Qualidade de carambolas azedas cv. 'Golden Star' tratadas com CaCl2 por imersão e armazenadas sob refrigeração
Carregando...
Data
2004-04-01
Autores
Neves, Leandro Camargo
Bender, Renar João
Rombaldi, César Valmor
Vieites, Rogério Lopes [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
No presente trabalho, avaliou-se o efeito de diferentes concentrações de CaCl2 aplicadas na pós-colheita de carambolas cv. 'Golden Star, durante o armazenamento refrigerado (AR). Os frutos colhidos fisiologicamente maturos foram selecionados pela ausência de defeitos e imersos em soluções de CaCl2, em diferentes concentrações, em temperatura ambiente (22 °C) por 20 minutos. Após aplicação dos tratamentos T1 - controle (0% de CaCl2); T2 - CaCl2 a 1%; T3 - CaCl2 a 2%; T4 - CaCl2 a 3%, e T5 - CaCl2 a 4%, os frutos foram colocados em câmara frigorífica, por 35 dias, a 12 ± 0,5ºC e 95 ± 3%, e mais 3 dias a 22 ± 3°C e 72 ± 5% de umidade relativa (UR). 24 horas após a colheita e a cada sete dias, amostras foram retiradas da AR, mantidas por 12 horas em condições ambiente (22 ± 3°C e 72 ± 5% UR) e analisadas quanto ao teor de cálcio na polpa, perda de massa fresca, coloração da epiderme, firmeza de polpa (FP), sólidos solúveis totais (SST), acidez total titulável (ATT) e a ocorrência de distúrbios fisiológicos. Ao final do experimento, foi feita uma análise sensorial. Observou-se que os frutos imersos em solução de CaCl2 a 2% apresentaram menor perda de massa fresca e maior firmeza de polpa. As carambolas deste tratamento também não apresentaram manchas e podridões e foram preferidas pelos julgadores no teste de preferência. Os sólidos solúveis totais, a acidez total titulável e a coloração não apresentaram diferença estatística entre os tratamentos. Na análise de teores de cálcio adsorvido pelos frutos, determinou-se que quanto, maior a concentração da solução de CaCl2 aplicada, maior a concentração de cálcio presente na polpa.
In the present work were evaluated the effects of different CaCl2 concentrations applied after harvest on starfruit cv. Golden Star, during refrigerated storage (RS). The fruits were harvested at physiological maturity stage, selected free of defects and immersed for 20 minutes at room temperature in CaCl2 solutions at different concentrations. After the aplcation of the treatments T1 - 0% CaCl2 (control); T2 - 1% CaCl2; T3 - 2% CaCl2; T4 - 3% CaCl2 and T5 - 4% CaCl2, fruits were stored for 35 days in refrigerated room at 12 ± 0,5ºC and 95 ± 3% relative humidity (RH) and then retrieved to air at 22 ± 3°C and 72 ± 5% RH for 3 days. 24 hs after harvest and every seven days, samples were retrieved from storage, kept for 12 hours in ambient air (22 ± 3°C and 72 ± 5% RH) and analyzed for calcium content, fresh weight loss, epidermal color, flesh firmness (FF), total soluble solids (TS), total titratable acidity (TTA) and physiological disorders. At the end of the experiment a trained taste panel evaluated the fruits. Starfruit treated with 2% CaCl2 showed less dehydration and higher firmness compared to fruit from other treatments. These fruit had no decay incidence and were best accepted by the taste panelist. TS and TA as well as epidermal color did not differ among treatments. With regards to calcium contents, the higher the treatment concentration the higher amounts determined in the starfruit flesh.
In the present work were evaluated the effects of different CaCl2 concentrations applied after harvest on starfruit cv. Golden Star, during refrigerated storage (RS). The fruits were harvested at physiological maturity stage, selected free of defects and immersed for 20 minutes at room temperature in CaCl2 solutions at different concentrations. After the aplcation of the treatments T1 - 0% CaCl2 (control); T2 - 1% CaCl2; T3 - 2% CaCl2; T4 - 3% CaCl2 and T5 - 4% CaCl2, fruits were stored for 35 days in refrigerated room at 12 ± 0,5ºC and 95 ± 3% relative humidity (RH) and then retrieved to air at 22 ± 3°C and 72 ± 5% RH for 3 days. 24 hs after harvest and every seven days, samples were retrieved from storage, kept for 12 hours in ambient air (22 ± 3°C and 72 ± 5% RH) and analyzed for calcium content, fresh weight loss, epidermal color, flesh firmness (FF), total soluble solids (TS), total titratable acidity (TTA) and physiological disorders. At the end of the experiment a trained taste panel evaluated the fruits. Starfruit treated with 2% CaCl2 showed less dehydration and higher firmness compared to fruit from other treatments. These fruit had no decay incidence and were best accepted by the taste panelist. TS and TA as well as epidermal color did not differ among treatments. With regards to calcium contents, the higher the treatment concentration the higher amounts determined in the starfruit flesh.
Descrição
Palavras-chave
Pós-colheita, armazenamento, Averrhoa carambola L., firmeza, Postharvest, storage, Averrhoa carambola L, firmeness
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 26, n. 1, p. 32-35, 2004.