Whey and soy proteins as wall materials for spray drying rosemary: Effects on polyphenol composition, antioxidant activity, bioaccessibility after in vitro gastrointestinal digestion and stability during storage

A straightforward protocol was developed to produce rosemary particles using whey and soy protein carriers. The post-processing retention of carnosic acid (CA), carnosol (CR) rosmarinic (RA), their bioaccessibility, in vitro antioxidant activity, storage stability were investigated protein-rosemary compared extract (RME). Solids recovery highest for or whey-inulin blend complexed with (R–WPI, R–WIN, ~90%), followed by soy-inulin (R–SPI, R–SIN, 60% 70%); all higher than alone (RME, 52%). Protein protein/inulin carriers significantly enhanced CR (36.8–50.7 mg/g) CA (17.1–19.6 RME (19.8 mg/g 8.3 mg/g, respectively). In digestibility showed that isolate increased the bioaccessibility CR, no effect on RA, which highly bioaccessible formulations. rosemary-protein-treatments retained high activity measured ROS NO assays. particularly stable during 20 weeks particles, stayed at concentration RME. Water below 0.5 remarkable color observed storage. Overall, spray dried constitute a creative solution deliver preserved phytochemicals high-protein food format.