# What are the optimal conditions for the complete acid hydrolysis (using HCl) of potato starch? [closed]

I'm hoping someone can provide the specifics on the optimal conditions required for the complete acid hydrolysis (using $\ce{HCl}$) of potato starch?

I will be using an autoclave (~$\pu{15 psi}$ @ $\pu{120 degrees Celsius}$) to facilitate hydrolysation.

Specifically I'm after for the following information:

• Concentration of dry starch required for the starch slurry.
• Concentration of $\ce{HCl}$ required to adjust $\pu{pH}$ to required level.
• What is the required $\pu{pH}$ for hydrolysation?
• Time required to complete hydrolysation under above autoclave conditions.

Plus anything else that I may have missed....

Thanks!

## closed as too broad by Mithoron, aventurin, M.A.R. ಠ_ಠ, Todd Minehardt, airhuffMar 29 '18 at 23:57

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• I have suggested some MathJax to make your post look a little prettier. – JavaScriptCoder Mar 29 '18 at 12:59
• If you are able to measure the amount of the starch you hydrolized, why not to make some experiements to find by yourself your process' variables? You can make a little design experiment or just two or three experiments with a fixed volumes of starch and different volumes of HCl and then compare and try to find something optimum. – Hexacoordinate-C Mar 29 '18 at 15:06