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High-Resolution QTOF-MRM for Highly Accurate Identification and Quantification of Trace Levels of Triterpenoids in Ganoderma lucidum Mycelium.
Journal of the American Society for Mass Spectrometry ( IF 3.2 ) Pub Date : 2021-08-19 , DOI: 10.1021/jasms.1c00175
Khwanta Kaewnarin 1, 2 , Suphitcha Limjiasahapong 2 , Narumol Jariyasopit 1, 2 , Krittima Anekthanakul 1, 2 , Alongkorn Kurilung 1, 2 , Stephen Choong Chee Wong 3 , Yongyut Sirivatanauksorn 2 , Wonnop Visessanguan 4 , Sakda Khoomrung 1, 2, 5
Affiliation  

The accurate quantification of triterpenoids in Ganoderma lucidum mushroom in the mycelium stage is challenging due to their low concentrations, interference from other possible isomers, and the complex matrix. Here, a high-resolution quadrupole-time-of-flight mass spectrometry "multiple reaction monitoring" with target enhancement (HR-QTOF-MRM) method was developed to quantify seven target triterpenoids in G. lucidum. The performance of this method was compared against an optimized QQQ-MRM method. The HR-QTOF-MRM was shown to be capable of distinguishing target triterpenoids from interferent peaks in the presence of matrices. The HR-QTOF-MRM LOD and LLOQ values were found to be one to two times lower than those derived from the QQQ-MRM method. Intraday and interday variabilities of the HR-QTOF-MRM demonstrated better reproducibility than the QQQ-MRM. In addition, excellent recoveries of the analytes ranging from 80 to 117% were achieved. Spiking experiments were carried out to verify and compare the quantitative accuracy of the two methods. The HR-QTOF-MRM method provided better percent accuracy, ranging from 84% to 99% (<3% RSD), compared with the range of 69 to 114% (<4%RSD) given by the QQQ-MRM method. These results demonstrate that the new HR-QTOF-MRM mode is able to improve sensitivity, reproducibility, and accuracy of trace level analysis of triterpenoids in the complex biological samples. The triterpenoid concentrations were in the range of nondetect to 0.06-6.72 mg/g of dried weight in fruiting body and to 0.0009-0.01 mg/g of dried weight in mycelium.

中文翻译:

高分辨率 QTOF-MRM 用于高精度鉴定和定量灵芝菌丝体中痕量三萜类化合物。

由于三萜类化合物的浓度低、其他可能的异构体的干扰以及复杂的基质,因此在菌丝体阶段对灵芝蘑菇中的三萜类化合物进行准确定量具有挑战性。在这里,开发了一种高分辨率四极杆飞行时间质谱“多反应监测”与目标增强(HR-QTOF-MRM)方法,用于量化灵芝中的七种目标三萜类化合物。将该方法的性能与优化的 QQQ-MRM 方法进行了比较。HR-QTOF-MRM 被证明能够在存在基质的情况下将目标三萜类化合物与干扰峰区分开来。发现 HR-QTOF-MRM LOD 和 LLOQ 值比从 QQQ-MRM 方法得出的值低一到两倍。HR-QTOF-MRM 的日内和日间变异性表现出比 QQQ-MRM 更好的重现性。此外,还实现了 80% 至 117% 的分析物回收率。进行了加标实验以验证和比较两种方法的定量准确性。HR-QTOF-MRM 方法提供了更好的百分比准确度,范围为 84% 至 99% (<3% RSD),而 QQQ-MRM 方法给出的范围为 69% 至 114% (<4%RSD)。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。此外,还实现了 80% 至 117% 的分析物回收率。进行了加标实验以验证和比较两种方法的定量准确性。HR-QTOF-MRM 方法提供了更好的百分比准确度,范围为 84% 至 99% (<3% RSD),而 QQQ-MRM 方法给出的范围为 69% 至 114% (<4%RSD)。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。此外,还实现了 80% 至 117% 的分析物回收率。进行了加标实验以验证和比较两种方法的定量准确性。HR-QTOF-MRM 方法提供了更好的百分比准确度,范围为 84% 至 99% (<3% RSD),而 QQQ-MRM 方法给出的范围为 69% 至 114% (<4%RSD)。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。进行了加标实验以验证和比较两种方法的定量准确性。HR-QTOF-MRM 方法提供了更好的百分比准确度,范围为 84% 至 99% (<3% RSD),而 QQQ-MRM 方法给出的范围为 69% 至 114% (<4%RSD)。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。进行了加标实验以验证和比较两种方法的定量准确性。HR-QTOF-MRM 方法提供了更好的百分比准确度,范围为 84% 至 99% (<3% RSD),而 QQQ-MRM 方法给出的范围为 69% 至 114% (<4%RSD)。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。4%RSD) 由 QQQ-MRM 方法给出。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。4%RSD) 由 QQQ-MRM 方法给出。这些结果表明,新的 HR-QTOF-MRM 模式能够提高复杂生物样品中三萜类化合物痕量分析的灵敏度、重现性和准确性。子实体中三萜类化合物的浓度为0.06-6.72 mg/g干重,菌丝体干重为0.0009-0.01 mg/g。
更新日期:2021-08-19
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