Effect Of Sweet Mayonnaise Intake On ?-carotene Absorption

With the rapid development of Chinese economy,the Chinese people's eating habits are undergoing significant changes,quick and easy way of eating more and more recognized by urban consumers.Mayonnaise as a foreign food,its high nutritional value,and cooking process easy and convenient with fruit and vegetable,loved by the Chinese people,but the investigations found that because of cultural differences in diet,different countries who prefer Mayonnaise tastes are not the same.Especially investigation found that Japanese consumers prefer to original flavor mayonnaise,while Chinese consumers more preference for sweet Mayonnaise.Different flavors of mayonnaise mainly are processed by the eggs,soybean oil,vinegar,together with all kinds of seasonings.This study is to determine the effect of mayonnaise intake on ?-carotene absorption by animal experiments and vitro experiment.The main results are as follows:1.Respectively original flavor mayonnaise,sweet mayonnaise and soybean oil as a continuous feed fed three groups of rats two weeks to confirm ?-carotene accumulation in rat liver conditions.We found ?-carotene concentration in rat liver:Original flavor mayonnaise >Soybean oil,Sweet Mayonnaise>Soybean Oil(P<0.05),Original group and sweet mayonnaise group is roughly equal(P<0.05),?-carotene in mayonnaise group transform and absorbing better than soybean oil group in rat liver.2.By simulating gastric motility to evaluate the different effect of mayonnaise intake and pure soybean oil intake on ?-carotene absorption promoting.Found: With stirring time increases,?-carotene in mango broccoli and carrots dissolved in the artificial gastric concentration of the oil phase also increases.?-carotene concentration in the oil phase in the two systems of mayonnaise and sweet mayonnaise are higher than the soybean oil group;but ?-carotene in the broccoli and carrot was wrapped by hard cell wall,grinding process is difficult destroy the cell walls of broccoli and carrot tissue,resulting in dissolution of ?-carotene is difficult,so in broccoli experiment and carrots experiment ?-carotene concentration in each system are less than mango group;3.To evaluate the mayonnaise in the stomach time to stay and explain the reasons for mayonnaise can promote the ?-carotene absorption by orally administration experiments.After administration 30 min,?-carotene concentration in the oil phase of:gastric juice: sweet mayonnaise group(3308.30 ng / ml)> soybean oil group(301.49ng/ ml),P <0.05.And after administration 60 min,soybean oil has no residual in rat gastric;sweet mayonnaise stays in the stomach longer than soybean oil,more prolonged contact with the fat-soluble vitamins,more able to promote the absorption of fat-soluble vitamins.