Method of removing and preventing redeposition of protein soils using sugar esters

摘要

A novel approach to the method of removing and preventing redeposition of protein soils on surfaces using sugar esters is disclosed. Protein deposition and streaking and spotting are common on machine washed dishes. Applicants have found a new method of recycling a sump water composition in an automatic dish machine from a first cleaning cycle into subsequent cleaning cycles using a protein-removing/anti-redeposition agent that can remove and prevent redeposition of protein soils on ware washed surfaces.

主权项

1. A method of removing protein soils from a surface of a ware and preventing redeposition of protein soils onto the surface, the method comprising:
(a) introducing a recycled wash water composition from a sump of a recirculating warewash machine into a wash chamber of the recirculating warewash machine during a cleaning cycle, wherein:
(i) the ware is disposed within the wash chamber and remains stationary during the cleaning cycle; and(ii) the recycled wash water composition comprises wash water composition and rinse aid composition from one or more previous cleaning cycles, wherein the wash water composition comprises water and a detergent composition comprising an alkalinity source and the rinse aid composition comprises water and a protein-removing/anti-redeposition agent comprising a sugar ester; (b) washing the surface of the ware with the recycled wash water composition during a detergent wash step of the cleaning cycle, wherein sugar ester present within the recycled wash water composition reacts under the conditions of the detergent wash step to form sucrose and the sucrose in the recycled wash water composition removes protein soils from the surface of the ware and prevents protein soil in the recycled wash water composition from redepositing on the surface of the ware; (c) collecting the recycled wash water composition from the detergent wash step in the sump; (d) introducing an amount of the rinse aid composition into the wash chamber during a rinse step of the cleaning cycle, wherein the rinse step is subsequent to completion of the detergent wash step; (e) collecting the rinse aid composition from the rinse step in the sump, wherein the collected rinse aid composition and the recycled wash water composition form a sump water composition after the cleaning cycle; (f) recycling the sump water composition into a subsequent cleaning cycle, wherein the sump water composition comprises the recycled wash water composition for the detergent step of the subsequent cleaning cycle; and (g) repeating steps (a) through (e) followed by step (f) in one or more additional subsequent cleaning cycles;wherein a concentration of sucrose in the recycled wash water composition of each subsequent cleaning cycle is increased by the recycling of the sump water composition.