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Fazio NA, Russo N, Foti P, Pino A, Caggia C, Randazzo CL. Inside Current Winemaking Challenges: Exploiting the Potential of Conventional and Unconventional Yeasts. Microorganisms 2023; 11:1338. [PMID: 37317312 DOI: 10.3390/microorganisms11051338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 06/16/2023] Open
Abstract
Wine represents a complex matrix in which microbial interactions can strongly impact the quality of the final product. Numerous studies have focused on optimizing microbial approaches for addressing new challenges to enhance quality, typicity, and food safety. However, few studies have investigated yeasts of different genera as resources for obtaining wines with new, specific traits. Currently, based on the continuous changes in consumer demand, yeast selection within conventional Saccharomyces cerevisiae and unconventional non-Saccharomyces yeasts represents a suitable opportunity. Wine fermentation driven by indigenous yeasts, in the various stages, has achieved promising results in producing wines with desired characteristics, such as a reduced content of ethanol, SO2, and toxins, as well as an increased aromatic complexity. Therefore, the increasing interest in organic, biodynamic, natural, or clean wine represents a new challenge for the wine sector. This review aims at exploring the main features of different oenological yeasts to obtain wines reflecting the needs of current consumers in a sustainability context, providing an overview, and pointing out the role of microorganisms as valuable sources and biological approaches to explore potential and future research opportunities.
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Affiliation(s)
- Nunzio A Fazio
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
| | - Nunziatina Russo
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
- ProBioEtna Srl, Spin off University of Catania, Via S. Sofia 100, 95123 Catania, Italy
| | - Paola Foti
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
| | - Alessandra Pino
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
- ProBioEtna Srl, Spin off University of Catania, Via S. Sofia 100, 95123 Catania, Italy
| | - Cinzia Caggia
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
- ProBioEtna Srl, Spin off University of Catania, Via S. Sofia 100, 95123 Catania, Italy
| | - Cinzia L Randazzo
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia, 100, 95123 Catania, Italy
- ProBioEtna Srl, Spin off University of Catania, Via S. Sofia 100, 95123 Catania, Italy
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Xynas B, Barnes C. Yeast or water: producing wine with lower alcohol levels in a warming climate: a review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:3249-3260. [PMID: 36585908 DOI: 10.1002/jsfa.12421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 10/23/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
Climate change effects over the last century have seen grape wine growers being faced with earlier budburst and shorter seasons. One effect is higher sugar levels in the grape berries, resulting in wines with higher than typical alcohol concentrations. Winemakers, both in Australia and globally, need to reassess their wine making approaches to address the challenges associated with warmer drier conditions. This review focuses on two pre-fermentation approaches that address ethanol production during fermentation, so that wine makers can produce a wine with lower final alcohol levels at the same time as addressing any negative impacts on wine quality. First, microbiological yeast approaches are reviewed. This approach can reduce final alcohol levels in a treated wine between 0.2% v/v-3.7% v/v; however, diverse wine quality impacts can result, dependant on the microbiological yeast approach taken. Second, the pre-fermentation approach of water addition/substitution into a high sugar grape must is reviewed. To date, recent studies indicate that this 'water treatment' of musts approach is effective with respect to reducing final alcohol levels from between 0.6% v/v-5.9% v/v in the resultant wines, with less variation effects on final wine quality. It is noted that further studies for the 'water treatment' of high sugar musts approach are required to provide additional foundational data sets with respect to impacts on chemical, phenolic and sensory attributes of the final wine products, both within and across vintages. This is especially important as winemakers adapt their winemaking approaches in a changing climate. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Billy Xynas
- Faculty of Veterinary and Agricultural Sciences, Wine Technology and Viticulture, University of Melbourne, Melbourne, VIC, Australia
| | - Chris Barnes
- Faculty of Veterinary and Agricultural Sciences, Wine Technology and Viticulture, University of Melbourne, Melbourne, VIC, Australia
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Gardner JM, Alperstein L, Walker ME, Zhang J, Jiranek V. Modern yeast development: finding the balance between tradition and innovation in contemporary winemaking. FEMS Yeast Res 2023; 23:6762920. [PMID: 36255399 PMCID: PMC9990983 DOI: 10.1093/femsyr/foac049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/11/2022] [Accepted: 02/01/2023] [Indexed: 11/13/2022] Open
Abstract
A key driver of quality in wines is the microbial population that undertakes fermentation of grape must. Winemakers can utilise both indigenous and purposefully inoculated yeasts to undertake alcoholic fermentation, imparting wines with aromas, flavours and palate structure and in many cases contributing to complexity and uniqueness. Importantly, having a toolbox of microbes helps winemakers make best use of the grapes they are presented with, and tackle fermentation difficulties with flexibility and efficiency. Each year the number of strains available commercially expands and more recently, includes strains of non-Saccharomyces, strains that have been improved using both classical and modern yeast technology and mixed cultures. Here we review what is available commercially, and what may be in the future, by exploring recent advances in fermentation relevant strain improvement technologies. We also report on the current use of microbes in the Australian wine industry, as reported by winemakers, as well as regulations around, and sentiment about the potential use of genetically modified organisms in the future.
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Affiliation(s)
- Jennifer M Gardner
- Department of Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, PMB1, Glen Osmond 5064, South Australia, Australia
| | - Lucien Alperstein
- Department of Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, PMB1, Glen Osmond 5064, South Australia, Australia
| | - Michelle E Walker
- Department of Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, PMB1, Glen Osmond 5064, South Australia, Australia
| | - Jin Zhang
- Department of Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, PMB1, Glen Osmond 5064, South Australia, Australia
| | - Vladimir Jiranek
- Department of Wine Science, School of Agriculture, Food and Wine, The University of Adelaide, PMB1, Glen Osmond 5064, South Australia, Australia.,Australian Research Council Training Centre for Innovative Wine Production, Urrbrae 5064, South Australia, Australia
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Wang G, Li Q, Zhang Z, Yin X, Wang B, Yang X. Recent progress in adaptive laboratory evolution of industrial microorganisms. J Ind Microbiol Biotechnol 2022; 50:6794275. [PMID: 36323428 PMCID: PMC9936214 DOI: 10.1093/jimb/kuac023] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/24/2022] [Indexed: 01/12/2023]
Abstract
Adaptive laboratory evolution (ALE) is a technique for the selection of strains with better phenotypes by long-term culture under a specific selection pressure or growth environment. Because ALE does not require detailed knowledge of a variety of complex and interactive metabolic networks, and only needs to simulate natural environmental conditions in the laboratory to design a selection pressure, it has the advantages of broad adaptability, strong practicability, and more convenient transformation of strains. In addition, ALE provides a powerful method for studying the evolutionary forces that change the phenotype, performance, and stability of strains, resulting in more productive industrial strains with beneficial mutations. In recent years, ALE has been widely used in the activation of specific microbial metabolic pathways and phenotypic optimization, the efficient utilization of specific substrates, the optimization of tolerance to toxic substance, and the biosynthesis of target products, which is more conducive to the production of industrial strains with excellent phenotypic characteristics. In this paper, typical examples of ALE applications in the development of industrial strains and the research progress of this technology are reviewed, followed by a discussion of its development prospects.
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Affiliation(s)
| | | | - Zhan Zhang
- Technology Center, China Tobacco Henan Industrial Co., Ltd. Zhengzhou, Henan 450000, People's Republic of China
| | - Xianzhong Yin
- Technology Center, China Tobacco Henan Industrial Co., Ltd. Zhengzhou, Henan 450000, People's Republic of China
| | - Bingyang Wang
- Laboratory of Biotransformation and Biocatalysis, School of Tobacco Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450000, People's Republic of China
| | - Xuepeng Yang
- Correspondence should be addressed to: Xuepeng Yang, Zhengzhou University of Light Industry, Dongfeng Road 5, Zhengzhou, Henan 450002, People's Republic of China. Tel.: +86-152-3712-7687. Fax: +86-0371-8660-8262. E-mail:
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Gonzalez R, Guindal AM, Tronchoni J, Morales P. Biotechnological Approaches to Lowering the Ethanol Yield during Wine Fermentation. Biomolecules 2021; 11:1569. [PMID: 34827567 PMCID: PMC8615690 DOI: 10.3390/biom11111569] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/16/2021] [Accepted: 10/20/2021] [Indexed: 11/17/2022] Open
Abstract
One of the most prominent consequences of global climate warming for the wine industry is a clear increase of the sugar content in grapes, and thus the alcohol level in wines. Among the several approaches to address this important issue, this review focuses on biotechnological solutions, mostly relying on the selection and improvement of wine yeast strains for reduced ethanol yields. Other possibilities are also presented. Researchers are resorting to both S. cerevisiae and alternative wine yeast species for the lowering of alcohol yields. In addition to the use of selected strains under more or less standard fermentation conditions, aerobic fermentation is increasingly being explored for this purpose. Genetic improvement is also playing a role in the development of biotechnological tools to counter the increase in the wine alcohol levels. The use of recombinant wine yeasts is restricted to research, but its contribution to the advancement of the field is still relevant. Furthermore, genetic improvement by non-GMO approaches is providing some interesting results, and will probably result in the development of commercial yeast strains with a lower alcohol yield in the near future. The optimization of fermentation processes using natural isolates is, anyway, the most probable source of advancement in the short term for the production of wines with lower alcohol contents.
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Affiliation(s)
- Ramon Gonzalez
- Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), 26007 La Rioja, Spain; (R.G.); (A.M.G.)
| | - Andrea M. Guindal
- Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), 26007 La Rioja, Spain; (R.G.); (A.M.G.)
| | - Jordi Tronchoni
- Faculty of Health Sciences, Valencian International University (VIU), 46002 Valencia, Spain;
| | - Pilar Morales
- Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), 26007 La Rioja, Spain; (R.G.); (A.M.G.)
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