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Innovative insights into the roasting-driven transformation of volatile compounds and quality markers in flaxseed (Linum usitatissimum L.) oil

文献类型： 外文期刊

作者： Chen, Zhanglian 1 ; Yang, Jiawei 1 ; Fu, Yuxin 1 ; Wan, Yilai 1 ; Liu, Wendi 1 ; Wang, Ting 4 ; Fu, Xizhe 1 ; Liu, Wenyu 1 ; Wei, Changqing 1 ;

作者机构： 1.Shihezi Univ, Sch Food Sci & Technol, Key Lab Agr Prod Proc & Qual Control Specialty, Coconstruct Minist & Prov, Shihezi, Xinjiang, Peoples R China

2.Shihezi Univ, Sch Food Sci & Technol, Nutr & Safety Control Xinjiang Prod & Construct Co, Shihezi, Xinjiang, Peoples R China

3.Shihezi Univ, Minist Educ, Engn Res Ctr Storage & Proc Xinjiang Characterist, Sch Food Sci & Technol, Shihezi, Xinjiang, Peoples R China

4.Xinjiang Acad Agr & Reclamat Sci, Shihezi, Xinjiang, Peoples R China

关键词： dynamic correlation; headspace-gas chromatography-mass spectrometry; maillard reaction product; partial least square-discrimination analysis; roasting

期刊名称：JOURNAL OF FOOD SCIENCE （ 影响因子：3.2； 五年影响因子：4.1 ）

ISSN： 0022-1147

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Roasting is essential for developing the characteristic aroma of flaxseed oil (FSO), yet its impact on oil quality remains underexplored. This study employed headspace-gas chromatography-mass spectrometry coupled with multivariate analysis to elucidate the dynamic changes in volatile compounds and quality characteristics of FSO subjected to varying roasting temperatures. Our findings revealed that seven key aroma compounds, identified through the variable importance in the projection scores of partial least square-discrimination analysis models and relative aroma activity value, served as molecular markers indicative of distinct roasting temperatures. These compounds included 2,5-dimethylpyrazine, 2-pentylfuran, (E)-2-pentenal, 2-ethyl-3,6-dimethylpyrazine, heptanal, octanal, and 2-hexenal. Notably, roasting at 200 degrees C was found to enhance oil stability and antioxidant capacity, with phenolic compounds and Maillard reaction products playing synergistic roles in bolstering these qualities. Network analysis further uncovered significant correlations between these key aroma compounds and quality characteristics, offering novel perspectives for assessing FSO quality under diverse roasting conditions. This research not only enriched our understanding of the roasting process's impact on FSO but also provided valuable guidance for the optimization of industrial roasting practices. This study would provide important practical applications in aroma regulation and process optimization of flaxseed oil.

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