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Yeasts are truly fascinating microorganisms. Due to their diverse and dynamic activities, they have been used for the production of many interesting products, such as beer, wine, bread, biofuels and biopharmaceuticals. Saccharomyces cerevisiae (bakers’ yeast) is the yeast species that is surely the most exploited by man. Saccharomyces is a top choice organism for industrial applications, although its use for producing beer dates back to at least the 6th millennium BC. Bakers’ yeast has been a cornerstone of modern biotechnology, enabling the development of efficient production processes for antibiotics, biopharmaceuticals, technical enzymes, and ethanol and biofuels. Today, diverse yeast species are explored for industrial applications, such as e.g. Saccharomyces species, Pichia pastoris and other Pichia species, Kluyveromyces marxianus, Hansenula polymorpha, Yarrowia lipolytica, Candida species, Phaffia rhodozyma, wild yeasts for beer brewing, etc. This Special Issue is focused on recent developments of yeast biotechnology with topics including recent techniques for characterizing yeast and their physiology (including omics and nanobiotechnology techniques), methods to adapt industrial strains (including metabolic, synthetic and evolutionary engineering) and the use of yeasts as microbial cell factories to produce biopharmaceuticals, enzymes, alcohols, organic acids, flavours and fine chemicals, and advances in yeast fermentation technology and industrial fermentation processes.

Technology: general issues --- coffee processing --- coffee fermentation --- starter culture --- coffee beverage --- yeast --- Icewine --- Saccharomyces cerevisiae --- hyperosmotic stress --- CRISPR-Cas9 --- glycerol transport --- STL1 --- brewing --- Cyberlindnera --- NABLAB --- non-alcoholic beer --- non-conventional yeast --- non-Saccharomyces yeast --- response surface methodology --- Ustilago --- itaconic acid --- process improvement --- lignocellulosic feedstock --- yeasts --- grape --- federweisser --- wine --- microbiota identification --- MALDI-TOF MS Biotyper --- Torulaspora delbrueckii --- craft beer --- microbrewery plant --- mixed fermentation --- aroma profile --- strain collection --- aroma profiling --- gas chromatography --- wine yeast --- Saccharomyces --- fermentation --- volatile aroma compounds --- Simultaneous inoculation --- Alcoholic fermentation --- Malolactic fermentation --- Sacccharomyces cerevisiae --- Oenococcus oeni --- PN4TM --- OmegaTM --- Aroma profile --- antioxidant --- coffee --- W. anomalus --- industrial brewer’s strains --- adaptive laboratory evolution (ALE) --- snowflake phenotype --- beer fermentation --- wine yeasts --- lactic acid bacteria --- co-inoculation --- sequence inoculation --- flavor compounds --- color pigments --- cell printing --- piezoelectric dispensing --- GFP-tagged yeast clone collection --- living cell microarrays --- microfluidic chip --- dynamic single-cell analysis --- Candida albicans --- adhesion --- fibronectin --- nanomotion --- atomic force microscope (AFM) --- xylose metabolism --- genetic engineering --- biofuel --- Spathaspora passalidarum --- Pichia stipitis --- volatile organic compounds --- proton-transfer reaction-mass spectrometry --- Metschnikowia pulcherrima --- flavor --- non-Saccharomyces yeasts --- fermentation-derived products --- fermented beverages --- beer --- coffee bean fermentation --- itaconic acid production --- bioethanol production --- bioreactors --- yeast micro- and nanobiotechnology

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During the last few years, industrial fermentation technologies have advanced in order to improve the quality of the final product. Some examples of those modern technologies are the biotechnology developments of microbial materials, such as Saccharomyces and non-Saccharomyces yeasts or lactic bacteria from different genera. Other technologies are related to the use of additives and adjuvants, such as nutrients, enzymes, fining agents, or preservatives and their management, which directly influence the quality and reduce the risks in final fermentation products. Other technologies are based on the management of thermal treatments, filtrations, pressure applications, ultrasounds, UV, and so on, which have also led to improvements in fermentation quality in recent years. The aim of the issue is to study new technologies able to improve the quality parameters of fermentation products, such as aroma, color, turbidity, acidity, or any other parameters related to improving sensory perception by the consumers. Food safety parameters are also included.

low-ethanol wines --- wine-related fungi --- non-Saccharomyces --- yeasts --- narince --- wine quality --- tryptophol --- low ethanol wine --- serotonin --- non-conventional yeasts --- Bombino bianco --- Schizosaccharomyces pombe --- volatile compounds --- ethyl carbamate --- phthalates --- autochthonous --- meta-taxonomic analysis --- Pichia kluyveri --- pH control --- IAA --- Torulaspora delbrueckii --- chemical analyses --- aroma profile --- yeast --- enzymatic patterns --- wine flavor --- fermentation --- must replacement --- Saccharomyces cerevisiae --- malolactic fermentation --- wine --- HACCP --- food quality --- sequential inoculation --- alcoholic beverages --- itaconic acid --- biocontrol application --- white wine --- hydroxytyrosol --- tryptophan --- glucose --- kinetic analysis --- wine aroma --- amino acid decarboxylation --- lactic acid bacteria --- vineyard soil --- wine color --- tyrosol --- Saccharomyces --- Gompertz-model --- sequential culture --- biogenic amines --- SO2 reduction --- climate change --- Vineyard Microbiota --- A. terreus --- sulfur dioxide --- human health-promoting compounds --- Hanseniaspora guilliermondii --- non-Saccharomyces screening --- aromatic/sensorial profiles --- Malvar (Vitis vinifera L. cv.) --- probiotics --- Yeasts --- native yeast --- color --- glutathione --- hot pre-fermentative maceration --- technological characterization --- wine-related bacteria --- Riesling --- Torulaspora microellipsoides --- Lachancea thermotolerans --- Metschnikowia pulcherrima --- cashew apple juice --- resveratrol --- biocontrol --- shiraz --- Tannat --- ochratoxin A --- aroma compound --- trehalose --- wine composition --- Hanseniaspora uvarum yeast --- food safety --- acidity --- sensory evaluation --- viticulture --- melatonin --- alcoholic fermentation --- aroma