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- Title
Shelf‐life dating of shelf‐stable strawberry juice based on survival analysis of consumer acceptance information.
- Authors
Buvé, Carolien; Van Bedts, Tine; Haenen, Annelien; Kebede, Biniam; Braekers, Roel; Hendrickx, Marc; Van Loey, Ann; Grauwet, Tara
- Abstract
Abstract: BACKGROUND: Accurate shelf‐life dating of food products is crucial for consumers and industries. Therefore, in this study we applied a science‐based approach for shelf‐life assessment, including accelerated shelf‐life testing (ASLT), acceptability testing and the screening of analytical attributes for fast shelf‐life predictions. Shelf‐stable strawberry juice was selected as a case study. RESULTS: Ambient storage (20 °C) had no effect on the aroma‐based acceptance of strawberry juice. The colour‐based acceptability decreased during storage under ambient and accelerated (28‐42 °C) conditions. The application of survival analysis showed that the colour‐based shelf‐life was reached in the early stages of storage (≤11 weeks) and that the shelf‐life was shortened at higher temperatures. None of the selected attributes (a* and ΔE* value, anthocyanin and ascorbic acid content) is an ideal analytical marker for shelf‐life predictions in the investigated temperature range (20–42 °C). Nevertheless, an overall analytical cut‐off value over the whole temperature range can be selected. CONCLUSIONS: Colour changes of strawberry juice during storage are shelf‐life limiting. Combining ASLT with acceptability testing allowed to gain faster insight into the change in colour‐based acceptability and to perform shelf‐life predictions relying on scientific data. An analytical marker is a convenient tool for shelf‐life predictions in the context of ASLT. © 2017 Society of Chemical Industry
- Subjects
STRAWBERRY research; SHELF-life dating of food; SURVIVAL analysis (Biometry); ANALYTICAL chemistry equipment; TESTING
- Publication
Journal of the Science of Food & Agriculture, 2018, Vol 98, Issue 9, p3437
- ISSN
0022-5142
- Publication type
Article
- DOI
10.1002/jsfa.8856