Plans by Katherine Porikos for long-term studies of the role of caloric dilution in the control of human food intake

Appetite ◽  
1990 ◽  
Vol 14 (1) ◽  
pp. 62-63
Author(s):  
Henry S. Koopmans
Keyword(s):  
Food Intake ◽  
Human Food ◽  
Long Term Studies

Role of geochemical barriers in forming sulfide ores in various geological environments

2021 ◽  
pp. 63-73
Author(s):  
IRINA GABLINA
Keyword(s):  
Sulfide Ores ◽  
Atlantic Region ◽  
Geochemical Barriers ◽  
Sulfide Ore ◽  
Cupriferous Sandstone ◽  
Central Atlantic ◽  
Ore Types ◽  
Long Term Studies

Based on long-term studies of cupriferous sandstone and shale deposits, as well as deepsea sulfide ores, various types of geochemical barriers where sulfides form are shown. Cupriferous sandstones and shales form as metals precipitate from redbed reservoir waters on H2S geochemical barrier. Syngenetic and epigenetic barrier types are identified. Oceanic sulfide ores from the Central Atlantic region were studied; as a result, a new hydrothermal-metasomatic sediment-hosted mineralization type was found, along with previously known sulfide ore types (massive ores on the seafloor and stockwork ores in substrate rocks). Geochemical seafloor sulfide formation environments and those in biogenic carbonate bottom sediments are examined.

scholarly journals Exploring Associations between Interindividual Differences in Taste Perception, Oral Microbiota Composition, and Reported Food Intake

Nutrients ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1167 ◽  
Author(s):  
Camilla Cattaneo ◽  
Patrizia Riso ◽  
Monica Laureati ◽  
Giorgio Gargari ◽  
Ella Pagliarini
Keyword(s):  
Food Intake ◽  
Eating Habits ◽  
Saturated Fat ◽  
Sweet Taste ◽  
Oral Microbiome ◽  
Taste Perception ◽  
Oral Microbiota ◽  
Microbiota Composition

The role of taste perception, its relationship with oral microbiota composition, and their putative link with eating habits and food intake were the focus of the present study. A sample of 59 reportedly healthy adults (27 male, 32 female; age: 23.3 ± 2.6 years) were recruited for the study and taste thresholds for basic tastes, food intake, and oral microbiota composition were evaluated. Differences in taste perception were associated with different habitual food consumption (i.e., frequency) and actual intake. Subjects who were orally hyposensitive to salty taste reported consuming more bakery and salty baked products, saturated-fat-rich products, and soft drinks than hypersensitive subjects. Subjects hyposensitive to sweet taste reported consuming more frequently sweets and desserts than the hypersensitive group. Moreover, subjects hypersensitive to bitter taste showed higher total energy and carbohydrate intakes compared to those who perceived the solution as less bitter. Some bacterial taxa on tongue dorsum were associated with gustatory functions and with vegetable-rich (e.g., Prevotella) or protein/fat-rich diets (e.g., Clostridia). Future studies will be pivotal to confirm the hypothesis and the potential exploitation of oral microbiome as biomarker of long-term consumption of healthy or unhealthy diets.

The Role of Bioactive Compounds and other Metabolites from Mushrooms against Skin Disorders- A Systematic Review Assessing their Cosmeceutical and Nutricosmetic Outcomes

2020 ◽  
Vol 27 (41) ◽  
pp. 6926-6965
Author(s):  
Oludemi Taofiq ◽  
Maria Filomena Barreiro ◽  
Isabel C.F.R. Ferreira
Keyword(s):  
Systematic Review ◽  
Bioactive Compounds ◽  
Skin Diseases ◽  
Scientific Data ◽  
Inflammatory Skin Diseases ◽  
Toxicological Studies ◽  
Pros And Cons ◽  
Long Term Studies

Bioactive compounds derived from mushrooms have been shown to present promising potential as cosmeceutical or nutricosmetic ingredients. Scientific data reviewed herein showed that extracts prepared from medicinal and edible mushrooms and their individual metabolites presented antiinflammatory, antioxidant, photoprotective, antimicrobial, anti-tyrosinase, anti-elastase, and anticollagenase activities. These metabolites can be utilised as ingredients to suppress the severity of Inflammatory Skin Diseases, offer photoprotection to the skin, and correct Hyperpigmentation. However, studies regarding the molecular mechanism behind the mentioned bioactivities are still lacking. Challenges associated with the use of mushroom extracts and their associated metabolites as cosmeceutical and nutricosmetic ingredients include several steps from the fruiting bodies to the final product: extraction optimization, estimation of the efficacy and safety claims, the use of micro and nanocarriers to allow for controlled release and the pros and cons associated with the use of extracts vs individual compounds. This systematic review highlights that mushrooms contain diverse biomolecules that can be sustainably used in the development of nutricosmetic and cosmeceutical formulations. Reports regarding stability, compatibility, and safety assessment, but also toxicological studies are still needed to be considered. Furthermore, some of the constraints and limitations hindering the development of this type of ingredients still require long-term studies to achieve major breakthroughs.

scholarly journals Cues to overeat: psychological factors influencing overconsumption

2007 ◽  
Vol 66 (1) ◽  
pp. 113-123 ◽  
Author(s):  
Marion M. Hetherington
Keyword(s):  
Social Context ◽  
Food Intake ◽  
Psychological Factors ◽  
Weight Regulation ◽  
Obesogenic Environment ◽  
Situational Cues ◽  
Factors Influencing ◽  
Variety Effect

Human food intake is driven by necessity, but modern industrialized societies are characterized by food surfeit and an increasingly ‘obesogenic’ environment. This environment tends to discourage energy expenditure and to facilitate energy intake. The amount eaten in any given eating episode depends less on internal need state and more on environmental contextual factors such as the availability of highly-palatable energy-dense foods. In addition, the process of satiation can easily be disrupted by the introduction within a meal of different foods (variety effect), the presence of others (social context) and competing tasks (distraction). Properties of ingestants such as alcohol promote food intake and characteristics of individuals make them more or less susceptible to situational cues to overeat. In the present review the role of each of these environmental factors in promoting overconsumption are considered and the extent to which these factors might contribute to long-term weight regulation is discussed.

How do habitat and climate variation affect phenology of the Amazonian palm, Mauritia flexuosa?

2013 ◽  
Vol 29 (3) ◽  
pp. 255-259 ◽  
Author(s):  
Roxaneh Khorsand Rosa ◽  
Reinaldo Imbrozio Barbosa ◽  
Suzanne Koptur
Keyword(s):  
Sex Ratios ◽  
Climatic Variation ◽  
Fruit Maturation ◽  
Wet Season ◽  
Short Term ◽  
Mauritia Flexuosa ◽  
Males And Females ◽  
Long Term Studies

Abstract:Although the dioecious palm, Mauritia flexuosa plays a pivotal role in Amazonian ecology and economy, little is known about its flowering and fruiting patterns. We investigated the role of habitat and inter-annual precipitation in the phenology of M. flexuosa. We calculated sex ratios and recorded phenology for 20 mo in four populations (N = 246) of savanna–forest ecotone (two sites) and forest (two sites) habitat in Roraima, Brazilian Amazonia. Sex ratios were significantly female-biased, and >98% of females set fruit. No significant relationship was found between habitat and sex. Flowering occurred at the wet/dry season interface (August–November), and fruit maturation occurred during the wet season (May–August). Males and females flowered synchronously, and neither the onset nor termination of flowering differed significantly between habitats. Flowering was negatively associated with present precipitation and positively correlated with prior precipitation (3 mo). Fruiting was positively associated with present precipitation and unrelated to prior precipitation (3 mo). We conclude that habitat has an insignificant effect, although short-term climatic variation may influence phenology of this species in northern Amazonia. These results highlight the need for long-term studies relating flowering and fruiting events, and inter-annual climatic variation.

‘Never so at home’: Charles Elton and the Woods of Wytham

2021 ◽  
Author(s):  
Georgina M. Montgomery
Keyword(s):  
Ecological Site ◽  
The People ◽  
As Species ◽  
History Of ◽  
A Site ◽  
Scientific Value ◽  
Scientific Environment ◽  
Long Term Studies

Focusing on the history of an ecological site northwest of Oxford, UK, this essay explores the people, research and values behind the development of Wytham Woods as a scientific environment. A small patch of woodland, Wytham has long been identified by ecologists as a site of great scientific value. In addition to traditional sources of scientific value, such as species diversity, this article examines the role of emotional connection and aesthetics in how scientific sites are formed and maintained over long periods of time. As such, this history of Wytham Woods sheds light on the multiple factors that nurture the relationships formed when researchers dedicate decades to long-term studies conducted in specific scientific environments.

scholarly journals Nutritional issues for older adults: addressing degenerative ageing with long-term studies

2016 ◽  
Vol 75 (2) ◽  
pp. 169-173 ◽  
Author(s):  
Lisette C. P. G. M. de Groot
Keyword(s):  
Dietary Patterns ◽  
Later Life ◽  
Ageing Process ◽  
Vitamin B ◽  
Epidemiological Evidence ◽  
Important Challenge ◽  
Different Dimensions ◽  
Long Term Studies

The ageing process is influenced by a variety of factors, including extrinsic, malleable lifestyle variables. The present paper deals with the epidemiological evidence for the role of dietary patterns and key nutritional concerns in relation to survival and ageing-related disorders that present themselves in later life. Healthful dietary patterns appear to be most relevant in old age. Specific nutritional concerns are related to vitamin D, vitamin B12 and protein malnutrition. An important challenge to further expand the knowledge base is currently addressed by the NuAge project, acknowledging the complexity of the ageing process and integrating different dimensions of research into human healthy ageing. In the meantime, reversing poor adherence to existing guidelines for a healthy diet remains a first challenge in public health nutritional practices.

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