Absorption of zinc from lupin (Lupinus angustifolius)-based foods.
The absorption of Zn from a lupin (Lupinus angustifolius) milk fortified with Ca, a bread containing lupin flour (230 g/kg), a sauce containing lupin flour and a sauce containing a lupin-protein isolate was determined in humans by measuring the whole-body retention of radioisotope from meals labelled with 0.02 MBq 65Zn, allowing for endogenous excretion of Zn, after 14 d. The absorption of Zn from the Ca-enriched milk (16.2%) and the bread made with lupin flour (27.0%) was similar to literature figures for comparable soya-bean products. The absorption from composite meals made with lupin flour (28.2%) and protein isolate (32.7%) was significantly higher than that reported for comparable soya-bean products. In a second experiment the absorption of Zn from a lupin-milk base and a soya-bean-milk base was compared with that from Ca-supplemented bases. The absorption of Zn from the lupin-milk base (26.3%) was significantly higher than from the soya-bean-milk base (17.6%), and neither was significantly altered by the addition of Ca. Overall the absorption of Zn from lupin-protein foods was found to be higher than from comparable soya-bean products. Lupin milk could be an attractive alternative to soya-bean milk for infant formulas.
Petterson
D S
DS
Research Department of Human Nutrition, Royal Veterinary and Agricultural University, Copenhagen, Denmark.
Sandström
B
B
Cederblad
A
A
D000328:Adult; D000818:Animals; D001682:Biological Availability; D007887:Fabaceae / Q000378:metabolism*; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008892:Milk; D010940:Plant Proteins / Q000378:metabolism; D010946:Plants, Medicinal; D012639:Seeds; D015032:Zinc / Q000378:metabolism*; D015037:Zinc Radioisotopes
D010940:Plant Proteins; D015037:Zinc Radioisotopes; D015032:Zinc