Quantitative mass spectrometric analysis of dipeptides in protein hydrolysate by a TNBS derivatization-aided standard addition method

Vu Thi Hanh, Yutaro Kobayashi, Motohiro Maebuchi, Toshihiro Nakamori, Mitsuru Tanaka, Toshiro Matsui

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

The aim of this study was to establish, through a standard addition method, a convenient quantification assay for dipeptides (GY, YG, SY, YS, and IY) in soybean hydrolysate using 2,4,6-trinitrobenzene sulfonate (TNBS) derivatization-aided LC-TOF-MS. Soybean hydrolysate samples (25.0 mg mL-1) spiked with target standards were subjected to TNBS derivatization. Under the optimal LC-MS conditions, five target dipeptides derivatized with TNBS were successfully detected. Examination of the standard addition curves, with a correlation coefficient of r2 > 0.979, provided a reliable quantification of the target dipeptides, GY, YG, SY, YS, and IY, in soybean hydrolysate to be 424 ± 20, 184 ± 9, 2188 ± 199, 327 ± 16, and 2211 ± 133 μg g-1 of hydrolysate, respectively. The proposed LC-MS assay is a reliable and convenient assay method, with no interference from matrix effects in hydrolysate, and with no requirement for the use of an isotope labeled internal standard.

本文言語英語
ページ(範囲)345-350
ページ数6
ジャーナルFood Chemistry
190
DOI
出版ステータス出版済み - 6 3 2016

All Science Journal Classification (ASJC) codes

  • 分析化学
  • 食品科学

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