Non-Destructive Fruit Quality Assessment Techniques for Standardizing Phytochemical Content in Pharmaceutical Botanicals

Pharmaceutical botanicals are increasingly recognized as vital resources for drug discovery due to their rich phytochemical profiles. Ensuring consistency and quality in these botanicals, however, remains a challenge because conventional destructive methods for phytochemical analysis are labor-intensive, time-consuming, and unsuitable for large-scale quality assurance. This study investigated the application of non-destructive techniques, particularly near-infrared spectroscopy (NIRS) and hyperspectral imaging (HSI), for assessing fruit quality and standardizing phytochemical content relevant to pharmaceutical applications. Fresh samples of pomegranate, grapes, tomatoes, and blueberries were analyzed using destructive reference methods (HPLC) and compared against predictions generated by NIRS and HSI. Statistical evaluation of predictive performance included regression analysis, root mean square error of prediction (RMSEP), residual predictive deviation (RPD), paired t-tests, and Bland-Altman plots. Results indicated strong predictive accuracy for both techniques, with R²p values exceeding 0.90 for total phenolic content and anthocyanins, respectively, and minimal bias relative to HPLC. ANOVA confirmed significant interspecies variability in phytochemical levels, while NIRS and HSI successfully reproduced these differences, validating their applicability for comparative profiling and industrial quality assurance. The findings affirm that non-destructive tools can substantially reduce reliance on destructive methods, enabling high-throughput, real-time monitoring without compromising sample integrity. Beyond validation, the study highlights their broader potential for improving standardization, ensuring reproducibility, and supporting regulatory compliance in the phytopharmaceutical sector. The integration of these technologies into industrial workflows is proposed as a sustainable solution to enhance efficiency, minimize resource loss, and strengthen consumer and regulatory confidence in botanical-based medicines.