§ 173.40 Molecular sieve resins.
Molecular sieve resins may be safely used in the processing of food under the following prescribed conditions:
?。╝） The molecular sieve resins consist of purified dextran having an average molecular weight of 40,000, cross-linked with epichlorohydrin in a ratio of 1 part of dextran to 10 parts of epichlorohydrin, to give a stable three dimensional structure. The resins have a pore size of 2.0 to 3.0 milliliters per gram of dry resin （expressed in terms of water regain）, and a particle size of 10 to 300 microns.
?。╞） The molecular sieve resins are thoroughly washed with potable water prior to their first use in contact with food.
?。╟） Molecular sieve resins are used as the gel filtration media in the final purification of partially delactosed whey. The gel bed shall be maintained in a sanitary manner in accordance with good manufacturing practice so as to prevent microbial build-up on the bed and adulteration of the product.
更多關(guān)于美國 FDA 可直接加入食品中的輔助性食品添加劑的種類法規(guī)，請點(diǎn)擊美國FDA 21 CFR 第173部分可直接加入食品中的輔助性食品添加劑種類匯總
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編輯：foodfagui