Chinese Journal of Chromatography ›› 2019, Vol. 37 ›› Issue (6): 649-654.DOI: 10.3724/SP.J.1123.2019.01006

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Determination of neohesperidin dihydrochalcone and naringin dihydrochalcone in feeds by solid phase extraction-high performance liquid chromatography

PAN Cheng, HU Chaoyang, REN Xiaoying, WU Ling, HUANG Hehe, JIANG Fengling, XIE Yong, QIU Xiuyu   

  1. Fujian Inspection and Research Institute for Product Quality, Fuzhou 350002, China
  • Received:2019-01-06 Online:2019-06-08 Published:2015-04-17

Abstract:

A new method was established for the determination of neohesperidin dihydrochalcone (NHDC) and naringin dihydrochalcone (Naringin DC) in feeds by solid phase extraction-high performance liquid chromatography (SPE-HPLC). The samples were extracted by methanol and were purified on an HLB solid-phase extraction column. Chromatographic separation was achieved on an XB-C18 column (150 mm×4.6 mm, 5 μm) by linear gradient elution using methanol/water as the mobile phase. The analytes were detected by the diode array detector (DAD). The results revealed a good linear correlation (r>0.999) between the peak areas and mass concentrations of dihydrochalcone sweeteners in the range of 0.2-49.0 mg/L. The limits of quantification (LOQs) of NHDC and Naringin DC were 0.02 and 0.01 mg/kg, respectively. Intra- and inter-day reproducibilities were 0.7%-4.1% and 0.9%-6.0%, respectively. The spiked recoveries for the samples and relative standard deviations (RSDs) were 86.2%-105.0% and 1.0%-6.3% (n=3), respectively. It is both sensitive and repeatable for the quantitative determination of neohesperidin dihydrochalcone and naringin dihydrochalcone in feeds, and thus, can be used to effectively reduce interference in feeds.

Key words: feeds, high performance liquid chromatography (HPLC), naringin dihydrochalcone (Naringin DC), neohesperidin dihydrochalcone (NHDC), solid phase extraction (SPE)

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