Amarelal
ActiveCastanea sativa Mill. · Sweet chestnut
Cultivation
Freezing suitability of the sweet chestnut
Castanea sativa Mill.
The concept encompasses the technological suitability of the fruit for low-temperature storage and the plant's biological frost resistance. Fruits require pre-treatment due to high moisture content, and plant tissues are capable of undergoing cryopreservation using specific protocols.
In the reference 11 varieties crop Sweet chestnut, where this is mentioned in the description.
When freezing sweet chestnut (Castanea sativa) fruits, the key factor is their high moisture content, which reaches 60%. To prevent fruit damage from internal vapor pressure during subsequent heating, it is necessary to make cross-shaped incisions in the shell. Preliminary heat treatment, such as blanching for 3–5 minutes, helps to inactivate enzymes and facilitates peeling; however, after thawing, it is recommended to use the fruits in culinary preparations due to potential textural changes in the starchy flesh.
In an agronomic context, freezing encompasses the cryopreservation of genetic material, in which zygotic embryos and apical meristems are subjected to single-step freezing in liquid nitrogen following dehydration and treatment with vitrification solutions. Under cultivation conditions, mature trees demonstrate moderate frost hardiness, withstanding temperatures down to -25°C...-29°C, whereas young saplings remain highly sensitive to early autumn and late spring frosts.
General information about the subject — on the page Suitability for freezing.
Varieties of Sweet chestnut mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.