Claim · model-written summary
Skin surface restraint had negligible effect on resonant frequency.
- Taxon
- Apples
Malus domesticat0 - Treatment
- surface restraint by the skine0
- Outcome
- resonant frequencye0
- Direction
- negligiblee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The effect of surface restraint by the skin on the resonant frequency was found to be negligible.”
t0“Apples”
Title
Changes in Sonic Resonance of Delicious and Golden Delicious Apples Undergoing Accelerated Ripening
Louis A. Liljedahl; Judith A. Abbott Transactions of the ASAE 1994. doi:10.13031/2013.28158
Other claims from this paper (5)
- Observation Apple resonant frequencies decreased monotonically during ripening.
- Method / resource Resonant frequency tracked ripening more consistently and with less scatter than Magness-Taylor firmness.
- Observation The frequency–ripening duration relationship differed slightly between Delicious and Golden Delicious cultivars.
- Intervention effect Heavy waxing changed the frequency–ripening relationship in Delicious apples.
- Method / resource Sonic measurement was nondestructive and representative of the whole fruit, with potential for online sorting.