Antimicrobial activity of Micrococcus luteus Cartenoid pigment


  • Huda Z. Majeed Department of Biology, College of Science, Mustansiriyah University



Micrococcus luteus, Cartenoid piment and Biofilm.


Cartenoids are group of pigments, with enormous types different structurally and functionally, have colors range from red to yellow found in a wide variety of plants, fungi, algae and bacteria. The animals took from food because they cannot make it, on contrary, the plants and microbes produce them due to subjection to environment. The aim of the study is to isolate and characterize the cartenoid pigment from Micrococcus luteus. The pigment extraction was done by acetone, and then was characterized with UltraViolet-Visible spectroscopy (UV–Vis) and Fourier Transform Infrared (FTIR) spectroscopy. Then, it was tested for antibacterial activity against five different bacterial isolates and antifungal activity tests against six different fungal isolates by well diffusion method. The results found that, the extracted pigment having antibacterial activity and antifungal activity and having the ability to absorb UVA rays within the range of 300-500 nm. There was no significant difference in antimicrobial effect of pigment, even when the extraction and isolation were done by two culture mediums (Nutrient Broth and Luria Bertani Broth). There were considerable inhibition percentages of adhesion after subjection to Cartenoid pigment ranged between (5.71, 23.84) % for Klebsiella spp. and Pseudomonas aeruginosa respectively and all the 11 isolate changed from Biofilm producer to non-producer. The isolated compound can be used against different bacterial and fungal infections. So they had a great future in medicine, cosmetics and as a sun protecting agent.


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How to Cite

H. Z. Majeed, “Antimicrobial activity of Micrococcus luteus Cartenoid pigment”, MJS, vol. 28, no. 1, pp. 64–69, Nov. 2017.



Biological Science