Formation and Alterations of the Potentially Harmful Maillard Reaction Products during the Production and Storage of Brown Fermented Milk
2019
Zhonghui Han | Jianxin Gao | Xiaomin Wang | Wenxiang Wang | Jing Dong | Yan Zhang | Shuo Wang
To improve the quality and safety of brown fermented milk (BFM), the formation and alterations of potentially harmful Maillard reaction products (MRPs), including 3-deoxyglucosone (3-DG), methylglyoxal (MGO), 5-(hydroxymethyl)-2-furfural (HMF), acrylamide and flavour components were investigated during the browning, fermentation and commercial storage. MRPs were shown to be produced mainly during the browning stage. The levels of different substances varied during the fermentation and commercial storage stage. The proportion and type of carboxylic acids in the flavour components significantly increased during the fermentation stage. Browning index of milk during the browning stage was shown to be positively associated with the 3-DG (Pearson&rsquo:s r = 0.9632), MGO (Pearson&rsquo:s r = 0.9915), HMF (Pearson&rsquo:s r = 0.9772), and acrylamide (Pearson&rsquo:s r = 0.7910) levels and the total percentage of the flavour components from four different categories (Pearson&rsquo:s r = 0.7407). Changes in physicochemical properties of BFM during production not only contribute to predict the formation of potentially unhealthy MRPs, but also Lactobacillus species used for the fermentation should be carefully selected to improve the quality of this product.
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