Study on Extraction Conditions of Water-Soluble Substances —Purity Test (4) for Polyvinylpolypyrrolidone Listed in Japan's Specifications and Standards for Food Additives—
第8版食品添加物公定書各条「ポリビニルポリピロリドン」純度試験 (4) 水可溶物の抽出条件の検討

Tokue YANAGI, Makoto MATSUMOTO, Sachiko SHIMIZU, Tetsuro IWAMURA, Mamiko OGAKI
2015 Shokuhin Eiseigaku Zasshi  
The food additive polyvinylpolypyrrolidone is approved for use as a filter aid. The water-soluble substances test of polyvinylpolypyrrolidone often shows poor reproducibility. The instruction "boil gently while stirring using a stirrer" was considered critical, and so this issue was examined. The results showed that the use of a combination of both an oil bath and a stirrer provided good reproducibility without decomposition or other problems.
doi:10.3358/shokueishi.56.37 pmid:25925074 fatcat:nhgwlrb7mvf7jfdsftxbbarhcy