Step 2: learn the appropriate concentration of the acid out of Kuta in the inhibition of b. Brown on a coconut shell, perfume. Compare with distilled water, which is a set of controls found that concentrations of 0.5% changes the brightness values (L *) as high as possible, but it is still less than the control, while the concentrations 3 and 5% with no significant differences in the statistical. For changing the overall color values ( E value) (Figure 3A and 3B), the last stage of the preservation of chilled coconut results with aqueous solution. Oxalic acid 0.5% is able to inhibit the occurrence of Brown. While the concentrations 3 and 5% efficient, does not differ in a statistical significant (Figure 3B).
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