X-Message-Number: 24598
Date: Tue, 7 Sep 2004 20:40:10 -0700 (PDT)
From: Doug Skrecky <>
Subject: 150'th update on fly longevity experiments

     This is the 150'th update of my fly longevity experiments. Average
 temperature was 26.4 C during this run. Estimated maximal longevity using
 the formula (363 - T*11.2) is 68 days.
     Here I retest cinnamon and tyrosine.
     Again tyrosine was toxic, and I probably wouldn't have bothered with
 it, if I had known the results of the past several experiments, before
 starting this one. Cinnamon may have been beneficial, but only at a low
 dosage. Run #159 is testing even lower dosages of cinnamon. The lack of
 advantage for citric 1/2 tsp dosage over 1/8 tsp was a surprise. Is there
 a temperature dependance on citric acid effects?

 Run #150                           Percent Survival on Day
 supplement                   5  10 22 31 37 43 48 53 58 63 69 74
 ________________________________________________________________
 citric 1/8 tsp             100 100 97 73 64 55 42 27 18  9  3  0
 + tyrosine 1 gm             70  67 53 37 27 13 13  7  3  3  3  0
 citric 1/2 + glucose 1 tsp  97  97 78 63 47 25  9  3  3  0  -  -
 + cinnamon 1/4 tsp         100 100 94 84 74 60 38 26 10  2  0  -
 + cinnamon 1 tsp            63   6  0  -  -  -  -  -  -  -  -  -
 + cinnamon extract 4.5%    100 100 74 62 52 38 24 14  5  0  -  -
 + cinnamon extract 9%      100  95 60 55 38 17  5  5  0  -  -  -
 + cinnamon extract 18%      86   6  0  -  -  -  -  -  -  -  -  -
 + tyrosine 1 gm             44  39 39 26 18 13  5  3  0  -  -  -
 glucose 4 tsp              100 100 86 67 64 42 19 14  8  3  0  -
 + tyrosine 1 gm             52  48 33 26 19  4  4  4  4  0  -  -
 sucrose 4 tsp               97  93 72 59 48 28 14  7  3  0  -  -

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