Do you have any other questions about writing up your results? It also required a sturdy container to protect the validity of the sample. How do they measure using graph paper. The dependent variable is the rate of growth of bread mold. How do they chart the dates of first growth of all the different molds? Where on the bread did the mold grow? Once you have tried out this experiment, you can try out further experiments using different materials. Fungal spores are always floating around in the air, and when the spores land on a piece of bread that contains sufficient moisture, they will germinate and start growing. Mold spores are always in the air, so if you put a piece of bread in the dark with the right amount of moisture and at the right temperature, it will always grow mold.
However, it appears they may have overlooked a mold on one of the bread types as it all has blue but they only wrote that to of the samples had growth. You could measure the time it takes for the mold colonies to appear, measure the time until spores the dark color of mold colonies , or measure the percent area of the bread that is covered by the mold. Mold is often present even if it is not visible and it is not something you want to breathe in. You can take this project further by measuring how much mold is on each piece of bread after a certain number of days. Please read the instructions and recommended ages for each activity before deciding if the activity is appropriate for the children or child who will be doing the activity. Adding a small amount of edible chemicals like acetic acid or prop-ionic acid to the bread will also help to preserve it longer.
I thought that this would help people to find the best place to store the bread so that it would stay fresh and last longer. The clearer the distinction between independent and dependent variable is, the easier understanding experiments will be. Microsoft Encarta, 2007 This literature review shows that refrigeration slows the growth rate of mold. Here is a list of materials you will need to perform the experiment. The researchers choose this topic because she thinks it will be beneficial to find a way to keep food from molding. I will prepare 4 pieces of bread with different moisture and look at how it affects the mould.
Mold spores are everywhere just waiting for the right environment to grow and multiply in. Carefully place a piece of bread in each of the milk-saturated bags and secure. Black Bread Mold Black bread mold Rhizopus stolonifer is one of the most common bread molds. Too high a temperature can kill a mold colony. Some are harmless, but some are not, so it's best to avoid eating moldy bread. Record the time of day when this is complete.
So, select a hypothesis and using the appropriate materials perform the experiment again. The information gathered in this experiment may be relevant to those individuals who contend with food borne molds at home, or professionally. It is easy to mistake mold for clusters of tiny plants, but in reality mold is neither plant nor animal. Materials List- · 3 loaves of non-organic white, wheat, and rye breads , 3 loaves of organic white, wheat, and rye breads , 12 sandwich sized plastic Ziploc baggies, a roll of Paper Towels, Sharpies, Scissors, Blow Dryer, and a Ruler. Get all the equipment and materials together. Also on the orange mold, the ww only had growth on 2 samples.
Hypothesis 4: Mold grows only near neutral pH and not in an acidic environment. Title: Bread Mold Lab Purpose: The purpose of this lab was to test the effect of water on bread mold growth. Food in refrigerators seems to keep longer than food left out in the sun. What we did is place the containers upside down on the xerox machine and got a picture. Mold will likely be present on the cubes with lemon juice despite the pH discrepancy.
Neither you, nor the coeditors you shared it with will be able to recover it again. If the mold covers more than half a square, count it as 1cm, if less than half a square, count as 0 cm. One problem that many bread mold science projects have is that results are not measured. Hypothesis 1: Mold grows faster in light than in the dark. On the other hand, there are other food industries that take measures to preserve the produce from molds. However, the sample that was in the refrigerator will have a slower growth. The bread stayed the same size.
However, you should not try to identify the mold growing in your samples. Donna Hardy Hi Li'l Jo, I've never seen a scientific reference on this particular subject. If you can, take a photograph of the mold each day. At the end of ten days, the samples are collected, measured and photographed. Mold can grow on almost all substances that contain organic hydrocarbons, such as bread. Schooling a Monkey is not responsible for any damage or injuries that occur while replicating any of our activities.
Mold spores are everywhere—in the dirt, on doorknobs, on your clothes and in the air. The availability of mold spores, a suitable medium such as bread, suitable temperatures and considerable moisture are the four basic requirements for the growth of bread mold. If something happens within the experiment that was not in the original parameters, then one is able to check their map and see where the error is. This method of measurement is not manageable because the data cannot be compared to itself easily. Mold is a natural part of our world and it will not do you harm in these small quantities. Contrary to expectations, pH did not have a pronounced effect on mold growth, other than potentially delaying the onset of growth. Resources Moldy Experiments —Want to try out some more bread mold science experiments? I think that this is because it was a better environment for the molds to grow.