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| Antioxidant activity and digestibility in vitro of glycerolized lard microemulsion loaded with dihydroquercetin |
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| KeyWord:dihydroquercetin glycerolized lard microemulsion antioxidant activity bioavailability |
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| Abstract: |
| In order to solve the problem of the food containing glycerolized lard easy to be oxidized, dihydroquercetin was added to glycerolized lard to prepare glycerolized lard microemulsion.The in vitro model was used to determine the reducing power of the microemulsions and scavenging ability on DPPH, ABTS and hydroxyl radicals so as to investigate the in vitro antioxidant properties of the glycerolized lard microemulsions, the digestibility of the microemulsions was also determined by simulating gastrointestinal digestion in vitro. The results showed that the microemulsions had certain reducing power and scavenging ability on DPPH, ABTS and hydroxyl radicals, and the reducing power and scavenging ability of free radicals increased with the increase of dihydroquercetin loading amount, and the correlation was significant.In vitro digestion study revealed that the retention rate of dihydroquercetin was 79.25% after 2 h of gastric digestion, which indicated that the microemulsion could effectively protect dihydroquercetin against gastric digestion, and targetedly delivered to the small intestine. After 2 h of intestinal digestion, the free fatty acid release rate of microemulsion was 73.85% and the bioavailability of dihydroquercetin reached 33.3%. Therefore, glycerolized lard microemulsion loaded with dihydroquercetin could have huge application potential in food industry. |
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