Shikonin is a naphthoquinone pigment present in the hairy roots of the plant species from the Boraginaceae family. The compound has been well investigated for its highly efficient medicinal, antioxidant, and antimicrobial properties. Various extraction methodologies have been employed to maximise yield while minimising waste production of shikonin and its derivatives. Despite substantial research on shikonin and Boraginaceae plants, a research gap persists in the food industry and extraction technologies. This review addresses crucial aspects of shikonin deserving of further exploration. It begins by elucidating the attributes of the Boraginaceae plants and their medicinal traits in folklore. It proceeds to focus on the roots of the plant and its medicinal properties, followed by extraction procedures explored in the last fifteen years, emphasising the novel technologies that have been chosen to improve the yield extract while minimising extraction times. Furthermore, this review briefly outlines studies employing cell culture techniques to enhance in vitro shikonin production. Lastly, attention is directed towards research in the food industry, particularly on shikonin-loaded biodegradable films and the antioxidant activity of shikonin. This review concludes by summarising the future potential in food science and prominent research gaps in this field.

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Background and objectives Current chemotherapies of cutaneous leihmaniasis have faced to some problems and limitations; Development of new leishmanicidal drugs from different sources like herbal plants, are crucially important. The objective of the present study was evaluation of in vitro activity of Alkanna frigida extracts in comparison with glucantime against Leishmania major. Materials and methods L. major promastigotes were exposed to different concentrations of the A. frigida extracts, processed by ethyl acetate, ethanol, hexane and chloroform. The inhibitory effect, as the IC50, were calculated after 24, 48 and 72 hours by linear regression analysis values of the concentrations employed. Results The significant inhibition was observed after 24 and 48 hours with different concentrations of compounds (p Conclusion The results indicated that the A. frigida has appropriate inhibitory effects on the growth of L. major promastigotes in vitro and can be of herbal targets for further investigation in vivo.

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In nature, chiral natural products are usually produced in optically pure form-however, occasionally both enantiomers are formed. These enantiomeric natural products can arise from a single species or from different genera and/or species. Extensive research has been carried out over the years in an attempt to understand the biogenesis of naturally occurring enantiomers; however, many fascinating puzzles and stereochemical anomalies still remain.

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