Affiliation:
1. College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
Abstract
Wendan (a type of pomelo), a popular fruit in China, is less known in other countries. Its peel is widely used in food and traditional medicine. Four different origins (Xuzhou, Taizhou, Zhangzhou, and Meizhou) of Wendan pomelo were selected, and crude extracts were obtained by the Soxhlet extraction method. The composition of Wendan peel was analyzed by high-performance liquid chromatography–mass spectrometry (HPLC-MS) in positive ion mode. The compounds were identified by searching the Metabolite Link (METLIN), the Spectral Database for Organic Compounds (SDBS), and by referring to literature reports. A total of 20 compounds were identified among the samples from the four origins, of which 8 compounds were common. The majority of the compounds belonged to the flavonoid and coumarin classes; Meranzin hydrate was identified for the first time in pomelo peel. In vitro antioxidant activity experiments showed that samples from Taizhou, Zhejiang, exhibited the highest antioxidant activity in the DPPH, ABTS, and FRAP assays, with values of 0.59 mg/mL, 97.06 μmol TE/g, and 60.62 μmol Fe2+/g, respectively. Samples from Zhangzhou, Fujian, showed antioxidant activity second only to the samples from Taizhou, Zhejiang. The sample from Zhangzhou, Fujian Province, showed excellent inhibitory activity in the α-glucosidase inhibition assay (IC50 = 7.99 mg/mL).
Reference36 articles.
1. Determination of galacturonic acid from pomelo pectin in term of galactose by hpaec with fluorescence detection;Soonthornchareonnon;Carbohydr. Polym.,2010
2. Editorial Committee of the Flora of China, Chinese Academy of Sciences (1997). Flora of China Volume 1 to Volume 65, Science Press.
3. Study on the Antibacterial Activity of the Extract from Peel of Pomelo;Jiang;J. Anhui Agric. Sci.,2008
4. Murunga, A.N., Miruka, D.O., Driver, C., Nkomo, F.S., Cobongela, S.Z., and Owira, P.M. (2016). Grapefruit derived flavonoid naringin improves ketoacidosis and lipid peroxidation in type 1 diabetes rat model. PLoS ONE, 11.
5. Product diversification from pomelo peel. Essential oil, Pectin and semi-dried pomelo peel;Huyen;Pol. J. Chem. Technol.,2021