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. 2023 Jun 3;39(8):216.
doi: 10.1007/s11274-023-03659-4.

Characterization of mating type on aroma production and metabolic properties wild Kluyveromyces marxianus yeasts

P J Adame-Soto  1 , E T Aréchiga-Carvajal  2 , S M González-Herrera  1 , M R Moreno-Jiménez  1 , O M Rutiaga-Quiñones  3
Affiliations

Characterization of mating type on aroma production and metabolic properties wild Kluyveromyces marxianus yeasts

P J Adame-Soto et al. World J Microbiol Biotechnol. .

Abstract

Kluyveromyces marxianus yeasts represent a valuable industry alternative due to their biotechnological potential to produce aromatic compounds. 2-phenylethanol and 2-phenylethylacetate are significant aromatic compounds widely used in food and cosmetics due to their pleasant odor. Natural obtention of these compounds increases their value, and because of this, bioprocesses such as de novo synthesis has become of great significance. However, the relationship between aromatic compound production and yeast's genetic diversity has yet to be studied. In the present study, the analysis of the genetic diversity in K. marxianus isolated from the natural fermentation of Agave duranguensis for Mezcal elaboration is presented. The results of strains in a haploid and diploid state added to the direct relationship between the mating type locus MAT with metabolic characteristics are studied. Growth rate, assimilate carbohydrates (glucose, lactose, and chicory inulin), and the production of aromatic compounds such as ethyl acetate, isoamyl acetate, isoamyl alcohol, 2-phenylethyl butyrate and phenylethyl propionate and the diversity in terms of the output of 2-phenylethanol and 2-phenylethylacetate by de novo synthesis were determinate, obtaining maximum concentrations of 51.30 and 60.39 mg/L by ITD0049 and ITD 0136 yeasts respectively.

Keywords: Agave duranguensis; Aromas; D1/D2 domain; Metabolic diversity; de novo synthesis.

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References

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