Amarante, Cassandro Vidal Talamini do creator Souza, Alexandra Goede de creator Steffens, Cristiano André creator Benincá, Thalita Dal Toé creator text periodical abstract or summary bl. continuing eng Abstract - This research was carried out to evaluate centesimal [dry matter (DM), ash, and crude contents of proteins (CP), fats (CFt) and fiber (CFb)] and mineral composition (Ca, Mg, N, P, K, Fe, Zn, Cu and Mn) of peel and flesh tissues of feijoa fruit (cultivars Alcântara, Mattos, Helena and Nonante, and accession 2316). The genotypes had, in the flesh, DM of 12.10-15.40%, ash of 0.33-0.40%, CP of 0.95-1.45%, CFt of 0.56-1.72%, and CFb of 1.39-2.43%, and in the peel DM of 12.8-17.27%, ash of 0.30-1.49%, CP of 0.56-0.88%, CFt of 0.57-0.90%, and CFb of 2.54-3.98%. The contents of Ca, Mg, K, N and P in the peel were 96-116, 20-30, 1588-3635, 1096-1643 and 68-83 mg kg-1 FW, respectively, and in the flesh were 56-92, 17-29, 1358-2917, 2017-3384 and 255-374 mg kg-1 FW, respectively. Among the micronutrients, Fe had the highest content in peel and flesh tissues (~3.5 mg kg-1 FW). The results show that feijoa fruit represent a dietary source of CP, CFt and CFb, as well as of minerals, especially of P and N in the flesh, and of K and Fe in the peel and flesh tissues. Index terms: Feijoa sellowiana, ash, fiber, fat, nutrient, protein. Resumo – O objetivo deste trabalho foi avaliar a composição centesimal [matéria seca (MS), matéria mineral (MM), proteína bruta (PB), gordura bruta (GB) e fibra bruta (FB)] e mineral (Ca, Mg, N, P, K, Fe, Zn, Cu e Mn) nos tecidos da casca e da polpa dos frutos de goiabeira-serrana (cultivares Alcântara, Mattos, Helena e Nonante, e acesso 2316). Os genótipos apresentaram, na polpa, MS de 12,10-15,40%, MM de 0,33-0,40%, PB de 0,95-1,45%, GB de 0,56-1,72% e FB de 1,39-2,43%, e na casca MS de 12,80-17,27%, MM de 0,30-1,49%, PB de 0,56-0,88%, GB de 0,57-0,97% e FB de 2,54-3,98%. Os teores de Ca, Mg, K, N e P, na casca, foram de 96-116, 20-30, 1.588-3.635, 1.096-1.643 e 68-83 mg kg-1 de matéria fresca (MF), respectivamente, e na polpa, de 56-92, 17-29, 1.358-2.917, 2.017-3.384 e 255-374 mg kg-1 MF, respectivamente. Dentre os micronutrientes, o Fe apresentou os maiores teores na casca e na polpa (~3,5 mg kg-1 MF). Os resultados mostram que a goiaba-serrana representa importante fonte de PB, GB e FB na dieta humana, bem como de minerais, em especial de N e P na polpa, e de K e Fe na casca e na polpa. Termos para indexação: Feijoa sellowiana, matéria mineral, fibra, gordura, nutriente, proteína Publicação online; 25 ref.; 2 tables; Summaries (En, Pt) GOIABA SERRANA GENÓTIPO CASCA POLPA COMPOSIÇÃO QUÍMICA FIBRA PROTEÍNA VALOR NUTRITIVO Jaboticabal-SP Sociedade Brasileira de Fruticultura 1978 2024-3605 0100-2945 BR2025005157 v. 41(6) p. 1-7; (2019) https://www.scielo.br/j/rbf/a/vKzznnN3mJp5PCjQqBfr59f/?format=pdf&lang=en https://www.scielo.br/j/rbf/a/vKzznnN3mJp5PCjQqBfr59f/?format=pdf&lang=en BR-BrBNA 251202 20251202154954.0 eng