Effect of calcium-binding compounds in acid whey on calcium removal during electrodialysis
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Effect of calcium-binding compounds in acid whey on calcium removal during electrodialysis. / Nielsen, Emilie N.; Skibsted, Leif H.; Yazdi, Saeed R.; Merkel, Arthur; Ahrné, Lilia M.
I: Food and Bioproducts Processing, Bind 131, 2022, s. 224-234.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Effect of calcium-binding compounds in acid whey on calcium removal during electrodialysis
AU - Nielsen, Emilie N.
AU - Skibsted, Leif H.
AU - Yazdi, Saeed R.
AU - Merkel, Arthur
AU - Ahrné, Lilia M.
N1 - Funding Information: This study is a part of the Platform for Novel Gentle Processing supported by the Dairy Rationalisation Fund (DDRF) , Copenhagen University and Arla Foods . The work performed by MemBrain s.r.o. (Membrane Innovation Centre) was performed within the Institutional support project (Decision No. 6/2018) by the Ministry of Industry and Trade of the Czech Republic . Publisher Copyright: © 2021 The Author(s)
PY - 2022
Y1 - 2022
N2 - Electrodialysis (ED) is an efficient technology to recover calcium from acid whey (AW). The effects of calcium-binding compounds on demineralization and calcium recovery were studied during the ED process, using model solutions imitating AW. The presence of calcium-binding compounds with a higher association constant significantly decreases the extent of the removal of calcium. Lactate, present in high concentrations in AW, has a larger impact than citrate, on removing calcium during ED, although citrate has a higher affinity for calcium-binding. The largest impact of pH was observed for citrate, and at pH of AW, less calcium is bound. Sugars were found to have minor effects, but an additive effect is observed when several calcium-binding compounds are present. Measurement of bound and ionic calcium showed that calcium dissociates during ED reestablishing chemical equilibria except for citrate, which at pH of AW forms the uncharged complex CaHCitr not being transported during ED.
AB - Electrodialysis (ED) is an efficient technology to recover calcium from acid whey (AW). The effects of calcium-binding compounds on demineralization and calcium recovery were studied during the ED process, using model solutions imitating AW. The presence of calcium-binding compounds with a higher association constant significantly decreases the extent of the removal of calcium. Lactate, present in high concentrations in AW, has a larger impact than citrate, on removing calcium during ED, although citrate has a higher affinity for calcium-binding. The largest impact of pH was observed for citrate, and at pH of AW, less calcium is bound. Sugars were found to have minor effects, but an additive effect is observed when several calcium-binding compounds are present. Measurement of bound and ionic calcium showed that calcium dissociates during ED reestablishing chemical equilibria except for citrate, which at pH of AW forms the uncharged complex CaHCitr not being transported during ED.
KW - Acid whey
KW - Calcium
KW - Calcium-binding
KW - Citrate
KW - Electrodialysis
KW - Gluconate
KW - Lactate
KW - Sugars
U2 - 10.1016/j.fbp.2021.11.008
DO - 10.1016/j.fbp.2021.11.008
M3 - Journal article
AN - SCOPUS:85121211581
VL - 131
SP - 224
EP - 234
JO - Food and Bioproducts Processing
JF - Food and Bioproducts Processing
SN - 0960-3085
ER -
ID: 288784258