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Effect of heat treatment on internal atmosphere and leaf extension of minimally processed leek stalks
Author(s) -
Tsouvaltzis Pavlos,
Siomos Anastasios S.,
Gerasopoulos Dimitrios
Publication year - 2013
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12192
Subject(s) - stalk , volume (thermodynamics) , atmosphere (unit) , chemistry , horticulture , composition (language) , base (topology) , botany , materials science , biology , mathematics , meteorology , thermodynamics , linguistics , philosophy , physics , mathematical analysis
Summary Leeks trimmed at 20 cm from their base were immersed in a 55 °C hot water bath. During the heat treatment ( HT ), the internal gases released from each stalk were collected, and their volume as well as CO 2 and O 2 concentrations were determined. After HT , cooling and storage at 10 °C for 8 days, the weight, maximum leaf extension and internal atmosphere (volume and gas composition) were measured. It was found that HT inhibited leaf extension during storage at 10 °C for 8 days and induced significant modification of the stalk internal atmosphere, both immediately after HT and after storage. Therefore, in heat‐treated leek stalks, the growth zone of the innermost leaves was subjected to an environment of elevated CO 2 concentration, which was accompanied by the inhibition of leaf extension growth.