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POSTER PRESENTATION

New Technology for Alum Treatment (Sarn-Som Satu) by Micro-

wave

Jiranan Plubprasit*, Raywatchai Plubprasit**

*Independent Researcher
**Independent Researcher

Background and Rational: Treated alum (anhydrous alum or sarn-som satu in Thai) is
generally used as one of the ingredients in Thai Traditional recipes. It can be treated by heat
applying to ceramic pot containing grinded alum crystalline on charcoal stove until it is dried
and easily broken. Modern technology such as microwave can be applied to this purpose for
facilitating, time saving and energy saving.
Objectives: The new technology çmicrowaveé can be applied to Thai Traditional Medi-
cine instead of the conventional method.
Methods: Alum crystalline is grinded and put into beaker or ceramic pot; therefore, it is
able to apply microwave to break their hydrate bonds and to evaporate all of dissociated water
out of alum in microwave oven.
Results: 1. Very good form of treated alum can be obtained and ready to use as an
ingredient in Thai Traditional Medicine Recipes.
2. Microwave can break hydrate bond of alum crystalline and generate heat for
dissociated water evaporation.
3. The experimental calculation confirms KAl(SO ) .12H O(potash alum) is the
4 2 2
molecular formula of the alum crystalline material used in these trials because there are other
alums such as soda alum(NaAl(SO ) .12H O), ammonium alum(NH Al(SO4) .12H O) and chrome
4 2 2 4 2 2
alum(KCr(SO ) .12H O)
4 2 2
Conclusions: Microwave; which is new source of energy, can be utilized instead of
direct heat to prepare very good treated alum (anhydrous alum or sarn-som satu in Thai), in
addition it is very convenient, time saving and energy saving. This modern technology can be
applied to promote Thai Traditional Medicine go along with the modern world.
Key words: Treated alum, potash alum, sarn-som satu, microwave, recipes