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Nondestructive detection of kiwifruit treated with N ‐(2‐chloro‐4‐pyridyl)‐ N ′‐phenylurea by electrical method
Author(s) -
Wang Dan,
Li Lin,
Liang Jin,
Huang Tianzi,
Zhang Lu,
Li Rui,
Li Ruijuan,
Yang Shuxia,
Luo Anwei
Publication year - 2020
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/jfpp.14860
Subject(s) - titratable acid , flesh , chemistry , horticulture , materials science , food science , biology
The study aimed to establishing mathematical models which can be used to detect the kiwifruits treated with N ‐(2‐chloro‐4‐pyridyl)‐ N ′‐phenylurea (CPPU) by finding out the characteristic frequencies and sensitive electrical parameters. Related electrical parameters and quality and physiological indicators including soluble solids content (SSC), vitamin C (VC), titratable acidity (TA), flesh firmness, respiratory rate, and the activity of enzymes of “Qinmei” kiwifruit treated with 20 mg/L CPPU were measured during storage to analyze the correlation between them. Results showed that the characteristic frequencies of “Qinmei” treated with and without CPPU are 0.1 and 3,980 kHz, respectively, and that a sensitive electrical parameter common between groups is the parallel equivalent capacitance ( Cp ). Nondestructive detection of CPPU‐treated kiwifruit was realized by the obtained mathematical model based on the comparison of Cp . This study provides a feasible method for the nondestructive detection of kiwifruit treated with CPPU which could promote efficiency and cost saving. Practical applications This study provides a feasible method for the nondestructive detection of kiwifruit treated with CPPU which could be widely applied in enterprises. Enterprises only need to measure the electrical parameters through online intelligent detection equipment to determine whether kiwifruit has been treated with CPPU. This method could promote efficiency and cost saving, and it could accelerate the detection speed and ensure the quality and safety of kiwifruit sufficiently.