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Wang Y, Fu Q, Hu Y, Hua L, Li H, Xu G, Ni Q, Zhang Y. Determination of oxidative deterioration in edible oils by high-pressure photoionization time-of-flight mass spectrometry. Food Chem 2023; 424:136260. [PMID: 37244184 DOI: 10.1016/j.foodchem.2023.136260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/29/2023]
Abstract
Since lipid oxidation often causes serious food safety issues worldwide, determination of oil's oxidative deterioration becomes quite significant, which still calls for efficient analytical methods. In this work, high-pressure photoionization time-of-flight mass spectrometry (HPPI-TOFMS) was firstly introduced for rapid detection of oxidative deterioration in edible oils. Through non-targeted qualitative analysis, oxidized oils with various oxidation levels were successfully discriminated for the first time by coupling HPPI-TOFMS with the orthogonal partial least squares discriminant analysis (OPLS-DA). Furthermore, by targeted interpretation of the HPPI-TOFMS mass spectra and the subsequent regression analysis (signal intensities vs TOTOX values), good linear correlations were observed for several predominant VOCs. Those specific VOCs were promising oxidation indicators, which would play important roles as TOTOX to judge the oxidation states of tested samples. The proposed HPPI-TOFMS methodology can be used as an innovative tool for accurate and effective assessment of lipid oxidation in edible oils.
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Affiliation(s)
- Yan Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China.
| | - Qianwen Fu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China
| | - Yu Hu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China
| | - Lei Hua
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Haiyang Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Guangzhi Xu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China
| | - Qinxue Ni
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China
| | - Youzuo Zhang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan 311300, China.
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Wang Y, Hua L, Fu Q, Wu C, Zhang C, Li H, Xu G, Ni Q, Zhang Y. Rapid Identification of Adulteration in Extra Virgin Olive Oil via Dynamic Headspace Sampling and High-Pressure Photoionization Time-of-Flight Mass Spectrometry. J Agric Food Chem 2022; 70:6775-6784. [PMID: 35623031 DOI: 10.1021/acs.jafc.2c01361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
High-pressure photoionization time-of-flight mass spectrometry (HPPI-TOFMS) combined with dynamic headspace sampling was developed for rapid identification of adulteration in extra virgin olive oil (EVOO). The volatile organic compound (VOC) fingerprints of EVOO, refined rapeseed oil (r-RO), peanut oil (PO), corn oil (CO), fragrant rapeseed oil (f-RO), and sunflower oil (SO) were obtained in just 1.5 min, which enabled satisfactory classification of different edible oils. 1,4-Bis(methylene)cyclohexane and dimethyl disulfide were unique VOCs in r-RO and f-RO, respectively, while 2,5-dimethylpyrazine and 2-methylpyrazine were distinctive VOCs in PO. Percentages as low as 3% r-RO, 1% PO, and 1% f-RO in r-RO-EVOO, PO-EVOO, and f-RO-EVOO mixtures, respectively, were successfully identified based on the characteristic VOCs. Linear regression equations of these VOCs were established and utilized for predicting the adulteration proportions. The good agreements between the actual adulteration proportions and the predicted ones demonstrated that HPPI-TOFMS was reliable for the quantification of EVOO adulteration.
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Affiliation(s)
- Yan Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan, Hangzhou 311300, China
| | - Lei Hua
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China
- Dalian Key Laboratory for Online Analytical Instrumentation, Dalian, Liaoning 116023, People's Republic of China
| | - Qianwen Fu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan, Hangzhou 311300, China
| | - Chenxin Wu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China
- Dalian Key Laboratory for Online Analytical Instrumentation, Dalian, Liaoning 116023, People's Republic of China
| | - Chong Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China
- Dalian Key Laboratory for Online Analytical Instrumentation, Dalian, Liaoning 116023, People's Republic of China
| | - Haiyang Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People's Republic of China
- Dalian Key Laboratory for Online Analytical Instrumentation, Dalian, Liaoning 116023, People's Republic of China
| | - Guangzhi Xu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan, Hangzhou 311300, China
| | - Qinxue Ni
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan, Hangzhou 311300, China
| | - Youzuo Zhang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Food and Health, Zhejiang A & F University, Linan, Hangzhou 311300, China
- Zhejiang Jiaozhi Technology Co., Ltd., Linan, Hangzhou 311300, China
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