Tax deduction for non-profit charity

I live at a non-profit retirement community (CCRC).  I purchased a food plan.  I pay $250 and get $450 in credits to pay for meals each month.  When I buy a meal, I use up some credits.   Any credits I do not use up are lost.  Example, I spend $300 in credits and have $150 unused.  Can I take the unused credits and make it a donation to the non-profit CCRC and then take it as a deduction on taxes?