Use Of Animal Fats Research Articles

Researches regarding the animal fats use at a truck diesel engine

The paper objectives answer to European Commission requires which decided for transport sector a 90% reduction of pollutants emissions till the year 2050. Alternative fuels like animal fats can represent a viable solution for diesel engines due to their good combustion properties, pollution reduction, and the possibility of raw state use in blends with diesel fuel or as biodiesel. A D2156 truck diesel engine is fueled with preheated raw animal fats, blend with diesel fuel in 5% and 10%. At the 55% engine load and 1450 rpm engine speed, for 10% animal fats-diesel fuel blend, the pollutant emissions levels decrease with 21% for NOx, with 50% for HC, with 66% for CO, with 30% for smoke due to the decrease of carbon content and increase of oxygen content. The CO2 emission level decrease by 14%. An important novelty aspect is a good correlation between engine running regime, diesel fuel, and animal fats cyclic dose, pollutants emissions level and exhaust gases temperature. The use of animal fats is a good opportunity to improve the environmental protection from pollutants emissions and greenhouse gases for diesel engines. The use of raw animal fats does not require significant changes to the diesel engine design.

Deeper investigation of oxygen-containing compounds in oleaginous feedstock (animal fat) by preparative column chromatography and comprehensive two-dimensional gas chromatography coupled with high-resolution time-of-flight mass spectrometry

The production of renewable fuels as biodiesel and bio-jet fuel is usually originated by the transformation and processing of oleaginous feedstocks, mainly composed of triacylglycerols. Currently, a significant part of the triacylglycerol production relies on grassy oil crops or other woody oil plants, representing more than 120 million metric tons every year. Considering that the worldwide triacylglycerol demand is expected to rise in the future, alternative routes are necessary to ensure a sustainable biodiesel industry and limit diesel price volatility. In this context, the use of animal fats could be an interesting alternative for biodiesel production as the production of animal byproducts represents nearly 17 million tons per year in the European Union only (2020). Animal fats, however, contain large amounts of no-esterified fatty acids and other oxygen compounds, reducing the yield of biodiesel. Therefore, a specific pretreatment is needed before the trans-esterification process. The setup of such appropriate pretreatments requires detailed upstream characterization of the minor components present in the feedstock. For this purpose, the minor component profile of animal fat was investigated by comprehensive two-dimensional gas chromatography coupled with high-resolution time-of-flight mass spectrometry. This was preceded by an innovative sample fractionation and focalization of these minor components by a preparative liquid chromatographic column method. The overall method permitted to extract different levels of information from the two-dimensional chromatograms, leading to a tentative identification of more than 150 compounds, mainly oxygenated, belonging to different chemical classes.

Associations of eating and drinking habits with cardiovascular disease and diabetes in the adult population: data from the ESSE-RF epidemiological study

The presence of a disease, the prognosis of which can be improved by dietary modification, motivates a patient to change their eating habits.Aim. To study the associations of dietary patterns and alcohol consumption with cardiovascular diseases (CVDs), diabetes, myocardial infarction (MI), and stroke in the adult population.Material and methods. The analysis was carried out using data from representative samples of population from 13 Russian regions aged 2564 years (n=19520; men, 7329; women, 12191). The response rate was ~80%. Dietary characteristics were assessed by frequency method.Results. In the diet of people with CVDs, the daily intake of vegetables/ fruits increases by 84% in men and by 19% in women, while the use of animal fats in cooking decreases by 28% and 20%m respectively (p<0,0001). Women with CVDs reduce the consumption of processed meat and sweets by 16 and 19%, respectively (p<0,005). Persons with prior MI reduce the consumption of sweets in the diet: men by 38% and women by 30%. Men with prior MI have higher daily consumption of cereals by 31%, vegetables and fruits by 46%, low-fat dairy products — 2,4 times. In addition, they are more adherent to a healthy and cardioprotective diet by 3,65 and 1,75 times, respectively. Dietary changes in those with prior stroke were noted only in women in the form of a 29% decrease in excess salt intake (p=0,0075). In the diet of people with diabetes, there is decreased consumption of sweets and an increased intake of vegetables/fruits: by 77 and 69% in men and by 79 and 69% in women, respectively (p<0,0001). Men with diabetes are 3 times more likely to adhere to a healthy diet, and women — 2,3 times (p=0,0039 and p<0,0001, respectively).Conclusion. Patients with CVDs, MI, and diabetes have a healthier diet than healthy persons.

The influence of physico-chemical methods on the process of ostrich fat warming

The work is devoted to the study of the influence of technological parameters and optimization of the duration of the process of fat extraction in the presence of electroactivated liquid. The introduction of innovative technologies that allow the rational use of animal fats. The proposed new technical solutions are aimed at obtaining fat with a controlled melting point, high yield and consumer properties, reducing water consumption, energy consumption and industrial waste, reducing the environmental load on the environment. The foregoing gave reason to consider the chosen area of research quite promising. A catholyte with desired properties, obtained by electrolysis of an aqueous solution of NaCL with a mass fraction of 4 g/ 100 cm3, was used as the aqueous phase in wet ejection. The main technological factors were chosen pH of the electroactivated medium, the temperature of the expulsion of raw fat and the duration of the process. It has been revealed that the use of an electrochemical activated medium in wet fat pushing of fat reduces the risks of the formation of free fatty acids and cross-linking compounds. Due to the complex effect of physical and chemical factors, the process of fat extraction without loss in yield of the final product has been intensified. Reducing the duration of heat treatment of raw materials helps to prevent deep hydrolysis of fat and improves the quality of melted fat.

Lipid residues in pottery from the Indus Civilisation in northwest India

This paper presents novel insights into the archaeology of food in ancient South Asia by using lipid residue analysis to investigate what kinds of foodstuffs were used in ceramic vessels by populations of the Indus Civilisation in northwest India. It examines how vessels were used in urban and rural Indus settlements during the Mature Harappan period (c.2600/2500–1900 BC), the relationship between vessels and the products within them, and identifies whether changes in vessel use occurred from the Mature Harappan to Late Harappan periods, particularly during climatic instability after 4.2 ka BP (c.2100 BC). Despite low lipid concentrations, which highlight challenges with conducting residue analysis in arid, seasonally-wet and alkaline environments, 71% of the vessels yielded appreciable quantities of lipid. Lipid profiles revealed the use of animal fats in vessels, and contradictory to faunal evidence, a dominance of non-ruminant fats, with limited evidence of dairy processing. The absence of local modern reference fats makes this dataset challenging to interpret, and it is possible that plant products or mixtures of plant and animal products have led to ambiguous fatty acid-specific isotopic values. At the same time, it appears that urban and rural populations processed similar types of products in vessels, with limited evidence for change in vessel use from the urban to the post-urban period. This study is a systematic investigation into pot lipid residues from multiple sites, demonstrating the potential of the method for examining ancient Indus foodways and the need for the development of further research in ancient organic residues in South Asia.

The effects of soy oil, poultry fat and tallow with fixed energy : protein ratio on broiler performance.

In this study, the effects of using soy oil (SO), poultry fat (PF) and tallow (T) in broiler feed at fixed energy : protein ratio on field and slaughter parameters were evaluated. The average live weight (ALW), feed conversion ratio (FCR), production efficiency factor (PEF) and mortality were investigated as field performance parameters; carcass weight (CW), carcass yield (CY), heart–liver weight (HLW), heart–liver yield (HLY), abdominal fat weight (AFW) and abdominal fat yield (AFY) were investigated as slaughter performance parameters. The experiment was performed in accordance with animal welfare legislation of Turkey and continued for 41 d. It was conducted with a total of 12 600 Ross 308 broiler chicks from Ross 308 strain middle-aged (36 weeks) broiler breeders. Ten different diets in which SO in starter; SO, PF and T in grower and single; or equal mixing of them (SO PF, SO T, PF T) in finisher were used. When animal fat (PF and T) was used instead of SO, especially in grower feed, the field performance parameters improved except for mortality ( ). This situation was not seen in slaughter performance parameters except for CW, HLW and HLY ( ). However, it was found that sex affected slaughter performance parameters except for CY and AFW; higher CW and HLW and lower AFY and HLY were observed due to higher CW in male broilers ( ). In addition, the interactions between the type of the fat and sex were not found to be significant except for CW and CY ( ). At the end of the study, it was seen that if certain ratios are not exceeded, the use of animal fat instead of SO may be a good and economic alternative. Such an arrangement, which can be made depending on oil and fat prices, can reduce the feed cost, which is a more important result in terms of large integrations.

Educational and nutritional status of the adult population of the Russian Federation. The results of an epidemiological study ESSE-RF

Educational status affects the nature of nutrition. Aim. To study the differences in the nutrition pattern of the adult population of the Russian Federation, depending on the educational qualification. Material and methods . The analysis includes the results of a survey of representative samples of male and female population aged 25-64 years (19,520 people, of which 7,329 men and 12,191 women) from 13 regions of the Russian Federation. The nature of the diet was evaluated by the frequency of consumption of the main groups of products and individual eating habits (supplementation, the use of animal fats in cooking). Results. Men of high literacy have higher consumption of raw vegetables and fruits — by 20%, dairy products — by 14%, including cheese — by 15%. There is also a lower consumption of meat and sausage products — by 17%, pickles — by 12% and poultry — by 11%. Less commonly, there is an adding more salt habit — by 18% and the use of animal fats in cooking — by 10%, more often — the consumption of low-fat and non-fat dairy products — by 22%, as well as raw sugar in an amount not exceeding 5% of the daily calorie content — by 21% The level of consumption of red meat, cereals and pasta, legumes, sweets, cottage cheese, sour cream and cream showed no significant differences with men of a different educational status. Women of high educational status more often include vegetables and fruits in their daily diet — by 14%, dairy products — by 18%, including cheese — by 15%. Less often they consume butter — by 12%, as well as foods with a high salt content: meat and sausage products — by 22% and pickles, marinades — by 15%. Russians with “above average” education are less likely to add more salt — by 14% and use animal fats in cooking — by 14%, more often they choose low-fat and nonfat dairy products — by 21%. In the level of consumption of red meat, cereals and pasta, legumes, sour cream and cream, there were no differences. Conclusion. People with a high literacy in the Russian population regardless of gender differences have a more protective diet compared to people with a low educational status. ESSE-RF study participants and article co-authors: Moscow: Zhernakova Yu. V., Boytsov S. A., St. Petersburg: Rotar O. P., Vladivostok: Kulakova N. V., Nevzorova V. A., Vladikavkaz: Astakhova Z. T., Vologda: Shabunova A. A., Volgograd: Nedogoda S. V., Voronezh: Chernykh T. M., Ivanovo: Belova O. A., Kemerovo: Artamonova G. V., Indukaeva E. V., Krasnoyarsk: Grinshtein Yu. I., Petrova M. M., Orenburg: Libis R. A., Samara: Duplyakov D. V., Tomsk: Trubacheva I. A., Kaveshnikov V. S., Serebryakova V. N., Tyumen: Efanov A. Yu., Medvedeva I. V., Shalaev S. V.

Urban and rural dietary patterns: are there differences? The results of the ESSE-RF epidemiological study

The higher prevalence of alimentary-dependent risk factors for chronic non-communicable diseases in the Russian Federation among rural residents suggests that there are differences in the diets of city and village residents. Aim . To examine the diet differences of city and village adults. Material and methods . The analysis included representative samples from male and female population aged 25-64 years (n=21923, of which 8383 and 13550 are men and women, respectively) from 13 regions of the Russian Federation. The diet features were assessed by the frequency of consumption of the main food groups and individual eating habits: salting, the use of animal fats in cooking. Results . Rural men 18% more often than urban daily consumed meat sausages, 13% — salting and marinades and less often included in the diet meat (23%), fresh vegetables and fruits (28%), “milk, kefir, yogurt” (12%), sour cream (17%), quark (23%) and cheese (14%). Rural women less often consumed meat (19%), dairy products (18%), including cottage cheese (25%) and cheese (26%), but more often — salting (34%) and beans (10%). Rural women more often salt already prepared food — the odds ratio (OR) =1,32; 95% confidence interval (CI) 1,03-1,70 (X 2 =4,81, p=0,0282). Excess sugar intake among rural men was more common — OR=1,23; 95% CI 1,10-1,37 (X 2 =13,06, p>0,0001). The women of the village more often added butter to the dishes (sandwich, porridge, mashed potatoes, etc.) than the urban ones — OR=1,14; 95% CI 1,03-1,25 (X 2 =6,90, p=0,0086), in contrast to men, for whom the consumption of butter did not differ. In general, excess consumption of salt and sugar in the diet of village men was more common than among city men — OR=1,26; 95% CI 1,13-1,42 (X 2 =15,95, p>0,0001), in contrast to women, among whom no such differences were found (X 2 =3,02, p=0,0821). The diet, characterized by excessive consumption of salt, sugar and insufficient consumption of vegetables and fruits, was more often present among rural men — OR=1,30; 95% CI 1,12-1,53 (X 2 =10,92, p=0,0009). In urban and rural women, differences in the frequency of such diet were not found. Conclusion . The urban dietary pattern is characterized by higher consumption of meat, dairy products, vegetables and fruits, while in the rural model, the consumption of beans, salting, sugar and butter is higher. Participants of the ESSE-RF study: Moscow : Zhernakova Yu. V., Boytsov S. A., Saint-Petersburg : RotarO. P., Vladivostok : Kulakova N. V., Nevzorova V. A., Vladikavkaz : Astakhova Z. T., Vologda : Shabunova A. A., Volgograd : Nedogoda S. V., Voronezh : Chernykh T. M., Ivanovo : Belova O. A., Kemerovo : Artamonova G.V., IndukayevaE. V., Krasnoyarsk : Grinshtein Yu. I., Petrova M. M., Orenburg : Libis R. A., Samara : Duplyakov D. V., Tomsk : Trubacheva I. A., Kaveshnikov V. S., Serebryakova V. N., Tyumen : Efanov A. Yu., Medvedeva I. V., Shalaev S. V.

Cardiovascular risk factors with an emphasis on hypertension in the Mura Indians from Amazonia

BackgroundThe Brazilian indigenous population is currently undergoing a process of epidemiological transition regarding the occurrence of communicable diseases, malnutrition and non-communicable chronic diseases. Chronic non-infectious diseases are the most common causes of death worldwide, and hypertension is one of the main cardiovascular risk factors. Thus, the main objective of this paper was to evaluate the prevalence of cardiovascular risk factors, with an emphasis on hypertension, in the Mura Indians living in the municipality of Autazes in the northern Brazilian state of Amazonas.MethodsThis cross-sectional study was conducted among 455 natives (57.8% women, 42.2 ± 16.7 years) selected by simple random sampling. Sociodemographic variables, habits and lifestyles, anthropometric data, fasting glycaemia and lipid profiles were evaluated. Blood pressure was measured with a validated automatic device. Values of p ≤ 0.05 were considered significant.ResultsThe prevalence of hypertension was 26.6%. The other cardiovascular risk factors were as follows: increased waist-hip ratio (85.1%); increased neck circumference (60.2%); increased waist circumference (48.6%); overweight (57.1%); physical inactivity (52.7%); use of alcoholic beverages (40.2%); high total cholesterol (27.5%); increased triglycerides (23.5%); smoking (20.4%); and diabetes mellitus (3.0%). In relation to non-hypertensive individuals, indigenous hypertensive individuals were (p ≤ 0.05) older and had a higher proportion of individuals living with partners and individuals who were retired, as well as a lower level of schooling and higher family income. The indigenous people living in urban areas had a higher prevalence of hypertension than did those living in rural areas. In relation to habits and lifestyles, hypertensive Indians had a lower prevalence of smoking, higher frequency of the use of animal fat during meal preparation, lower frequency of vegetable oil use and lower frequency of salt addition to already-prepared meals. An assessment of anthropometric variables and laboratory markers showed that the hypertensive indigenous individuals had higher values of body mass index, neck circumference, waist circumference, visceral fat, Conicity Index, and body fat than did the non-hypertensive individuals.ConclusionThe prevalence of hypertension and other important cardiovascular risk factors in the Mura Indians was high. This finding is probably due to the adoption of inappropriate habits and lifestyles.

The use of animal fats in the diesel fuelled engine

The decrease in the reserves of non-renewable oil products has led to the search for alternative solutions to ensure the replacement of petroleum products used in internal combustion engines and a reduction of the pollution imposed by international regulations for the limitation of greenhouse gases, of NOx, HC, CO and smoke. So, a good solution is the use of preheated animal fats used at the compression ignition engines in mixture with the diesel fuel. The properties of animal fats are similar to diesel fuel, and therefore animal fats preheating and blending with diesel fuel is a simple, cheap method and their use in compression ignition engines does not require engine modifications. The main advantages of animal fats are the cetane number and the inferior calorific power which have values that are very close to those of diesel fuel, but have the disadvantages of high viscosity and poor vaporization characteristics, the preheating of animal fats being required. When animal fats are preheated to a temperature of about 40°C and mixed with diesel fuel, they are totally soluble in blend which is completely homogeneous, with no limit of dissolution.

Recent trends in biodiesel production from commonly used animal fats

Summary Changes in climate due to the enormous amount of carbon dioxide emissions have really encouraged the development of energy sources that are renewable, sustainable, and eco-friendly. The development of alternative energy sources can also be attributed to the rapid decrease in resources of fossil energy. Biodiesel has gained significant interest in recent years due to its fossil fuel–like properties and sustainable and eco-friendly characteristics. However, most biodiesels are expensive because of the high cost of feedstock largely based on edible vegetable oil sources. The use of animal fats waste as cost effective feedstock in biodiesel production has gained considerable attention in recent years. Although, most studies regarding the use of animal wastes as feedstock in biodiesel production are still in the early stages, the advantages of this type of feedstock have been highlighted in the literature. However, most studies have not focus on the recent advances in the use of animal fats waste. The studies on the use of novel approach have been reported in isolation. Therefore, this current study attempts to highlight recent developments of the most commonly used animal fats waste in the production of biodiesel. In addition, emphasis was given to the most appropriate production technique, catalyst, energy requirement, and optimum reaction conditions.

Palm oil: Processing, characterization and utilization in the food industry – A review

The oil palm tree is an ancient tropical plant that originated from West Africa. Palm oil has centuries׳ long use as food and medicine. This review covers the recent significant materials found in the literature on palm oil processing, refining, and use in frying especially in blends with other vegetable oils. Crude palm oil (CPO) is obtained from the fruit of the oil palm tree (Elaeis guineensis). The oil is rich in palmitic acid, β-carotene and vitamin E. CPO has been fractionated mainly into liquid palm olein and solid palm stearin in order to diversify its food applications. Palm oil is highly stable during frying especially due to the synergistic activity of β-carotene and tocotrienol. In recent years there has been a shift from the use of animal fats and hydrogenated vegetable oils in frying and other food applications. The use of naturally stable oils such as palm oil and composite oils like blends of palm oil and other fats and oils is practiced to ensure that maximum benefits are derived from the oils. Blending offers functional, nutritional and technical advantages, such as tailoring the oil to suit frying applications. The objective of this review is to combine and condense the body of research on the processing, characterization and use of palm oil especially in frying as well as suggest areas that need further research.

Dietary fatty acid profile: effects on caecal fermentation and performance of young and fattening rabbits

The present work was performed to study the effect of dietary inclusion of different fatty acid combinations (saturated, n-3 and n-6 polyunsaturated fatty acids; PUFA) on caecal fermentation activity, feed intake, growth rate and feed efficiency of young rabbits around weaning (17 to 44 d) and fattening rabbits (28 to 63 d of age). Five diets were formulated using the same raw materials and including 3% of lard (A diet, rich in saturated fat), sunflower oil (S diet, rich in n-6 PUFA), linseed oil (L diet, rich in n-3 PUFA), sunflower oil and lard at 1:1 rate (SA diet), or linseed oil and lard at 1:1 rate (LA diet). In the first trial, the effect of the 5 diets on rabbit performance was evaluated in a fattening period from 28 to 63 d of age, with 490 rabbits allocated in individual cages; mortality rates were measured with 1670 rabbits (750 allocated in individual cages and 920 in collective cages, 8 rabbits/cage). In the second trial, 120 young rabbits were used from 17 to 44 d of age, weaned at 28 d, allocated in collective cages and randomly fed with A, S or L diets, evaluating performance and gut weight and caecum fermentation activity. The use of animal fat or vegetable oil and the richness in n-3 or n-6 PUFA of vegetable oils had no significant effect on the feed intake (130 g dry matter/d) and growth rate of fattening rabbits (45.5 g/d), but the inclusion of sunflower oil in diet improved feed conversion rate (2.79 for S diet vs. 2.87 for the rest of diets; P<0.01). Mortality rate was lower when vegetable oils were included in diet (34 and 37% for S and L diets respectively vs. 45% for A diet; P<0.05). Feed intake and growth rate increased quickly from 17 to 44 d, but only small occasional differences were recorded in growth rate of young rabbits, in favour of rabbits receiving animal fat from 17 to 21 d (P<0.05) or sunflower oil from 28 to 30 d (P<0.05). Caecal traits of rabbits at 30 and 44 d of age were similar for the different dietary groups, although butyric acid concentration in caecum content at 44 d was the lowest (P<0.05) with L diet.

Use of Animal Fat as a Symbol of Health in Traditional societies Suggests Humans may be Well Adapted to its Consumption

Background and objectives: Recommendations to limit the dietary consumption of saturated fat have been adopted by public health organizations in most countries. However, recent scientific studies and reviews have questioned the alleged negative health claims regarding saturated fat.This research aims to provide a historical, evolutionary point of view to the debate through a short review of evidence for animal fat consumption by Paleolithic and recent traditional societies, and the discernment of how recent traditional societies perceived animal fat in terms of health and other lifestyle aspects.Methodology: Literature review of the importance of animal fat's dietary consumption in prehistoric and recent traditional societies and scanning of ethnographic records for symbolic use of animal fat in rituals, linguistics and mythology. The contexts of such cultural expressions provide us with the peoples' perception of the analogues quality that animal fat imparts in its use as a symbol.Results: Collection of 200 cases from culturally and geographically diverse traditional societies, reveals that in all three expression forms, there appears to be a clear tendency to associate animal fat with extremely positive meanings like "fertility", "sacredness", "wealth", "health", and even " a source of creation" and life itself.Conclusion: In line with evidence for the importance of dietary animal fat in prehistoric and traditional societies, the studied traditional societies perceived animal fat as a vital component of their diet and a profound source of health rather than an impediment to health as it is presented in many dietary recommendations today.

Biodiesel from lignocellulosic biomass – Prospects and challenges

Biodiesel can be a potential alternative to petroleum diesel, but its high production cost has impeded its commercialization in most parts of the world. One of the main drivers for the generation and use of biodiesel is energy security, because this fuel can be produced from locally available resources, thereby reducing the dependence on imported oil. Many countries are now trying to produce biodiesel from plant or vegetable oils. However, the consumption of large amounts of vegetable oils for biodiesel production could result in a shortage in edible oils and cause food prices to soar. Alternatively, the use of animal fat, used frying oils, and waste oils from restaurants as feedstock could be a good strategy to reduce the cost. However, these limited resources might not meet the increasing demand for clean, renewable fuels. Therefore, recent research has been focused the use of residual materials as renewable feedstock in order to lower the cost of producing biodiesel. Microbial oils or single cell oils (SCOs), produced by oleaginous microorganisms have been studied as promising alternatives to vegetable or seed oils. Various types of agro-industrial residues have been suggested as prospective nutritional sources for microbial cultures. Since the most abundant residue from agricultural crops is lignocellulosic biomass (LCB), this byproduct has been given top-priority consideration as a source of biomass for producing biodiesel. But the biological transformation of lignocellulosic materials is complicated due to their crystalline structure. So, pretreatment is required before they can be converted into fermentable sugar. This article compares and scrutinizes the extent to which various microbes can accumulate high levels of lipids as functions of the starting materials and the fermentation conditions. Also, the obstacles associated with the use of LCB are described, along with a potentially viable approach for overcoming the obstacles that currently preclude the commercial production of biodiesel from agricultural biomass.

Análise de pesticidas organoclorados em óleos vegetais por cromatografia gasosa de alta resolução (HRGC)

Os óleos vegetais comestíveis foram introduzidos na dieta humana em substituição as gorduras animais nas últimas décadas sendo amplamente consumidos em todo o mundo. O presente artigo descreve o desenvolvimento de uma metodologia para análise de aldrin, dieldrin, endrin e endosulfan em óleos vegetais por cromatografia gasosa de alta resolução (HRGC) utilizando-se extração em fase sólida (SPE). As médias de recuperação dos pesticidas estiveram entre 70 e 110%[1].

Análise de pesticidas organoclorados em óleos vegetais por cromatografia gasosa de alta resolução (HRGC)

Os óleos vegetais comestíveis foram introduzidos na dieta humana em substituição as gorduras animais nas últimas décadas sendo amplamente consumidos em todo o mundo. O presente artigo descreve o desenvolvimento de uma metodologia para análise de aldrin, dieldrin, endrin e endosulfan em óleos vegetais por cromatografia gasosa de alta resolução (HRGC) utilizando-se extração em fase sólida (SPE). As médias de recuperação dos pesticidas estiveram entre 70 e 110%[1].

Association of BMI and nutritional habits with hypertension in the adult population of Croatia

The purpose of the present study was to investigate the distribution of hypertension, its nutritional and other determinants and their association in Croatia. Population-based, cross-sectional study. Croatia. Representative random sample of 9070 adults (18 years and older) from all Croatian regions, selected using multistage sampling. Overall prevalence of hypertension (arterial blood pressure >or=140/90 mmHg) in Croatia was 45.5 %, of which 40 % were newly diagnosed hypertensives. There was no difference in the percentage of hypertensives between the continental and Mediterranean parts of Croatia. Newly diagnosed hypertension was found to be positively associated with increased BMI, age and alcohol consumption in the total sample and with moderate consumption of coffee in women, as well as inversely associated with regular consumption of fruits and vegetables in the total sample and high consumption of coffee in the total sample and in men. No association with newly diagnosed hypertension was recorded for use of animal fat, consumption of whole milk, smoked meat products, for adding salt, smoking and leisure-time physical activity. Hypertension is a major public health problem in both continental and Mediterranean parts of Croatia. Maintenance of normal body mass, its reduction if already increased, and regular consumption of fruits and vegetables are proposed as priorities for primary prevention of hypertension in Croatia.

Roman Diet and Trade: Evidence from Organic Residues on Pottery Sherds Recovered at the Roman Town ofCalleva Atrebatum(Silchester, Hants.)

ABSTRACTThe analysis of organic residues from pottery sherds using Gas-Chromatography with mass-spectroscopy (GC-MS) has revealed information about the variety of foods eaten and domestic routine at Silchester between the second and fourth–sixth centuries A.D. Two results are discussed in detail: those of a second-century Gauloise-type amphora and a fourth-century SE Dorset black-burnished ware (BB1) cooking pot, which reveal the use of pine pitch on the inner surface of the amphora and the use of animal fats (ruminant adipose fats) and leafy vegetables in cooking at the Roman town of Silchester, Hants.

Ethanol animal fat emulsions as a diesel engine fuel – Part 2: Engine test analysis

This work aims on the efficient use of animal fat in a diesel engine by making its stable emulsions with ethanol and water. A single cylinder direct injection diesel engine is tested using neat diesel, neat animal fat and animal fat emulsion (optimal emulsion) as fuels under variable load operating conditions. Results show increased peak pressure and ignition delay with ethanol animal fat emulsion as compared to neat fat. Heat release pattern shows improvement in the premixed combustion phase with animal fat emulsion as compared to neat animal fat. Drastic reduction in smoke, nitric oxide, hydrocarbon and carbon monoxide emissions are observed with the emulsion as compared to neat fat and neat diesel mainly at high power outputs. Only, hydrocarbon and carbon monoxide emissions are found as high with the emulsion at light loads. In general, animal fat emulsion shows considerable reduction in all emissions and improvement in engine performance as compared to neat fat.