Quantitative Detection of Adulterated Apple Components in European Sweet Cherries by Droplet Digital PCR

CHEN Jia; QIN Li; LIU Hao; YANG Bo; ZHANG Kaijiang; ZHAO Dongmei; GUO Jinying; ZHANG Yuanyuan

doi:10.13386/j.issn1002-0306.2022010002

Volume 43 Issue 19

Sep. 2022

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Science and Technology of Food Industry > 2022 > 43(19): 349-355. > DOI: 10.13386/j.issn1002-0306.2022010002

CHEN Jia, QIN Li, LIU Hao, et al. Quantitative Detection of Adulterated Apple Components in European Sweet Cherries by Droplet Digital PCR[J]. Science and Technology of Food Industry, 2022, 43(19): 349−355. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022010002.

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Quantitative Detection of Adulterated Apple Components in European Sweet Cherries by Droplet Digital PCR

1.
College of Chemical Technology, Shijiazhuang University, Shijiazhuang 050035, China
2.
Hebei Intellectual Property Protection Center, Shijiazhuang 050000, China
3.
Qinhuangdao Food and Drug Inspection Center, Qinhuangdao 066001, China

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Received Date: January 03, 2022
Available Online: August 01, 2022

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Abstract

Abstract

Objective: To establish a method for quantitative detection of adulterated apple components in cherry based on droplet digital PCR (ddPCR). Methods: By screening the component specific primer probes of cherry and apple, the quantitative detection method of ddPCR was established. The fitting curve between quality and DNA content and the fitting curve between DNA content and copy number were constructed. Taking DNA content as the intermediate value, the calculation formulas of quality and amplified copy number were obtained. The linear fitting curves R² were all above 0.99, and the corresponding adulteration model was established to verify the accuracy of the method. Results: The formula for calculating the mass and amplified DNA copy number of cherry and apple: M_cherry=0.0833C−3.8420, M_apple=0.4084C−1.5747. In the adulteration model of cherries and apples, the maximum relative error was −19.17%, which met the statistical requirements. Conclusion: The establishment of a rapid detection method for European sweet cherry products provides a powerful means to combat the adulteration of European sweet cherries, protects the rights and interests of consumers, and is of great significance for promoting the healthy development of the small berry and its product industry.
- European sweet cherries,
- droplet digital PCR,
- quantitative detection,
- adulteration,
- apple

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