2. Academic Validation
  3. Unveiling multifunctional bioactive phytochemicals and antioxidants in tangerine pomace for value-added applications

Unveiling multifunctional bioactive phytochemicals and antioxidants in tangerine pomace for value-added applications

  • Food Chem. 2025 Aug 6;493(Pt 2):145781. doi: 10.1016/j.foodchem.2025.145781.
Aye Aye Myint 1,  Sabrinna Wulandari 2,  Ruqian Cao 3,  Jongho Choi 3,  Jeong Jaeryeong 4,  Jaehoon Kim 5
Affiliations

Affiliations

  • 1 School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea; School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea.
  • 2 School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea.
  • 3 School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea.
  • 4 SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea.
  • 5 School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea; School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea; SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea. Electronic address: jaehoonkim@skku.edu.
PMID: 40774202 DOI: 10.1016/j.foodchem.2025.145781
Abstract

Tangerine pomace (TGP), a byproduct of juice processing, holds great potential as a source of health-promoting phytochemicals. Its chemical complexity, however, requires high-resolution analytical techniques and tailored solvent strategies for effective extraction. This study utilized comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOF-MS) and Other advanced instrumentations to thoroughly profile solvent-specific phytochemicals extracted with ethanol and n-hexane. The ethanol extract contained 258 volatile and semi-volatile compounds, including high levels of Flavonoids (85.1 mg/g), particularly hesperidin and narirutin, along with organic acids and sugars. In contrast, the hexane extract primarily comprised lipophilic compounds like fatty acid esters, phytosterols, Terpenoids, and tocopherols. The ethanol extract also showed 1.7-2.2 times higher antioxidant activity, driven by its enriched phenolic and flavonoid contents. These findings demonstrate the solvent-dependent extraction efficiency and the diverse phytochemical profile of TGP, supporting its potential as a sustainable source of functional ingredients for food, cosmetics, and pharmaceuticals.

Keywords

Antioxidants; Essential oils; Flavonoids; GC × GC-TOF-MS; Phytosterols; Tangerine pomace; Terpenoids.

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