Jostaberry Jostaberry The jostaberry ("Ribes" × "nidigrolaria") is a complex-cross fruit bush in the genus "Ribes", involving three original species, the black currant "R. nigrum", the North American coastal black gooseberry "R. divaricatum", and the European gooseberry "R. uva-crispa". It is similar to "Ribes × culverwellii", the Jochelbeere, which is descended from just two of these species, "R. nigrum" and "R. uva-crispa". The cultivated plants are tetraploid. They are descended from two separate first-generation crosses, both of which produced very few fruit. Fertile tetraploids were produced using colchicine. The name "Jostaberry" was created via combining the German words for blackcurrant and
Epicoccum nigrum "E. nigrum". Epicocconone is a fluorescent pigment unique to "E. nigrum". Epicocconone is valuable in terms of its ability to pigment cells orange, which then fluoresce red without impacting cell structure or function. Industrially, "E. nigrum" has a variety of broad applications. It has demonstrated a capacity to biosynthesize nanoparticles from silver and gold, which have applications in chemical, industrial, and medical processes. It has been applied as biological treatment for mechanical oily effluent, reducing the content of hydrogen peroxide, phenols, and chemical oxygen demand in the oily effluent. "Epicoccum nigrum" pigments have been considered as natural replacements for artificial