184 research outputs found
Effect of interspecific yeast hybrids for secondary in-bottle alcoholic fermentation of English sparkling wines
No full textAIM: In sparkling winemaking several yeasts can be used to perform the primary alcoholic fermentation that leads to the elaboration of the base wine. However, only a few Saccharomyces cerevisiae yeast strains are regularly used for the secondary in-bottle alcoholic fermentation 1. Recently, advances in yeast development programs have resulted in new breeds of interspecific wine yeast hybrids that ferment efficiently while producing novel flavours and aromas 2. In this work, sparkling wines produced using interspecific yeast hybrids for the secondary in-bottle alcoholic fermentation have been chemically and sensorially characterized.
METHODS: Three commercial English base wines have been prepared for secondary in-bottle alcoholic fermentation with different yeast strains, including two commercial and several novel interspecific hybrids derived from Saccharomyces species not traditionally used in sparkling winemaking. After 12 months of lees ageing, the 14 wines produced were analysed for their chemical and macromolecular composition 3,4, phenolic profile 5, foaming and viscosity properties [6]. The analytical data were supplemented with a sensory analysis.
RESULTS: The use of different strains on the three base wines resulted in differences in macromolecular content and sensory characteristics of wines. The foamability was mostly unaffected by the strain used, however some effect on foam stability was noticeable, likely due to the differences in polysaccharides released into the wines by the yeast strains. Chemically, the yeast strains did not result in significant differences upon on the main wine parameters, while the wines exhibited different sensory characteristics in terms of effervescence and pleasantness.
CONCLUSIONS: Novel interspecific yeast hybrids can be used for the elaboration of sparkling wines as they provided wines with novel flavour and aroma attributes which affected sensory characteristics while retaining wine chemical characteristics similar to those of commonly used commercial Saccharomyces cerevisiae strains
Effect of Interspecific Yeast Hybrids for Secondary In-Bottle Alcoholic Fermentation of English Sparkling Wines
No full textIn sparkling winemaking, only a few yeast strains are regularly used for the secondary in-bottle alcoholic fermentation (SiBAF). Recently, advances in yeast development programs have yielded new breeds of interspecific wine yeast hybrids that ferment efficiently while producing novel flavors and aromas. In this work, the chemical and sensorial impacts of the use of interspecific yeast hybrids for SiBAF were studied using three commercial English base wines prepared for SiBAF using two commercial and four novel interspecific hybrids. After 12 months of lees aging, the chemical and macromolecular composition, phenolic profile, foaming, viscosity and sensory properties of the resulting 13 wines were assessed. Chemically, the yeast strains did not result in significant differences in the main wine parameters, while some differences in their macromolecular contents and sensory characteristics were noticeable. The foamability was mostly unaffected by the strain used; however, some effect on the foam stability was noticeable, likely due to the differences in polysaccharides released into the wines by the yeast strains. The wines exhibited different sensory characteristics in terms of aroma and bouquet, balance, finish, overall liking and preference, but these were mostly attributable to the differences in the base wines rather than the strain used for SiBAF. Novel interspecific yeast hybrids can be used for the elaboration of sparkling wines, as they provided wines with chemical characteristics, flavor and aroma attributes similar to those of commonly used commercial Saccharomyces cerevisiae strains
John Robert Seeley, natural religion, and the Victorian conflict between science and religion
No full textThis essay examines the publishing and reception of J. R. Seeley’s Natural Religion (1882), a book that sought to bring about a reconciliation between science and religion. While Natural Religion has long been overlooked, it is argued that its reception gives us insight into changing views about the relationship between science and religion in the late Victorian period. The essay also explores how the reception of the book was conditioned by its bibliographic lineage as it was signed not by Seeley, but “by the Author of Ecce Homo.
The general population cohort in rural south-western Uganda: a platform for communicable and non-communicable disease studies.
No full textThe General Population Cohort (GPC) was set up in 1989 to examine trends in HIV prevalence and incidence, and their determinants in rural south-western Uganda. Recently, the research questions have included the epidemiology and genetics of communicable and non-communicable diseases (NCDs) to address the limited data on the burden and risk factors for NCDs in sub-Saharan Africa. The cohort comprises all residents (52% aged ≥13years, men and women in equal proportions) within one-half of a rural sub-county, residing in scattered houses, and largely farmers of three major ethnic groups. Data collected through annual surveys include; mapping for spatial analysis and participant location; census for individual socio-demographic and household socioeconomic status assessment; and a medical survey for health, lifestyle and biophysical and blood measurements to ascertain disease outcomes and risk factors for selected participants. This cohort offers a rich platform to investigate the interplay between communicable diseases and NCDs. There is robust infrastructure for data management, sample processing and storage, and diverse expertise in epidemiology, social and basic sciences. For any data access enquiries you may contact the director, MRC/UVRI, Uganda Research Unit on AIDS by email to [email protected] or the corresponding author
Connections Volume 11, Number 1, Fall 2000
No full textFeatured articles:
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New ophthalmosaurid ichthyosaurs from the European lower cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary
No full textBackground
Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one during the latest Triassic, one at the Jurassic–Cretaceous boundary (JCB), and one (resulting in total extinction) at the Cenomanian-Turonian boundary. The JCB was believed to eradicate most of the peculiar morphotypes found in the Late Jurassic, in favor of apparently less specialized forms in the Cretaceous. However, the record of ichthyosaurs from the Berriasian–Barremian interval is extremely limited, and the effects of the end-Jurassic extinction event on ichthyosaurs remains poorly understood.
Methodology/Principal Findings
Based on new material from the Hauterivian of England and Germany and on abundant material from the Cambridge Greensand Formation, we name a new ophthalmosaurid, Acamptonectes densus gen. et sp. nov. This taxon shares numerous features with Ophthalmosaurus, a genus now restricted to the Callovian–Berriasian interval. Our phylogenetic analysis indicates that Ophthalmosauridae diverged early in its history into two markedly distinct clades, Ophthalmosaurinae and Platypterygiinae, both of which cross the JCB and persist to the late Albian at least. To evaluate the effect of the JCB extinction event on ichthyosaurs, we calculated cladogenesis, extinction, and survival rates for each stage of the Oxfordian–Barremian interval, under different scenarios. The extinction rate during the JCB never surpasses the background extinction rate for the Oxfordian–Barremian interval and the JCB records one of the highest survival rates of the interval.
Conclusions/Significance
There is currently no evidence that ichthyosaurs were affected by the JCB extinction event, in contrast to many other marine groups. Ophthalmosaurid ichthyosaurs remained diverse from their rapid radiation in the Middle Jurassic to their total extinction at the beginning of the Late Cretaceous
An Annotated Translation of Fred W . Seeley's “The Production of a Baxter Colour Print.”
No full textThis note is the Japanese translation of the full text of “The Production of a Baxter Colour Print.” by Fred W.
Seeley, with its bibliographical introduction. The text, which was initially published as a series of articles in
The Baxter Times from September 1924 to March 1925, provides an explanation of the Baxter process that
was invented and patented by George Baxter to amateurs and collectors. For many years the author Seeley
was responsible for overseeing the production of colour prints for J. M. Kronheim & Co., which was a licensee
of Baxter.repor
Taxes as they affect the rural taxpayer
No full textFebruary 1, 1928.Includes bibliographical references
Mabel Seely: The Development of Her Mysteries
No full textThis thesis is an analysis of Mabel Seeley\u27s nine mysteries, written between 1938 and 1957. The mysteries are: The Listening House, Girl Is Strangled (unpublished), The Crying Sisters, The Whispering Cup, The Chuckling Fingers , Eleven Came Back, The Beckoning Door, The Whistling Shadow, and Mischief Afoot (unpublished). The purpose of this analysis is to determine if there is a development in Seeley\u27s writing from mystery to mystery, and to see if a specific formula emerges in the mysteries. The method of evaluation consists of comparing and contrasting the mysteries with each other, looking at: the structure of plot, the uses of setting, the methods of characterization, the points of view, and the descriptive details. The basis for the comparisons and contrasts are the mysteries themselves, original manuscripts and working papers, critical reviews, and comments made by the author. In order to make the phases of Seeley\u27s mystery writing career clear, the books are dealt with in chronological order and grouped into three distinct stages: the first mysteries (1937-1938), the middle mysteries (1939 1943), and the last mysteries (1950-1957). The analysis of these mysteries indicates that a specific formula emerges in the first book written by Seeley. This pattern includes: an independent heroine, a localized setting, an abundant use of nature description, and first person narration, The second group of mysteries (1939-1943) most strongly adheres to this formula, while the last group of mysteries tends to be less consistent in following the pattern, The analysis also indicates that Seeley\u27s writing does not develop significantly during the first two stages of her mystery writing but that her two final mysteries, The Whistling Shadow and Mischief Afoot, do show a growth from the earlier works; The Whistling Shadow is less confined by the formula and Mischief Afoot shows a development away from that formula
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