The aim of this study was to evaluate whether IR50404-resistant protein (RP) rice is suitable for brewing. So, the RP was soaked in water pH 6.6 at room temperature for 24 h and germinated for 4 days to get green malt. This malt was dried at 50°C for 24 h to get rice malt (RM). The RM was mashed with an adjusted EBC program before being fermented by yeast at 13°C for 4 days to get rice beer (RB). The results showed that protein in RM showed a statistical difference in inhibitory zone diameter for proteinase K, which is similar to barley malt. Heat- and protease-resistant proteins (HPRPs) in RM were ranged between 14.4 and 55–70 kDa. The HPRPs were detected as an alpha-amylase/trypsin inhibitor (~14.4 kDa) in wort and RB. The beer foam was stable from 5 to 25 min after shacking. Therefore, IR50404 contains HPRPs that contribute to the stability of the foam of the RB.
Tạp chí khoa học Trường Đại học Cần Thơ
Lầu 4, Nhà Điều Hành, Khu II, đường 3/2, P. Xuân Khánh, Q. Ninh Kiều, TP. Cần Thơ
Điện thoại: (0292) 3 872 157; Email: tapchidhct@ctu.edu.vn
Chương trình chạy tốt nhất trên trình duyệt IE 9+ & FF 16+, độ phân giải màn hình 1024x768 trở lên