3. Results and discussion
3.1. Proximate composition of blackberry bagasse Table 1 presents the proximate composition of blackberrybagasse. It can be noted that the moisture of the bagasse deter-mined by the gravimetric method is quite lower than that of thefresh fruit, reported by Chim [22] for three varieties of blackberry(Guarani 87%, Tupy 88.3%, and Brazos 89.3%). The moisture thatremains in the bagasse after drying (5.24%) may contribute to thefurther extraction of some polar components in SFE, since water in small amounts can act as cosolvent. The contents of ash, lipids andproteins are higher for the dried material, as expected. Facco et al.[23] reported ash contents from 0.27 to 0.49% in fresh blackberries,which are near the values found in this work for fresh bagasse,but different from those found by Chim [22] for the mentionedvarieties. Also classified as small fruit, blackberry has similar char-acteristics to blueberry. Besides the basic nutrients, blackberry hasremarkable amounts of essential micronutrients as minerals, fibers,vitamins and various secondary metabolites of phenolic nature[23].These differences may be related to the processes that mod-ify the physical and chemical properties of the material, but alsoto environmental conditions of growth. The results show that theresidue from blackberry pulp processing is still a good source ofnutrients, which could be recovered and used on the manufacturingof novel food products.