scholarly journals Contribution of Non-Saccharomyces Yeasts to Wine Freshness. A Review

Biomolecules ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 34 ◽  
Author(s):  
Antonio Morata ◽  
Carlos Escott ◽  
María Bañuelos ◽  
Iris Loira ◽  
Juan del Fresno ◽  
...  
Keyword(s):  
Emerging Technologies ◽  
Yeast Strains ◽  
The Right ◽  
Saccharomyces Yeasts ◽  
Selection Of

Freshness, although it is a concept difficult to define in wines, can be understood as a combination of different circumstances. Organolepticwise, bluish red, floral and fruity, more acidic and full-bodied wines, are perceived as younger and fresher by consumers. In traditional winemaking processes, these attributes are hard to boost if no other technology or biotechnology is involved. In this regard, the right selection of yeast strains plays an important role in meeting these parameters and obtaining wines with fresher profiles. Another approach in getting fresh wines is through the use of novel non-thermal technologies during winemaking. Herein, the contributions of non-Saccharomyces yeasts and emerging technologies to these parameters are reviewed and discussed.

scholarly journals SELECTION OF AUTOCHThONOUS sACCHAROMYCES AND NON-sACCHAROMYCES YEASTS STRAINS ACCORDING TO THEIR EXTRACELLULAR ENZIMATIC ACTIVITY

2020 ◽  
Vol 1 (1) ◽  
pp. 119-124
Author(s):  
Elena Brȋnduşe ◽  
Marian Ion ◽  
Cǎtǎlina Loredana Nedelcu ◽  
Lidia Fȋciu ◽  
Adrian Pantazi
Keyword(s):  
Protease Activity ◽  
Extracellular Enzymes ◽  
Secondary Compounds ◽  
Wine Production ◽  
Selective Media ◽  
Yeast Strains ◽  
Intense Activity ◽  
Saccharomyces Yeasts ◽  
Selection Of

The aim of the present study was to investigate the production of extracellular enzymes in a number of twenty six autochtonous Saccharomyces and nonSaccharomyces strains selected in Dealu Mare region for wine production. The strains were screened for the production of extracellular b-glucosidase, esterase, pectinase and protease activity by inoculation the yeast strains onto selective media. All Saccharomyces tested strains showed at least two enzymatic activities while nonSaccharomyces strains showed activity at least for one enzyme. The weakest activity was recorded in case of β-glucosidase. Most of the tested strains exhibit more or less intense activity for polygalacturonase/pectinase and protease. This study put into evidence the potential of autochtonous and especially of non-Saccharomyces strains as source of production of secondary compounds which can play an important role in improving the quality of wines.

scholarly journals Selection of Yeast Strains for Ethanol Fermentation of Glucose-FructoseSucrose Mixture

2015 ◽  
Vol 17 (2) ◽  
pp. 114 ◽  
Author(s):  
J. Jasman ◽  
Irfan Dwidya Prijambada ◽  
Chusnul Hidayat ◽  
Donny Widianto
Keyword(s):  
Mixed Culture ◽  
Ethanol Fermentation ◽  
Substrate Consumption ◽  
Mixed Substrate ◽  
Strain Capacity ◽  
Yeast Strains ◽  
The Right ◽  
Selection Of

This study was aimed to compare the ability of some yeast strains to consume sugars (sucrose, glucoseand fructose) and to convert them into ethanol during fermentation. The results of this comparison will be thebasis of considerations in choosing the right strain to be used as a mixed culture to increase the productionof ethanol from substrate containing a mixture of sucrose, glucose and fructose, such as juice of cane andsweet sorghum. The study was conducted using fermentation in substrate consisting of glucose, fructose,and sucrose separately, glucose-fructose mixture, and glucose-fructose-sucrose mixture using some yeaststrains: FNCC3012, OUT7009, OUT7027, OUT7055, OUT7080, OUT7096, OUT7903, OUT7913, and OUT7921.Following the fermentation, analysis of the produced ethanol and the remaining sugar was conducted. Theresults of study indicated that the strains with the highest substrate consumption were OUT7921, OUT7096,OUT7055, OUT7027, and OUT7913 for glucose, fructose, glucose-fructose mixture, sucrose, and glucosefructose-sucrose mixture, respectively. Strains that produced highest concentration ethanol were OUT7096 inglucose and sucrose substrates, OUT7921 in substrate of glucose-fructose mixture and sucrose, OUT7913 insubstrate of glucose-fructose-sucrose mixture. Upon consideration of each strain capacity, both in consumingsugar and producing ethanol, the recommended strains for use in mixed culture in bioethanol fermentationusing mixed substrate of glucose, fructose and sucrose are OUT7096, OUT7913, and OUT7921.

scholarly journals Wine Saccharomyces Yeasts for Beer Fermentation

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 290
Author(s):  
Vanesa Postigo ◽  
Margarita García ◽  
Juan Mariano Cabellos ◽  
Teresa Arroyo
Keyword(s):  
Higher Alcohols ◽  
Beer Fermentation ◽  
Commercial Strain ◽  
Yeast Strains ◽  
Consumer Study ◽  
Apparent Attenuation ◽  
Melatonin Production ◽  
Craft Beers ◽  
Saccharomyces Yeasts ◽  
Selection Of

Multiple studies in recent years have shown the potential of Saccharomyces wild yeasts to produce craft beers with new flavour profiles and other desirable properties. Yeasts isolated from food (wine, bread, kombucha…) have shown potential promise for application in brewing. The aim of this study is to evaluate the ability of 141 Saccharomyces yeast strains isolated from the Madrilenian agriculture (from grapes, must, wine, vineyard, and cellars) to produce a novel ale beer. Fermentation activity of the strains was compared against the commercial strain Saccharomyces cerevisiae Safale S-04. In addition to the other aspects such as melatonin production, thirty-three volatile compounds belonging to higher alcohols, esters, aldehydes/cetones, acids, lactones and phenolic groups, were analysed by GC for selection of the strains. Ten strains were finally chosen, among which the most relevant was the strain G 520 showing a higher production of esters, higher alcohols and acids compared with S-04. The apparent attenuation for this strain was lower than commercial strain, which translates into more residual sugars. Furthermore, G 520 was more capable of producing significantly higher amounts of melatonin studied by HPLC, as well as showing a higher antioxidant capacity. Consumer study showed that G 520 strain could be used to produce a potential beer that has a place in the current market.

PROBLEM ASPECTS OF THE IMPLEMENTATION OF CRIMINAL PROCEDURAL NORMS OF PROTECTION OF THE VICTIMS FROM CRIME

2020 ◽  
pp. 72-76
Author(s):  
Яна Валерьевна Самиулина
Keyword(s):  
Preventive Measure ◽  
Criminal Procedure ◽  
Legal Rights ◽  
Criminal Proceedings ◽  
Effective Mechanism ◽  
The Russian Federation ◽  
The Individual ◽  
The Right ◽  
To Receive ◽  
Selection Of

В настоящей статье предпринята попытка исследовать отдельные проблемные аспекты института потерпевшего в российском уголовном процессе. В этих целях подвергнуты анализу правовые нормы, регламентирующие его процессуальный статус. Раскрываются отдельные пробелы уголовно-процессуального законодательства в сфере защиты законных прав и интересов потерпевшего. Автор акцентирует внимание на том, что совершенствование уголовно-процессуального законодательства в части расширения правомочий потерпевшего по отстаиванию своих нарушенных преступлением прав следует продолжить. На основании проведенного исследования действующего законодательства в части регламентации прав потерпевшего от преступления предлагается расширить перечень получаемых им копий постановлений, указанных в п. 13 ч. 2 ст. 42 УПК РФ. Автор предлагает включить в перечень указанной законодательной нормы право получения потерпевшим копии постановления об избрании конкретного вида меры пресечения, избранного в отношении подозреваемого (обвиняемого). Для создания действенного механизма защиты интересов потерпевших от преступления юридических лиц предлагаем ч. 9 ст. 42 УПК РФ изложить в следующей редакции: «в случае признания потерпевшим юридического лица его процессуальное право в уголовном процессе осуществляет представляющий его профессиональный адвокат». This article attempts to investigate certain problematic aspects of the institution of the victim in the Russian criminal process. For this purpose, analyzed the individual norms governing his procedural status. Separate gaps of the criminal procedure legislation in the sphere of protection of the legal rights and interests of the victim are disclosed. The author emphasizes that the improvement of the criminal procedure legislation in terms of the extension of the victim’s authority to defend his rights violated by the crime should be continued. On the basis of the study of the current legislation regarding the regulation of the rights of the victim of a crime, it is proposed to expand the list of decisions received by him, referred to in paragraph 13, part 2 of article 42 Code of Criminal Procedure. The author proposes to include in the list of the indicated legislative norm the right to receive the victim a copy of the decision on the selection of a specific type of preventive measure, selected in relation to the suspect (accused). To create an effective mechanism for protecting the interests of legal entities victims of a crime, we offer part 9 of art. 42 of the Code of Criminal Procedure of the Russian Federation shall be reworded as follows: «if a legal entity is recognized as a victim, his procedural right in criminal proceedings is exercised by the professional lawyer representing him».

scholarly journals The Impact of Alkaloid-Producing Epichloë Endophyte on Forage Ryegrass Breeding: A New Zealand Perspective

Toxins ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 158
Author(s):  
Colin Eady
Keyword(s):  
Seed Production ◽  
Health Issues ◽  
Abiotic Stressors ◽  
Livestock Health ◽  
The Right ◽  
The Impact ◽  
The Relationship ◽  
And Storage ◽  
Selection Of ◽  
Epichloë Endophyte

For 30 years, forage ryegrass breeding has known that the germplasm may contain a maternally inherited symbiotic Epichloë endophyte. These endophytes produce a suite of secondary alkaloid compounds, dependent upon strain. Many produce ergot and other alkaloids, which are associated with both insect deterrence and livestock health issues. The levels of alkaloids and other endophyte characteristics are influenced by strain, host germplasm, and environmental conditions. Some strains in the right host germplasm can confer an advantage over biotic and abiotic stressors, thus acting as a maternally inherited desirable ‘trait’. Through seed production, these mutualistic endophytes do not transmit into 100% of the crop seed and are less vigorous than the grass seed itself. This causes stability and longevity issues for seed production and storage should the ‘trait’ be desired in the germplasm. This makes understanding the precise nature of the relationship vitally important to the plant breeder. These Epichloë endophytes cannot be ‘bred’ in the conventional sense, as they are asexual. Instead, the breeder may modulate endophyte characteristics through selection of host germplasm, a sort of breeding by proxy. This article explores, from a forage seed company perspective, the issues that endophyte characteristics and breeding them by proxy have on ryegrass breeding, and outlines the methods used to assess the ‘trait’, and the application of these through the breeding, production, and deployment processes. Finally, this article investigates opportunities for enhancing the utilisation of alkaloid-producing endophytes within pastures, with a focus on balancing alkaloid levels to further enhance pest deterrence and improving livestock outcomes.

Compressed acoustic sealing foam optimization investigation using statistical approach

2021 ◽  
Vol 263 (1) ◽  
pp. 4955-4961
Author(s):  
Mathieu Gontier ◽  
Barbara Romeyns
Keyword(s):  
Porous Materials ◽  
Statistical Approach ◽  
Complete System ◽  
Statistical Techniques ◽  
Industrial Equipment ◽  
Acoustic Performance ◽  
Material Characteristics ◽  
Sealing Performance ◽  
The Right ◽  
Selection Of

In industry segments such as automotive and industrial equipment the use of compressed porous materials is well known to improve the global acoustic performance of the complete system. Such porous materials should be designed in a specific way in order to reach a significant acoustic sealing performance at different compression rates. Unfortunately, there are no standard measurement procedures nor predefined material characteristics that allow the selection of the right material with the optimal acoustic performance. The main goal of this research is to link acoustic performance of compressed porous materials with intrinsic material characteristics using statistical techniques.

A Spectral Optimization Algorithm for Multi-Objective Prototype Selection

1995 ◽  
Author(s):  
Andy Dong ◽  
Alice M. Agogino
Keyword(s):  
Optimization Algorithm ◽  
Parametric Design ◽  
Selection Process ◽  
Objective Evaluation ◽  
Design Synthesis ◽  
Multi Objective ◽  
Trade Offs ◽  
Spectral Optimization ◽  
The Right ◽  
Selection Of

Abstract In design synthesis, engineering prototypes make an ideal representation medium for preliminary designs. Unlike parametric design wherein a pre-specified design is parametrically varied, design synthesis demands artistic creativity and engineering experience to transform the previously known components, relationships and designs into a new form. The process compels the designer to ascertain which prototypes will, in some sense, best satisfy the design task. The challenge in this assignment lies in selecting the “right” design prototype. This selection process typically entails an objective evaluation of different designs that perform the same functions or have similar intended behavior and comparing trade-offs between alternate designs. This paper introduces a multi-objective spectral optimization algorithm for the selection of design prototypes based upon their functional representations. The optimization algorithm returns an index of rank, scoring the functional similarity of the proposed design to the goal design. Two illustrative examples apply the algorithm to the selection of a heat fin and beam.

Prophylaxis of obstetric and perinatal pathology at women with pathological increase of body weight during pregnancy

2018 ◽  
pp. 7-79
Author(s):  
S.Yu. Vdovichenko ◽  
◽  
T.D. Fakhrutdinova ◽  
Keyword(s):  
Health Care ◽  
Body Weight ◽  
Pregnant Women ◽  
Key Words ◽  
Perinatal Outcomes ◽  
Perinatal Complications ◽  
Perinatal Pathology ◽  
Fetoplacental Complex ◽  
The Right ◽  
Selection Of

The objective: depression of obstetric and perinatal complications at pregnant women with pathological increase of body weight during pregnancy on the basis of studying of clinical-functional, endocrinologic, metabolic, morphological features of condition of fetoplacental complex and development of advanced algorithm of treatment-and-prophylactic actions. Materials and methods. We conducted examination of 264 patients who consisted on the account concerning pregnancy in female consultations of Kiev. By a method of selection of 178 women were included in retrospective research and 86 – in prospective. The main group was made by 39 pregnant women with whom led individual discussions, control – 142 women, that received traditional references in female consultation. Results. Use of the algorithm improved by us allows to improve obstetric (decrease of frequency of a preeclampsia by 12.3%; anomalies of a patrimonial deyalnost for 8.4%) and perinatal outcomes (depression of level of an asphyxia at a delivery for 9.4% and post-natal adaptation for 7.8%) deliveries of women with an excessive increase of body weight during pregnancy. Conclusion. The received results grant the right to recommend the algorithm improved by us for wide use in practical health care. Key words: obstetric and perinatal pathology, pathological increase of body weight, prophylaxis.

scholarly journals Identification and selection of non-Saccharomyces strains isolate from brazilian apple must

2018 ◽  
Vol 48 (5) ◽  
Author(s):  
Giovana Arruda Moura Pietrowski ◽  
Juliana Vitória Messias Bittencourt ◽  
Luciana Rocha Brandão ◽  
Carlos Augusto Rosa ◽  
Aline Alberti ◽  
...  
Keyword(s):  
Candida Parapsilosis ◽  
Pichia Anomala ◽  
Pcr Analysis ◽  
Hanseniaspora Uvarum ◽  
Candida Oleophila ◽  
Aroma Production ◽  
Fuji Apple ◽  
Saccharomyces Yeasts ◽  
Selection Of

ABSTRACT: This study aimed to know the biodiversity of non-Saccharomyces yeasts in Brazilian apples must with potential to improve of the aromatic quality of ciders. The strains were isolated from thirty-five (35) Gala and Fuji apple musts from different locations from south region of Brazil. Forty-five (45) strains were isolate and identified by PCR analysis. Results indicated ten (10) species: Candida oleophila, Candida parapsilosis, Candida tropicalis, Clavispora lusitaniae, Hanseniaspora guilliermondii, Hanseniaspora uvarum, Lodderomyces elongisporus, Pichia anomala, Pichia fermentans and Rhodotorula mucilaginosa. The genus Rhodotorula sp., Lodderomyces sp. and Clavispora sp. constituted 71.2% of the strains identified. The following strains, C. oleophila, R. mucilaginosa, P. fermentans, H. uvarum and H. guilliermondii were selected in qualitative tests due the fruity aroma production by trained team in the aromatic assessment of cider.

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