Abstract Title:

Potential of Rooibos, its Major C-Glucosyl Flavonoids and Z-2-(β-D-Glucopyranoloxy)-3-phenylpropenoic acid in Prevention of Metabolic Syndrome.

Abstract Source:

Crit Rev Food Sci Nutr. 2016 Jun 15:0. Epub 2016 Jun 15. PMID: 27305453

Abstract Author(s):

Christo J F Muller, Christiaan J Malherbe, Nireshni Chellan, Kazumi Yagasaki, Yutaka Miura, Elizabeth Joubert

Article Affiliation:

Christo J F Muller


Risk factors of type 2 diabetes mellitus (T2D) and cardiovascular disease (CVD) cluster together and are termed the metabolic syndrome. Key factors driving the metabolic syndrome are inflammation, oxidative stress, insulin resistance (IR) and obesity. IR is defined as the impairment of insulin to achieve its physiological effects, resulting in glucose and lipid metabolic dysfunction in tissues such as muscle, fat, kidney, liver and pancreaticβ-cells. The potential of rooibos extract and its major C-glucosyl flavonoids, in particular aspalathin, a dihydrochalcone C-glucoside, as well as the phenolic precursor, Z-2-(β-D-glucopyranoloxy)-3-phenylpropenoic acid, to prevent the metabolic syndrome, will be highlighted. The mechanisms whereby these phenolic compounds elicit positive effects on inflammation, cellular oxidative stress and transcription factors that regulate the expression of genes involved in glucose and lipid metabolism will be discussed in terms of their potential in ameliorating features of the metabolic syndrome andthe development of serious metabolic disease. An overview of the phenolic composition of rooibos and the changes during processing will provide relevant background on this herbal tea, while a discussion of the bioavailability of the major rooibos C-glucosyl flavonoids will give insight into a key aspect of the bioefficacy of rooibos.

Study Type : Review

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