Search results for " composition"

Structural and functional organization of fish assemblages in a Mediterranean shallow CO2 vent.

2017

Gli effetti dell’acidificazione degli oceani a livello globale hanno richiamato l’attenzione degli scienziati su dei sistemi marini naturali quali i vent superficiali di CO₂. Si tratta di mesocosmi naturali, in quanto su piccole scale spaziali (anche di pochi metri) si osservano marcati gradienti di pH, dove poter testare ipotesi ecologiche dell’acidificazione delle acque marine. Obiettivo della tesi è studiare le risposte della popolazione ittica alla riduzione del pH in vent superficiali mediterranei utilizzando numerosi descrittori, quali la struttura di comunità, l’organizzazione trofica, le caratteristiche e la composizione chimica delle strutture carbonatiche. Inoltre poiché i vent so…

Direct determination of lead in cola beverages by electrothermal atomic absorption spectrophotometry

1992

Optimizing the use of spineless cactus in the finishing diet of lambs: physicochemical properties and sensory characteristics of meat.

2019

BACKGROUND The use of spineless cactus in finishing diets for lambs improves the carcass quality. However, data about its influence on meat traits is very scarce. The effects of spineless cactus inclusion in the finishing diet of lambs at four levels (0, 150, 300 and 450 g kg-1 of dry matter, DM) in replacement of Tifton hay on the physicochemical and sensory properties of meat were studied. RESULTS The spineless cactus modified the chemical composition increasing the protein (P < 0.001) and the fat (P < 0.01) contents of meat, presenting the greatest values in lambs fed diets with 150 and 300 g kg-1 (DM) replacing levels, respectively. However, the spineless cactus did not influence the gr…

Textural, chemical and isotopic variations induced by hydrothermal fluids on mesozoic limestones in northwestern Sicily

1984

The results are given of textural and compositional investigations carried out on carbonate materials outcropping in various localities in northwestern Sicily where fluorite, barite and calcite mineralizations of hydrothermal origin occur. Observation of the textural features indicate variations in the degree of calcite recrystallization and silicification that appear to be more marked in rocks that show more evident effects of mineralization. The geochemical behaviour of the minor elements indicate variations in chemical composition (increase of Mn, Fe, and Sr and removal of Mg) as a result of interactions between mineralizing fluids and host-rocks. Comparison between the isotopic composit…

Isotopic composition of cattle pancreatic stones: biological and geochemical implications.

1977

Latitudinal variations of the O18/O16-ratios of carbonate and phosphate of cattle pancreatic stones parallel a similar pattern of oxygen isotope values in rain water. C13/C12-ratios were virtually identical for the 7 cases studied. Isotopic measurements of mammalian hard tissues may be used for studying short-term climatic variations through Quaternary.

Association between dietary folate intake and serum insulin-like growth factor-1 levels in healthy old women

2013

Abstract Objective High serum levels of insulin-like growth factor-1 (IGF-1) seem to coincide with higher rates of some types of cancer and the risk of all-cause mortality in old people. Eating vegetables seems to reduce IGF-1 levels because they are rich in micronutrients such as vitamins. This study investigates the possible association between vitamin intake and IGF-1 levels in a representative group of healthy elderly women with Mediterranean dietary habits. Design This cross-sectional study included 124 healthy women with a mean age of 71.3 ± 4.2 years and a mean body mass index (BMI) of 27.37 ± 3.48 kg/m 2 attending a mild fitness program twice a week at public gyms in Padova. The mai…

Role of poultry meat in a balanced diet aimed at maintaining health and wellbeing: an Italian consensus document

2015

The relationship between the consumption of meat and health is multifaceted, and it needs to be analyzed in detail, with specific attention to the relevant differences that characterize the effects of the different meat types, as yet considered by only a limited literature. A variable but moderate energy content, highly digestible proteins (with low levels of collagen) of good nutritional quality, unsaturated lipids (mainly found in the skin and easily removed), B-group vitamins (mainly thiamin, vitamin B6, and pantothenic acid), and minerals (like iron, zinc, and copper) make poultry meat a valuable food. Epidemiological studies performed across the world, in highly diverse populations wit…

Influence of fruit canopy position and maturity on yield determinants and chemical composition of virgin olive oil

2019

Background While both maturity and light exposure are important factors determining olive fruit physiology, the relationship between maturity, canopy position and optimal harvesting time has not been well-studied. To understand the interaction of these factors, olive fruits from upper and lower layers of the canopy were harvested from September to January. Maturity, moisture and fat content of the fruit as well as the quality and minor components of the oil extracted were measured. Results Lower light interception at the lower canopy positions resulted in differences in the fruits and oil extracted between canopy layers. Upper layer presented 60% of the overall production; fruit had one uni…

Grapevine row orientation mediated temporal and cumulative microclimatic effects on grape berry temperature and composition

2021

Abstract Ambient radiation and temperature are global drivers of grapevine growth, grape yield and composition, and wine quality. Knowledge of the implications of vineyard row orientation/microclimate is required for decision-making in current and future macro- and mesoclimates. Temporal and cumulative microclimatic changes, induced by vine row orientation (NS; EW; NE-SW; NW-SE) of vertically trellised Shiraz grapevines, on berry pulp temperature and composition at different ripeness levels were investigated. Berries dynamically gained heat energy relative to: ambient climate/weather; direct canopy wall/bunch irradiance; and berry skin colour development. Berries exposed to direct solar rad…

POMOLOGICAL TRAITS, SENSORY CHARACTERISTICS, AND ANTIOXIDANT ACTIVITY IN FRUITS OF NINE LOQUAT CULTIVARS GROWN IN SICILY

2015

Loquat cultivation in Italy currently aims at offering a wider choice of cultivars to growers. The present study determined commercial quality, characterized the antioxidant capacity, and quantified the major bioactive compounds of some local ('BRT 20', 'Claudia', 'Nespolone di Trabia', 'Sanfilippara') and international ('Algerie', 'El Buenet', 'Bueno', 'Golden Nugget' and 'Peluche') cultivars. Fruit was harvested at commercial ripening and chemical-physical determinations of weight, diameters, skin and flesh color, soluble solid content, tritable acidity, antioxidant activity and polyphenol content, and sensory analyses were carried out. Data showed a large variability among genotypes and …