Overview Study on The Nutrition Value, Types and Beneficial Effect of Tea and Coffee

Abstract

Both Tea and Coffee have been shown in several epidemiological research and clinical trials to have positive benefits on human health, including hepatoprotective, anti-obesity, anti-diabetic, antihypertensive, and anticancer properties. Additionally, cell-based and animal research corroborate these human findings. These effects have been linked to chlorogenic acid in coffee and epigallocatechin gallate in green tea. These compounds have been suggested to act through a variety of pathways, the most significant of which seems to involve reactive oxygen species. Both have opposing dual effects as prooxidants and antioxidants. By scavenging ROS, their antioxidative impact can cause nuclear factor-κB to be downregulated, which can result in a number of beneficial benefits, including anti-inflammatory effects and cancer cell death. The prooxidant effects, however, can enhance the formation of ROS, resulting in the activation of AMP-dependent protein kinase, which regulates various enzymes and factors that have advantageous functions. Currently, it is uncertain how they can be induced to function as either a prooxidant or an antioxidant, although the levels within cells, the existence of metal cations, and the cells' redox state seem to be significant factors. Significantly, numerous human studies failed to indicate the positive health benefits of coffee and green tea. The varying outcomes might have resulted from several confounding variables such as smoking, gut microbiota, and genetic influences. This chapter explores the existing knowledge regarding the qualities of green tea and coffee to enhance the comprehension of a method for enjoying a healthy longevity. Tea, originating in China, has reached every corner of the globe and has become the most enjoyed drink, following water. This review seeks to enhance current understanding by providing insights into the nutritional benefits of green tea and its pharmacological impacts on people. Moreover, its market share, patents, and formulations for nutraceuticals and pharmaceuticals are presented.