利用化学衍生法和 UHPLC-ESI-QTOF-MS/MS 全面分析和评估农作物中的游离/共轭植物甾醇

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Biomaterials Science & Engineering Pub Date : 2024-09-19 DOI:10.1016/j.foodchem.2024.141316

Qiuhui Xu , Dan Wang , Xin Lv , Hong Chen , Fang Wei

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引用次数: 0

摘要

植物甾醇天然存在于农作物中，但由于分析方法效率低下，其检测灵敏度和准确性受到限制。本研究假设化学衍生与超高效液相色谱-电喷雾四极杆飞行时间质谱相结合的非靶向分析方法可以鉴定不同作物中植物甾醇的不同成分和含量。结果表明，与未衍生化的样品相比，化学衍生化能显著提高植物甾醇的强度。利用 m/z 252.0690 的前体离子扫描（PIS），鉴定了丹酰氯标记的植物甾醇，结果表明油菜籽的总植物甾醇含量最高（3981.2 ± 95.3 mg/kg），其次分别是葵花籽、亚麻籽、玉米和水稻。主成分分析表明，植物甾醇在 15 种作物样本中的分布存在显著差异，这表明植物甾醇图谱可用作含植物甾醇作物的标记。因此，建议的分析方法证明了测定植物甾醇的高效性和准确性，并推进了对富含植物甾醇作物的研究。

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Comprehensive profiling and evaluation of free/conjugated Phytosterols in crops using chemical derivatization coupled with UHPLC-ESI-QTOF-MS/MS

Phytosterols are naturally existed in crops but their detection is constrained by sensitivity and accuracy due to the inefficient analytical approaches. This study hypothesizes that an untargeted analytical method combining chemical derivatization with ultrahigh performance liquid chromatography-electrospray ionization quadrupole time-of-flight mass spectrometry can identify the various composition and contents of phytosterols in different crops. The results showed that chemical derivatization significantly enhanced intensity of phytosterols compared with non-derivatized samples. Using precursor ion scanning (PIS) of m/z 252.0690, dansyl chloride-labeled phytosterols were identified, demonstrating that rapeseeds had the highest content of total phytosterol (3981.2 ± 95.3 mg/kg), followed by sunflower seeds, flaxseeds, corn and rice, respectively. Principal component analysis revealed significant variations in phytosterol distribution among 15 crop samples, suggesting the applicability of phytosterol profile as a marker for phytosterols-contained crops. Hence, the proposed analytic approach proves high efficiency and accuracy in determining phytosterols and advances the study for phytosterol-enriched crops.

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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