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Published on: March 6, 2019
Melanoidins from stir-frying Atractylodes Macrocephala: Structural characterization, molecular weight distribution,
Wei Li1, Yajie Zhang2, Xiaoxiao Wang2
1School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin 301617, China.
Abstract:
This study investigates the chemical composition, structural characteristics, and functional properties of melanoidins from stir-frying Atractylodes Macrocephala. Formed through the Maillard reaction during thermal processing, melanoidins were fractionated into high molecular weight (MLD-2) and low molecular weight (MLD-1) components. The results demonstrated that MLD-2 exhibited greater browning intensity, enhanced antioxidant capacity, and improved polyphenol release in the colon, suggesting promising health benefits. Conversely, MLD-1 demonstrated higher fluorescence intensity and distinct thermal characteristics. Structural analysis using FT-IR, NMR, UV-vis, and fluorescence spectroscopy confirmed that molecular weight plays a crucial role in determining the functional properties of melanoidins. These findings underscore the potential of melanoidins as effective carriers for polyphenol delivery, providing valuable insights into their role in enhancing the bioavailability and therapeutic effects of bioactive compounds, particularly in the context of traditional herbal medicines.

