I am confusing to decide a solvent to extract pectin from soybean byproduct of tempeh, what journal I read, 2-propanol is most used in pectin extraction from soybean hull but it is hard to find 2-propanol in my area. Otherwise from many kind of pectin sources like fruits use ethanol 96% to extract pectin. Can I used ethanol 96% instead? has it any differences?
Pectin is insoluble in propanol or ethanol, neither will extract pectin from plant materila.
you can try to use water-based extraction of pectin. and add some chelating agent to ensure high yield of pectin. and to minimise the extraction time, you can use microwave extraction method.
Alcohol is used only in the last stage to precipitate pectin from the already purified and concentrated water-based extract, which is typically done at a low pH. Propanol is usually used because it is cheaper than ethanol.
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