Journal
FOOD CHEMISTRY
Volume 382, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.132251
Keywords
Ascorbic acid; Eugenol; Electrochemical sensor; Herbs; Kabasura kudineer
Funding
- CSIR [03 (1419) /18/EMR-II]
- MHRD-RUSA 2.0 [F.24-51/2014-U]
- DST-PURSE Phase [2/38 (G)]
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A voltammetric sensor based on hydroxyapatite-TiO2 composite modified GCE has been developed for the selective and simultaneous determination of ascorbic acid (AA) and eugenol (EUG). This sensor has practical applicability in the food and pharmaceutical industries.
Ascorbic acid (AA) and eugenol (EUG) are well-known antioxidants found in several fruits, spices and herbs. In particular, the EUG, one of the major phytocompounds present in clove, acts as pro-oxidant or anti-oxidant depending on its concentration. Considering the medical importance of AA and EUG and its extensive usage in the form of food and medicine, we have developed a voltammetric sensor based on hydroxyapatite-TiO2 composite modified GCE for their selective and simultaneous determination over very wide linear range of 2.78-2490 mu M for AA and 1.4-78 mu M for EUG with the LODs of 63.3 nM and 94 nM respectively. Practical applicability of the prepared electrode has been demonstrated by detecting AA and EUG in lemon juice, vitamin tablet, clove oil and Kabasura Kudineer, an herbal decoction used as an immunity booster against number of diseases including Covid-19. The proposed HAP-TiO2/GCE shall be useful for food and pharmaceutical industries.
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