At 10:29 PM 2/26/2011, you wrote:
A great discussion of maple syrup especially the post by Richard Dufresne on its production.

Does the region in which the maple trees grow affect the flavor of the syrup? I ask this because the wine growers talk about the desirability of using French oak for wine barrels (or Hungarian oak), but the tree is Quercu robur, what we call English oak. Apparently where it grows makes a difference.

Bill Plummer
Southern Tier of New York

The makeup of the soil, including available mineral content, as well as microflora which could tweak the tree's metabolism and ratio of proteins, as well as temporal variables like climate, all could determine the subtleties of the maple syrup. These would be essentially the same effects present with wine grapes. Differences in mineral elements like boron and manganese would affect catalytic reactions and the ratios of products produced. Many of these components are produced in tiny quantities, and have powerful effects on perceived taste. It's not uncommon for flavor and fragrance chemists to discover that a minor component that was previously attributed with having a critical effect on flavor is replaced by one present in lower quantity, but with greater potency.

The golden reference on the Internet for flavor chemicals is the Leffingwell site:

http://www.leffingwell.com/

How chirality affects flavor perception:

http://www.leffingwell.com/chirality/chirality.htm

Chirality reflects on the handedness of how individual atoms or groups of atoms of otherwise identical structures are connected. Think of going from 2D to 3D. The site has rotating 3D chemical structures on it. Here is the page for sotolon, which also has a description of the odors, including desirability and odor threshhold:

http://www.leffingwell.com/chirality/sotolon.htm


Richard F. Dufresne
2119 US 220 Alternate South
Candor, North Carolina 27229 USA
910-974-4009
Alternate e-mail: [email protected]
World of Salvias: <http://www.eclectasy.com/gallery_of_salvias/index.htm>http://www.worldofsalvias.com/
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