what is glucono delta lactone
(The âlactoneâ part of this ingredientâs name made him suspicious.) Glucono delta lactone is an ingredient in many foods, functioning as a substitute for enzymes in cheese processing or tofu manufacturing; or as a leavening acid in bakery products.he VRG recently received an email from someone who asked us if glucono delta lactone (GDL) was derived from lactose in cowâs milk.