{"id":101,"date":"2021-11-05T13:01:24","date_gmt":"2021-11-05T12:01:24","guid":{"rendered":"https:\/\/docenciamicrobiologia.umh.es\/?page_id=101"},"modified":"2026-01-09T11:21:45","modified_gmt":"2026-01-09T10:21:45","slug":"produccion-de-pigmentos","status":"publish","type":"page","link":"https:\/\/docenciamicrobiologia.umh.es\/en\/indice-de-practicas\/5-identificacion-bacteriana\/produccion-de-pigmentos\/","title":{"rendered":"Pigment production"},"content":{"rendered":"

Overview<\/strong>
\nIts formation in many microorganisms depends on the presence of light, the composition of the substrate and the incubation temperature.
\nSome bacteria can synthesize pigments that would be observed in both general culture media and also in media with other substrates.<\/p>\n

The Pseudomonas<\/em> synthesize, according to their species, different pigments such as for example the pyocyanin that turns cultures blue, which means that they can be identified. The fluorescein or pyoverdine turn colonies a fluorescent green color. This pigment has Pseudomonas<\/em> fluorescens.<\/p>\n

The S. aureus<\/em> colonies also look pigmented in general culture media. The species is named after the golden color of the colonies.<\/p>\n

Some species of Micrococcus, such as M. luteus<\/em> and M. roseus<\/em> produce yellow or pink colonies, when they grow on a solid medium.<\/p>\n

Carrying out the practical<\/strong>
\nA nutrient agar plate is inoculated using the inoculation loop technique<\/a> or the streak plate method.<\/a><\/p>\n

Incubate at 37\u00baC for 24 hours.<\/p>\n

After the incubation period the color of the colonies is observed.<\/p>\n

Example of the color of Micrococcus luteus<\/em> in nutrient agar.<\/p>\n\n\n\n
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Example of the color of Pseudomonas sp<\/em> in nutrient agar and under UV light.<\/p>\n\n\n\n
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Apoyo a acciones de Innovaci\u00f3n Docente – Vicerrectorado de Estudios \/ Consultas e incidencias t\u00e9cnicas- Tlf: 96 522 2059 – info@goumh.es <\/a><\/span><\/p>","protected":false},"excerpt":{"rendered":"

Overview
\nIts formation in many microorganisms depends on the presence of light, the composition of the substrate and the incubation temperature.
\nSome bacteria can synthesize pigments that would be observed in both general culture media and also in media with other substrates.
\nThe Pseudomonas synthesize, according to their species, different pigments such as for example the pyocyanin that […]<\/p>\n","protected":false},"author":3782,"featured_media":0,"parent":83,"menu_order":80,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"_links_to":"","_links_to_target":""},"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n