I love this recipe for "My Favorite Carrot Ring", however, the carrots always turn a sickly, very unappetizing green color! I have tried various pans; the last couple of times I have used my teflon Bundt pan; have tried a copper jello tube pan, an aluminum tube pan, etc. Any ideas? Is it perhaps the lemon in the recipe? Thanks! Recipe:
3/4 c margarine, 1/2 c brown sugar, 1 1/4 c flour, 1 t baking powder, 1 t soda, 1/2 t salt, 2 beaten eggs, 1 solid c grated carrots, 1 T water, 1 t lemon juice, 1/2 T lemon rind, 1/2 t vanilla
"Cream margarine & sugar in large mixing bowl. Add flour, baking powder, soda & salt. Blend together the egg, carrots, water & lemon, add to flour mixture and stir until well blended.Spoon into a well greased 9 inch ting mold. Place in a pan of hot water. Bake 45-50- min in a 350 degree oven (be sure the water in the pan comes up to at least half way up the ring mold. It should be slightly brown when ready). Take out of the pan of water & let stand for 5 min. Loosen mold with knife & turn out on platter. I refrigerate the leftovers & eat this cold with hot coffee the next day."
My email: {email removed}

According to my research so far, it's because of oxidation and/or a pH change.

http://chowhound.chow.com/topics/444108

Do you peel the carrots? Are they organic? Are they "young" ones and fresh?

Not organic but fresh and young, also peeled. Thanks!

The carrots turning green could be due to a couple different things. If you are using a metal pan, carrots will sometimes turn greenish when left to cool due to the oxidation of the metal, try using a glass pan, or line a pan with parchment or wax paper. And/or you might want to try and blanch your carrots first. Bring a pot of water to a boil, add your carrots. Cook until they reach a bright orange and then strain and immediately drop them in ice water. Blanching vegetables preserves their brightest colors and makes them less sensitive to chemical reactions.

Are there glass tube pans? Have you ever lined a tube pan with parchment paper? I will try the blanching next time; thanks!