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1. Novel silica forming peptide, RSGH, from Equus caballus: Its unique biosilica formation under acidic conditions

Author:
Min, Ki Ha; Yeo, Ki Baek; Ki, Mi-Ran; Jun, Sang Ho; Pack, Seung Pil
Source:
Biochemical engineering journal 2020 v.153 pp. 107389
ISSN:
1369-703X
Subject:
yeasts,   etc   ; horses; pH; peptides; silica;     Show all 5 Subjects
Abstract:
... A novel silica forming peptide (SFP), RSGH was designated on the basis of the peptide found from Equus caballus and investigated for its ability to precipitate biosilica under acidic conditions, where biosilica is not easily formed. At pH values of 4, 5 and 6, RSGH showed better performance in the generation of silica particles than the most well-known SFP, silaffin R5, and the amount of the produ ...
DOI:
10.1016/j.bej.2019.107389

2. Self-tuning control of continuous fluidized bed drying of baker’s yeast pellets

Author:
Dürr, Robert; Seidel, Carsten; Neugebauer, Christoph; Bück, Andreas
Source:
Drying technology 2020 v.38 no.5-6 pp. 646-654
ISSN:
1532-2300
Subject:
bakers yeast,   etc   ; drying; fluidized beds; pellets; uncertainty;     Show all 5 Subjects
Abstract:
... Uncertainty in the kinetics of the second drying period represents the major challenge in continuous drying of particulate solids which can be overcome by adaptive feedback control. In this contribution, self-tuning control comprising online-state estimation and adaptive PI-control is considered to guarantee desired product moisture. Advantages of the approach over conventional PI-control are disc ...
DOI:
10.1080/07373937.2019.1662800

3. Telomeres and stress in yeast cells: When genes and environment interact

Author:
Harari, Yaniv; Gershon, Lihi; Alonso-Perez, Elisa; Klein, Shir; Berneman, Yael; Choudhari, Karan; Singh, Pragyan; Sau, Soumitra; Liefshitz, Batia; Kupiec, Martin
Source:
Fungal biology 2020 v.124 no.5 pp. 311-315
ISSN:
1878-6146
Subject:
yeasts,   etc   ; DNA; Saccharomyces cerevisiae; genes; humans; mutants; neoplasms; proteins; telomeres;     Show all 9 Subjects
Abstract:
... Telomeres are structures composed of simple DNA repeats and specific proteins that protect the eukaryotic chromosomal ends from degradation, and facilitate the replication of the genome. They are central to the maintenance of the genome integrity, and play important roles in the development of cancer and in the process of aging in humans. The yeast Saccharomyces cerevisiae has greatly contributed ...
DOI:
10.1016/j.funbio.2019.09.003

4. 100 Years Later, What Is New in Glycerol Bioproduction?

Author:
Semkiv, Marta V.; Ruchala, Justyna; Dmytruk, Kostyantyn V.; Sibirny, Andriy A.
Source:
Trends in biotechnology 2020
ISSN:
0167-7799
Subject:
yeasts,   etc   ; bisulfites; fermentation; glycerol; liquids; markets; metabolic engineering; osmotolerance;     Show all 8 Subjects
Abstract:
... Industrial production of glycerol by yeast, which began during WWI in the so-called Neuberg fermentation, was the first example of metabolic engineering. However, this process, based on bisulfite addition to fermentation liquid, has many drawbacks and was replaced by other methods of glycerol production. Osmotolerant yeasts and other microorganisms that do not require addition of bisulfite to stee ...
DOI:
10.1016/j.tibtech.2020.02.001

5. The role of temperature, pH and nutrition in process development of the unique oleaginous yeast Metschnikowia pulcherrima

Author:
Abeln, Felix; Chuck, Christopher J
Source:
Journal of chemical technology and biotechnology 2020 v.95 no.4 pp. 1163-1172
ISSN:
0268-2575
Subject:
yeast extract; yeasts,   etc   ; Metschnikowia pulcherrima; cell growth; glucose; lipids; oils; pH; polyols; reaction kinetics; secretion; starvation; temperature;     Show all 13 Subjects
Abstract:
... BACKGROUND: Lipids produced from oleaginous yeasts are a promising alternative to terrestrial oils. Despite promising cellular yields of lipid however, an industrial process remains elusive. One key processing bottleneck is the need to provide nutrient‐rich conditions for cellular growth and then extended nutrient‐depleted conditions for lipid accumulation. Surprisingly, investigations detailing p ...
DOI:
10.1002/jctb.6301

6. Transcriptomics unravels the adaptive molecular mechanisms of Brettanomyces bruxellensis under SO2 stress in wine condition

Author:
Skalic, Miha; Valdetara, Federica; Škalič, Miha; Fracassetti, Daniela; Louw, Marli; Compagno, Concetta; du Toit, Maret; Foschino, Roberto; Petrovič, Uroš; Divol, Benoit; Vigentini, Ileana
Source:
Food microbiology 2020 v.90 pp. 103483
ISSN:
0740-0020
Subject:
spoilage yeast; yeasts,   etc   ; gene expression; gene expression regulation; genes; genetic background; metabolism; oxidative stress; phenol; sensory evaluation; sequence analysis; sugar alcohols; sulfites; sulfur dioxide; transcriptomics; winemaking; wines;     Show all 17 Subjects
Abstract:
... Sulfur dioxide is generally used as an antimicrobial in wine to counteract the activity of spoilage yeasts, including Brettanomyces bruxellensis. However, this chemical does not exert the same effectiveness on different B. bruxellensis yeasts since some strains can proliferate in the final product leading to a negative sensory profile due to 4-ethylguaiacol and 4-ethylphenol. Thus, the capability ...
DOI:
10.1016/j.fm.2020.103483

7. Co‐fermentation of agricultural and industrial waste by Naganishia albida for microbial lipid production in fed‐batch fermentation

Author:
Sathiyamoorthi, Ezhaveni; Dikshit, Pritam Kumar; Kumar, Prasun; Kim, Beom Soo
Source:
Journal of chemical technology and biotechnology 2020 v.95 no.3 pp. 813-821
ISSN:
0268-2575
Subject:
yeast extract; yeasts,   etc   ; batch fermentation; biodiesel; biomass; carbon; cell growth; fatty acids; glycerol; hydrolysates; industrial wastes; industry; lignocellulose; lipid content; nitrogen; nutrition; oils; onions;     Show all 18 Subjects
Abstract:
... BACKGROUND: Oleaginous yeast Naganishia albida is well known for its ability to utilize a variety of carbon sources, including lignocellulosic hydrolysates, complex sugars and fatty acids. In this study, crude glycerol derived from the biodiesel industry and onion waste hydrolysate (OWH) were used as potential substrates for microbial lipid production. RESULTS: Both substrates provided sufficient ...
DOI:
10.1002/jctb.6271

8. Brewing and malting technology by‐products as raw materials in L‐(+)‐lactic acid fermentation

Author:
Radosavljević, Miloš; Pejin, Jelena; Pribić, Milana; Kocić‐Tanackov, Sunčica; Mladenović, Dragana; Djukić‐Vuković, Aleksandra; Mojović, Ljiljana
Source:
Journal of chemical technology and biotechnology 2020 v.95 no.2 pp. 339-347
ISSN:
0268-2575
Subject:
brewers yeast; yeast extract,   etc   ; batch fermentation; brewing; hydrolysates; industrial byproducts; industry; lecithins; malt; malting; oils; polysorbates; raw materials; response surface methodology; spent grains;     Show all 15 Subjects
Abstract:
... BACKGROUND: Brewer's spent grain (BSG), brewer's yeast (BY), malt rootlets (MR), and soy lecithin (SL) are valuable and abundant by‐products obtained from brewing, malting, and oil industry, respectively. L‐(+)‐lactic acid (LA) is organic acid that has a wide range of application. In this study hydrolysate obtained from BSG and MR mixture (BSGMR), was used in combination with SL and BY extract (BY ...
DOI:
10.1002/jctb.5878

9. Current state of aromatics production using yeast: achievements and challenges

Author:
Liu, Quanli; Liu, Yi; Chen, Yun; Nielsen, Jens
Source:
Current opinion in biotechnology 2020 v.65 pp. 65-74
ISSN:
0958-1669
Subject:
yeasts,   etc   ; Saccharomyces cerevisiae; aromatic compounds; biosynthesis; feedstocks; markets; metabolic engineering; models; pharmaceutical industry; shikimate pathway;     Show all 10 Subjects
Abstract:
... Aromatics find a range of applications in the chemical, food, cosmetic and pharmaceutical industries. While production of aromatics on the current market heavily relies on petroleum-derived chemical processes or direct extraction from plants, there is an increasing demand for establishing new renewable and sustainable sources of aromatics. To this end, microbial cell factories-mediated bioproducti ...
DOI:
10.1016/j.copbio.2020.01.008

10. Microbial contamination of commercial corn-based fuel ethanol fermentations

Author:
Rich, Joseph O.; Anderson, Amber M.; Leathers, Timothy D.; Bischoff, Kenneth M.; Liu, Siqing; Skory, Christopher D.
Source:
Bioresource technology reports 2020 v.11 pp. 100433
ISSN:
2589-014X
Subject:
yeasts,   etc   ; Lactobacillus; cleaning; ethanol fuels; fermentation; fermenters; fungal contamination; liquefaction; profitability; sequence analysis; tanks;     Show all 11 Subjects
Abstract:
... Microbial contamination in commercial corn-based fuel ethanol facilities reduces efficiency and profitability. In this study, both bacterial and fungal contamination were quantitated using culture-independent DNA sequencing methods. Five wet mill and five dry grind plants were sampled at multiple process points. Fermentors primarily showed contamination by Lactobacillus with little contamination b ...
DOI:
10.1016/j.biteb.2020.100433

11. Some clues about the changes in wine aroma composition associated to the maturation of “neutral” grapes

Author:
Arias-Pérez, Ignacio; Ferrero-Del-Teso, Sara; Sáenz-Navajas, María Pilar; Fernández-Zurbano, Purificación; Lacau, Blanca; Astraín, Jesús; Barón, Cristina; Ferreira, Vicente; Escudero, Ana
Source:
Food chemistry 2020 v.320 pp. 126610
ISSN:
0308-8146
Subject:
yeasts,   etc   ; NAD (coenzyme); NADP (coenzyme); acetaldehyde; acids; grapes; harvest date; odor compounds; odors; polyphenols; wines;     Show all 11 Subjects
Abstract:
... This paper presents a study of the influence of the harvesting date on concentrations of odorants in Moristel wines of two vintages. The wine made from grapes harvested early facilitated the accumulation of acetaldehyde (associated with low polyphenols concentrations) and higher concentrations of branched acids. A reason for these greater levels could be the lack of reduction factors (NADH or NADP ...
DOI:
10.1016/j.foodchem.2020.126610

12. Addition of volatile sulfur compounds to yeast at the early stages of fermentation reveals distinct biological and chemical pathways for aroma formation

Author:
Kinzurik, Matias I.; Deed, Rebecca C.; Herbst-Johnstone, Mandy; Slaghenaufi, Davide; Guzzon, Raffaele; Gardner, Richard C.; Larcher, Roberto; Fedrizzi, Bruno
Source:
Food microbiology 2020 v.89 pp. 103435
ISSN:
0740-0020
Subject:
yeasts,   etc   ; acetates; chemical degradation; fermentation; grapes; hydrogen sulfide; methanethiol; odors; sulfur; wines;     Show all 10 Subjects
Abstract:
... Volatile sulfur compounds (VSCs) greatly influence the sensory properties and quality of wine and arise via both biological and chemical mechanisms. VSCs formed can also act as precursors for further downstream VSCs, thus elucidating the pathways leading to their formation is paramount. Short-term additions of exogenous hydrogen sulfide (H₂S), ethanethiol (EtSH), S-ethylthio acetate (ETA), methane ...
DOI:
10.1016/j.fm.2020.103435

13. Biosynthesis of terpene compounds using the non-model yeast Yarrowia lipolytica: grand challenges and a few perspectives

Author:
Worland, Alyssa M; Czajka, Jeffrey J; Li, Yanran; Wang, Yechun; Tang, Yinjie J; Su, Wei Wen
Source:
Current opinion in biotechnology 2020 v.64 pp. 134-140
ISSN:
0958-1669
Subject:
yeasts,   etc   ; Yarrowia lipolytica; biosynthesis; carbon; engineering; fermentation; limonoids; mutation; protein engineering; toxic substances;     Show all 10 Subjects
Abstract:
... Yarrowia lipolytica has emerged as an important non-model host for terpene production. However, three main challenges remain in industrial production using this yeast. First, considerable knowledge gaps exist in metabolic flux across multiple compartments, cofactor generation, and catabolism of non-sugar carbon sources. Second, many enzymatic steps in the complex-terpene synthesis pathway can pose ...
DOI:
10.1016/j.copbio.2020.02.020

14. Regulation of trehalose, a typical stress protectant, on central metabolisms, cell growth and division of Saccharomyces cerevisiae CEN.PK113-7D

Author:
Zhang, Xiaoru; Zhang, Yaxian; Li, Hao
Source:
Food microbiology 2020 v.89 pp. 103459
ISSN:
0740-0020
Subject:
yeasts,   etc   ; Saccharomyces cerevisiae; adenosine triphosphate; cell cycle; cell growth; energy; ethanol; fermentation; glucose; glycolysis; trehalose;     Show all 11 Subjects
Abstract:
... Trehalose could protect the typical food microorganism Saccharomyces cerevisiae cell against environmental stresses; however, the other regulation effects of trehalose on yeast cells during the fermentation are still poorly understood. In this manuscript, different concentrations (i.e., 0, 2 and 5% g/v) of trehalose were respectively added into the medium to evaluate the effect of trehalose on gro ...
DOI:
10.1016/j.fm.2020.103459

15. Adsorption kinetics and thermodynamics of yeast β-glucan for off-odor compounds in silver carp mince

Author:
Zhang, Huimin; Wu, Dan; Huang, Qilin; Liu, Zhiyu; Luo, Xiaogang; Xiong, Shanbai; Yin, Tao
Source:
Food chemistry 2020 v.319 pp. 126232
ISSN:
0308-8146
Subject:
yeasts,   etc   ; Hypophthalmichthys molitrix; adsorption; beta-glucans; endothermy; equations; hydrophobic bonding; octenol; off odors; sorption isotherms; thermodynamics;     Show all 11 Subjects
Abstract:
... Yeast β-glucan (YG) adsorbs off-odor in silver carp mince due to its more porous structure. To explore adsorption behavior and mechanism, adsorption kinetics and thermodynamics of YG for 3 off-odor compounds (hexanal, 1-octen-3-ol and nonanal) were investigated by pseudo-first/second-order models and isothermal equations (Langmuir, Freundlich and Redlich-Peterson). Kinetic experiments indicated ad ...
DOI:
10.1016/j.foodchem.2020.126232

16. Process development for the enhanced production of bio-nematicide Purpureocillium lilacinum KU8 under solid-state fermentation

Author:
Mousumi Das, M.; Haridas, M.; Sabu, A.
Source:
Bioresource technology 2020 v.308 pp. 123328
ISSN:
0960-8524
Subject:
yeast extract,   etc   ; Purpureocillium lilacinum; biomass production; response surface methodology; solid state fermentation; water content; wheat bran;     Show all 7 Subjects
Abstract:
... Response surface methodology (RSM) was used to optimize the process parameters for maximizing the biomass production of Purpureocillium lilacinum KU8 using wheat bran as substrate under solid-state fermentation (SSF). The experiments of one-factor-at-a-time approach (OFAT) for central composite design (CCD) to analyze the response pattern brought out the parameters for maximum biomass production. ...
DOI:
10.1016/j.biortech.2020.123328

17. Development of sake yeast haploid set with diverse brewing properties using sake yeast strain Hiroshima no. 6 exhibiting sexual reproduction

Author:
Yamasaki, Risa; Goshima, Tetsuya; Oba, Kenji; Kanai, Muneyoshi; Ohdoi, Ritsushi; Hirata, Dai; Akao, Takeshi
Source:
Journal of bioscience and bioengineering 2020 v.129 no.6 pp. 706-714
ISSN:
1389-1723
Subject:
yeasts,   etc   ; brewing; crossbreds; crossing; diploidy; genetic variation; haploidy; meiosis; mutagenesis; principal component analysis; sake; sporulation;     Show all 12 Subjects
Abstract:
... Among sake yeast strains, Kyokai no. 7 (K7) and its closely related strains (K7 group) are predominantly used because of their excellent brewing properties. In the sake industrial sector, the need for various types of yeast strains is high. Although crossbreeding is an effective method for generating genetic diversity that should result in diverse characteristics, most K7 group strains lack normal ...
DOI:
10.1016/j.jbiosc.2020.01.005

18. Lipid Production by Rhodotorula glutinis in Continuous Cultivation with a Gravity Sedimentation System

Author:
Shen, Hongwei; Li, Qiang; Yu, Xue
Source:
Indian journal of microbiology 2020 v.60 no.2 pp. 246-250
ISSN:
0046-8991
Subject:
yeasts,   etc   ; Rhodotorula glutinis; biochemical pathways; biomass; bioreactors; gravity; lipid content; lipids;     Show all 8 Subjects
Abstract:
... Lipid accumulation is generally believed to be a partially growth-coupled biochemical process that results in differences in lipid content between different cells. To separate lipid-rich cells and increase the cellular biomass in bioreactors during the cultivation of the oleaginous yeasts, a gravity sedimentation system (GSS) is coupled to a bioreactor. The dilution rate (D) and the ratio of the o ...
DOI:
10.1007/s12088-019-00849-3
PubMed:
32255857
PubMed Central:
PMC7105584

19. Yeast systems biology in understanding principles of physiology underlying complex human diseases

Author:
Yu, Rosemary; Nielsen, Jens
Source:
Current opinion in biotechnology 2020 v.63 pp. 63-69
ISSN:
0958-1669
Subject:
yeasts,   etc   ; cell growth; experimental design; gene expression; human diseases; metabolism; models; multiomics; nutrient content;     Show all 9 Subjects
Abstract:
... Complex human diseases commonly arise from deregulation of cell growth, metabolism, and/or gene expression. Yeast is a eukaryal model organism that is widely used to study these processes. Yeast systems biology benefits from the ability to exert fine experimental control over the cell growth rate and nutrient composition, which allows orthogonal experimental design and generation of multi-omics da ...
DOI:
10.1016/j.copbio.2019.11.021

20. Correlating single-molecule characteristics of the yeast aquaglyceroporin Fps1 with environmental perturbations directly in living cells

Author:
Shashkova, Sviatlana; Andersson, Mikael; Hohmann, Stefan; Leake, Mark C.
Source:
Methods 2020
ISSN:
1046-2023
Subject:
yeasts,   etc   ; Saccharomyces cerevisiae; fluorescence microscopy; hydrogen peroxide; membrane proteins; oxidative stress; plasma membrane; stoichiometry;     Show all 8 Subjects
Abstract:
... Membrane proteins play key roles at the interface between the cell and its environment by mediating selective import and export of molecules via plasma membrane channels. Despite a multitude of studies on transmembrane channels, understanding of their dynamics directly within living systems is limited. To address this, we correlated molecular scale information from living cells with real time chan ...
DOI:
10.1016/j.ymeth.2020.05.003