Aurantii Fructus Immature (AFI) and Aurantii Fructus (AF) are two important traditional Chinese herbs. As the harvesting time varies, the medicinal value of the plants is not uniform. Consequently, it has been difficult to quickly recognize them within the realm of traditional Chinese medicine. Separation and detection technologies are employed in combination to create fingerprints for identification. We proposed the utilization of graphene-assisted electrochemical fingerprint technology to acquire fingerprints of two varieties of medicinal materials. Simultaneously, we also obtained their fingerprints through HPLC. Two fingerprint recognition technologies were compared for their effectiveness. The findings demonstrate that the signals obtained through electrochemical fingerprinting have a higher recognition rate.

Comparative analysis of Aurantii Fructus Immaturus and Aurantii Fructus via graphene-assisted electrochemical chemometrics
    Abstract
    1 Introduction
    2 Experimental
        2.1 Materials and reagents
        2.2 Flavonoids analysis of AF and AFI via HPLC
        2.3 Extraction of herbal medicinal material
        2.4 SPE modification and fingerprint collection
    3 Results and discussion
    4 Conclusion
    References

• Shuai Yan(Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou 215009, China)
• Huiju Yang(The Third Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450000, China)
• Lianlin Su(School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China)
• Mingyue Zhou(State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa 999078, Macau, China)
• Xiaopeng Wang(Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou 215009, China)