Effects of Pu-erh tea aqueous extract (PTAE) on blood lipid metabolism enzymes
This study assessed the effects of Pu-erh tea aqueous extract (PTAE) on lipid metabolism (chemical reactions involved in the synthesis and degradation of fatty substances in the body). These laboratory experiments led to determine PTAE active ingredients such as catechins, gallic acid, caffeine, free amino acids and sugar. The researchers concluded that Pu-erh tea has a potent ability to regulate lipid metabolism and could be considered as an alternative substance to reduce blood fatty substances. Further details can be found in the study.
Lipid disorders are characterized by imbalanced levels of fatty substances (i.e. cholesterol and triglycerides) in the bloodstream. These lipids are carried in the blood stream in form of microscopic round particles, called lipoproteins. Thus, these conditions are also called lipoprotein disorders. There are, generally speaking, two types of cholesterol-transporting lipoproteins: a) the “bad cholesterol” are those lipoproteins that carry cholesterol and other fatty substances to the sites of tissue repair, e.g. in the artery walls; the most common representatives of this group are Low-density-lipoproteins (LDL) and, a newer one, Lipoprotein(a), Lp(a). b) the “good cholesterol” are those lipoproteins that carry cholesterol and other fatty substances away from the sites of tissue repair and transport it back to the liver where it is biologically “burnt” One of the most frequent causes why “bad cholesterol” particles are elevated in the blood stream is micronutrient deficiency. This can be easily explained: A deficiency of vitamins causes structural damage to the artery walls and other organs and the body (liver) reacts with an increased production of “repair factors” like LDL and Lp(a). Because the elevation of these risk factors in the blood is already a reaction damage of our body tissue caused by vitamin deficiency, they are considered “secondary” risk factors.
Zeng L, Yan J, Luo L, Zhang D. Effects of Pu-erh tea aqueous extract (PTAE) on blood lipid metabolism enzymes. Food Funct. 2015 Jun;6(6):2008-16.