Multivariate analysis of fresh-cut carambola slices stored under different temperatures

Teixiera, Gustavo H.A., Durigan, José F., Ferraudo, Antônio S., Alves, Ricardo E. and O'Hare, Timothy J. (2012) Multivariate analysis of fresh-cut carambola slices stored under different temperatures. Postharvest Biology And Technology, 63 1: 91-97. doi:10.1016/j.postharvbio.2011.09.005

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Author Teixiera, Gustavo H.A.
Durigan, José F.
Ferraudo, Antônio S.
Alves, Ricardo E.
O'Hare, Timothy J.
Title Multivariate analysis of fresh-cut carambola slices stored under different temperatures
Journal name Postharvest Biology And Technology   Check publisher's open access policy
ISSN 0925-5214
Publication date 2012-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.postharvbio.2011.09.005
Volume 63
Issue 1
Start page 91
End page 97
Total pages 7
Place of publication Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
Quality of previous termfreshnext term-previous termcutnext termprevious termcarambolanext term (Averrhoa previous termcarambolanext term L.) is related to many chemical and biochemical variables especially those involved with softening and browning, both influenced by storage temperature. To study these effects, a previous termmultivariatenext termprevious termanalysisnext term was used to evaluate previous termslicesnext term packaged in vacuum-sealed polyolefin bags, and stored at 2.5 °C, 5 °C and 10 °C, for up to 16 d. The quality of previous termslicesnext term at each temperature was correlated with the duration of storage, O2 and CO2 concentration in the package, physical chemical constituents, and activity of enzymes involved in softening (PG) and browning (PPO) metabolism. Three quality groups were identified by hierarchical cluster previous termanalysisnext term, and the classification of the components within each of these groups was obtained from a principal component previous termanalysisnext term (PCA). The characterization of samples by PCA clearly distinguished acceptable and non-acceptable previous termslicesnext term. According to PCA, acceptable previous termslicesnext term presented higher ascorbic acid content, greater hue angles (°h) and final lightness (L-5) in the first principal component (PC1). On the other hand, non-acceptable previous termslicesnext term presented higher total pectin content, PPO activity in the PC1. Non-acceptable previous termslicesnext term also presented higher soluble pectin content, increased pectin solubilisation and higher CO2 concentration in the second principal component (PC2) whereas acceptable previous termslicesnext term showed lower total sugar content. The hierarchical cluster and PCA previous termanalysesnext term were useful for discriminating the quality of previous termslicesnext term stored at different temperatures.
Keyword Averrhoa previous termcarambolanext term L.
Hierarchical cluster previous termanalysisnext term
Principal component previous termanalysisnext term
Polyphenol oxidase; Polygalacturonase
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Queensland Alliance for Agriculture and Food Innovation
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 11 Oct 2011, 14:04:26 EST by Dr Timothy O'hare on behalf of Qld Alliance for Agriculture and Food Innovation