β-Carotene production by Dunaliella salina using glass powder containing nutrients : Note— Yukiho Yamaoka1∗, Osamu Takimura1, Hiroyuki Fuse1, Kazuo Kamimura1, Katsuji Murakami1, Sadao Ueda2, and Masamichi Saiki3 (Chugoku National Industrial Research Institute, 2-2-2 Hirosuehiro, Kure, Hiroshima 737-011; Toyo Glass Co. Ltd., 3-2-3 Yakou, Kawasaki 2102; Tetora Co. Ltd., 2-7-1 Nishishinjuku, Tokyo 163-073) Seibutsu-kogaku 74: 269–272. 1996