How Starbucks turns old coffee and old muffins into laundry detergent

succinic-acidStarbucks turns coffee grinds and old muffins into laundry detergent“, says a second-hand report in the journal Focus on Surfactants [volume 2013, issue 3, March 2013, page 3]:

“The method involves using a mixture of fungi to help break down the carbohydrates in the stale baked goods into simple sugars. The blend is then fermented in a vat where bacteria convert the sugars into succinic acid [the structure of which is pictured here]…

Improbable Research