ALKALINE DETERGENTS AND METHODS OF CLEANING SHELL EGGS
Alkaline detergent compositions and methods of using the same for washing of shell eggs are provided that exhibit rapid drying characteristics. The detergent compositions comprise an alkyl polyglucoside surfactant, an alkaline agent, sodium silicate, and water.
1 . A detergent composition comprising:
from about 0.075% to about 1% by weight of an alkyl polyglucoside surfactant;
from about 5% to about 50% by weight of an alkaline agent;
from about 0.15% to about 5% by weight of an alkali metal silicate; and
from about 40% to about 80% by weight of water.
2 . The detergent composition of claim 1 , wherein the alkyl polyglucoside surfactant comprises a C6-C16 alkyl polyglucoside surfactant.
3 . The detergent composition of claim 2 , wherein the alkyl polyglucoside surfactant comprises a C6 alkyl polyglucoside surfactant.
4 . The detergent composition of claim 1 , wherein the alkaline agent comprises NaOH and/or KOH.
5 . The detergent composition of claim 1 , wherein the composition further comprises from about 0.1% to about 2.5% by weight of a water softener.
6 . The detergent composition of claim 5 , wherein the water softener comprises a phosphonate compound.
7 . The detergent composition of claim 1 , wherein the composition comprises from about 1% to about 5% by weight of a chelating agent.
8 . The detergent composition of claim 7 , wherein the chelating agent comprises an alkaline stable chelating agent selected from the group consisting of gluconic acid, sodium gluconate, diethylenetriaminepentaacetic acid, ethylene-diaminetetraacetic acid, nitrilotriacetic acid (NTA), and tripolyphosphate (TPP) sodium salts.
9 . The detergent composition of claim 1 , wherein the detergent composition comprises:
from about 0.15% to about 0.5% by weight of the alkyl polyglucoside surfactant,
wherein the alkyl polyglucoside surfactant is a C6 alkyl polyglucoside surfactant;
from about 25% to about 35% by weight of the alkaline agent, wherein the alkaline agent is NaOH and/or KOH;
from about 0.5% to about 1.2% by weight of the alkali metal silicate; and
from about 55% to about 65% by weight of water.
10 . A wash solution comprising 1 part by volume of the detergent composition according to claim 1 and from 50 to 300 parts by volume water.
11 . The wash solution of claim 1 , wherein the wash solution has a pH from about 10.5 to about 13.
12 . A method of cleaning shell eggs comprising:
wetting the shells of the eggs;
applying a wash solution according to claim 10 to the shells of the eggs;
rinsing the shells of the eggs to remove the wash solution; and
drying the shells of the eggs.
13 . The method of claim 12 , wherein the step of wetting the shells of the eggs comprises applying to the shells water having a temperature from about 90° F. to about 120° F.
14 . The method of claim 13 , wherein the water is applied to the shells by spraying.
15 . The method of claim 13 , wherein the wetting step is carried out for a period of less than 10 seconds.
16 . The method of claim 12 , wherein the wash solution has a temperature from about 90° F. to about 120° F.
17 . The method of claim 16 , wherein the wash solution is applied to the shells of the eggs for a period from about 10 seconds to about 60 seconds.
18 . The method of claim 12 , wherein the step of rinsing the shells of the eggs comprises applying water having a temperature from about 90° F. to about 120° F. to the shells.
19 . The method of claim 18 , wherein the step of rinsing the shells of the eggs is carried out for a period of less than 30 seconds.
20 . The method of claim 12 , wherein the step of drying the shells of the eggs comprises forced-air drying of the eggs.
21 . The method of claim 20 , wherein the step of drying the shells of the eggs is carried out for a period of less than 15 seconds.
22 . The method of claim 21 , wherein at least 90% of the eggs are completely dried within the drying step period.