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Calcium Uptake during Immersion of Strawberries in CaCl 2 Solutions
Author(s) -
Verdini R.A.,
Zorrilla S.E.,
Rubiolo A.C.
Publication year - 2008
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1750-3841.2008.00868.x
Subject(s) - calcium , pectin , immersion (mathematics) , chemistry , food science , organic chemistry , mathematics , pure mathematics
The present study studied calcium uptake in strawberries during immersion in CaCl 2 solutions by analyzing total calcium and cell‐wall calcium contents and the relationships between cell‐wall calcium content, pectin content, and the degree of pectin esterification, considering different temperatures and concentrations of the immersion solution. In addition, calcium uptake at different zones of the strawberries was studied. Calcium uptake increased significantly when the concentration of the immersion solution increased from 1% to 10% (v/v), and calcium uptake was higher at 38 °C at some immersion times, but there were no significant differences between 1 and 24 °C. Most of the calcium incorporated by the strawberries was retained in the alcohol insoluble solids and it may be related to calcium bounded to the cell wall. Calcium content did not change during immersion in CaCl 2 solution in the internal or in the central zones; however, it increased significantly in the external zone.