Efeito do hidroresfriamento, da temperatura e da rehidratação na conservação pós-colheita de coentro

• Ano de defesa: 2012
• Autor(a) principal: Olliveira, Lucilene Silva de
• Orientador(a): Finger, Fernando Luiz
• Banca de defesa: Puiatti, Mário , Mapeli, Ana Maria
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Fisiologia Vegetal
• Departamento: Controle da maturação e senescência em órgãos perecíveis; Fisiologia molecular de plantas superiores
• País: BR
• Palavras-chave em Português: Pré-resfriamento; Hidratação; Coentro
• Palavras-chave em Inglês: Pre-cooling; Hydration; Coriander
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOS::FISIOLOGIA POS-COLHEITA
• Link de acesso: http://locus.ufv.br/handle/123456789/4331

The goals of this work were to evaluate the influence of the use of pre-cooling and hydration on the longevity of coriander (Coriandrum sativum L.) leaves. In evaluating the use of pre-cooling were made bundles of leaves coriander 20-25 g. Immediately after the shape, the bundles were submerged for 10 min in a mixture at 5 °C with crushed ice and water (1:3 v/v), followed by storage at 20 and 5°C. The hydrocooling caused premature yellowing of the coriander leaves 72 and 96 h after the treatment, respectively, for storage at 20 and 5°C. It was concluded that the most appropriate treatment for post-harvest conservation of coriander bundles is the storage at 5 °C after harvest without pre-cooling. For to evaluation the effect of hydration of coriander leaves were used bundles 25-30 g, three times of submerged in water at 25°C (3, 6 and 9 h) and three percentages of weight loss before to immersion of the bundles in water (0.5 to 10%). The hydration was assessed in both storage temperatures. At first, the bundles were stored at 5°C and relative humidity (RH) of 80% after hydration, and the weight loss of 5 and 10% occurred at 5°C. At the second, the weight loss of 5 and 10% occurred at 25°C and the bundles were stored at 25°C and 54% RH. It was found that use of the hydration did not resulted in increase the longevity of coriander bundles, when the leaves were subsequently stored at 25°C. The hydration occasioned the appearance of dark spots on the leaves, yellowing and decay of leaves and branches, during storage at 25°C. The use of refrigeration at 5°C after hydration impeded the yellowing and branches of coriander bundles over the shelf life. The hydration for 3 h after harvest of coriander bundles can be used to increase in day the longevity of the same, if followed by storage at 5°C.