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Development and validation of RT-HPLC-DAD method for biogenic amines determination in probiotic yogurts
Arabian Journal of Chemistry ( IF 6 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.arabjc.2017.12.010
Carla Paulo Vieira , Marion Pereira da Costa , Vitor L.M. Silva , Beatriz da Silva Frasao , Letícia F.M. Campos de Aquino , Yves E.C. de Oliveira Nunes , Carlos Adam Conte-Junior

Abstract A new procedure for the determination of biogenic amines (BAs), putrescine, cadaverine, spermidine, spermine and tyramine, based on the purification through precipitation and centrifugation of peptides in an acid extract from the sample is proposed. The novelty of the procedure in relation to the liquid-liquid purification reported in the literature is based on shortening the time of analysis and reducing BAs losses during sample preparation. The procedure permitted better precision, recovery, and sensibility, particularly in lower concentration levels, when compared to extraction without purification before derivatization. The method was applied to the simultaneous determination of the five aforementioned BAs in commercial yogurt samples by reversed-phase high-performance liquid chromatography (RP-HPLC). The procedure presented adjusted correlation coefficients between 0.980 and 0.997, and linear range in samples of 1–50 mg L−1 (cadaverine), 3–50 mg L−1 (putrescine, spermidine and spermine) and 5–50 mg L−1 (tyramine), with accuracy ranging from 67.81% to 142.78% in the limit of quantification (LOQ) and from 88.99% to 118.26% in other concentration levels. The limit of detection of BAs in yogurt samples was 0.18–4.01 mg L−1, while LOQ ranged between 1 and 5 mg L−1. The intraday relative standard deviation was ≤15.74% in LOQ and ≤10.05% in other concentration levels. The purification step by precipitation was fundamental to eliminate the interferences present in the yogurt samples, and it was relevant to increase the sensitivity of BAs detection when compared to liquid-liquid purification.

中文翻译:

用于益生菌酸奶中生物胺测定的 RT-HPLC-DAD 方法的开发和验证

摘要 提出了一种测定生物胺 (BA)、腐胺、尸胺、亚精胺、精胺和酪胺的新方法,该方法基于对样品酸提取物中的肽进行沉淀和离心纯化。文献中报道的与液-液纯化相关的程序的新颖性是基于缩短分析时间和减少样品制备过程中的 BAs 损失。与衍生前未经纯化的提取相比,该程序允许更好的精度、回收率和灵敏度,特别是在较低浓度水平下。该方法用于通过反相高效液相色谱 (RP-HPLC) 同时测定市售酸奶样品中的上述五种 BAs。该程序显示了 0.980 和 0.997 之间的调整相关系数,以及 1-50 mg L-1(尸胺)、3-50 mg L-1(腐胺、亚精胺和精胺)和 5-50 mg L-1 样品的线性范围(酪胺),定量限 (LOQ) 的准确度为 67.81% 至 142.78%,其他浓度水平的准确度为 88.99% 至 118.26%。酸奶样品中 BA 的检测限为 0.18–4.01 mg L-1,而 LOQ 范围为 1 到 5 mg L-1。日内相对标准偏差 LOQ ≤ 15.74%,其他浓度水平≤ 10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。1-50 mg L-1(尸胺)、3-50 mg L-1(腐胺、亚精胺和精胺)和 5-50 mg L-1(酪胺)样品的线性范围,准确度为 67.81% 至定量限 (LOQ) 为 142.78%,其他浓度水平为 88.99% 至 118.26%。酸奶样品中 BA 的检测限为 0.18–4.01 mg L-1,而 LOQ 范围为 1 到 5 mg L-1。日内相对标准偏差 LOQ ≤ 15.74%,其他浓度水平≤ 10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。1-50 mg L-1(尸胺)、3-50 mg L-1(腐胺、亚精胺和精胺)和 5-50 mg L-1(酪胺)样品的线性范围,准确度为 67.81% 至定量限 (LOQ) 为 142.78%,其他浓度水平为 88.99% 至 118.26%。酸奶样品中 BA 的检测限为 0.18–4.01 mg L-1,而 LOQ 范围为 1 到 5 mg L-1。日内相对标准偏差 LOQ ≤ 15.74%,其他浓度水平≤ 10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。定量限 (LOQ) 的准确度为 67.81% 至 142.78%,其他浓度水平的准确度为 88.99% 至 118.26%。酸奶样品中 BA 的检测限为 0.18–4.01 mg L-1,而 LOQ 范围为 1 到 5 mg L-1。日内相对标准偏差 LOQ ≤ 15.74%,其他浓度水平≤ 10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。定量限 (LOQ) 的准确度为 67.81% 至 142.78%,其他浓度水平的准确度为 88.99% 至 118.26%。酸奶样品中 BA 的检测限为 0.18–4.01 mg L-1,而 LOQ 范围为 1 到 5 mg L-1。日内相对标准偏差 LOQ ≤ 15.74%,其他浓度水平≤ 10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。LOQ 为 74%,其他浓度水平≤10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。LOQ 为 74%,其他浓度水平≤10.05%。沉淀纯化步骤是消除酸奶样品中存在的干扰的基础,与液-液纯化相比,它与提高 BAs 检测的灵敏度有关。
更新日期:2020-01-01
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