An objective of the present invention is to provide a defoaming agent for food having a defoaming effect equal to or higher than that of silicone resin based defoaming agents. A defoaming agent which is an esterification product of (i) diglycerol and (ii) caprylic acid and is characterized by satisfying the following formulae (1) and (2): 0.8 ‰¤ A + B + C / A + B + C + D 0.5 ‰¤ B + C / A ‰¤ 10 when the monoester content in the product is represented by A%, the diester content in the product is represented by B%, the triester content in the product is represented by C%, and the tetraester content in the product is represented by D%.本發明係提供一種等於或大於矽樹脂類消泡劑其消泡效果之食品用消泡劑。本發明係(i)二甘油與(ii)辛酸之酯化生成物，其中將該生成物之單酯體含量設為A%、該生成物之二酯體含量設為B%、該生成物之三酯體含量設為C%、該生成物之四酯體含量設為D%時，係符合下述關係式(1)及(2)。式(1)：0.8≦(A+B+C)/(A+B+C+D)式(2)：0.5≦(B+C)/A≦10
