Standardization of Indonesian Traditional Antihypertensive Medicines (Jamu) through the ACE Inhibitor Mechanism

Introduction: Herbal medicine (jamu) is a traditional Indonesian drug that has been used by the community in efforts to overcome health problems. One of the herbs that are frequently used by the public is antihypertensive jamu. This study aimed to determine the standardization parameters of 8 antihypertensive jamu in the form of specific and nonspecific parameters, antioxidant and angiotensin-converting enzyme inhibitor (ACEI) activity. Materials and methods: Jamu were extracted using ethanol. Nonspecific parameters that are water content, ash content, ash insoluble acid content, level of substances dissolved in alcohol and water, Coliform microbial contamination, and mold/yeast numbers. Determination of specific parameters including determining organoleptic (color and texture), chemical content, identification of infrared spectrum, in-vitro antioxidant activity, and ACE inhibitor activity. Results: nonspecific parameter such is the average water content of 5.92-8.1 v / w; total ash content of 5.85-7.2 w / w, levels of ash insoluble acid content were 0.45-0.55 w/w and the level of substances dissolved in alcohol and water were 24.22-54.21 and 24.22-54,21, respectively. The eight extracts were uncontaminated with coliform, mold, and yeast microbes. Antioxidant and ACE inhibitor activity test showed that all eight extracts had antioxidant activity in vitro with IC₅₀ values ranging from 9.31 - 157.9 ppm and ACE inhibitor activity with the IC₅₀ value is in the range of 18.37-740.8 ppm. Conclusion: The eight antihypertensive jamu met the standard of extract parameters both the specific and nonspecific and have potential in-vitro activities as ACE inhibitors.