Food and Fermentation Industries >

2022 , Vol. 48 >Issue 15: 124 - 130

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.029482

Enhancing of lipid accumulation of Umbelopsis isabellina by addition of ammonium and metal ion in the wheat bran hydrolysate

  • FENG Aibo ,
  • ZHOU Hualan ,
  • GULTOM Sarman Oktovianus ,
  • ZHANG Jianguo
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  • 1(Institute of Food Science and Engineering, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
    2(Department of Agricultural and Biosystems Engineering, Papua University Manokwari, Papua Barat, Indonesia)

Received date: 2021-09-29

  Revised date: 2021-11-21

  Online published: 2022-09-02

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Abstract

Umbelopsis (Mortierella) isabellina is an important oleaginous microbial species. Lipid production by U. isabellina using wheat bran hydrolysate benefits the utilization of wheat bran. Based on our previous study, this study investigated the influences of nitrogen sources and metal ions on cell growth and lipid production of U. isabellina, and carbon source utilization. The results showed that the maximum of biomass was obtained at 1.5 g/L nitrogen using ammonium acetate, and 11% increment of oil production at 1.0 g/L nitrogen using ammonium acetate. The addition of Mg2+, Ca2+ and Mn2+ in wheat bran hydrolysate promoted carbon metabolism and lipid synthesis of U. isabellina. The lipid yield reached 13.8, 10.26, 12.91 g/L with 39.8%, 65.80%, 30.8% increment respectively at 0.5 g/L CaCl2, 1.0 g/L MgSO4, 8 μg/L MnSO4 addition. These results provided a base for application of wheat bran in food industry.

Key words： Umbelopsis isabellina (Mortierella isabellina); wheat bran hydrolysate, lipid accumulation; nitrogen source; metal ion

Cite this article

FENG Aibo , ZHOU Hualan , GULTOM Sarman Oktovianus , ZHANG Jianguo . Enhancing of lipid accumulation of Umbelopsis isabellina by addition of ammonium and metal ion in the wheat bran hydrolysate[J]. Food and Fermentation Industries, 2022 , 48(15) : 124 -130 . DOI: 10.13995/j.cnki.11-1802/ts.029482

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