Thank you for your question, and welcome to science buddies. It can be frustrating when an experiment doesn't come out as planned. However, from a science standpoint, the results are the results. If you don't believe your results, and feel there was an error in the proceedures when the experiment was conducted, the only thing to do is reperform it and see if you replicate your results. If there isn't time for that, I suggest reviewing the notes of the experiment closely and see if something suggests why you didn't get the desired results and submit those as your conclusion. It's less fun, but sometimes scientific discovery drives us to report on the "nut that couldn't be cracked". As long as the scientific method was followed and can be written up logically, then you should be fine. That being said, I haven't performed this particular experiment before, but perhaps there is something in the preparation and/or amount of added fruit that nutrilized the enzyme. See if your lab notes point to anything.
Last edited by theborg
on Mon Jan 07, 2013 11:09 pm, edited 1 time in total.
Hope this helps.
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