Exploração de co-produtos do maracujá: elaboração de farinha instantânea mista de arroz/maracujá por extrusão termoplástica e seu uso em bebidas

Abstract

Passion fruit when processed to obtain the juice, the seeds and the pulp that separate the pith are removed, then getting the shell and the inside white (mesocarp), which is known to be rich in pectin (hemicellulose) Soluble fiber type (a bit more than 50% hemicellulose). Products found passion resulting from the processing of fruit juices in agribusiness, is on the market in passion fruit flour, which is rich in pectin, marketed as products rich in fiber. The peels of fruits consist primarily of carbohydrates, proteins and pectins, which allows the use thereof for the manufacture of sweets, can become a viable alternative to solve the waste disposal problem in addition to increasing their commercial value. The objective of this study was to use passion fruit peel and albedo for the development of a mixed flour precooked rice flour and passion fruit using extrusion technology and then use it as ingredients for producing a beverage, with and without gluten high fiber content. The experimental design was of the type central composite by three factors and verified the effect of these three temperature levels in the last extrusion zone (140, 160 and 180 ° C); Moisture flour (16, 17, 18%) and percentage of passion fruit flour/rice (5:95, 10:90 and 15: 85%). They were carried out physico-chemical analysis, microbilogicas, rheological and sensory in extruded flours and in the elaborate drinks. In general, the results obtained in this study show that passion fruit peel, by-product the juice and pulp industry, could be used as a source of fiber. Its incorporation in food formulation must address their physical, chemical and sensory, to ensure its best use and acceptance among consumers. The results showed that the composition of view flours have significant nutritional value, for both the protein content and to the profile of minerals. The results of microbiological analysis showed that all blends (F1, F6, F10 and F19) were within the microbiological standards recommended by the RDC 12 for this category of products and are fit for human consumption until 45 days of manufacture in temperature environment. Thus, these flours are processed by extruding into an excellent alternative to inclusion of functional ingredients in the diet, may even be used in the preparation of drinks, showing that there acceptability and preference using the same stabilizers pectin and carboxymethylcellulose.