Single factor experiment and orthogonal factor experiment were carried out to study the method of alkali extraction and acid precipitation,which was used to extract the kiwifruit seed protein from degreased kiwifruit seed drag.

Oat bran protein concentrate was prepared through alkali extraction and acid precipitation.

Oat bran protein concentrate was prepared by alkali extraction and acid precipitation.

In this paper alkali extraction and acid precipitation of rutin from bud of Sophora japonica L was studied.

Peanut protein isolate was prepared from defatted peanut powder through alkali extraction and acid precipitation.

This text analyses hazards in the alkali dissolving and acid precipitating processing of soybean protein isolate, From the raw material soybean to the end product, dividing three stages,the raw material,the processing,the storage and transport,it emphatically introduces three kind of harms,and analyses factors.

And an optimum extraction process of sesame cake protein by alkaline extraction and acid precipitation was made through response surface method to evaluate the experiment.