Lin S.S.Chiang B.H.Hwang L.S.2019-07-112019-07-11198902608774https://scholars.lib.ntu.edu.tw/handle/123456789/413348Separation of perilla anthocyanins from sodium chloride in spent pickling brine was investigated using diafiltration (DF) and electrodialysis (ED). An ultrafiltration (UF) membrane of nominal molecular weight cut-off of 2000 daltons was used for DF because of its satisfactory permselectivity for separating the pigment and salt. At an added-water volume to original feed ratio of 4, constant-volume diafiltration (CVDF) removed 95% of the salt, and sequential dilution diafiltration (SDDF) removed 87% of the salt from the brine. Both processes recovered more than 90% of the anthocyanins. During ED, increasing current density increased the salt removal rate, but also increased the power consumption and decreased the current efficiency. The ED process could remove 90% of the sodium chloride while recovering 86% of the anthocyanins from the spent brine. ? 1989.journal article10.1016/0260-8774(89)90048-42-s2.0-0024860614https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024860614&doi=10.1016%2f0260-8774%2889%2990048-4&partnerID=40&md5=3b46b9efa5655779ddc5e48a5ad73381