Kartezs, 1951; Levigne et al., 2002, said the extraction of pectin can be accomplished by hydrolysis with acid or alkaline. But the extraction of pectin often is extracted using sulfuric acid. And acids commonly used in the industry to extract pectin is hydrochloric acid, such as Nana's presence and baby Smach (2012) Halo Sweet (2534) and Thanawan pleasures (2557).
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