Abstract:
: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 r(2) > 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.
journal_name
Food Chemjournal_title
Food chemistryauthors
Hanh VT,Kobayashi Y,Maebuchi M,Nakamori T,Tanaka M,Matsui Tdoi
10.1016/j.foodchem.2015.05.053subject
Has Abstractpub_date
2016-01-01 00:00:00pages
345-350eissn
0308-8146issn
1873-7072pii
S0308-8146(15)00788-8journal_volume
190pub_type
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