Back to Search
Start Over
Use of FT‐NIR and XPS techniques to distinguish cell hull fractions prepared by autolysis or HPH from Saccharomyces cerevisiae and Brettanomyces bruxellensis strains
- Source :
- International Journal of Food Science and Technology, International Journal of Food Science and Technology, Wiley, 2021, pp.1-9. ⟨10.1111/ijfs.15318⟩
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- International audience; Yeast hulls can be used to adsorb undesirable compounds such as volatile phenols that may be present in wine. To understand this adsorption process, the properties of the cell walls and their chemical composition need to be better understood. A study was conducted using four different yeast fractions of either autolysed or high-pressure homogeniser (HPH)-crushed yeast biomasses of Saccharomyces cerevisiae and Brettanomyces bruxellensis. Near-infrared spectroscopy (FT-NIR) coupled with X-ray photoelectron spectroscopy (XPS) was used and analysed by principal component analysis (PCA). The FT-NIR spectral region of Saccharomyces and Brettanomyces statistically analysed by PCA showed a clear discrimination accounting for 76% of the variation in the data for PC1; moreover, yeast hulls prepared from the same strain and subjected to two different treatments were also separated. These methods classify yeast cell hulls (YCH) according to strain, composition and treatment applied. Our results indicate that yeast hulls obtained by autolysis are less rich in proteins than those resulting from HPH treatment due to the high pressure that releases more proteins and exposes them on the surface of the cell wall. The composition of YCH at the extreme surface is similar to that found deeper in the wall.
- Subjects :
- Autolysis (biology)
Surface analysis
Brettanomyces
Matériaux
Saccharomyces cerevisiae
Brettanomyces bruxellensis
01 natural sciences
Saccharomyces
Industrial and Manufacturing Engineering
[SPI.MAT]Engineering Sciences [physics]/Materials
Cell wall
Beverages
[CHIM.GENI]Chemical Sciences/Chemical engineering
0404 agricultural biotechnology
XPS
Génie chimique
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Food science
Génie des procédés
High pressure homogeniser
Mannoproteins
Wine
biology
Chemistry
010401 analytical chemistry
04 agricultural and veterinary sciences
biology.organism_classification
040401 food science
Yeast
0104 chemical sciences
Multivariate analysis
Yeast hulls
Food Science
Subjects
Details
- Language :
- English
- ISSN :
- 09505423 and 13652621
- Database :
- OpenAIRE
- Journal :
- International Journal of Food Science and Technology, International Journal of Food Science and Technology, Wiley, 2021, pp.1-9. ⟨10.1111/ijfs.15318⟩
- Accession number :
- edsair.doi.dedup.....c93257315544520a485397a880c758d8