What molecule am I?
Tannase, or tannin acylhydrolase, is an enzyme that catalyzes the hydrolysis of digallate to gallate. By extension, it also decomposes hydrolyzable gallotannins to glucose and gallate. The image is the crystal structure of tannase from the bacterium Lactobacillus plantarum.
Tannase is used in food processing to decompose tannins in fruit juices such as pomegranate and cranberry. This process removes tannin-caused haze and bitterness from the juices.
So this Thanksgiving, if your cranberry sauce is too bitter, try drinking cranberry juice instead!
The July 13, 2009 MOTW described the marine alga–borne neurotoxin domoic acid. This fall, the Pacific Ocean off the west coast of the United States is so contaminated with domoic acid that officials postponed the Dungeness crab harvesting season. The unusually high algae bloom is attributed to warmer temperatures caused by the El Niño climate condition.
Learn more about this molecule from CAS, the most authoritative and comprehensive source for chemical information.
Molecule of the Week needs your suggestions!
If your favorite molecule is not in our archive, please send us a message. The molecule can be notable for its current or historical importance or for any quirky reason. Thank you!
Stay Ahead of the Chemistry Curve
Learn how ACS can help you stay ahead in the world of chemistry.