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A sugar maple tree. Three species of maple trees are predominantly used to produce maple syrup: the sugar maple (Acer saccharum), [3] [4] the black maple (), [3] [5] and the red maple (), [3] [6] because of the high sugar content (roughly two to five per cent) in the sap of these species. [7]
The pressure flow hypothesis, also known as the mass flow hypothesis, is the best-supported theory to explain the movement of sap through the phloem of plants. [ 1 ] [ 2 ] It was proposed in 1930 by Ernst Münch , a German plant physiologist . [ 3 ]
Of these, the red maple has a shorter season because it buds earlier than sugar and black maples, which alters the flavor of the sap. [4] A few other species of maple are also sometimes used as sources of sap for producing maple sugar, including the box elder (or Manitoba maple, A. negundo), [5] the silver maple (A. saccharinum), [6] and the ...
When a tree is cut down, water does not flow out of the cut surface. The technique used in the movie would only work in early spring or late winter, when the watery sap runs high in the trees. [citation needed] The taps that are placed in maple trees are placed into drilled holes and the resultant fluid is sap, not water. [citation needed]
Collecting sap from sugar maples. The sugar maple is one of the most important Canadian trees, being, with the black maple, the major source of sap for making maple syrup. [24] Other maple species can be used as a sap source for maple syrup, but some have lower sugar content and/or produce more cloudy syrup than these two. [24]
In 1946, some maple syrup producers started using RO to remove water from sap before boiling the sap to syrup. RO allows about 75–90% of the water to be removed, reducing energy consumption and exposure of the syrup to high temperatures.
Maple is considered a tonewood, or a wood that carries sound waves well, and is used in numerous musical instruments. Maple is harder and has a brighter sound than mahogany, which is another major tonewood used in instrument manufacturing. [32] The back, sides, and neck of most violins, violas, cellos, and double basses are made from maple.
Exploding trees were the subject of a 2005 April Fools' Day hoax in the United States, covered by National Public Radio, stating that maple trees in New England had been exploding due to a failure to collect their sap, causing pressure to build from the inside. [33]