Study on the Factors Affecting the Bioaccessibility of β-Carotene in Emulsions

Abstract:

In order to investigate the parameters affecting the bioaccessibility of β-carotene in emulsion system，in vitro digestion model and three special digestion models（one without starch hydrolases，one without lipase and one without bile salts） were established to investigate the bioaccessibility of β-carotene emulsions stabilized by octenyl succinic anhydride（OSA） modified starches. The results showed that the bioaccessibility of β-carotene in four digestion models reduced in the following order：the complete model > the model without starch hydrolases > the model without bile salts > the model without lipase. It could be concluded that the bioaccessibility of β-carotene would decrease when one of the three processes of starch digestion，lipolysis or micellization of bile salts was inhibited. And the influence degree of these three factors on β-carotene bioaccessibility decreased in the following order：lipolysis > micellization > digestion of emulsifiers.