Influence of nitrogen on the biological aging of sherry wine

2006 ◽  
Vol 86 (13) ◽  
pp. 2113-2118 ◽  
Author(s):  
Teresa M Berlanga ◽  
Carmen Millán ◽  
Juan C Mauricio ◽  
José M Ortega
Keyword(s):  
Biological Aging ◽  
Sherry Wine

scholarly journals Analytical and Chemometric Characterization of Fino and Amontillado Sherries during Aging in Criaderas y Solera System

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 365
Author(s):  
Manuel J. Valcárcel-Muñoz ◽  
María Guerrero-Chanivet ◽  
María del Carmen Rodríguez-Dodero ◽  
María de Valme García-Moreno ◽  
Dominico A. Guillén-Sánchez
Keyword(s):  
Aging Process ◽  
Hierarchical Cluster ◽  
Biological Aging ◽  
Microbiological Activity ◽  
Dry Extract ◽  
Oxidative Aging ◽  
Physical Chemical ◽  
Sherry Wine ◽  
Flor Yeasts

Fino and Amontillado are Sherry wines, produced in Marco de Jerez area (southern Spain), and aged in Criaderas y Solera system. Fino Sherry wine follows a biological aging process, under a veil of flor yeasts, while Amontillado Sherry wine shares the same biological aging firstly, followed by oxidative aging, which gives them special features. Organic acids, esters, higher alcohols, phenolic compounds and total dry extract of Sherries evolve during aging due to evaporation processes, physical-chemical reactions, wood contributions and microbiological activity. During aging, Sherry wines improve their organoleptic profile, as could be proved in the tasting sessions. Hierarchical Cluster Analysis and Factor Analysis with factor extraction using Principal Components of Sherry wines studied were carried out and natural groupings of the wines according to the type of aging and their age were observed. A strong correlation between the parameters analyzed and the aging of each wine has been seen in the Multiple Linear Regression studies, establishing two different models, one for each type of Sherry wine, that, with only four of all the variables studied estimated the wine age with more than 99% of confidence. This constitutes a useful tool to control the age of these Sherry wines in the winery.

scholarly journals Enological Behaviour of Biofilms Formed by Genetically-Characterized Strains of Sherry Yeast

2013 ◽  
Vol 7 (1) ◽  
pp. 23-29 ◽  
Author(s):  
María E. Rodríguez ◽  
Juan J. Infante ◽  
Juan J. Mesa ◽  
Laureana Rebordinos ◽  
Jesús M. Cantoral
Keyword(s):  
Wine Industry ◽  
Biological Aging ◽  
Yeast Strains ◽  
Sherry Wine ◽  
Flor Yeast ◽  
Film Forming ◽  
Pure Cultures ◽  
Biofilm Development ◽  
Kinetics Of ◽  
Strain Dependent

The flor yeasts (Saccharomyces cerevisiae) form a biofilm, known as flor velum, on the surface of fino-type sherry wine at the end of the alcoholic fermentation. These film-forming yeasts are responsible for the oxidative transformation of alcohol to acetaldehyde, together with other reactions, which produce the characteristic flavours and aromas of these wines. In this study, we examine the enological behaviour of eight flor yeast strains biofilms in biological aging experiments carried out in the laboratory. Strains with identical chromosomal and mitochondrial DNA patterns and the same origin showed a more closely-related enological behaviour. But the kinetics of growth and acetaldehyde accumulation in the wine were found to be strain-dependent. Moreover, some strains were marked by high acetaldehyde accumulation in their pure cultures during the various phases of the biofilm development. These results provide valuable knowledge for planning technical strategies to improve the biological aging process in the sherry wine industry.

scholarly journals Yeast Population Dynamics during the Fermentation and Biological Aging of Sherry Wines

2001 ◽  
Vol 67 (5) ◽  
pp. 2056-2061 ◽  
Author(s):  
B. Esteve-Zarzoso ◽  
M. J. Peris-Torán ◽  
E. Garcı́a-Maiquez ◽  
F. Uruburu ◽  
A. Querol
Keyword(s):  
Population Dynamics ◽  
Alcoholic Fermentation ◽  
Specific Pattern ◽  
Internal Transcribed Spacers ◽  
Biological Aging ◽  
Rrna Gene ◽  
Native Strain ◽  
Yeast Population ◽  
Sherry Wine ◽  
Wine Aging

ABSTRACT Molecular and physiological analyses were used to study the evolution of the yeast population, from alcoholic fermentation to biological aging in the process of “fino” sherry wine making. The four races of “flor” Saccharomyces cerevisiae (beticus, cheresiensis, montuliensis, and rouxii) exhibited identical restriction patterns for the region spanning the internal transcribed spacers 1 and 2 (ITS-1 and ITS-2) and the 5.8S rRNA gene, but this pattern was different, from those exhibited by non-florS. cerevisiae strains. This flor-specific pattern was detected only after wines were fortified, never during alcoholic fermentation, and all the strains isolated from the velum exhibited the typical flor yeast pattern. By restriction fragment length polymorphism of mitochondrial DNA and karyotyping, we showed that (i) the native strain is better adapted to fermentation conditions than commercial strains; (ii) two different populations of S. cerevisiaestrains are involved in the process of elaboration, of fino sherry wine, one of which is responsible for must fermentation and the other, for wine aging; and (iii) one strain was dominant in the flor population integrating the velum from sherry wines produced in González Byass wineries, although other authors have described a succession of races of flor S. cerevisiae during wine aging. Analyzing all these results together, we conclude that yeast population dynamics during biological aging is a complex phenomenon and differences between yeast populations from different wineries can be observed.

Biological age and rates of aging of patients with vibration disease and bilateral sensorineural hearing loss

2020 ◽  
pp. 624-624
Author(s):  
S. I. Ereniev ◽  
O. V. Plotnikova
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Sensorineural Hearing ◽  
Biological Age ◽  
Biological Aging ◽  
Vibration Disease ◽  
Bilateral Sensorineural Hearing Loss

Biological age and rates of aging of patients with vibration disease and bilateral sensorineural hearing loss were studied. The biological age of patients exceeded the calendar age by an average of 7.36±0.36 years and the proper biological age by 10.79±0.72 years. The rate of biological aging of the examined patients was 1.14±0.08 times higher than the rate of aging of their healthy peers.

scholarly journals Genome-wide association studies identify 137 genetic loci for DNA methylation biomarkers of aging

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Daniel L. McCartney ◽  
Josine L. Min ◽  
Rebecca C. Richmond ◽  
Ake T. Lu ◽  
Maria K. Sobczyk ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Genome Wide Association Study ◽  
Association Studies ◽  
Genome Wide Association ◽  
Biological Aging ◽  
Genome Wide Association Studies ◽  
Genetic Loci ◽  
Biomarkers Of Aging ◽  
Genome Wide ◽  
Shared Genetic

Abstract Background Biological aging estimators derived from DNA methylation data are heritable and correlate with morbidity and mortality. Consequently, identification of genetic and environmental contributors to the variation in these measures in populations has become a major goal in the field. Results Leveraging DNA methylation and SNP data from more than 40,000 individuals, we identify 137 genome-wide significant loci, of which 113 are novel, from genome-wide association study (GWAS) meta-analyses of four epigenetic clocks and epigenetic surrogate markers for granulocyte proportions and plasminogen activator inhibitor 1 levels, respectively. We find evidence for shared genetic loci associated with the Horvath clock and expression of transcripts encoding genes linked to lipid metabolism and immune function. Notably, these loci are independent of those reported to regulate DNA methylation levels at constituent clock CpGs. A polygenic score for GrimAge acceleration showed strong associations with adiposity-related traits, educational attainment, parental longevity, and C-reactive protein levels. Conclusion This study illuminates the genetic architecture underlying epigenetic aging and its shared genetic contributions with lifestyle factors and longevity.

scholarly journals Disparities in the pace of biological aging among midlife adults of the same chronological age have implications for future frailty risk and policy

Nature Aging ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 295-308 ◽  
Author(s):  
Maxwell L. Elliott ◽  
Avshalom Caspi ◽  
Renate M. Houts ◽  
Antony Ambler ◽  
Jonathan M. Broadbent ◽  
...  
Keyword(s):  
Chronological Age ◽  
Biological Aging ◽  
Midlife Adults

scholarly journals A Comprehensive, Multidisciplinary, Personalized, Lifestyle Intervention Program is Associated with Increased Leukocyte Telomere Length in Children and Adolescents with Overweight and Obesity

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2682
Author(s):  
George Paltoglou ◽  
Christina Raftopoulou ◽  
Nicolas C. Nicolaides ◽  
Sofia M. Genitsaridi ◽  
Sofia I. Karampatsou ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Telomere Length ◽  
Lifestyle Intervention ◽  
Intervention Program ◽  
Overweight And Obesity ◽  
Initial Assessment ◽  
Biological Aging ◽  
Childhood And Adolescence ◽  
Lifestyle Interventions ◽  
Lifestyle Intervention Program

Leucocyte telomere length (LTL) is a robust marker of biological aging and is associated with obesity and cardiometabolic risk factors in childhood and adolescence. We investigated the effect of a structured, comprehensive, multidisciplinary, personalized, lifestyle intervention program of healthy diet and physical exercise on LTL in 508 children and adolescents (239 males, 269 females; 282 prepubertal, 226 pubertal), aged 10.14 ± 0.13 years. Participants were classified as obese (n = 267, 52.6%), overweight (n = 174, 34.2%), or of normal BMI (n = 67, 13.2%) according to the International Obesity Task Force (IOTF) cutoff points and were studied prospectively for one year. We demonstrated that LTL increased significantly after 1 year of the lifestyle interventions, irrespective of gender, pubertal status, or body mass index (BMI). Waist circumference was the best negative predictor of LTL at initial assessment. The implementation of the lifestyle interventions also resulted in a significant improvement in clinical (BMI, BMI z-score and waist to height ratio) and body composition indices of obesity, inflammatory markers, hepatic enzymes, glycated hemoglobin (HbA1C), quantitative insulin sensitivity check index (QUICKI), and lipid profile in all participants. These findings indicate that the increased LTL may be associated with a more favorable metabolic profile and decreased morbidity later in life.

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