Failure criteria based on consumers´rejection to determine the sensory shelf life of minimally processed lettuce

Dublin Core

Title

Failure criteria based on consumers´rejection to determine the sensory shelf life of minimally processed lettuce

Subject

ANALISIS SENSORIAL
LECHUGAS
VIDA UTIL
2008
BIBLIOGRAFIA NACIONAL QUIMICA

Abstract

The aims of the presentworkwere to determine failure criteria based on consumers’ rejection to purchase for shelf life estimation of minimally processed lettuce, and to compare criteria for whole and cut lettuce. A trained sensory panel and a consumer panel evaluated samples of whole and cut lettuce leaves packaged in passive modified atmosphere. In order to determine failure criteria to estimate sensory shelf lives, sensory attribute intensities corresponding to 25% consumers’ rejection to purchase percentage were calculated using logistic regressions. Failure criteria values were lower for cut lettuce than for whole leaves for all the evaluated attributes, suggesting that consumers reacted differently towards whole and cut lettuce leaves, being stricter towards cut lettuce than towards whole lettuce leaves. These results indicate that sensory limits depended on the product considered and therefore a unique criterion should not be used to estimate the shelf life of both cut lettuce and whole lettuce leaves. Twenty-five percent of the consumers would refuse to purchase cut lettuce if the intensity of the evaluated defectswas over 10% of the measuring scale, whereas scores of 25% of the scale were needed to achieve a 25% of consumer rejection in the case of whole leaves. These failure criteria were stricter than those traditionally used for sensory shelf life estimation of minimally processed lettuce, which might assure the products’ quality at the end of its shelf life. Results of the present study showed theimportance of performing consumer studies in order to establish proper criteria to estimate the shelf life of fresh vegetables

Creator

Lareo, Claudia
Lema, Patricia
Martinez, Inés

Source

Postharvest Biology and Technology v. 49, no. 2, 2008. -- p. 255-259

Publisher

Elsevier

Date

2008

Rights

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Format

PDF

Language

Inglés

Type

Artículo

Identifier

doi:10.1016/j.postharvbio.2008.02.006

Document Item Type Metadata

Original Format

PDF
Date Added
June 3, 2014
Collection
Bibliografía Nacional Química
Item Type
Document
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Citation
Ares, Gastón et al., “Failure criteria based on consumers´rejection to determine the sensory shelf life of minimally processed lettuce,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/1508.