Optical sensor arrays for the detection and discrimination of natural products

Abstract

This review provides a brief introduction to the optical sensor array and focuses on its progress toward the detection and discrimination of natural products.

Food for Thought: Optical Sensor Arrays and Machine Learning for the Food and Beverage Industry

“…Areas where assurance might be useful (alongside anticounterfeiting, vide supra), include rapidly assessing the nutrient content of raw ingredients (vitamins, minerals, antioxidants etc. ); 50 monitoring batch to batch variation in production inside sealed containers (e.g., inside a cask or barrel); or assuring a product has met legal minima, such as minimum aging requirements. 51 Returning to the example of whisk(e)y, this is a product where the major processing step is long aging in a closed wooden cask for a legally mandated minimum period (3 years in the case of Scotch Whisky, and often much longer) before blending (or vatting) of multiple casks together into a batch for retail.…”

“…Areas where assurance might be useful (alongside anticounterfeiting, vide supra ), include rapidly assessing the nutrient content of raw ingredients (vitamins, minerals, antioxidants etc. ); 50 monitoring batch to batch variation in production inside sealed containers (e.g., inside a cask or barrel); or assuring a product has met legal minima, such as minimum aging requirements. 51 …”

Dual-Emission Single Sensing Element-Assembled Fluorescent Sensor Arrays for the Rapid Discrimination of Multiple Surfactants in Environments

“…Inspired by the olfactory or gustatory system, the sensor array has become a powerful tool in biosensing, especially in rapid discrimination of multiple targets in complex samples. − Typically, the identification of various analytes can be realized by analyzing the characteristic fingerprints originating from the responses of probes to analytes. ,− Nevertheless, the development of sensor arrays for surfactant identification is rarely reported. , Wherein, Luo et al synthesized two fluorescent nanomaterials as signal receptors to establish a fluorescent sensor array for multiple surfactant detection, whereas the preparation of multiple sensing units will increase the synthetic cost, analytical operation, and detection time, as well as disturb the repeatability. , To simplify the array, an individual sensing unit with multiple signal channels could provide an effective strategy to avoid the above issues, , highlighting the variations between individual analytes based on the completely different responses . For instance, Yu et al prepared an Au–Ag nanocomposite with three signal channels (the fluorescence, light scattering, and absorption) as sensing units against sulfur species .…”

Nanozyme Inhibited Sensor Array for Biothiol Detection and Disease Discrimination Based on Metal Ion-Doped Carbon Dots

“…By mimicking mammals’ gustatory or olfactory systems, array-based sensing methods are powerful approaches for the simultaneous determination and discrimination of multiple analytes with similar structure or chemical characteristics. − The sensor array is composed of cross-responsive sensing elements, which is different from ‘‘key-and-lock” sensors consisting of specific receptors, to produce composite responses for detection and identification of various targets. − Many kinds of quantum dot based sensor arrays have been devised for the identification and detection of biothiols. − However, complicated synthesis and low sensitivity limit their practical applicability. Hence, the further development of highly sensitive and cost-effective sensor arrays for biothiol monitoring is still desirable.…”