摘要：Application of natural dye powder from seeds of Areca catechu L.in transparent soap was studied.The objective of this study was to determine the effect of areca seeds extracted powder and the type of vegetable oil to the characteristics of transparent soap.Areca seed extracted powder being used in this study were areca extracted seed powder without a binder and areca seed extracted powder with a binder (arabic gum 2% w/w).Two types of vegetable oil for making transparent soap were used in this study namely coconut oil and mixed of coconut oil and palm oil (15:5 w/w).As a control,there were transparent soaps made without addition of areca seeds powder.Transparent soap from all combinations of treatment had colour range yellow red.Mixed of coconut oil and palm oil (15:5 w/w) gave higher foam stability and lower hardness than coconut oil but did not give significant effect on moisture content and pH value.Type of areca seeds extracted powder had no significant difference in moisture content,hardness and pH value but had significant effect on foam stability of transparent soap.The presence of arabic gum in areca seeds extracted powder enhanced foam stability of transparent soap from coconut oil and reduced color change in transparent soap after six months of storage.
其他摘要：Pewarna alami merupakan alternatif pewarna yang tidak toksik,dapat diperbaharui (renewable),mudah terdegradasi dan ramah lingkungan.Penelitian ini memanfaatkan biji pinang (Areca catechu L.) sebagai pewarna alami.Biji pinang diekstrak kemudian dikeringkan
