Works (12)

Updated: April 5th, 2024 05:05

2020 book

Introduction to Brewing and Fermentation Science

By: J. Sheppard n

UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Crossref
Added: January 23, 2022

2018 journal article

The ecology of insect–yeast relationships and its relevance to human industry

Proceedings of the Royal Society B: Biological Sciences, 285(1875), 20172733.

Contributors: A. Madden n, M. Epps*, T. Fukami*, R. Irwin n, J. Sheppard n, D. Sorger n, R. Dunn n

author keywords: diffuse mutualism; dispersal; Ascomycota
MeSH headings : Animals; Ascomycota / physiology; Biological Evolution; Ecosystem; Food Industry; Humans; Insecta / microbiology; Plant Nectar / metabolism; Symbiosis
TL;DR: This work proposes a ‘dispersal–encounter hypothesis' whereby yeasts are dispersed by insects between ephemeral, spatially disparate sugar resources, and insects, in turn, obtain the benefits of an honest signal from yeasts for the sugar resources. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: August 6, 2018

2017 journal article

The application of near-infrared spectroscopy in beer fermentation for online monitoring of critical process parameters and their integration into a novel feedforward control strategy

JOURNAL OF THE INSTITUTE OF BREWING, 123(3), 347–360.

By: L. Vann n, J. Layfield n & J. Sheppard n

author keywords: NIRS; fermentation; quality improvement; process monitoring; feed-forward control
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2017 journal article

Use of near-infrared spectroscopy (NIRs) in the biopharmaceutical industry for real-time determination of critical process parameters and integration of advanced feedback control strategies using MIDUS control

JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY, 44(12), 1589–1603.

By: L. Vann n & J. Sheppard n

MeSH headings : Bioreactors / microbiology; Drug Industry / methods; Escherichia coli / cytology; Escherichia coli / growth & development; Escherichia coli / metabolism; Feedback; Fermentation; Spectroscopy, Near-Infrared
TL;DR: MIDUS control was employed to increase batch-to-batch consistency in final product titers, decrease the coefficient of variability from 8.49 to 1.16%, predict possible exhaust filter failures and close the loop to prevent their occurrence and avoid lost batches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2016 journal article

alpha,beta-Dicarbonyl reduction is mediated by the Saccharomyces Old Yellow Enzyme

FEMS YEAST RESEARCH, 16(5).

By: B. Bergen*, N. Cyr n, R. Strasser*, M. Blanchette*, J. Sheppard n & A. Jardim*

author keywords: Old Yellow Enzyme; diacetyl; 2,3-butanedione; Saccharomyces alpha,beta-dicarbonyl
MeSH headings : Acetoin / metabolism; Diacetyl / metabolism; Gene Expression Profiling; Kinetics; Mass Spectrometry; NADP / metabolism; NADPH Dehydrogenase / isolation & purification; NADPH Dehydrogenase / metabolism; Oxidation-Reduction; Pentanones / metabolism; Saccharomyces cerevisiae / enzymology; Saccharomyces cerevisiae / metabolism
TL;DR: In insights into the mechanism for reducing VDKs and decreasing maturation times of beer which are of commercial importance, Transcriptomic analysis of S. cerevisiae and S. pastorianus yeast during industrial fermentations showed that the transcripts for OYE1, OYE2, arabinose dehydrogenase (ARA1) and α-acetolactate synthase (ILV2) were differentially regulated in a manner that correlated with changes in extracellular levels of VDK (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

A Novel Method of Inducing and Retaining Cell Cycle Synchronization in Cultures of Saccharomyces cerevisiae

JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS, 72(2), 102–109.

By: J. Layfield n, L. Vann n & J. Sheppard n

author keywords: Beer; Cell cycle; Glycerol stocks; Saccharomyces cerevisiae; Seed expansion; Synchronization
TL;DR: A novel method for inducing and retaining cell cycle synchronization in yeast cultures (diploid and polyploid-type) was developed using a simple and natural phased expansion method, in which the volume of the culture was increased step-wise at time periods equal to the cell doubling time. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Characterization of Hybrid Strains of Saccharomyces pastorianus for Desiccation Tolerance

JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS, 69(2), 108–115.

By: J. Layfield n, T. Phister n & J. Sheppard n

author keywords: Active dry yeast; Beer; Dehydration; Saccharomyces cerevisiae; Saccharomyces pastorianus; Viability
TL;DR: The findings suggest that S. pastorianus-Frohberg type is less tolerant to desiccation than either S. cerevisiae or S. bayanus type, and selection of the correct type of S. pastorsiae for use in active dry yeast could reduce the possibility of contamination or extended lag phases leading to stuck fermentations. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Development of a LC/MS method for analysis of total vicinal diketones in beer

JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS, 65(2), 70–76.

By: M. Blanchette, B. Bergen & J. Sheppard

author keywords: amino acids; decarboxylation; LC/MS; o-phenylenediamine; vicinal diketones
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Vicinal diketone production and amino acid uptake by two active dry lager yeasts during beer fermentation

Journal of the American Society of Brewing Chemists, 65(3), 138–144.

By: N. Cyr*, M. Blanchette*, S. Price* & J. Sheppard*

TL;DR: Overall, dry yeasts resulted in a reduced level of performance compared with freshly propagated cultures, suggesting that the direct utilization of ADLY as an inoculum for beer fermentation at the industrial scale is not recommended. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

2005 journal article

A Kinetic Model for Suspended and Attached Growth of a Defined Mixed Culture

Biotechnology Progress, 21(3), 720–727.

By: K. Tam*, M. Matsumoto* & J. Sheppard*

MeSH headings : Acinetobacter / physiology; Bacterial Adhesion / physiology; Bioreactors / microbiology; Candida / isolation & purification; Candida / physiology; Cell Culture Techniques / methods; Cell Proliferation; Coculture Techniques / methods; Computer Simulation; Enterobacter / physiology; Ethanol / metabolism; Glucose / metabolism; Industrial Waste / prevention & control; Maltose / metabolism; Models, Biological; Water Microbiology; Water Pollutants, Chemical / pharmacokinetics
TL;DR: Kinetic experiments were carried out in a semicontinuous wastewater treatment process called self‐cycling fermentation (SCF) using a defined mixed culture and various concentrations of synthetic brewery wastewater and indicated that substrate removal by the suspended cells was directly related to the biomass concentration. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Crossref
Added: December 21, 2020

2005 journal article

Comparison of PCR-DGGE and Selective Plating Methods for Monitoring the Dynamics of a Mixed Culture Population in Synthetic Brewery Wastewater

Biotechnology Progress, 21(3), 712–719.

By: K. Tam*, C. Yang*, M. Matsumoto*, D. Crowley* & J. Sheppard*

MeSH headings : Acinetobacter / isolation & purification; Acinetobacter / physiology; Bioreactors / microbiology; Candida / isolation & purification; Candida / physiology; Cell Culture Techniques / methods; Coculture Techniques / methods; Colony Count, Microbial / methods; Electrophoresis / methods; Enterobacter / isolation & purification; Enterobacter / physiology; Industrial Waste / analysis; Polymerase Chain Reaction / methods; Water Microbiology; Water Pollutants, Chemical / pharmacokinetics
TL;DR: PCR‐DGGE was effective for detecting the dominant species, but culture‐based methods were more accurate for monitoring the population dynamics of these microorganisms during growth in the wastewater medium. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Crossref
Added: December 21, 2020

1990 journal article

The effects of a biosurfactant on oxygen transfer in a cyclone column reactor

Journal of Chemical Technology & Biotechnology, 48(3), 325–336.

By: J. Sheppard* & D. Cooper*

MeSH headings : Bacillus subtilis / cytology; Bacillus subtilis / metabolism; Bacterial Proteins / biosynthesis; Bacterial Proteins / isolation & purification; Bacterial Proteins / pharmacology; Cell Division; Industrial Microbiology / methods; Lipopeptides; Oxygen / pharmacokinetics; Peptides, Cyclic; Quaternary Ammonium Compounds / pharmacology; Sodium Dodecyl Sulfate / pharmacology; Surface-Active Agents / isolation & purification; Surface-Active Agents / pharmacology
TL;DR: A laboratory-scale cyclone column reactor was tested to determine how its oxygen transfer characteristics were affected by surfactants in the liquid medium, and the effectiveness of the surfactant was probably due to an increase in the interfacial film resistance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Source: Crossref
Added: December 21, 2020

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