The ethanol could be acidified with any non-poisonous acid. Chosen acids are hydrochloric acid, phosphoric acid, and natural acids like tartaric acid and citric acid. Hydrochloric acid causes an extract using a desirable characteristic crimson colour. Detailed opinions relating to these programs have already been done by Okiyama et al. https://cocoa-shell82578.shoutmyblog.com/32880446/the-ultimate-guide-to-cocoa-shell