Investigation of whey protein concentration by ultrafiltration elements designed for water treatment

Investigation of whey protein concentration by ultrafiltration elements designed for water treatment

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Suitability of polysulfone ultrafiltration membranes (UFM) commercial designed for water treatment have been investigated for separation of protein (PR) from sweet whey.Ultrafiltration here (UF) of whey originated from dairy has been realized by self-made pilot plant which has been in service about one year.Influence of two whey temperatures (9 oC and 30 oC) on efficiency of protein concentration has been examined.Application of investigated UF elements has given whey protein concentrate (WPC) with 5 to 6 times excess amount of protein content in regard to starting one.In the same time the prevalent content turbosound ts-18sw700/8a of lactose has been removed to permeate.

Better results have been occurred during the cold whey filtration.Besides the fact that molecular weight cut-off (MWCO) of investigated membranes were 50-100 kDa, results showed very successful concentrating of whey proteins of dominantly lower molar weights than 50-100 kDa.Investigated membranes are beneficial for design and construction of UF plants for exploitation in small dairies.