[Study on Extraction Conditions of Water-Soluble Substances—Purity Test (4) for Polyvinylpolypyrrolidone Listed in Japan's Specifications and Standards for Food Additives].
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.
Tama Laboratory, Japan Food Research Laboratories.
Tokue
T
Yanagi
Makoto
M
Matsumoto
Sachiko
S
Shimizu
Tetsuro
T
Iwamura
Mamiko
M
Ogaki
D005503:Food Additives / Q000302:isolation & purification* / Q000592:standards; D005504:Food Analysis / Q000379:methods*; D007564:Japan; D011205:Povidone / Q000302:isolation & purification*; D015203:Reproducibility of Results; D012995:Solubility; D014867:Water
D005503:Food Additives; D014867:Water; D011205:Povidone