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Targeted Metabolomics Combined with OPLS-DA to Analyze the Differences in Phenolic Compounds in Wampee
Xinghao Tu1,2,3, Guoyan Zhan1,4, Huifang Ma1,4
1Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables, Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, China.
Foods (Basel, Switzerland)
|June 12, 2026
Summary
Wampee phenolic compounds differ significantly across varieties and parts. This research identifies key compounds and metabolic pathways, aiding in variety selection and functional assessment.
Area of Science:
- Agricultural Science
- Food Chemistry
- Plant Biochemistry
Background:
- Phenolic compounds are vital for fruit quality and possess antioxidant and antibacterial properties.
- Clausena lansium (wampee) exhibits diverse varieties with potential differences in bioactive compounds.
- Understanding phenolic profiles is crucial for variety improvement and functional evaluation.
Purpose of the Study:
- To investigate the composition, differences, and metabolic mechanisms of phenolic compounds in the fruits and peels of three wampee varieties.
- To identify key phenolic compounds and their associated biosynthetic pathways.
- To provide a basis for wampee variety identification, improvement, and functional evaluation.
Main Methods:
- High-performance liquid chromatography (HPLC) and mass spectrometry (MS) for phenolic compound profiling.
- Statistical analysis to identify significant differences in phenolic content and composition.
- Pathway analysis to elucidate metabolic mechanisms, including phenylpropanoid and flavonoid biosynthesis.
Main Results:
- Total phenolic content varied between wampee varieties and between fruit and peel tissues.
- Significant differences in flavanols, flavonols, lignans, and phenolic acids were observed.
- 12 differential phenolic compounds in fruits and 9 in peels were identified, with several antioxidants and antibacterials upregulated in specific varieties.
- Pathway analysis indicated enrichment in phenylpropanoid and flavonoid biosynthesis pathways.
Conclusions:
- Distinct phenolic profiles exist among wampee varieties and between their fruits and peels.
- Metabolic pathways like phenylpropanoid and flavonoid biosynthesis are key drivers of these phenolic differences.
- The findings support wampee variety identification, breeding programs, and the utilization of its functional properties.
