The objective of this biology experiment is to determine the influence of microgravity on yeast´s growth. The results will be useful in the perspective of producing medicinals or simply levitated food on orbit.
We will investigate basically the variation of pressure and of pH during yeast´s growth. We will have 30 test tubes per flight containing yeast and flour (which is yeast´s food). During the 1g phase one of us will insert the water inside the tube with a proper injection system. At the begin of the 0g parabola the other one will turnÂ on the heater which will bring the temperature inside the tube atÂ a variable temperature between 40 and 50Â C. After that we willÂ wait a few seconds (usually fourteen) to complete the reaction and will read pressure value on a voltmeter. PH measure will beÂ done optically with a universal liquid titratorÂ on the ground at the end of the flight.Â
All information can be found at the internet site: http://yeasts.cjb.net