数字农科院2.0

A novel analytical strategy for rapid detection of antibiotic dregs adulteration in feed protein materials by headspace gas chromatography–ion mobility spectrometry

文献类型： 外文期刊

作者： Shouxue Li;Yuchao Feng;Yushu Zhang;Xia Fan

作者机构：

关键词： feed safety;headspace-gas chromatography-ion mobility spectrometry;multivariate statistical analysis;volatile organic compounds

期刊名称： Quality Assurance and Safety of Crops and Foods

ISSN： 1757-8361

年卷期： 2025 年 17 卷 1 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The recognized shortage of feed protein materials (FPM), together with their high prices, has almost inevitably led to economically motivated adulteration. In this study, a rapid and accurate headspace gas chromatography–ion mobility spectrometry (HS-GC-IMS) method was applied to detect soybean meal (SM) and cottonseed meal (CM) adulteration with oxytetracycline dregs (OD). A total of 98 volatile compounds were detected in the 14 samples (5 SM, 5 CM, and 4 OD). FPMs and adulterated FPMs in different proportions (0.1, 0.5, 1, and 5%, w/w) were classified based on their volatile compounds using principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA). The OPLS-DA model could identify SM-adulterated samples with an OD content of 0.5–5% and CM-adulterated samples with an OD content of 1–5%. More importantly, 18 volatile compounds (ether and heterocycle [1 each], acids and terpenes [2 each], and ketones, alcohols, aldehydes, and esters [3 each]) were proposed as volatile markers for OD authentication from FPMs. These results confirmed the potential of HS-GC-IMS to evaluate volatiles in FPMs and are meaningful for FPMs quality. The environmental factors and sample differences will be investigated in future studies to improve the robustness and reliability of HS-GC-IMS.

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