Proximate composition of dehydrated bee pollen from Southern Brazil
Bee pollen gained prominence as differentiated food complement due to its nutritional properties, and also because of its high protein content. The Southern region of Brazil has a subtropical climate unlike the rest of the country and even different cultures and botanical origins that are not found in other states. The objectives of this work are to obtain data on the proximate composition of dehydrated bee pollen typically found in the Southern states (Paraná, Santa Catarina and Rio Grande do Sul) and compare that with the Brazilian regulation. Samples of fresh bee pollen (n=21) were sent fresh to the Laboratory of Food Analysis and after submitted to drying process at 42°C in an oven with closed air circulation for about 20 h to simulate process made by the Brazilian beekeepers. For the determination of proteins it was used Micro-Kjendahl method, determination of lipids in intermittent Soxhlet extractor, determination of ash gravimetrically after incineration of the sample in an oven at 550°C until constant weight, moisture determination by drying under infrared. The levels ranged from 1.0 to 5.23% for moisture, 14.02 to 30.75% for proteins, 0.25 to 7.58% for lipids and 1.26 to 3.30% for ashes. In this work eight of twenty-one samples of dried bee pollen showed some parameter outside the limits established by the Brazilian regulation, however the high percentage of proteins found in these analyzes confirms the findings of the literature which says that bee pollen is an excellent source of proteins for human consumption.