Winogradsky column lab page!

Welcome to the Winogradsky column lab page! Students from the Departments of Biological Applications and Technology, University of Ioannina and Icthyology and Aquatic Environment, University of Thessaly, Greece and the Microbiology course, Faculty of Sciences, University of Cádiz, Spain, discuss their findings on Winogradsky columns they constructed!

If you want to add a post, please feel free to contact the blog administrators (Hera Karayanni, Sokratis Papaspyrou or Kostas Kormas)!

Καλωσορίσατε στη σελίδα των Winobloggers! Διαδικτυακός τόπος συνάντησης φοιτητών, φοιτητριών και διδασκόντων δύο Τμημάτων από την Ελλάδα: Tμήμα Βιολογικών Εφαρμογών και Τεχνολογιών, Παν/μιο Ιωαννίνων και Τμήμα Γεωπονίας, Ιχθυολογίας και Υδάτινου Περιβάλλοντος, Παν/μιο Θεσσαλίας και ενός από την Ισπανία: Σχολή Θετικών Επιστημών, Πανεπιστήμιο του Cadiz. Παρακολουθούμε, σχολιάζουμε, ρωτάμε, απαντάμε σχετικά με τα πειράματά μας, τις στήλες Winogradsky!

Bienvenidos a la pagina web de los Winobloggers! Aquí los estudiantes y profesores de dos departamentos griegos, el Departamento de Aplicaciones y Tecnologías Biológicas de la Universidad de Ioannina y el Departmento de Agricultura, Ictiología y Sistemas Acuáticos de la Universidad de Thessalia, junto con los estudiantes de Microbiología de la Facultad de Ciencias en la Universidad de Cádiz, se reúnen para observar, comentar, preguntar y responder a preguntas relacionadas con nuestro experimento, la columna Winogradsky.

Winogradksy columns

Winogradksy columns
'In the field of observation, chance only favors the prepared mind' Pasteur 1854

Blog posts

Thursday, 25 May 2017

Winogradsky Column After three weeks (Group A)

The column that has been in contact with sunlight has created two levels inside the column. The upper level has been pushed and raised to the top because of the gases that the microorganisms of the lower level have caused. The upper level has a clearer color and contrasts with the other level. The color is grayish brown, probably due to the death of microorganisms at this level. On the other hand, a layer of gases has been created, as we have already said. This layer with the small amount of water in the upper level causes oxygen to pass to the lower level. For this reason, microorganisms that function without oxygen can not be developed.
We have lowered the upper level and removed the gas layer, we also introduced some water.
We see in the inferior level diverse colors, purple, brown, orange and the characteristic black that has been intensified enormously.

Let's talk about the column that has been kept in the dark. No major changes are seen in the column. The colors have been maintained. The column has been compacted a little by the top, the cracks have disappeared. The same amount of water is maintained at the top and from time to time there are bubbles there are bubbles that rise from the end of the column, gases generated by microorganisms.

1 comment:

  1. What makes you think that a lack of colour means that there are no bacteria? Bacteria are everywhere! :-)

    What produces all the colours in the lower part of the columns? Which microorganisms produce each one?

    What sort of gases could be the ones generated in the column in the dark?