Soybean waste is by product in production of tofu and soymilk. Soybean waste commonly dumps directly to the water sewer and made environmental problems like eutrotification. Soybean waste contains 23% hemicellulose, 16% cellulose dan 28% protein. Xylan rich hemicellulose is potential source of xylooligosacharides (XOS). XOS was known as functional food with prebiotic activities. In this researc…