTS•+, FRAP, and β-carotene/linoleic acid system. The results were submitted to analysis of variance and Tukey test for 5% probability, expressed as mean of three measurements ± standard deviation. Orange, pumpkin, and kinkan seeds showed the highest percentage of lipids, 40.4, 33.5, and 33 ...