From: Doug Skrecky (oberon@vcn.bc.ca)
Date: Tue Sep 04 2001 - 01:38:45 MDT
This is the 44'th update of my fly longevity experiments. As mentioned
in the last update, I am skeptical whether doses of citric acid over 1/4
tsp offer any advantage. I test this again in the current run, along with
acetic acid used by itself or in combination with citric acid. Acetic acid
has been found to increase fly longevity in published studies, but I am
skeptical whether this amounts to anything more than an antipathogen
effect.
As the current results indicate acetic acid in the form of white
vinegar offers no advantage over citric acid. The next run will examine
different types of vinegars.
Run #44 Percent Survival on Day
supplement 10 15 20 27 31 36 41 46 52 57 61 66 71 76 83
____________________________________________________________________
citric acid 1/4 tsp 100 100 100 96 96 96 88 88 80 48 28 16 4 4 0
+ vinegar 1 tbl 96 91 83 83 83 78 61 61 39 13 4 0 - - -
+ vinegar 2 tbl 100 100 100 86 86 82 77 73 45 14 9 0 - - -
citric acid 1/2 tsp 81 81 81 81 81 75 75 63 50 25 0 - - - -
citric acid 1 tsp 100 97 97 89 89 80 77 60 37 9 0 - - - -
vinegar 1 tbl 100 100 93 86 86 86 79 79 57 43 29 0 - - -
vinegar 2 tbl 100 100 88 75 75 63 63 44 19 0 - - - - -
vinegar 3 tbl 94 94 94 81 75 69 69 50 19 0 - - - - -
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