A multiple impact approach for non-destructive measurement of fruit firmness and maturity

N. Ozer, B. A. Engel, J. E. Simon

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Measurement of fruit firmness using impact response is greatly influenced by the angle and location of the impact on the fruit surface. To overcome this variability, a method to measure fruit firmness non-destructively using a multiple impact approach was developed. Incorporating impact response information for cantaloupes in various melon surface locations resulted in a correlation of r = 0.86 compared to a destructive flesh firmness test using a penetrometer and r = 0.94 with elastic modulus evaluated from a parallel plate loading test. This non-destructive method for estimating cantaloupe firmness proved to be useful for the classification of cantaloupes into five ripeness stages at a significance level of α = 0.05. Rigorous examination of fruit sensitivity to multiple impacts showed negligible effects with regard to physical damage.

Original languageEnglish (US)
Pages (from-to)871-876
Number of pages6
JournalTransactions of the American Society of Agricultural Engineers
Volume41
Issue number3
StatePublished - May 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences (miscellaneous)

Keywords

  • Automation
  • Color analysis
  • Elastic modulus
  • Fruit grading
  • Fruit quality
  • Human grading
  • Melons

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