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    Item type:Publication,
    Low-cost Multispectral Acquisition Device Coupled with Machine Learning for Detecting Adulteration of Honey
    (2026-07-15)
    Boodnon, Wutthiphong
    ;
    Lunvongsa, Thayanont
    ;
    Suntisakoonwong, Phanchay
    ;
    Sitorus, Agustami
    ;
    Lapcharoensuk, Ravipat
    Honey is a natural sweetener created by honeybees from the nectar of flowers. Honey's extensive health benefits have led to its widespread use across multiple industries. Honey adulteration with inferior substances undermines its quality, reducing natural nutrients and antioxidants, and diminishing its health benefits. This study aimed to study the possibility of detection of honey adulteration with a low-cost multispectral device coupled with machine learning. The adulterated honey came from deliberate adulteration with cane syrup in the 1 to 90% range. Spectral data was collected for pure honey and the adulterated honey samples at the wavelengths of 610, 680, 730, 760, 810, and 860 nm. The detection models for distinguishing pure and adulterated honey were developed by Linear Discriminant Analysis (LDA), Partial Least Squares Discriminant Analysis (PLS-DA), C-Support Vector Machine (C-SVM), and K-Nearest Neighbors (KNN). All models achieved high accuracy between 0.91 and 0.98 and maintained balanced precision and recall metrics. This study serves as a guideline for developing a low-cost portable honey authentication device that is practical for real-world applications.
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    Effects of freeze-drying and vacuum-drying on the quality, total phenolic contents,and antioxidant activities of bee honey in northern Thailand
    (2024-01-01)
    Jiamjariyatam, Rossaporn
    ;
    Mekkerdchoo, Orachorn
    ;
    Phucharoenrak, Pakkapong
    ;
    Zheng, Lu
    Weaimed to evaluate the effect of freeze-drying and vacuum-drying on moisture, water activities (aw), total soluble solid (TSS), hydroxymethylfurfural (HMF), diastase activity, total phenolic content(TPCs), and antioxidant activities(ABTS, DPPH, FRAP, ORAC)of longan (Dimocarpus longanLour.) blossomhoneyand Siam weed (Chromolaena odorataLour.) honey. The fresh longanblossomhoneyand Siam weed honeywere collected from a local apiarist in Northern Thailand. Freeze-dryingat 0.013 kPa, −54°C for 72 h or vacuum-dryingat 2.5 kPa at 60°C for 12 h was applied to dehydrate fresh honey. The moisture of freeze-driedsamples was 10.10% for longan blossomhoneyand 11.50% for Siam weed honey, and the awof both freeze-driedhoneyswas 0.43. Freeze-andvacuum-driedproduced more TSS than fresh honeydid(p≤0.05).However, the amounts of TSS derived freeze-dryand vacuum-drywere not significantly different. Freeze-driedhoney contained the highest HMF and the lowest diastase activity regardless of honey origins (p≤ 0.05).Drying processes significantly increased the TPCs levels of honey (approximately 2 folds by freeze-drying method). The antioxidant activity of dried honey was significantly higher than that of fresh honey. It was observed that the freeze-dryingmethod tended to better preserve the antioxidant activity of honey compared to vacuum-drying methods in both typesof honey.The results indicated that drying processes significantly affect the quality of dried honey, including TSS, HMF, diastase activity, TPCs, and antioxidant activity. In this study, freeze-drying emerged as the relatively low temperature drying method that canpreserve the quality of honey, especially in termsof TPCsandantioxidant activity.