Multi-phase detection of antioxidants using surface-enhanced Raman spectroscopy with a gold nanoparticle-coated fiber

TALANTA

卷:206

Article

Tu, Qin^1,2  Lin, Zhuangsheng²  Liu, Jinning²  Dai, Haochen²  Yang, Tianxi²  Wang, Jinyi¹  Decker, Eric²  McClements, David Julian²  He, Lili² 

[1] Northwest A&F Univ, Coll Chem & Pharm, Yangling 712100, Shaanxi, Peoples R China

[2] Univ Massachusetts, Dept Food Sci, Amherst, MA 01003 USA

关键词: AuNP-Coated fiber;    SERS;    Multi-phase;    Antioxidant;    Emulsion;   

DOI  :  10.1016/j.talanta.2019.120197

来源: Elsevier

【 摘 要 】

The development of a method for multi-phase detection of antioxidants using surface-enhanced Raman spectroscopy (SERS) with a gold nanoparticle (AuNP)-coated fiber as a substrate is described. The AuNP-coated fiber was directly inserted into a multi-phase system containing model analytes of ascorbic acid, ascorbyl palmitate, and a-tocopherol, representing hydrophilic, amphiphilic, and lipophilic antioxidants, respectively. The AuNP-coated fiber enabled simultaneous detection of antioxidants present within the aqueous, interfacial, and organic phases of the multi-phase system. An oil-in-water emulsion was used as a model multi-phase system, where the antioxidant profiles of the three model analytes were successfully characterized. This method enables rapid, simultaneous, and non-destructive analysis of multiple antioxidants in complex multi-phase systems.

【 授权许可】

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