The aim of this study was to evaluate the potential application of cell-surface-displayed β-glucosidase (BGL) in wine aroma enhancement. Gene cassettes for the surface display of Aspergillus niger BGL were constructed using different promoters ( GPD and SED1) and glycosylphosphatidylinositol (GPI) anchoring regions (Sag1, Sed1, and Cwp2). The differences in surface-display cassettes, the tolerance of the displayed BGL to typical winemaking conditions, and the hydrolysis capacity for the liberation of grape aroma glycosides were analyzed. Results revealed that simultaneous utilization of GPD promoter and Sed1 anchoring domain achieved the highest BGL activity. The displayed BGL exhibited relatively high activity at pH 3.0 and at glucose concentration below 2.5% (w/v), compared to commercial enzyme (AR 2000), but exhibited no significant difference under varying ethanol concentrations. Furthermore, the surface-displayed BGL presented better ability to release free terpenols compared to AR 2000. Therefore, a surface-display system could provide a new viable solution for enhancing wine aroma.
Efficient Display of Aspergillus niger β-Glucosidase on Saccharomyces cerevisiae Cell Wall for Aroma Enhancement in Wine.
Yang Zhang,Z. Min,Yi Qin,D. Ye,Yuyang Song,Yan-Lin Liu
Published 2019 in Journal of Agricultural and Food Chemistry
ABSTRACT
PUBLICATION RECORD
- Publication year
2019
- Venue
Journal of Agricultural and Food Chemistry
- Publication date
2019-04-18
- Fields of study
Medicine, Chemistry, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- ar 2000
A commercial β-glucosidase preparation used as the comparison enzyme in the activity and aroma-release tests.
- cell-surface-displayed β-glucosidase
A β-glucosidase enzyme engineered to be displayed on the Saccharomyces cerevisiae cell surface.
Aliases: surface-displayed BGL, displayed BGL
- free terpenols
Volatile terpenoid alcohols released from bound precursors during hydrolysis and measured as aroma compounds.
Aliases: terpenols
- gpd promoter
A constitutive yeast promoter used to drive expression of the β-glucosidase display cassette.
Aliases: TDH3 promoter
- grape aroma glycosides
Glycosylated aroma precursors from grapes that can be hydrolyzed to release volatile aroma compounds.
Aliases: aroma glycosides
- sed1 anchoring domain
A cell-wall anchoring region from Sed1 used to attach the enzyme display construct to the yeast surface.
Aliases: Sed1 anchor
- wine aroma enhancement
The application goal of increasing desirable aroma release in wine by enzymatic hydrolysis of glycosides.
Aliases: aroma enhancement
REFERENCES
Showing 1-41 of 41 references · Page 1 of 1
CITED BY
Showing 1-27 of 27 citing papers · Page 1 of 1