Growth kinetics of Rhodotorula rubra on different substrates

✍ Scribed by Ravinder P. K. Hari; Thakor Patel; Antonio M. Martin

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 602 KB
• Volume: 33
• Category: Article
• ISSN: 0233-111X
• DOI: 10.1002/jobm.3620330603

✦ Synopsis

The growth of a red-pigmented yeast, isolated from yogurt and identified as Rhodotorulu rubra, was studied on various industrial and agricultural by-products. Peat hydrolysate when supplemented with peptone and yeast extract supported a satisfactory growth of the yeast. Ammonium hydroxide and ammonium sulfate were the best inorganic nitrogen sources. A yield of 11.8 g/1 was obtained on molasses and wort used in aconcentration of 10 and 40% (v/v), respectively. Molasses were pre-treated to be effective. The best yield of 14 g/l, however, was obtained on a richer medium composed of molasses, peptone and yeast extract. The pH profiles were also studied and growth was found within a broad pH zone of 3 -10.