Relationship between Electrical Parameters and Quality Indexes of Apple Fruit During Storage

Abstract

Abstract: In order to investigate the correlation between the potential of dielectric properties and fruit internal quality, Fuji and Qin Guan apple treated with 1-methylcyclopropene (1-MCP) or ethephon were selected. An intelligent LCR Hioki tester was used to determine changes in 10 electrical parameters of the fruits with electric frequencies of 0.1～3980.0 KHz during apple fruit storage period. Quality indexes of firmness, titratable acid content, and peel chromaticity were also measured. Results showed that fruits presented a downswing of Z value as the electric frequency increased and the storage time extended. The Z value of Fuji apple could be significantly associated with titration acid content. Regression equations were built by correlation between electrical parameters of Rs, Z, and quality indexes of titration acid content and firmness; moreover, ε′ and Z could predict the change of peel chromaticity, and thus can measure for nondestructive-testing apples.

CLC Number:

S183

References

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