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Food and Bioprocess Technology

, Volume 10, Issue 4, pp 662–673 | Cite as

Towards the Use of Biochemical Indicators in the Raw Fruit for Improved Texture of Pasteurized Apricots

  • Albert Ribas-Agustí
  • Barbara Gouble
  • Sylvie Bureau
  • Jean-François Maingonnat
  • Jean-Marc Audergon
  • Catherine M. G. C. Renard
Original Paper

Abstract

Quality of canned apricots is seriously compromised by the loss of their flesh firmness during pasteurization. This work conducted a comprehensive characterization of the biochemical properties of raw apricots, as well as of the tissue softening during pasteurization using a multimethodology approach. Biochemical and textural results were analyzed to seek possible correlations, with the aim to elucidate which properties could be used as indicators in raw fruit for obtaining pasteurized products with better texture. There were large effects of cultivar, ripening stage, and intra-fruit zone on the biochemical and textural properties of apricots. The titratable acidity, amongst ethylene production, soluble solid content, and pectinolytic enzyme activities, was the biochemical property that correlated more robustly to the loss of texture. It had significant correlation coefficients of −0.9 and 0.5 with firmness of pasteurized fruit and loss of firmness, respectively. We propose titratable acidity to be used as indicator for raw material selection and/or to be modulated during apricot food processing.

Keywords

Biochemical properties Canning Firmness Pectinolytic enzymes Thermal treatment Titratable acidity 

Abbreviations

α-Arab

α-Arabinosidase

β-Gal

β-Galactosidase

EE

External equatorial

EP

External pistil

G

Goldrich

H

Hargrand

I

Iranien

ME

Median equatorial

MP

Median pistil

M1

Commercial harvest

M2

Half-ripe

O

Orangered

PCA

Principal component analysis

PG

Polygalacturonase

PME

Pectinmethylesterase

SSC

Soluble solids content

TA

Titratable acidity

Notes

Acknowledgements

This work was financed by the Agence Nationale de la Recherche under the project ILLIAD (ANR-11-ALID-0006). The authors gratefully acknowledge UPPIA and the Prix de Recherche en Nutrition Institut Appert 2014 for economic support.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.UMR408 SQPOV Sécurité et Qualité des Produits d’Origine Végétale, INRAUniversity of AvignonAvignonFrance
  2. 2.Department of Food TechnologyUniversity of LleidaLleidaSpain
  3. 3.UR1052 GAFL Unité de Génétique et d’Amélioration des Fruits et LégumesINRAAvignonFrance

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