Okara is a soy bean pulp that occurs as a by-product during the production of soy milk and tofu. Most okara worldwide is used as animal feed and the rest mainly as a natural fertilizer or compost. However it also has potential for human consumption, in that it adds texture to baked goods and is a nutritional protein enhancer.
This is increasingly seen as a valued opportunity for food manufacturers to make valuable use of a waste by-product, but only if the processing challenges of producing low moisture, fine particle sized, protein preserved powders can be addressed.
These challenges include the ability to produce a low moisture product that will be subject to less risk from deterioration yet remain unaltered in colour, taste or mouthfeel by any drying or grinding processes. On the market today are machines capable of meeting these challenges. These can grind, classify and dry to produce a stable product, eliminating several stages of powder handling typical in more traditional processing systems.