The plastic bottled milk coffee of “Rich2” that contained Colombian EX (LV 26) was prepared by UHT sterilization. Sucrose palmitic acid ester (RYOTO™ Sugar Ester P-1670; HLB 16 (Mitsubishi-Kagaku Foods Corp., Japan)), diglycerol palmitic acid ester (POEM™ DP-95RF; HLB 8 (Riken Vitamin Co., Ltd., Japan)), and decaglycerol stearic acid ester (RYOTO™ polyglycerol Ester S-10D, HLB 14 (Mitsubishi-Kagaku Foods Corp., Japan)) were used as emulsifiers. The structures of these emulsifiers are depicted in Fig. 1.