Starch-based dye adsorbents have the characteristics of wide raw materials, renewable sources, good biodegradability and excellent adsorption performance, and have been favored by the scientific community in recent years. In this paper, the mechanism of action of starch-based dye adsorbent was reviewed. According to different modification methods of starch, the preparation methods, adsorption mechanism, structure and properties of starch-based dye adsorbent were reviewed from the aspects of amination modification, ionization modification and complex modification, and the research prospect of starch-based dye adsorbent was also prospected. It can provide reference for the study of starch dye adsorbent.

Erlotinib (ERL) is a tyrosine kinase inhibitor used to treat lung tumours such as non-small cell lung cancer (NSCLC) and pancreatic cancer. Due to the drug's significant adverse effects, it has become necessary to closely monitor the dose throughout treatments, which can be made easier by including therapeutic drug monitoring (TDM) as a standard clinical procedure. A sensitive and specific screen printed electrode (SPE)-based sensor has been developed in the present research to determine the presence of erlotinib in human serum, urine, and pharmaceutical dosage forms. The sensor developed in the study showed a linear response range of 2.0 μM to 34.0 μM. The sensor also exhibited a limit of detection value of 0.03 μM and a limit of quantification value of 0.84 μM, respectively. The successful research in human serum, urine, and tablet dosage forms exhibiting excellent recovery values demonstrated the sensor's applicability. Studying electro-oxidation in the presence of common interfering molecules allowed investigators to quantify the selectivity of the developed sensor. The analytical findings present this technique as a quick, simple, and affordable TDM method for detecting ERL in actual samples.

Electrochemical biosensors have been widely used in detection due to their high sensitivity and low cost. However, the analytes to be analyzed often exist in complex environments and are frequently interfered by other substances such as proteins, cells, polysaccharides and lipids, which affect the sensitivity, accuracy and specificity of the sensors. Therefore, the construction of fouling-resistant sensing platforms to effectively reduce unwanted biological attachments and optimize the sensing process is critical to the performance of biosensors. In this study, the major biofouling and antifouling strategies of electrochemical biosensors are described in detail, and the current research progress of anti-fouling modification interfaces is elaborated from three aspects, namely, physically modified interfaces, chemically modified interfaces and biologically modified interfaces, and the application of anti-fouling and antibacterial dual-performance coatings in electrochemical detection is summarized, which can provide clues for improving the performance of electrochemical biosensors in practical applications.