Screening for new brewing yeasts in the non- Saccharomyces
sector with Torulaspora delbrueckii as model

J 2016

Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model

MICHEL, Maximilian, Jana KOPECKÁ, Tim MEIER-DÖRNBERG, Martin ZARNKOW, Fritz JACOB et. al.

Basic information

Original name

Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model

Authors

MICHEL, Maximilian (276 Germany), Jana KOPECKÁ (203 Czech Republic, belonging to the institution), Tim MEIER-DÖRNBERG (276 Germany), Martin ZARNKOW (276 Germany), Fritz JACOB (276 Germany) and Mathias HUTZLER (276 Germany)

Edition

Yeast, 2016, 0749-503X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.990

RIV identification code

RIV/00216224:14310/16:00089642

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1002/yea.3146

UT WoS

000373797900002

Keywords in English

non-Saccharomyces; Torulaspora delbrueckii; beer; screening; yeast

Abstract

V originále

This study describes a screening system for future brewing yeasts focusing on non- Saccharomyces yeasts. The aim was to find new yeast strains that can ferment beer wort into a respectable beer. Ten Torulaspora delbrueckii strains were put through the screening system, which included sugar utilization tests, hop resistance tests, ethanol resistance tests, polymerase chain reaction fingerprinting, propagation tests, amino acid catabolism and anabolism, phenolic off-flavour tests and trial fermentations. Trial fermentations were analysed for extract reduction, pH drop, yeast concentration in bulk fluid and fermentation by-products. All investigated strains were able to partly ferment wort sugars and showed high tolerance to hop compounds and ethanol. One of the investigated yeast strains fermented all the wort sugars and produced a respectable fruity flavour and a beer of average ethanol content with a high volatile flavour compound concentration. Two other strains could possibly be used for pre-fermentation as a bio-flavouring agent for beers that have been postfermented by Saccharomyces strains as a consequence of their low sugar utilization but good flavour-forming properties.

Links

MUNI/A/1013/2015, interní kód MU

Name: Podpora výzkumu studentů směru mikrobiologie a molekulární biotechnologie (Acronym: MIKRO)

Investor: Masaryk University, Category A

Citovat

MICHEL, Maximilian, Jana KOPECKÁ, Tim MEIER-DÖRNBERG, Martin ZARNKOW, Fritz JACOB and Mathias HUTZLER. Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model. Yeast. 2016, vol. 33, No 4, p. 129-144. ISSN 0749-503X. Available from: https://dx.doi.org/10.1002/yea.3146.

@article{1341623,
   author = {Michel, Maximilian and Kopecká, Jana and MeierandDörnberg, Tim and Zarnkow, Martin and Jacob, Fritz and Hutzler, Mathias},
   article_number = {4},
   doi = {http://dx.doi.org/10.1002/yea.3146},
   keywords = {non-Saccharomyces; Torulaspora delbrueckii; beer; screening; yeast},
   language = {eng},
   issn = {0749-503X},
   journal = {Yeast},
   title = {Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model},
   volume = {33},
   year = {2016}
}

TY  - JOUR
ID  - 1341623
AU  - Michel, Maximilian - Kopecká, Jana - Meier-Dörnberg, Tim - Zarnkow, Martin - Jacob, Fritz - Hutzler, Mathias
PY  - 2016
TI  - Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model
JF  - Yeast
VL  - 33
IS  - 4
SP  - 129-144
EP  - 129-144
SN  - 0749503X
KW  - non-Saccharomyces
KW  - Torulaspora delbrueckii
KW  - beer
KW  - screening
KW  - yeast
N2  - This study describes a screening system for future brewing yeasts focusing on non- Saccharomyces yeasts. The aim was to find new yeast strains that can ferment beer wort into a respectable beer. Ten Torulaspora delbrueckii strains were put through the screening system, which included sugar utilization tests, hop resistance tests, ethanol resistance tests, polymerase chain reaction fingerprinting, propagation tests, amino acid catabolism and anabolism, phenolic off-flavour tests and trial fermentations. Trial fermentations were analysed for extract reduction, pH drop, yeast concentration in bulk fluid and fermentation by-products. All investigated strains were able to partly ferment wort sugars and showed high tolerance to hop compounds and ethanol. One of the investigated yeast strains fermented all the wort sugars and produced a respectable fruity flavour and a beer of average ethanol content with a high volatile flavour compound concentration. Two other strains could possibly be used for pre-fermentation as a bio-flavouring agent for beers that have been postfermented by Saccharomyces strains as a consequence of their low sugar utilization but good flavour-forming properties.
ER  -

MICHEL, Maximilian, Jana KOPECKÁ, Tim MEIER-DÖRNBERG, Martin ZARNKOW, Fritz JACOB and Mathias HUTZLER. Screening for new brewing yeasts in the non- Saccharomyces sector with Torulaspora delbrueckii as model. \textit{Yeast}. 2016, vol.~33, No~4, p.~129-144. ISSN~0749-503X. Available from: https://dx.doi.org/10.1002/yea.3146.

Detailed Information on Publication Record