Research results that the ‘rinse’ for the dishwasher left in the dishes destroys the intestinal barrier – GIGAZINE

Dishwashers are very convenient household appliances that reduce the burden of daily housework, and many people say that once they start using them, they can never go back to hand washing. Such dishwashers may use a rinse agent (rinse agent / dry finish agent) to improve drying efficiency and clean the appearance after drying, but this rinse agent remains on the dishes and destroys the barrier Intestinal Studies have shown that it is dangerous.

Intestinal epithelial barrier damage caused by dishwasher detergents and rinse aids – Journal of Allergy and Clinical Immunology
https://doi.org/10.1016/j.jaci.2022.10.020

Industrial dishwashers can damage the protective inner lining of your gut
https://www.zmescience.com/medicine/industrial-dishwashers-may-harm-your-guts-protective-inner-lining/

A typical dishwasher uses a combination of hot water, detergent and mechanical action to clean dishes and utensils. First, high temperature water is mixed with detergent and sprayed to remove the dirt stuck to the dishes.

At this time, the detergent used for washing is washed away during the rinsing process, but some dishwashers mix hot water and rinse aid during rinsing to improve the drying and cleaning efficiency of the appearance after drying and increasing.Professor of Medicine at the University of Zurich, SwitzerlandCezmi Akdis“The concern is that many appliances don’t have an extra cleaning step to remove excess rinse aid, so the dishes are left with harmful substances as they dry,” he said.

Therefore, the research team of Akdis et al carried out an experiment to investigate the effects of dishwashing detergents and rinsing agents when they reach the human gastrointestinal tract. The lining of the human intestine takes in necessary substances and removes unnecessary ones.intestinal obstructionIntestinal obstructive damage is caused by food allergies andgastritis・ It is associated with diabetes, obesity, cirrhosis of the liver, rheumatoid arthritis, multiple sclerosis, autism spectrum disorder, chronic depression, Alzheimer’s disease, etc. ‘We hypothesize that damage to the intestinal barrier is responsible for the development of 2 billion chronic diseases,’ said Akdis.

In the experiment, human intestinal cells and intestinal tracts are on microchips made from cultured intestinal cellsOrganoidis used to evaluate the toxicity of different commercial detergents and rinse aids at dilution ratios derived from dishwasher water use.

As a result, no toxicity to cells or the intestinal barrier was observed with detergent at a general dilution rate, but when the rinsing agent was used in a large amount and the dilution rate was 1/10,000, it was found to be intestinal toxic. it was found to disrupt the intestinal barrier. The research team also reported that even when the dilution rate of the rinsing agent was a low dose of 1/40,000, the intestinal barrier was adversely affected. In fact, the research team has also extracted the rinsing agent remaining in the cup washed using a commercial dishwasher and confirmed that it is toxic to cells.

Surfactants are thought to be responsible for the toxic effects of rinse aids.alcohol ethoxylatein. When cells were exposed to alcohol ethoxylates, inflammation-related genes and cell signaling proteins were activated.

“The effects we saw are an indication that the dishwasher rinse aids disrupt the epithelial lining of the gut, which can trigger the development of many chronic diseases,” said Akdis.