Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Chihuahua, Mexico.
Instituto de Ciencia Animal (ICA), San José de las Lajas, Cuba.
Braz J Microbiol. 2019 Apr;50(2):533-537. doi: 10.1007/s42770-018-0015-4. Epub 2018 Nov 29.
To examine the growth of Candida norvegensis (strain Levazoot 15), four experiments were conducted with different sources of energy, nitrogen, vitamins, and microminerals. Optical density was used as an indirect measure of strain growth in a fully randomized factorial design, in which principal factor A was the source of energy, nitrogen, vitamins, or microminerals and principal factor B was the measurement time point (0, 20, or 40 h). The results showed that the yeast strain used glucose (primarily sucrose and lactose) as the energy source and tryptone as the nitrogen source. The addition of B-complex vitamins or microminerals was not necessary for strain growth. It is concluded that the strain Levazoot 15 preferentially utilizes glucose as a source of energy, tryptone as a source of nitrogen and manganese as a mineral source, and that no vitamin source was necessary for growth.
为了研究挪威假丝酵母（Levazoot 15 株）的生长情况，进行了四项实验，分别采用不同的能源、氮源、维生素和微量元素来源。在完全随机析因设计中，采用光密度作为菌株生长的间接测量指标，其中主因子 A 是能源、氮源、维生素或微量元素的来源，主因子 B 是测量时间点（0、20 或 40 h）。结果表明，该酵母菌株使用葡萄糖（主要是蔗糖和乳糖）作为能源，使用胰蛋白胨作为氮源。添加 B 族复合维生素或微量元素对菌株生长不是必需的。结论是，Levazoot 15 株优先利用葡萄糖作为能源，利用胰蛋白胨作为氮源，利用锰作为矿物质来源，生长不需要维生素来源。
