Abstract
To measure protein coagulation process in soybean curd making, studied light side scatter and transmission responses, and designed a detecting system which was used to test by optic fiber. It was made up of LED light source, optic fiber, sample cell, light density measurement circuit and appropriate computer system. Firstly, used optic fiber to collect the weak reflection light density, and amplified the weak light density signal by circuit, then processed and analyzed it by computer. The experiment shows that the optical correlation of protein coagulation could be developed and obtain stable and reliable repeatability test results.
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