This is extremely positive from the viewpoint of chemical analyses, because quantifying only three major elements (namely K, Al, and Mg) in a simple tea infusion naturally results in a simpler, faster and less expensive methodology. Indeed, the chemical signature (fingerprint) of tea leaves, and tea infusions is appropriate for reliable differentiation, because it is not only specific for the given tea plants when grown in a specific geographical region, but also presents essentially no changes for relatively long periods of time (Szymczycha-Madeja et al., 2012). From a biological perspective, we note that potassium is an essential macronutrient for plant growth and magnesium is found in the plant chlorophyll porphyrins involved in photosynthesis. On other hand, Camellia sinensis is one of a few plants to accumulate aluminum, which suggests further study since ingestion of aluminum can precipitate health problems due to both neuro- and osteotoxicity.