PMID- 31642305 OWN - NLM STAT- MEDLINE DCOM- 20191025 LR - 20200108 IS - 1872-2059 (Electronic) IS - 1000-8713 (Linking) VI - 37 IP - 9 DP - 2019 Sep 8 TI - [Simultaneous determination of twenty amino acids and six carbohydrates in soy sauce by ion chromatography with integrated pulsed amperometric detection]. PG - 996-1003 LID - 10.3724/SP.J.1123.2019.03030 [doi] AB - A method of gradient elution ion chromatography with integrated pulsed amperometric detection for simultaneous determination of twenty amino acids and six carbohydrates in soy sauce was established. The effects of column temperature, pH value of solution, and standing time were studied, and then the suitable gradient elution conditions were found for the determination. In the conditions that the flow rate is 0.25 mL/min, pH value of solution is in the range of 5.2-6.7, temperature of column is 35℃, the linear relationships of the 26 components are good and the correlation coefficients are not less than 0.995. Except glutamine, leucine, isoleucine and methionine, the limits of detection (S/N=3) of the other 22 components are less than 0.03 mg/L. The recoveries of the 26 components in soy sauce are 84.2%-109% at the spiked levels of 0.20, 0.50, 2.00 mg/L, and the relative standard deviations (RSDs) are in the range of 2.7%-7.8%. The method is efficient, easy, sensitive, and accurate for simultaneous determination of amino acids and carbohydrates in soy sauce, and can provide an effective research technique for adulterated soy sauce. FAU - Song, Weide AU - Song W AD - Rizhao Customs, Rizhao 276826, China. FAU - Su, Zheng AU - Su Z AD - Rizhao Customs, Rizhao 276826, China. FAU - Hui, Xidong AU - Hui X AD - Rizhao Customs, Rizhao 276826, China. FAU - Xu, Chonglong AU - Xu C AD - Rizhao Customs, Rizhao 276826, China. FAU - Du, Lijun AU - Du L AD - Taiyuan Customs, Taiyuan 030024, China. FAU - Zhang, Chuanjie AU - Zhang C AD - Rizhao Customs, Rizhao 276826, China. LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Amino Acids) RN - 0 (Carbohydrates) SB - IM MH - Amino Acids/*analysis MH - Carbohydrates/*analysis MH - Chromatography, Ion Exchange MH - Soy Foods/*analysis OTO - NOTNLM OT - amino acid OT - carbohydrate OT - gradient elution OT - integrated pulsed amperometric detection OT - ion chromatography (IC) OT - soy sauce EDAT- 2019/10/24 06:00 MHDA- 2019/10/28 06:00 CRDT- 2019/10/24 06:00 PHST- 2019/10/24 06:00 [entrez] PHST- 2019/10/24 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] AID - 10.3724/SP.J.1123.2019.03030 [doi] PST - ppublish SO - Se Pu. 2019 Sep 8;37(9):996-1003. doi: 10.3724/SP.J.1123.2019.03030.