Abstract
Several studies about juçara palm fruit (Euterpe edulis) have emphasized its high antioxidant capacity. However, there is a lack of studies comparing the effects of conservation technologies on the physicochemical and sensory quality of juçara pulp. This work aimed at evaluating the effects of gamma radiation (60Co) and pasteurization process on the physicochemical and sensory quality of juçara pulp. The irradiated (2.5 ± 0.06 kGy) and pasteurized (80°C/5 minutes) pulps were stored at 6°C, 90% RH, for 30 days (3 periods of analysis) and were analyzed for their microbiological, physicochemical (titratable acidity, soluble solids content, color, phenolic compounds, anthocyanin content, polyphenol oxidase and peroxidase activity) and sensory parameters (acceptance test. The physicochemical results were submitted to ANOVA for the ‘F’ test and the statistical difference of averages (P < 0.05) was determined by the Tukey’s test. The results of the sensory analysis were submitted to Principal Component and Cluster Analysis. The gamma radiation did not show satisfactory results in the preservation of juçara pulp since there was a significant decrease in total phenolics and anthocyanin content. The pasteurized pulp maintained its physicochemical and sensory characteristics during storage. Therefore, we recommend the pasteurization as a good conservation technique to this kind of product, which presented a shelf-life of around 15 days
Publisher
Universidad Nacional de Colombia
Subject
Soil Science,Agronomy and Crop Science
Reference17 articles.
1. Alexandre, D., Cunha, R. L., and Hubinger, M. D. (2004). Preservation of the assai pulp through the application of obstacles. Food Sci. Techn. 24(1):114-119. http://dx.doi.org/10.1590/S0101-20612004000100021
2. AOAC International. (2005). Official methods of analysis. In. Gaithersburg: AOAC International. Arvanitoyannis, I. S., Stratakos, A. C., and Tsarouhas, P. (2009). Irradiation Applications in Vegetables and Fruits: A Review. Critical Rev.Food Sci. Nutr. 49(5):427-462. http://dx.doi.org/10.1080/10408390802067936
3. Bastos, C. T. R. M. L., T.M.S., Rogez, H., and Pena, R. S. (2008). Study of the efficiency of the pasteurization of pulp of taperebá (Spondias mombin). Braz. J. Food Nutr. 19(2):123-131.
4. Bicudo, M. O. P., Ribani, R. H., and Beta, T. (2014). Anthocyanins, phenolic acids and antioxidant properties of jucara fruits (Euterpe edulis M.) along the on-tree ripening process. Plant Foods Human Nutr. 69(2):142-147. http://dx.doi.org/10.1007/s11130-014-0406-0
5. Breitfellner, F., Solar, S., and Sontag, G. (2002). Effect of gamma-irradiation on phenolic acids in strawberries. J. Food Sci. 67(2):517-521. http://dx.doi.org/10.1111/j.1365-2621.2002.tb10629.x
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