By Kori ~ September 11th, 2010.
This weekâ€™s Wine Word of the Week is photosynthesis.
Official definition from Jancis Robinsonâ€™s The Oxford Companion to Wine:
Photosynthesis is a biochemical reaction which combines water and atmospheric carbon dioxide using the energy of the sun to form sugars in plants, including vines. Important in this process are the green chlorophyll pigments in leaves which capture the sunâ€™s energy. Photosynthesis is the essential first step in the wine-making process, as the sugars formed in photosynthesis, along with other chemical products derived from sugar, are transported to grape berries and eventually fermented into ethanol to produce wine.
Laymanâ€™s terms from Kori:
Photosynthesis is the process by which chlorophyll in the leaves uses sunlight to convert carbon dioxide into sugar and oxygen, thereby ripening the grapes.
Filed under: Wine Word of the Week