PERACID AND 2-HYDROXY ORGANIC ACID COMPOSITIONS AND METHODS FOR SANITATION AND DISEASE PREVENTION
Methods and compositions for treating living surfaces to control microorganisms are provided. The method treats produce by contacting a living surface with an aqueous solution comprising i) an organic peracid of the formula RC(O)OOH wherein R is methyl, ethyl, n-propyl, or s-propyl; ii) a 2-hydroxy organic acid selected from tartaric acid, citric acid, malic acid, mandelic acid, and lactic acid; and iii) water.
1 . A method of treating skin or mucosa comprising contacting the surface with an aqueous composition which comprises:
i) an organic peracid of the formula RC(O)OOH wherein R is methyl, ethyl, n-propyl, or s-propyl;
ii) a 2-hydroxy organic acid selected from tartaric acid, citric acid, malic acid, mandelic acid, and lactic acid; and, optionally, a surfactant;
wherein the aqueous composition has a pH from 2.5 to 7.8, inclusive and the concentration of peracid is from 40 to 250 ppm (w/w) inclusive, and the concentration of the 2-hydroxy organic acid is from 0.1 to 1% (w/w), inclusive.
2 . The method of claim 1 , wherein the composition also comprises an anionic surfactant.
3 . The method of claim 1 , wherein the peracid is peroxyacetic acid and the 2-hydroxy organic acid is L-(+)-lactic acid.
4 . The method of claim 3 , wherein the concentration of the peroxyacetic acid in the composition is from 50 to 100 ppm (w/w), the concentration of the lactic acid in the composition is from 0.1% to 0.6% (w/w).
5 . The method of claim 3 , wherein concentration of peroxyacetic acid in the composition is from 60 to 80 ppm (w/w), the concentration of lactic acid in the composition is from 0.1% to 0.4% (w/w).
6 . The method of claim 3 , wherein the pH is between 2.5 and 4.5.
7 . The method of claim 1 , wherein the pH is from 2.8 to 3.2.
8 . The method of claim 1 , wherein the pH is about 3.0.
9 . The method of claim 1 , wherein the composition is at a temperature of 35° F. to 45° F.
10 . The method of claim 1 , wherein the composition is substantially free of nonionic surfactants, cationic surfactants or anionic surfactants
11 . The method of claim 1 , wherein the composition which is a solution, a paste, a gel, a foam, or a suspension.
12 . (canceled)
13 . (canceled)
14 . The method of claim 1 , wherein the contacting is for a period of time is from 10 seconds to 2 minutes.
15 - 17 . (canceled)
18 . The method of claim 1 , wherein the concentration of peroxyacetic acid is 70 to 80 ppm (w/w), and the concentration of the lactic acid is from 0.2 to 0.4% (w/w).
19 . The method of claim 1 , wherein the composition is at temperature selected from room temperature, ambient temperature, or from 35° F. to 85° F.
20 . (canceled)
21 . The method of claim 1 , wherein the composition is substantially free of nonionic surfactants, cationic surfactants and anionic surfactants.
22 . (canceled)
23 . The method of claim 1 , wherein the treatment sanitizes the surface by killing or inhibiting the growth of bacteria on, or attached to, the surface of the skin or mucosa.
24 . (canceled)
25 . The method of claim 1 , wherein the composition further comprises an emollient.
26 . A human personal care product comprising an aqueous composition comprising:
i) an organic peracid of the formula RC(O)OOH wherein R is methyl, ethyl, n-propyl, or s-propyl;
ii) a 2-hydroxy organic acid selected from tartaric acid, citric acid, malic acid, mandelic acid, and lactic acid; and, optionally, a surfactant,
wherein the aqueous composition has a pH from 2.5 to 7.8, inclusive and the concentration of peracid is from 40 to 250 ppm (w/w) inclusive, and the concentration of the 2-hydroxy organic acid is from 0.1 to 1% (w/w), inclusive; and
iii) and an emollient.
27 . The product of claim 26 which is a liquid soap, a hand sanitizes, a cleansing wipe, body wash, acne treatment product, or shampoo.