2014, Number 4
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ABSTRACTSolar radiation is the main natural source of energy on Earth; however, high exposure to this radiation has dual effect on animals and plants. In photosynthetic organisms, ultraviolet radiation can cause photo-inhibition over the photosynthetic apparatus. In human beings, unprotected exposure to ultraviolet radiation produces a variety of disease such as skin photo-aging, photo-carcinogens, erythema, edema, and so on. In order to decrease the risk attributed to solar exposure, plants have generated photo-protection mechanism, for instance, synthesis of secondary metabolites such as carotenoids, mycosporine and polyphenols; these compounds can destroy the harmful ultraviolet radiation to photosynthetic process. The present paper discusses the different photo-protection mechanisms present in photosynthetic organisms and their potential use as a source of bioactives substance with applications on solar protection products, preferred by consumers.
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