Extraction and modification of gum from cashew tree exudates using wheat starch and glycerine

Andri Cahyo Kumoro (Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH - Tembalang Semarang, 50275)
Diah Susetyo Retnowati (Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH - Tembalang Semarang, 50275)
Catarina Sri Budiyati (Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH - Tembalang Semarang, 50275)

Jurnal Rekayasa Proses
Vol 4 No 2 (2010): Volume 4, Number 2, 2010

The objectives of this research were to extract cashew tree gum (CTG) from cashew tree exudates and to modify it into a new drying aid, which can act as a substitute for Arabic gum. The cost problem faced in the spray drying of fruit juices is expected to be solved with the use of modified CTG as a replacement of Arabic gum. The CTG was extracted and precipitated from its raw cashew exudates solution with the help of ethanol as antisolvent. Glycerine and wheat starch were the additives used in the modification of the gum. The good quality of modified CTG was obtained based on their close similarity to Arabic gum properties.