Trehalosamine
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Trehalosamines are amino sugars in which a hydroxyl group of trehalose is replaced with an amino group. While 2-, 3-, and 4-trehalosamine derived from actinomycetes have been reported as natural compounds,[1][2][3] 6-trehalosamine has been reported as a synthetic compound.[4] They have weak antimicrobial activity[1][2][3][5] and could be considered as a class of aminoglycoside antibiotics. The properties and functions of 4-trehalosamine have been well investigated as follows.[6]
As "a trehalose possessing an amino group", trehalosamine shares many properties and characteristics in common with trehalose; in addition, unique functions due to the presence of an amino group are also suggested. Trehalose is used as a protective agent for starch, protein, cells, or tissues due to its non-reducing sugar moiety having lower non-specific reactivity than reducing sugars and high moisturizing and protective activities.[7] In many cases, 4-trehalosamine exhibits these protective activities either comparable to or marginally higher than those of trehalose. In addition, 4-trehalosamine exhibits a strong pH buffering activity near neutrality, while trehalose does not have such ability. Therefore, it is expected to be added to foods and industrial products as a trehalose-type moisturizing and protective agent with pH buffering ability.[6]



