Presentation Title

The Perfect Bar of Soap for Grandpa: Eliminating The Odor Associated With The Elderly

Faculty Mentor

Asmik Oganesyan

Start Date

17-11-2018 8:00 AM

End Date

17-11-2018 8:15 AM

Location

C335

Session

Oral 1

Type of Presentation

Oral Talk

Subject Area

physical_mathematical_sciences

Abstract

2-trans-nonenal, the molecule often associated with the smell of the elderly, is produced increasingly in our bodies as we age. This unsaturated aldehyde is insoluble in water due to its hydrophobic structure, and cannot be removed with traditional soaps. Evidently, it leaves behind an unpleasant smell. Manufacturers of an expensive commercial soap made from persimmon extract hypothesized that the high concentration of tannins in persimmons traps the hydrophobic 2-trans-nonenal in their polyphenolic structure. The objective of this study was to synthesize tannin analogs and use natural ingredients which already have high concentrations in tannins to incorporate them into soaps that are suitable for aging skin. For preparation of synthetic analogs of tannins, different esterification reactions were performed. The products were analyzed by IR and NMR spectroscopy which confirmed the formation of the pure products. We further investigated the effects of tannins by formulating soaps with naturally-occurring ingredients, such as fruits and grains, containing high concentrations of tannins. A combinatorial approach was used to prepare a library of 343 different soaps with various oil, solid, and liquid additives. These soaps were then investigated for their conditioning, foaming, and cleansing properties, as well as for the ability to remove 2-trans-nonenal. The tests indicated that our soaps met the industrial quality standards and successfully reduced the smell of nonenal.

This document is currently not available here.

Share

COinS
 
Nov 17th, 8:00 AM Nov 17th, 8:15 AM

The Perfect Bar of Soap for Grandpa: Eliminating The Odor Associated With The Elderly

C335

2-trans-nonenal, the molecule often associated with the smell of the elderly, is produced increasingly in our bodies as we age. This unsaturated aldehyde is insoluble in water due to its hydrophobic structure, and cannot be removed with traditional soaps. Evidently, it leaves behind an unpleasant smell. Manufacturers of an expensive commercial soap made from persimmon extract hypothesized that the high concentration of tannins in persimmons traps the hydrophobic 2-trans-nonenal in their polyphenolic structure. The objective of this study was to synthesize tannin analogs and use natural ingredients which already have high concentrations in tannins to incorporate them into soaps that are suitable for aging skin. For preparation of synthetic analogs of tannins, different esterification reactions were performed. The products were analyzed by IR and NMR spectroscopy which confirmed the formation of the pure products. We further investigated the effects of tannins by formulating soaps with naturally-occurring ingredients, such as fruits and grains, containing high concentrations of tannins. A combinatorial approach was used to prepare a library of 343 different soaps with various oil, solid, and liquid additives. These soaps were then investigated for their conditioning, foaming, and cleansing properties, as well as for the ability to remove 2-trans-nonenal. The tests indicated that our soaps met the industrial quality standards and successfully reduced the smell of nonenal.