Ávila, Julia Maria Machado de ; Toralles, Ricardo Peraça ; Cantillano, Rufino Fernando Flores ; Peralba, Maria do Carmo Ruaro and Pizzolato, Tânia Mara (2012) Influência do sistema de produção e do armazenamento refrigerado nas características físico-químicas e no desenvolvimento de compostos voláteis em morangos. [Influence of planting system and cold storage on the physical-chemistries characteristicsand volatile compounds development in strawberries.] Ciência Rural, 42 (12), pp. 2265-2271.
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Summary
Durante o armazenamento, pode ocorrer a perda de compostos voláteis responsáveis pelo aroma e o aumento de compostos indesejáveis, o que ocasiona a perda de qualidade do morango, reduzindo a vida de prateleira e levando à rejeição do produto pelos consumidores. Neste trabalho, foi avaliada a influência do sistema de produção (convencional e orgânico) e do período de armazenamento (0, 2, 5, 8 dias) nas características físicas e químicas (CFQ) e nos compostos voláteis (CV) de morango das cultivares 'Camarosa' e 'Camino Real', utilizando morangos de pomar comercial da região de Pelotas/RS. Os frutos foram colhidos em estádio de maturação comercial e com boa aparência. O planejamento experimental foi casualizado, em triplicata de 15 frutos. Os morangos foram armazenados a T de 1°C, com 90-95% umidade relativa (UR). Foram avaliadas a perda de massa, a coloração instrumental [L*, a*, b* e ângulo hue (H)] , a firmeza, os sólidos solúveis (SS), a acidez titulável (AT), a relação SS/AT, pH e os teores de CV. Os resultados foram submetidos à análise de variância e as diferenças significativas determinadas pelo teste de Tukey (P<0,05). Os resultados revelaram que pH, SS, relação SS/AT, podridões e perda de massa aumentaram durante o armazenamento. A firmeza se manteve irregular e a AT e H diminuíram significativamente. Os teores de CV aumentaram com exceção do acetato de metila (AM). O etanol (Et), o acetaldeído (AA) e o acetato de etila (AE) correlacionaram-se positivamente com o teor de podridões para a cultivar 'Camino Real' do cultivo orgânico. De modo geral o AM correlacionou-se inversamente com o teor de podridões, exceto para a cultivar 'Camino Real' do cultivo convencional. Os morangos de ambas as cultivares podem ser armazenados por cinco dias com qualidade, independente do sistema de produção.
Summary translation
During the storage a loss of volatile compounds responsible for the aroma and an increase of undesirable compounds can occur leading to a decrease in the strawberry quality, a reduction of the shelf life and product rejection by the consumers. In the present work the influence of the planting system (conventional and organic) and the storage period (0, 2, 5 and 8 days) upon physical and chemical characteristics (FCC) as well as on strawberry volatile compounds (VC) in the cultivars 'Camarosa' and 'Camino Real' were evaluated using strawberries from a commercial orchard from Pelotas/RS. The fruits were harvested in a stage of commercial maturation and sound appearance. The experimental planning was randomized, in triplicate of fifteen fruits. The strawberries were stored at 1°C and 90-95% of relative humidity (RH). The mass loss, the instrumental color [L*, a*, b* and hue angle (H)], the firmness, the soluble solids (SS), the titratable acidity (TA), the SS/TA ratio, the pH and VC content were determined. The results were analyzed by analysis of variance and significant differences were determined using Tukey's test (P<0.05). The results show that pH, SS, relation SS/TA, decay and mass loss have increased during storage. The firmness varied irregularly and TA and H decreased significantly. The values of VC increased with the exception of methyl acetate (MA). Ethanol (Et), acetaldehyde (AA) and ethyl acetate (EA) correlated positively with decay for organic cultivated 'Camino Real'. In a general way, the MA correlated inversely with decay with the exception of conventional cultivated 'Camino Real'. Strawberries from both cultures can be stored for five days without loosing quality regardless the production system.
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Production organic, Production conventional, Postharvest, Fruit quality. Produção orgânica, Produção convencional, Pós-colheita, Qualidade da fruta. |
| Agrovoc keywords: | Language Value URI English Organic agriculture http://aims.fao.org/aos/agrovoc/c_15911 English postharvest technology http://aims.fao.org/aos/agrovoc/c_6133 English storage http://aims.fao.org/aos/agrovoc/c_7427 English Fruits http://aims.fao.org/aos/agrovoc/c_3131 English organic volatile compounds http://aims.fao.org/aos/agrovoc/c_330733 |
| Subjects: | Crop husbandry > Production systems Farming Systems > Farm economics Farming Systems Food systems > Food security, food quality and human health Crop husbandry Food systems Crop husbandry > Production systems > Fruit and berries |
| Research affiliation: | Brazil > Embrapa - Brazilian Agricultural Research Corporation Brazil > Other organizations |
| ISSN: | 0103-8478 |
| DOI: | 10.1590/S0103-84782012005000115 |
| Related Links: | http://www.scielo.br/?lng=pt |
| Deposited By: | Baldasso, Heloísa Souza |
| ID Code: | 29045 |
| Deposited On: | 03 Sep 2015 18:31 |
| Last Modified: | 03 Sep 2015 18:31 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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