The peels of avocados, like other fruit peels, are commonly discarded, not knowing their potential use. In order to reuse avocado peel, the chemical and mineral compositions, total phenolic and flavonoid contents as well as antioxidant activities have been investigated by DPPH (1,1-diphenyl-2- picrylhydrazyl) and FRAP(ferric-reducing antioxidant power) methods in in natura and dehydrated avocado peel. Dehydrated avocado-peel tea was manufactured and the antioxidant activity was evaluated, as well as their flavonoid and phenolic compound contents, and compared with other teas marketed. Avocado peel, especially dried avocado peel, contains major phenolic compounds (10,848.27 ± 162.34 mg GAE kg-1) and flavonoids (1,360.34 ± 188.65 mg EQ kg-1). The avocado-peel tea showed antioxidant activity by DPPH (1,954.24 ± 87.92 e 2518.27 ± 192.59 mg TE L-1) and phenolic and flavonoids contents highest than apple tea. The avocado-peel tea showed good antioxidant activity and had good acceptability by sensory analysis as a promising product. © 2016, Eduem - Editora da Universidade Estadual de Maringa. All rights reserved.3812329Abdille, M.H., Singh, R.P., Jayaprakasha, G.K., Jena, B.S., Antioxidant activity of the extracts from Dilleniaindica fruits (2005) Food Chemistry, 90 (4), pp. 891-896Abdullah, N., Zulkifli, K.S., Abdullah, A., Aziman, N., Kamarudin, W.S.S., Asesment on the antioxidant and antibacterial activities of selected fruit peels (2012) International Journal of Chemtech Research, 4 (1), pp. 1534-1542(1998) Official Methods of Analysis, , 16th ed.). Washington, DC: AOACAziz, N.A.A., Wong, L.M., Bhat, R., Cheng, L.H., Evaluation of processed Green and ripe mango peel and pulps flours (Mangiferaidnica var. Chokanan) in terms of chemical composition, antioxidant compounds and functional properties (2012) Journal of the Science of Food and Agriculture, 92 (3), pp. 557-563Barbosa, R.M.S., Croccia, C., Carvalho, C.G.N., Franco, V.C., Salles, C.R., Soares, E.A., Consumo alimentar de crianças com base 4 na pirâmide alimentar brasileira infantil (2005) Revista De Nutrição, 18 (3), pp. 633-641Barros, H.R.M., Ferreira, T.A.P.C., Genovese, M.I., Antioxidant capacity and mineral content of pulp and peel from commercial cultivars of citrus from Brazil (2012) Food Chemistry, 134 (4), pp. 1892-1898Benzie, I.F.F., Strain, J.J., The ferric reducing ability of plasma (FRAP) as a measure of “Antioxidant Power”: The FRAP assay (1996) Analytical Biochemistry, 239 (1), pp. 70-76Bligh, E.G., Dyer, W.J., A rapid method of total lipid extraction and purification (1959) Canadian Journal of Biochemistry and Physiology, 37 (8), pp. 911-917Brand-Williams, W., Cuvelier, M.E., Berset, C., Use of free radical method to evaluate antioxidant activity (1995) LWT- Food Science and Technology, 28 (1), pp. 25-30Ministério da Saúde, Agência Nacional de Vigilância Sanitária. Portaria n.º 519, de 26 de junho de 1998. Regulamento técnico para fixação de identidade e qualidade de chás-plantas destinadas à preparação de infusões ou decocções (1998) Diário Oficial Da República Federativa Do Brasil, Brasilia, , DF, BrasilMinistério da Saúde, Agência Nacional de Vigilância Sanitária. Resolução RDC n.º 12, 2 de janeiro de 2001. Aprova o Regulamento Técnico sobre padrões microbiológicos para alimentos (2001) Diário Oficial Da República Federativa Do Brasil, Brasilia, , DF, BrasilMinistério da Agricultura, Pecuária e Abastecimento. Instrução normativa n.º 17, 19 de junho de 2013. Preparado sólido para refresco e preparado sólido para bebida composta (2013) Diário Oficial Da República Federativa Do Brasil, , Brasilia, DF, BrasilBroiniz, P.R.B., Rade-Wartha, E.R.S., Silva, A.M.O., Novoa, A.J.V., Torres, R.P., Azeredo, H.M.C., Mancini-Filho, J., Avaliação da atividade antioxidante dos compostos fenólicos naturalmente presentes em subprodutos do pseudofruto de caju (Anacardiumoccidentale L.) (2007) Ciência E Tecnologia De Alimentos, 27 (4), pp. 902-908Cecchi, H.M., (1999) Fundamentos teóricos E práticos Em análise De Alimentos, , Campinas, SP: UnicampChantaro, P., Devahastin, S., Chiewchan, N., Production of antioxidant high dietary fiber powder from carrot peels (2008) LWT- Food Science and Technology, 41 (10), pp. 1987-1994Eberlin, M.N., Composição química e atividade biológica de extrato oleoso de própolis: Uma alternative ao extrato etanólico (2009) Química Nova, 32 (2), pp. 296-302Esmelindro, M.C., Toniazzo, G., Waczuk, A., Dariva, C., Oliveira, D., Caracterização físico-química da erva-mate: Influência das etapas do processamento industrial (2002) Ciência E Tecnologia De Alimentos, 22 (2), pp. 193-204Falade, K., Omojola, B.S., Effect of processing methods on physical, chemical, rheological, and sensory properties of Okra (Abelmoschusesculentus) (2010) Food and Bioprocess Technology, 3 (3), pp. 387-394(1985) Energy and Protein Requirements, , (WHO Technical Report Seriesn. 724). Geneva, Switzerland: World Health Organization(1995) Bacteriological Analytical Manual Association of Official Analytical, , Arlington, VA: InternationalGondim, J.A.M., Moura, M.F.V., Dantas, A.S., Composição centesimal e de minerais em cascas de frutas (2005) Ciência E Tecnologia De Alimentos, 25 (4), pp. 825-827Guo, C., Yang, J., Wei, J., Li, Y., Xu, J., Jiang, Y., Antioxidant activities of peel, pulp and seed fractions of common fruits as determined by FRAP assay (2003) Nutrition Research, 23 (12), pp. 1719-1726Harborne, J.B., Williams, C.A., Advances in flavonoid research since 1992 (2000) Phytochemistry, 52 (6), pp. 48-504Huang, D., Ou, B., Prior, R.L., The chemistry behind antioxidant capacity assays (2005) Journal of Agricultural and Food Chemistry, 53 (6), pp. 1841-1856Ishida, K., Schubert, D., Sagar, Y., Flavonoids protect neuronal cells from oxidative stress by three distinct mechanisms (2001) Free Radical Biology & Medicine, 30 (4), pp. 433-446Kodama, D.H., Gonçalves, A.E.S., Lajolo, F.M., Genovese, M.I., Flavonoids, total phenolics and antioxidant capacity: Comparison between commercial green tea preparations (2010) Ciência E Tecnologia De Alimentos, 30 (4), pp. 1077-1082Loizzo, M.R., Tundis, R., Bonesi, M., Menichini, F., Mastellone, V., Avallone, L., Menichini, F., Radical scavenging, antioxidant and metal chelating activities of Annonacherimola Mill. (cherimoya) peel and pulp in relation to their total phenolic and total flavonoid contents (2012) Journal of Food Composition and Analysis, 25 (2), pp. 179-184Lu, Q.Y., Artega, J.R., Zhang, Q., Huerta, S., Go, V.L.W., Heber, D., Inhibition of prostate cancer cell growth by an avocado extract: Role of lipid-soluble bioactive substances (2005) Journal of Nutritional Biochemistry, 16 (1), pp. 23-30Lucio, I.B., Freitas, R.J.S., Waszczynsky, N., Composição físico-química e aceitação sensorial da inflorescência de gengibre orgânico (Zingiber officinale Roscoe) (2010) Ciência E Tecnologia De Alimentos, 30 (3), pp. 652-656Marques, C.A., Importância econômica da família Lauraceae Lindl (2001) Floresta E Ambiente, 8 (3), pp. 196-206Ma, X., Wu, H., Liu, L., Yao, Q., Wang, S., Zhan, R., Polyphenolic compounds and antioxidant properties in mango fruits (2011) Scientia Horticulturae, 129 (1), pp. 102-107Meilgaard, M., Civille, G.V., Carr, B.T., (1991) Sensory Evaluation Techniques. (2A Ed.), , Boca Raton: CRC PressNishiyama, M.F., Costa, M.A.F., Costa, A.M., Souza, C.G., Boer, C.G., Bracht, C.K., Peralta, R.M., Chá verde brasileiro (Camelliasinensis varassamica): Efeitos do tempo de infusão, acondicionamento da erva e forma de preparo sobre a eficiência de extração dos bioativos e sobre a estabilidade da bebida (2010) Ciência E Tecnologia De Alimentos, 30 (1), pp. 191-196Oh, J., Jo, H., Cho, A.R., Kim, S.J., Han, J., Antioxidant and antimicrobial activities of various leafy herbal teas (2013) Food Control, 31 (2), pp. 403-409Oliveira, R.M.M., Quantificação de catequinas e cafeína do chá verde (Camellia sinensis) infusão, extrato e bebida pronta (2012) Ciência E Tecnologia De Alimentos, 32 (1), pp. 163-166Pennington, J.A.T., Fisher, R.A., Classification of fruits and vegetables (2009) Journal of Food Composition and Analysis, 22, pp. 23-31Peschel, W., Sánchez-Rabaneda, F., Diekmann, W., Plescher, A., Gartzía, I., Jiménez, D., Lamuela-Ravebtós, R., Codina, C., An industrial approach in the search of natural antioxidants from vegetable and fruit wastes (2006) Food Chemistry, 97 (1), pp. 137-150Queiroz, M.I., Treptow, R.O., (2006) Análise Sensorial Para a avaliação Da Qualidade Dos Alimentos, , Rio Grande, RS: FurgRibeiro, A.B., Bonafé, E.G., Silva, B.C., Montanher, P.F., Santos-Júnior, O.O., Boeing, J.S., Visentainer, J.V., Antioxidant capacity, total phenolic content, fatty acids and correlation by principal component analysis of exotic and native fruits from Brazil (2013) Journal of the Brazilian Chemical Society, 24 (5), pp. 797-804Rocha, A.S., Lima, G.P.P., Lopes, A.M., Borguini, M.G., Ciccone, V.R., Beluta, I., Fibras e lipídios em alimentos vegetais oriundos do cultivo orgânico e convencional (2008) Revista Simbio-Logias, 1 (2), pp. 1-9Rodríguez-Carpena, J.G., Morcuende, D., Estévez, M., Avocado, sunflower and olive oils as replacers of pork back-fat in burger patties: Effect on lipid composition, oxidative stability and quality traits (2012) Meat Science, 90 (1), pp. 106-115Scharamm, D.D., German, J.B., Potential effects of flavonoids on the etiology of vascular disease (1998) The Journal of Nutritional Biochemistry, 9 (10), pp. 560-566Shahidi, F., Naczk, M., (1995) Food Phenolics: Sources, Chemistry, Effects and Applications, , Lancaster, PA: Technomic Publishing Company IncShui, G., Leong, L.P., Residue from star fruit as valuable source for functional food ingredients and antioxidant nutraceuticals (2006) Food Chemistry, 97 (2), pp. 277-284Sinija, V.R., Mishra, H.N., Fuzzy analysis of sensory data for quality evaluation and ranking of instant green tea powder and granules (2011) Food and Bioprocess Technology, 4 (3), pp. 408-416Soares, S.E., Ácidos fenólicos como antioxidantes (2002) Revista De Nutrição, 15 (1), pp. 71-81Souza, R.A.M., Oldini, T.L.C., Cabral, I.S.R., Alencar, S.M., Compostos fenólicos totais e atividade antioxidante de chás comercializados no Brasil (2011) Boletim Do Centro De Pesquisa De Processamento De Alimentos, 29 (2), pp. 229-236(2004) Statistica 7.0, , [Software]. Tucksa: StatsoftWolfe, K., Wu, X., Liu, R.H., Antioxidant activity of apple peels (2003) Journal of Agriculture and Food Chemistry, 51 (3), pp. 609-614