Assessment of lettuce quality during storage at low relative humidity using Global Stability Index methodology

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dc.creatorMaría Roberta ANSORENA
dc.creatorMaría Victoria AGÜERO
dc.creatorMaría Grabriela GOÑI
dc.creatorSara ROURA
dc.creatorAlejandra PONCE
dc.creatorMaría del Rosario MOREIRA
dc.creatorKarina DI SCALA
dc.date2012
dc.date.accessioned2026-07-07T04:21:05Z
dc.descriptionDuring postharvest, lettuce is usually exposed to adverse conditions (e.g. low relative humidity) that reduce the vegetable quality. In order to evaluate its shelf life, a great number of quality attributes must be analyzed, which requires careful experimental design, and it is time consuming. In this study, the modified Global Stability Index method was applied to estimate the quality of butter lettuce at low relative humidity during storage discriminating three lettuce zones (internal, middle, and external). The results indicated that the most relevant attributes were: the external zone - relative water content, water content , ascorbic acid, and total mesophilic counts; middle zone - relative water content , water content, total chlorophyll , and ascorbic acid; internal zone - relative water content, bound water, water content, and total mesophilic counts. A mathematical model that takes into account the Global Stability Index and overall visual quality for each lettuce zone was proposed. Moreover, the Weibull distribution was applied to estimate the maximum vegetable storage time which was 5, 4, and 3 days for the internal, middle, and external zone, respectively. When analyzing the effect of storage time for each lettuce zone, all the indices evaluated in the external zone of lettuce presented significant differences (p < 0.05). For both, internal and middle zones, the attributes presented significant differences (p < 0.05), except for water content and total chlorophyll.
dc.formatapplication/pdf
dc.identifier0101-2061
dc.identifierhttps://www.redalyc.org/articulo.oa?id=395940335023
dc.identifier.urihttp://hdl.handle.net/123456789/458729
dc.languageen
dc.publisherSociedade Brasileira de Ciência e Tecnologia de Alimentos
dc.relationhttp://www.redalyc.org/revista.oa?id=3959
dc.rightsCiência e Tecnologia de Alimentos
dc.sourceCiência e Tecnologia de Alimentos (Brasil) Num.2 Vol.32
dc.subjectAgrociencias
dc.titleAssessment of lettuce quality during storage at low relative humidity using Global Stability Index methodology
dc.typeartículo científico

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Ciência e Tecnologia de Alimentos - Sociedade Brasileira de Ciência e Tecnologia de Alimentos