This research aims to get the technology of production process of the functional beverage of teki extract to obtain the formula of the functional beverage made of teki grass rhizome extract preferred by girls teenagers to cure the dysmenorrhoea problem. Such functional beverage is made of the extract of teki grass rhizome and the extract of any fruits such as pineapple, strawberry, and soursop added sugar and water. The production of teki extract is through the stages of sorting, washing,

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... ing, demolition, blending, heating and filtering. The chemical quality (Ca, Mg and Femineral) and the organoleptic characteristics (hedonic and hedonic quality) of teki extract were analyzed, and the experimentalmouse was pre-clinical tested to know its effect on the heart function by using SGPT and SGOT analysis. The research results show that the formula of teki extract with the rhizome of teki grass and the extract of pineapple (b/b) is recommended based on the hedonic characteristics andhedonic quality of taste, smell and the mineral contain such as Ca (2.27 ppm), Mg (46,94 ppm) and Fe (1,09 ppm).The teki extract has sweet-sour taste and theratherstrongdistinctive smell of teki. Teki extract did not cause heart function disorder of the experiment mouse with the content of SGOT was 109