Bioactive compound is “a compound which has the capability and the ability to interact with one or more component(s) of the living tissue by presenting a wide range of probable effects” .In a previous study; we discussed the bioactivity concepts and we used, for the first time, the term of "biocompounactive" to more simplify the use of bioactive compound/component in relation to their physicochemical and biological properties (e.g. chemical structure, bioavailability…etc.). The aim of this work is to prove different concepts discussed about “bioactivity” by giving some chosen examples (betalains, polyacetylenes and tocols) that demonstrate different bioactivities of these biocompounactives. Betalains, polyacetylenes and tocols are generally not categorized like the known classes of phytochemicals (phenolics, alkaloids, and terpenes), but exhibit important bioactivities such as antioxidant, antimicrobial, antifungal, anticancer, anti-inflammatory, neuroprotective and radioprotective properties… etc.