scholarly journals The Importance of Yeasts on Fermentation Quality and Human Health-Promoting Compounds

Fermentation ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 46 ◽  
Author(s):  
Alice Vilela
Keyword(s):  
Human Health ◽  
Wine Fermentation ◽  
Wine Quality ◽  
Fermented Beverages ◽  
Symbiotic Relationships ◽  
Yeast Strains ◽  
Wine Composition ◽  
Kombucha Tea ◽  
Health Promoting ◽  
Fermentation Quality

Non-Saccharomyces are important during wine fermentation once they influence wine composition. In the early stages of wine fermentation, and together with indigenous or commercial strains of Saccharomyces cerevisiae, non-Saccharomyces are able to transform grape-must sugars into ethanol, CO2, and other important secondary metabolites. A better understanding of yeast biochemistry will allow the selection of yeast strains that have defined specific influences on fermentation efficiency, wine quality, and the production of human health-promoting compounds. Yeast metabolism produces compounds derived from tryptophan, melatonin, and serotonin, which are found in fermented beverages, such as wine and beer. Melatonin is a neurohormone secreted from the pineal gland and has a wide-ranging regulatory and neuroprotective role, while serotonin, as well as being a precursor of melatonin synthesis, is also a neurotransmitter. This review summarizes the importance of some conventional and nonconventional yeast strains’ alcoholic fermentations, especially in the production of metabolites that promote human health and thus, attract consumers attention towards fermented beverages. A brief reference is also made on fermented beverages containing probiotics, namely kombucha, also known as kombucha tea, and its interesting microorganism’s symbiotic relationships named SCOBY.

scholarly journals The Influence of Non-Saccharomyces Species on Wine Fermentation Quality Parameters

Fermentation ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 54 ◽  
Author(s):  
Benito ◽  
Calderón ◽  
Benito
Keyword(s):  
Quality Parameters ◽  
Quality Improvements ◽  
Wine Quality ◽  
Yeast Strains ◽  
Fermentation Quality ◽  
Pichia Kluyveri ◽  
Near Future ◽  
Interesting Species ◽  
Spoilage Microorganisms

In the past, some microbiological studies have considered most non-Saccharomyces species to be undesirable spoilage microorganisms. For several decades, that belief made the Saccharomyces genus the only option considered by winemakers for achieving the best possible wine quality. Nevertheless, in recent decades, some strains of non-Saccharomyces species have been proven to improve the quality of wine. Non-Saccharomyces species can positively influence quality parameters such as aroma, acidity, color, and food safety. These quality improvements allow winemakers to produce innovative and differentiated wines. For that reason, the yeast strains Torulaspora delbrueckii, Lachancea thermotolerans, Metschnikowia pulcherrima, Schizosaccharomyces pombe, and Pichia kluyveri are now available on the market. Other interesting species, such as Starmerella bacillaris, Meyerozyma guilliermondii, Hanseniospora spp., and others, will probably be available in the near future.

scholarly journals Terpenoids in Grapes and Wines: Origin and Micrometabolism during the Vinification Process

2008 ◽  
Vol 3 (4) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Francisco M. Carrau ◽  
Eduardo Boido ◽  
Eduardo Dellacassa
Keyword(s):  
De Novo ◽  
Wine Yeast ◽  
Wine Quality ◽  
Bacterial Fermentation ◽  
Yeast Strains ◽  
Wine Composition ◽  
Metabolic Footprinting ◽  
Grape Varieties ◽  
Near Future ◽  
Further Development

Terpenoids, which are typical components of the essential oils of flowers and fruits, are also present as free and glycosylated conjugates amongst the secondary metabolites of wine grape varieties of Vitis vinifera. Hence, when these compounds are present in wine, they are considered to originate from the grapes and not from fermentation. However, the biosynthesis of monoterpenes by Saccharomyces cerevisiae in the absence of grape derived precursors was shown recently to be of de novo origin in wine yeast strains. The contribution of yeast and bacterial fermentation metabolites to the aromatic profile of wine is well documented. However, the biotechnological application of this knowledge is still rather limited and often contradictory. Redox conditions, size of inoculums, temperatures of fermentation, osmotic pressure and the medium nutritional content can profoundly affect the profile of yeast and bacterial metabolites produced or their biotransformation capacity in wine. Results obtained in the last decades in relation to microbial micrometabolism of aroma compounds measured with more sophisticated GC-MS methods are discussed in relation to the known terpenoid biosynthetic pathways and wine composition. Further development of metabolic footprinting techniques for the discrimination of wine quality must be one of the main challenges for wine biotechnologists in the near future.

scholarly journals Pinus Species as Prospective Reserves of Bioactive Compounds with Potential Use in Functional Food—Current State of Knowledge

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1306
Author(s):  
Marcin Dziedziński ◽  
Joanna Kobus-Cisowska ◽  
Barbara Stachowiak
Keyword(s):  
Human Health ◽  
Bioactive Compounds ◽  
Functional Food ◽  
Biological Activities ◽  
Food Ingredients ◽  
Beneficial Effects ◽  
Pine Tree ◽  
Pine Trees ◽  
Health Promoting ◽  
Few Data

The pine (Pinus L.) is the largest and most heteromorphic plant genus of the pine family (Pinaceae Lindl.), which grows almost exclusively in the northern hemisphere. The demand for plant-based remedies, supplements and functional food is growing worldwide. Although pine-based products are widely available in many parts of the world, they are almost absent as food ingredients. The literature shows the beneficial effects of pine preparations on human health. Despite the wide geographical distribution of pine trees in the natural environment, there are very few data in the literature on the widespread use of pine in food technology. This study aims to present, characterise and evaluate the content of phytochemicals in pine trees, including shoots, bark and conifer needles, as well as to summarise the available data on their health-promoting and functional properties, and the potential of their use in food and the pharmaceutical industry to support health. Various species of pine tree contain different compositions of bioactive compounds. Regardless of the solvent, method, pine species and plant part used, all pine extracts contain a high number of polyphenols. Pine tree extracts exhibit several described biological activities that may be beneficial to human health. The available examples of the application of pine elements in food are promising. The reuse of residual pine elements is still limited compared to its potential. In this case, it is necessary to conduct more research to find and develop new products and applications of pine residues and by-products.

scholarly journals Grapes and Their Derivatives in Functional Foods

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 672
Author(s):  
Panagiotis Kandylis
Keyword(s):  
Human Health ◽  
Functional Foods ◽  
Consumer Interest ◽  
Health Promoting

Consumer interest in the consumption of health promoting foods is growing worldwide due to the realization of the link between diet and human health [...]

scholarly journals Kombucha Tea—A Double Power of Bioactive Compounds from Tea and Symbiotic Culture of Bacteria and Yeasts (SCOBY)

Antioxidants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1541
Author(s):  
Hubert Antolak ◽  
Dominik Piechota ◽  
Aleksandra Kucharska
Keyword(s):  
Bioactive Compounds ◽  
Biological Activities ◽  
Alcoholic Beverage ◽  
Antimicrobial Properties ◽  
Bioactive Compound ◽  
Acetic Acid Bacteria ◽  
Kombucha Tea ◽  
Health Promoting ◽  
Fermentation Parameters ◽  
Herb Extracts

Kombucha is a low alcoholic beverage with high content of bioactive compounds derived from plant material (tea, juices, herb extracts) and metabolic activity of microorganisms (acetic acid bacteria, lactic acid bacteria and yeasts). Currently, it attracts an increasing number of consumers due to its health-promoting properties. This review focuses on aspects significantly affecting the bioactive compound content and biological activities of Kombucha tea. The literature review shows that the drink is characterized by a high content of bioactive compounds, strong antioxidant, and antimicrobial properties. Factors that substantially affect these activities are the tea type and its brewing parameters, the composition of the SCOBY, as well as the fermentation parameters. On the other hand, Kombucha fermentation is characterized by many unknowns, which result, inter alia, from different methods of tea extraction, diverse, often undefined compositions of microorganisms used in the fermentation, as well as the lack of clearly defined effects of microorganisms on bioactive compounds contained in tea, and therefore the health-promoting properties of the final product. The article indicates the shortcomings in the current research in the field of Kombucha, as well as future perspectives on improving the health-promoting activities of this fermented drink.

scholarly journals Health-Promoting Phytonutrients Are Higher in Grass-Fed Meat and Milk

2021 ◽  
Vol 4 ◽  
Author(s):  
Stephan van Vliet ◽  
Frederick D. Provenza ◽  
Scott L. Kronberg
Keyword(s):  
Human Health ◽  
Current Knowledge ◽  
Red Meat ◽  
Future Research ◽  
Dairy Consumption ◽  
Nutrient Density ◽  
Nutritional Guidelines ◽  
Health Promoting ◽  
Anti Oxidant ◽  
Anti Inflammatory

While commission reports and nutritional guidelines raise concerns about the effects of consuming red meat on human health, the impacts of how livestock are raised and finished on consumer health are generally ignored. Meat and milk, irrespective of rearing practices, provide many essential nutrients including bioavailable protein, zinc, iron, selenium, calcium, and/or B12. Emerging data indicate that when livestock are eating a diverse array of plants on pasture, additional health-promoting phytonutrients—terpenoids, phenols, carotenoids, and anti-oxidants—become concentrated in their meat and milk. Several phytochemicals found in grass-fed meat and milk are in quantities comparable to those found in plant foods known to have anti-inflammatory, anti-carcinogenic, and cardioprotective effects. As meat and milk are often not considered as sources of phytochemicals, their presence has remained largely underappreciated in discussions of nutritional differences between feedlot-fed (grain-fed) and pasture-finished (grass-fed) meat and dairy, which have predominantly centered around the ω-3 fatty acids and conjugated linoleic acid. Grazing livestock on plant-species diverse pastures concentrates a wider variety and higher amounts of phytochemicals in meat and milk compared to grazing monoculture pastures, while phytochemicals are further reduced or absent in meat and milk of grain-fed animals. The co-evolution of plants and herbivores has led to plants/crops being more productive when grazed in accordance with agroecological principles. The increased phytochemical richness of productive vegetation has potential to improve the health of animals and upscale these nutrients to also benefit human health. Several studies have found increased anti-oxidant activity in meat and milk of grass-fed vs. grain-fed animals. Only a handful of studies have investigated the effects of grass-fed meat and dairy consumption on human health and show potential for anti-inflammatory effects and improved lipoprotein profiles. However, current knowledge does not allow for direct linking of livestock production practices to human health. Future research should systematically assess linkages between the phytochemical richness of livestock diets, the nutrient density of animal foods, and subsequent effects on human metabolic health. This is important given current societal concerns about red meat consumption and human health. Addressing this research gap will require greater collaborative efforts from the fields of agriculture and medicine.

Sign in / Sign up

Export Citation Format

Share Document