title: Phytochemicals in sweet sorghum ( Dura ) and their antioxidant capabilities against lipid oxidation.
abstract: Hydrophilic (HPE) and lipophilic (LPE) extracts were obtained from the Louisiana sweet sorghum millets. Nine major hydrophilic phytochemicals were quantified at levels of 8.9 μg/g for cinnamic acid to 1570.0 μg/g for apigeninidin. Lipophilic phytochemicals (α- and γ-tocopherol, lutein, and β-carotene) were quantified at levels of 7.7, 145.7, 4.8, and 18.8 μg/g, respectively. The total phenolic contents of HPE and LPE were 768.9 and 97.6 μg of catechin equivalent/g, respectively, while DPPH activities were 6.5 and 0.8 μmol of Trolox equivalent/g for HPE and LPE, respectively. In an emulsion model, HPE exhibited higher capability of inhibiting cholesterol oxidation and stabilizing linoleic acid than LPE. Inhibition rates of cholesterol oxidation for HPE and LPE at 40 μg/mL were 92.2% and 65.4%, respectively. Retention rates of linoleic acid were 70.4% for HPE and 33.6% for LPE at a given concentration. Thus, HPE of sweet sorghum millet has potential in functional food applications.
authors.affiliation: School of Nutrition and Food Sciences, Louisiana State University Agricultural Center , Baton Rouge, Louisiana 70803-4200, United States.
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Shen
authors.forename: Xiumei
authors.initials: X
authors.lastname: Zhang
authors.forename: Witoon
authors.initials: W
authors.lastname: Prinyawiwatkul
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Xu
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D010084:Oxidation-Reduction; D010936:Plant Extracts / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D045868:Sorghum / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D008055:Lipids; D010936:Plant Extracts