The production of dried peach by osmotic dehydration is an alternative for using the excess of peach production. The influence of the temperature and concentration of the sucrose syrup in osmotic dehydration of peaches was evaluated. Variations in physical and chemical properties, and osmotic dehydration parameters (weight loss and water loss; solids incorporation) were investigated. An experimental central composite design was employed ranging the temperature (30 to 50 oC) and concentration (45 to 65 °Brix), keeping the syrup:fruit mass ratio 4:1, process time 4 h, and format pieces (halves). The degree of acceptance was used in the sensory analysis, evaluating the following characteristics: appearance, taste, texture, colour and overall quality. The results were modelled using the Statistica program (v. 6.0) employing the Response Surface Methodology. The following mathematical models resulted significant (p < 0.05) and predictive: dimensionless soluble solids content and colour parameter L*, water loss and weight loss parameters. The temperature was the prevalent effect. The process conditions from 50 to 54.1 °C and from 55 to 65 °Brix presented more water loss and better sensory performances.152161169Araújo, E.A., (2005) Estudo do processo de desidratação osmótica e secagem denectarina (Prunus persica), p. 113. , Campinas: UNICAMP, Tese DoutoradoArgandoña, E.J.S., (2005) Goiabas desidratadas osmoticamente e secas: Avaliação de um sistema osmótico semicontínuo, da secagem e da qualidade, p. 172. , Campinas: UNICAMP, Tese DoutoradoAzuara, E., Garcia, H.S., Beristain, C.I., Effect of the centrifugal force on osmotic dehydration of potatoes and apples (1996) Food Research International, 29, pp. 195-199Azoubel, P.M., Oliveira, S.B., Araujo, A.J.B., Silva, I.R.A., Park, K.J., Influence of osmotic pretreatment on the total carotenoids content of dried mango (2008) International Conference of Agricultural Engineering, Brazilian Congress of Agricultural Engineering, 37. , In, Foz do Iguaçú. Anais...Foz do Iguaçu: SBEA/CIGR/ASABE, CD RomBarros Neto, B., Scarmino, I.S., Bruns, R.E., (1995) Planejamento e otimização de experimentos, p. 299. , 2a. ed. Campinas: UNICAMPBuchweitz, P.R., (2005) Avaliação da pré-secagem osmótica de kiwi (Actinidia deliciosa) complementada por processos convencionais, p. 224. , Campinas: UNICAMP, Tese DoutoradoCarvalho, C.R.L., Mantovani, D.M.B., Carvalho, P.R.N., Moraes, R.M., (1990) Análises Químicas de Alimentos - Manual Técnico, p. 121. , Campinas: ITALChiralt, A., Fito, P., Transport mechanisms in osmotic dehydration: The role of structure (2003) Food Science and Technology International, 9, pp. 179-186Chitarra, M.I.F., Carvalho, V.D., Qualidade e industrialização de frutos temperados: Pêssegos, ameixas, figos (1985) Informe Agropecuário, 11, pp. 56-65Cunha, L.M., Oliveira, F.A.R., Aboim, A.P., Frías, J.M., Pinheiro-Torres, A., Stochastic approach to the modelling of water losses during osmotic dehydration and improved parameter estimation (2001) International Journal of Food Science and Technology, 36, pp. 253-262Dionello, R.G., Berbert, P.A., Molina, M.A.B., Pereira, R.C., Viana, A.P., Carlesso, V.O., Desidratação osmótica de frutos de duas cultivares de abacaxi em xarope de açúcar invertido (2009) Revista Brasileira de Engenharia Agrícola e Ambiental, 13, pp. 596-605Fernandes, F., Rodrigues, S., Gaspareto, O.C.P., Oliveira, E.L., Optimization of osmotic dehydration of papaya followed by air-drying (2006) Food Research International, 39, pp. 492-498Germer, S.P.M., de Queiroz, M.R., Aguirre, J.M., Barbosa, W., Berbari, S.A., Sigrist, J.M.M., Quast, E., Aptidão de cultivares de pêssego do Estado de São Paulo para a produção de passas por processo combinado de secagem osmótica e secagem com ar quente (2007) Brazilian Journal of Food Technology, 10, pp. 151-158Germer, S.P.M., de Queiroz, M.R., Aguirre, J.M., Berbari, S.A., The influence of process variables on the osmotic drying and on sensory tests of sliced dehydrated peaches (2008) International Conference of Agricultural Engineering, Brazilian Congress of Agricultural Engineering, 37. , In, Foz do Iguaçú. Anais...Foz do Iguaçu: SBEA/CIGR/ASABE. 2008. CD RomHeng, K., Guilbert, S., Cuq, J.L., Osmotic dehydration of papaya: Influence of process variables on the product quality (1990) Science des Aliments, 10, pp. 831-848Kowalska, H., Lenart, A., Mass exchange during osmotic pretreatment of vegetables (2001) Journal of Food Engineering, 49 (2-3), pp. 137-140Lerici, C.R., Pinnavaia, G., Dalla Rosa, M., Bartolucci, L., Osmotic dehydration of fruit: Influence of osmotic agents on drying behavior and product quality (1985) Journal of Food Science, 50, pp. 1217-1226Martins, M.C.P., Cunha, T.L., Silva, M.R., Efeitos das condições da desidratação osmótica na qualidade de passas de caju-do-cerrado (2008) Ciência e Tecnologia de Alimentos, 28, pp. 158-165Mota, R.V., Avaliação da qualidade físico-química e aceitabilidade de passas de pêssego submetidas à desidratação osmótica (2005) Ciência e Tecnologia de Alimentos, 25 (1), pp. 789-794Park, K.J., Bin, A., Brod, F.P.R., Park, T.H.K.B., Osmotic dehydration kinetics of pear D'Anjou (Pyrus communis L.) (2002) Journal of Food Engineering, 52 (3), pp. 293-298Pereira, L.M., Ferrari, C.C., Mastrantoni, D.S., Rodrigues, A.C.C., Hubinger, M.D., Kinetic aspects, texture, and colour evaluation of some tropical fruits during osmotic dehydration (2006) Drying Technology, 24, pp. 475-484Ponting, J.D., Watters, G.G., Forrey, R.R., Jackson, R., Stanley, W.L., Osmotic Dehydration of Fruits (1966) Food Technology, 20, pp. 125-128(2008) Normas de Classificação de Pêssego e Nectarina, , PBMH & PIF - Programa Brasileiro para a modernização da horticultura & Produção integr ada, São Paulo: CEAGESPRaoult-Wack, A.L., Recent advances in the osmotic dehydration of foods (1994) Trends in Food Science & Technology, 5 (8), pp. 255-260Riva, M., Campolongo, S., Leva, A.A., Maestrelli, A., Totteggiani, D., Structure-property relationships in osmoair- dehydrated apricot cubes (2005) Food Research International, 38 (5), pp. 533-542Sahari, M.A., Souti, M., Emam-Jomeh, Z., Improving the dehydration of dried peach by osmotic method (2006) Journal of Food Technology, 4 (3), pp. 189-193(1989) SAS/STAT User's guide, 6, p. 1294. , SAS, Version 6. Cary: SAS InstituteSato, G.S., Produção de pêssegos de mesa e para indústria no Brasil (2001) Informações Econômicas, 31 (6), pp. 61-63Saurel, R., Raoult-Wack, A.L., Rios, G., Guilbert, S., Mass transfer phenomena during osmotic dehydration of apple. I. Fresh plant tissue (1994) International Journal of Food Science and Technology, 29 (5), pp. 531-542Shi, X.Q., Fito, P., Chiralt, A., Influence of vacuum treatment on mass transfer during osmotic dehydration of fruits (1995) Food Research International, 28 (5), pp. 445-454Tan, M., Chua, K.J., Mujumdar, A.S., Chou, S.K., Effect of osmotic pre-treatment and infrared radiation on drying rate and color changes during drying of potato and pineapple (2001) Drying Technology, 19 (9), pp. 2193-2207