A comparative metabolomics study of flavonoids in sweet potato with different flesh colors (Ipomoea batatas (L.) Lam). (15th September 2018)

• Record Type: Journal Article
• Authors: Wang, Aimin; Li, Rensai; Ren, Lei; Gao, Xiali; Zhang, Yungang; Ma, Zhimin; Ma, Daifu; Luo, Yonghai
• Is Part Of: Food chemistry. Volume 260(2018)
• Page Start: 124
• Page End: 134
• Publication Date: 2018-09-15
• Subjects: Caffeic Acid (PubChem CID:689043) -- Cinnamic Acid (PubChem CID: 444539) -- Quercetin(PubChem CID: 5280343) -- Kaempferol (PubChem CID: 5280863) -- Chrysoeriol (PubChem CID: 5280666) -- Quinic acid (PubChem CID: 6508) -- ρ-Coumaric acid (PubChem CID: 637542) -- Ferulic acid (PubChem CID: 445858) -- O-feruloylquinic acid (PubChem CID:9799386) -- Cyanidin (PubChem CID: 128861); Sweet potato -- Metabolomics -- Flavonoids -- Phenolic acids; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2018.03.125
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Physiological parameters in five different flesh colored sweetpotatos were compared. 29 flavonoids and 27 phenolic acids were identified/annotated. Differential metabolite analysis among five sweetpotato cultivars was carried out. The metabolic profiles of five sweetpotato cultivars were effectively discriminated. Differences were attributed to metabolites involved in the phenylpropanoid pathway. Abstract: To study the diversity and cultivar-specific of phytochemicals in sweet potato, Liquid Chromatography-Electrospray Ionization-Mass Spectrometry was used to analyze the metabolic profiles of five sweet potato cultivars exhibiting different flesh colors: purple, yellow/orange, and white. A total of 213 metabolites, including 29 flavonoids and 27 phenolic acids, were characterized. The flavonoid profiles of the five different cultivars were distinguished using PCA, the results suggested the flesh color accounted for the observed metabolic differences. In addition to anthocyanins, quinic acids and ferulic acids were the prominent phenolic acids, O-hexoside of quercetin, chrysoeriol were the prominent flavonoids in sweet potato tubers, and they were all higher in the OFSP and PFSP than WFSP. The main differential metabolic pathways between the OFSP, PFSP and the WFSP included those relating to phenylpropanoid and flavonoid biosynthesis. This study provides new insights into the differences in metabolite profiles among sweet potatoes with different flesh colors.