Elizabeth Aparecida F S Torres

University of São Paulo | USP · Department of Nutrition (São Paulo)

Polycyclic aromatic hydrocarbons (PAHs) are classified as environmental and food contaminants, with several adverse health effects, especially genotoxic and carcinogenic actions. In processed meats, they are the major contaminants, especially those subjected to smoking processes. Considering that the population is exposed to PAHs through several ro...

Background Nuts consumption is related to cardioprotective effects on primary cardiovascular prevention, but studies conducted in secondary prevention are small, scarce and controversial. The objective of this trial was to evaluate the effects of a regional and sustainable cardioprotective diet added or not with an affordable mixed nuts on cardiome...

The global prevalence of cancer continues to increase, so does its mortality. Strategies that can prevent/treat this condition are therefore required, especially low-cost and low-toxicity strategies. Bioactive compounds of plant origin have been presented as a good alternative. In this scenario, due to its abundant polyphenolic content (around 60 t...

Cholesterol and cholesterol oxides have numerous implications for human health, highlighting the importance of determining these compounds in highly demanded and consumed foods such as meat and meat products. Gas chromatography (GC) and high-performance liquid chromatography (HPLC) are the most used techniques for detecting and quantifying choleste...

Introdução: Os hidrocarbonetos policíclicos aromáticos representam uma classe de cerca de 200 compostos, e são contaminantes orgânicos formados por anéis aromáticos condensados (Khalili et al., 2023). São conhecidos pelas propriedades mutagênicas e carcinogênicas, sendo o benzo(a)pireno (BaP) conhecido como o principal composto carcinogênico classi...

Peanut skin is a rich source of bioactive compounds which may be able to reduce the risk factors associated with metabolic syndromes. This study aimed to characterize bio-compounds from peanut skin (Arachis hypogaea) and their bioactivity (antioxidant activity, inhibition of lipase, and carbohydrase enzymes) and to evaluate their anti-proliferative...

Unlabelled: Eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, naturally abundant in fish oil (FO), are known for their anti-inflammatory and potential antioxidant properties. Aim: To evaluate the effect of the infusion of a fish oil-containing parenteral lipid emulsion (FOLE) on markers of liver lipid peroxidation and oxidative stress in r...

Chocolate is widely consumed worldwide and its market grows every year, with emerging demands for new high-quality products. However, this product is susceptible to contamination with polycyclic aromatic hydrocarbons (PAHs), representing a risk for humans. In this study, a methodology for the evaluation of benzo[a]pyrene, benzo[a]anthracene, benzo[...

Polycyclic aromatic hydrocarbons (PAHs) are organic compounds that have been found in different food categories, and meat products can have high concentrations of PAHs, since the technological processes to which they are subjected, such as smoking, can produce several compounds. Considering the risk that these compounds can bring to the population’...

The present study evaluated the effects of commercial guarana ( Paullinia cupana ) powder as a growth-promoter and natural antioxidant supplement in aquafeeds. In Experiment 1, fish were fed with graded levels of guarana powder (0, 1.25, 2.5, 5 and 10 g/kg) during 60 days. Growth, hemato-immunological and biochemical performance were evaluated in h...

The effect of adding pink pepper (Schinus terebinthifolius Raddi) fruits during sardines canning to minimize cholesterol oxidation were investigated. Canning resulted in an exchange of fatty acids, cholesterol and cholesterol oxides between fish muscle and liquid medium (soybean oil). It also induced lipid oxidation, which was demonstrated by the d...

Cardiovascular disease risk is related to oxidative stress and hypercholesterolemia. Guarana seed powder contains flavanols that possess antioxidant properties and cholesterol-lowering effects. However, the molecular mechanism through which guarana seed powder may decrease cholesterol uptake from the intestinal lumen remains unclear. Thus, this stu...

Noncommunicable diseases (NCDs) are the leading cause of mortality worldwide. Dietary intake of polyphenols may protect against the development of NCDs. Coffee is a rich source of phenolic acids in the Western diet that may prevent or treat hyperlipidemia, type 2 diabetes, chronic liver diseases, and obesity. These health effects are attributed, at...

Background COVID-19 (coronavirus disease 2019) is an infectious disease which led to a pandemic. Social isolation was therefore adopted as the main measure to prevent contamination and maintain public health. Some changes can occur in stress levels, sleep quality, dietary consumption, and mood (such as levels of anxiety and depression). The aim of...

Este livro reúne os trabalhos aprovados no II Congresso Brasileiro Online de Ciência dos Alimentos, organizado pela Agron Food Academy. Os trabalhos estão organizados nas modalidades de pesquisa e revisão de literatura distribuídos conforme os eixos temáticos do evento, que incluíram as áreas: Biotecnologia de Alimentos; Controle de Qualidade de Al...

The present study reports bioactive constituents from biquinho pepper, such as carotenoids, capsaicinoids, and capsinoids, identified by UHPLC-MS. Biquinho pepper extract showed an antioxidant potential by DPPH (33.17 ± 0.08%), ORAC (32.35 ± 0.02 μM TE/g), β-carotene/linoleic acid (55.80 ± 1.30%), and FRAP (315.88 ± 4.23 μmol TE/g) assays. Addition...

This study evaluated the protective effect of parsley (Petroselinum crispum Mill.) against lipid and cholesterol oxidation in omelets prepared by air frying, pan frying, and microwaving. The bioactive composition and in vitro antioxidant capacity of parsley extract was characterized. Compounds such as phenolic acids and their derivatives (p-coumari...

Jua (juá in Portuguese) is an underexplored fruit from Brazil’s northeast. This fruit is rich in antioxidant substances. However, there is a dearth of information about jua’s bioactive potential. The present study evaluated two extraction methods (continuous agitation and ultrasound-assisted extraction—UAE) and employed three different solvents (wa...

This study determined the bioactive composition and antioxidant potential of parsley, chives and their mixture (Brazilian cheiro-verde). Additionally, the effect of these herbs against cholesterol oxidation in grilled sardines (Sardinella brasiliensis) were also investigated. Ultra-high Performance Liquid Chromatography (Electrospray Ionization) Ma...

Guarana (Paullinia cupana) is a plant from the Amazon region with cultural importance. Despite its early ancestral use by indigenous tribes, the first reports regarding the benefits of guarana consumption for human health were published in the 19th century. Since then, the use of guarana seed in powder and extract forms has been studied for its div...

Background Nut consumption has been related to improvements on cardiometabolic parameters and reduction in the severity of atherosclerosis mainly in primary cardiovascular prevention. The objective of this trial is to evaluate the effects of the Brazilian Cardioprotective Diet ( DI eta CA rdioprotetora Br asileira , DICA Br) based on consumption of...

Lemon juice is used to enhance the flavor of dishes prepared with fish, which is more prone to oxidation than other flesh food. This study evaluated the impact of treating sardine fillets (Sardina pilchardus) with Tahiti lemon juice and submit them to different domestic cooking methods (air fryer, grill, and deep-fat fryer), regarding the oxidation...

Excessive consumption of salt has become a public health problem and in this context, the use of aromatic herbs can help to reduce the consumption of this mineral. The aim of this study was to assess the impact on the sensory acceptance of salt reduction and the addition of herbs (oregano, rosemary, and basil) to beef burgers. Sensory evaluation, b...

Objective: The primary objective of this study was to determine the effects of a healthy diet supplemented with extra virgin olive oil or pecan nuts on plasma fatty acid (PFA) in patients with stable coronary artery disease (CAD). Research Methods & Procedures: Patients aged 40 to 80 years were randomized to one of three dietary interventions (allo...

Polycyclic aromatic hydrocarbons (PAHs) are chemical compounds comprised of carbon and hydrogen molecules in a cyclic arrangement. PAHs are associated with risks to human health, especially carcinogenesis. One form of exposure to these compounds is through ingestion of contaminated food, which can occur during preparation and processing involving h...

Canned fish is submitted to processes that may degrade its lipids and form harmful compounds called cholesterol oxidation products (COPs). Samples of Brazilian commercial canned tuna were analyzed to evaluate the influence of different liquid mediums (oil and brine) on the fatty acid composition and formation of COPs. The exchange between fish lipi...

A clear gap with respect to the potential biological properties of wheat flavonoids exists in the available literature. This information is crucial for breeding programs aiming to produce new varieties presenting improved health benefits. Accordingly, advanced breeding lines of whole durum wheat were evaluated in this contribution. The highest reco...

Coffee is the most consumed beverage in the US and several other countries such as Brazil and Colombia. Coffee has been recognized for a myriad of health benefits including those arising from its antioxidant properties. However, to the best of our knowledge, there is no literature addressing the fate of phenolic compounds from espresso capsules con...

Background To contribute to the design of specialized parenteral nutrition protocols in surgery, we evaluated the dynamics of polyunsaturated fatty acids (PUFA) concentrations in different body pools following the infusion of fish oil-containing lipid emulsion (FOLE) in rats that had undergone surgical central venous catheterization (CVC). Methods...

Addition of medium‐chain triglycerides (MCT) into parenteral lipid emulsions rich in fatty acids from fish oil (FOLE) has been shown to improve their clearance and extrahepatic uptake. We assessed whether this effect could favor the leukocyte uptake of n‐3 polyunsaturated fatty acids (PUFAs) for immunomodulatory purposes Methods Following 5‐days a...

This study determined the total phenolic content and antioxidant capacity of garlic (Allium sativum L.) and leek (Allium ampeloprasum L.), as well as evaluated their anticholesterol oxidation potential in fish burgers. The total phenolic contents were 1.1 ± 0.1 mg GAE/g FW to garlic and 1.3 ± 0.4 mg GAE/g FW for leek. Leek extract showed antioxidan...

In the last years phytosterols, natural components of plants, have received more attention due to association of their consumption with reducing risk of cardiovascular diseases and cancer. There are several scientific studies about phytosterols in vegetable oils, but they are scarce in unconventional oils. The objective of this research was evaluat...

Schinus terebinthifolius Raddi fruit, known as Brazilian pepper or aroeira, is a natural source of bioactive compounds. However, studies about the antioxidant and nutritional contribution of this fruit in food systems are limited. Regarding the presence of bioactive compounds, flavonoids showed the highest level (10.33 ± 0.34 mg QE/g), and potentia...

Investigations have shown the presence of bioactive substances in agricultural by-products. As some of these compounds present hypolipidemic and antioxidant activities, they could be considered economical alternatives to be used as supplements. This study investigates the hypolipidemic and antioxidant properties of grape processing by-products, fee...

This study evaluated the protective effect of ground aroeira (Schinus terebinthifolius Raddi) fruit addition against fatty acids and cholesterol oxidation in model systems containing sardine oil (Sardinella brasiliensis) during heating (150 and 180 °C). High temperatures reduced the amount of essential polyunsaturated fatty acids and caused the for...

The Brazilian Food Supplement Law recently recognized that guarana (Paullinia cupana) contains bioactive substances, hence supporting its role as a functional food ingredient. The health benefits of guarana are associated, at least in part, to its phenolic compounds. However, to the best of our knowledge, there is no literature addressing the prese...

This study evaluated the protective effect of ground aroeira (Schinus terebinthifolius Raddi) fruit addition against fatty acids and cholesterol oxidation in model systems containing sardine oil (Sardinella brasiliensis) during heating (150 and 180 °C). High temperatures reduced the amount of essential polyunsaturated fatty acids and caused the for...

A high daily intake of fruits and vegetables is an important strategy to promote health. The mechanism explaining the health benefits of plant food materials is attributed, at least in part, to their high content of bioactive phenolics. Guarana (Paullinia cupana) is a typical product from Amazon biota and, mainly as a source of caffeine; its seeds...

A high daily intake of fruits and vegetables is an important strategy to promote health. The mechanism explaining the health benefits of plant food materials is attributed, at least in part, to their high content of bioactive phenolics. Guarana (Paullinia cupana) is a typical product from Amazon biota and, mainly as a source of caffeine; its seeds...

This post was one of the winners of the Graduate Student Research Competition: International Division.

Guaraná (Paullinia cupana) seeds are rich in flavan-3-ols (catechins) and reduce oxidative stress in humans. We determined the concentration and in vitro bioaccessibility of catechins in guaraná seeds from two geographical origins, and measured their Caco-2 permeability. The effect of macronutrients on catechins' bioaccessibility and Caco-2 permeab...

Introduction: Indoxyl sulfate (IS) and p‐cresyl sulfate (p‐CS) are albumin‐bound uremic toxins that are difficult to remove by hemodialysis (HD). Human serum albumin (HSA) carries several compounds, including fatty acids that can bind to site II of HSA and represent competing ligands for uremic toxins. The aim of this study was to investigate the a...

Objectives: The aim of this study was to assess the association of plasma and erythrocyte ω-3 and ω-6 fatty acids with multiple oxidative stress biomarkers in breast cancer patients. Methods: Ninety-five women with recently diagnosed breast cancer and no previous treatment were selected for this study. The socioeconomic, clinical, and demographi...

Abstract Background Proinflammatory biomarkers levels are increased among patients with cardiovascular disease, and it is known that both the presence of insulin resistance and diet may influence those levels. However, these associations are not well studied among patients with established cardiovascular disease. Our objective is to compare inflamm...

FERRARI C.K.B., TORRES E.A.F.S. (2002): Lipid oxidation and quality parameters of sausages marketed locally in the town of Săo Paulo (Brazil). Czech J. Food Sci., 20: 144-150. Lipid oxidation constitutes one of the most important causes of the chemical deterioration of foods, especially meats. Many harmful effects on human health are associated wit...

Influência do extrato de guaraná na absorção de colesterol em células Caco-2.

This study aimed at evaluating the polycyclic aromatic hydrocarbons (PAHs) contamination of commercial vegetable oils and examined the identity through the fatty acids profiles. Coconut, safflower, evening primrose, and linseed oils marketed in São Paulo (Brazil) were investigated totaling 69 samples. Four PAHs, benzo[a]anthracene (BaA), chrysene (...

Practical application: Fish is an important source of essential lipids. However, oxidized cholesterol products, which are formed during thermal processing, are potential hazards to human health. Air fryers present an alternative thermal process for frying food without oil, and this method of cooking is considered to be more convenient and healthie...

Guaraná (Paullinia cupana) is a typical product from Amazon biota that exerts antioxidant capacity due to the presence of phenolic compounds, such as catechin, epicatechin and proanthocyanidins. The objective of this study was to evaluate the potential inhibitory activity of guaraná extracts, after digestion in vitro, on carbohydrates-metabolism en...

Mechanically deboned chicken meat (MDCM) is a raw material produced with specific mechanical deboning equipment using cheaper chicken parts such as the back, the neck and meat clinging to the bones. Mechanical separation changes the composition of the original raw material, resulting in meat with higher fat and mineral contents; then, determination...

Among the different food categories, the oils and fats are important sources of exposure to polycyclic aromatic hydrocarbons (PAHs), a group of organic chemical contaminants. The use of a validated method is essential to obtain reliable analytical results since the legislation establishes maximum limits in different foods. The objective of this stu...

We assessed the effects of guaraná (Paullinia cupana) consumption on plasma catechins, erythrocyte antioxidant enzyme activity (superoxide dismutase, catalase and glutathione peroxidase) and biomarkers of oxidative stress (ex vivo LDL oxidation, plasma total antioxidant status and ORAC, and lymphocyte single cell gel electrophoresis) in healthy ove...

Antioxidant-rich foods scavenge free radicals and other reactive species, decreasing the risk of different non-communicable chronic diseases. The objective of this study was to review the content of total antioxidant capacity of commonly foods comparing with experimental data and to explore the health benefits due to foods with moderate to high TAC...

Fish and fish products are important from a nutritional point of view due to the presence of high biological value proteins and the high content of polyunsaturated fatty acids, especially those of the n-3 series, and above all eicosapentaenoic acid and docosahexaenoic acid. However, these important food products also contain significant amounts of...

Background: studies have investigated the relationship between the transition through menopause and cardiovascular diseases. White population, generally, have lower levels of traditional coronary heart risk factors, particularly dyslipidemia, hypertension, obesity, and diabetes, and lower rates of coronary heart disease mortality, than black popula...

Garlic is used in many dishes but some of its bioactive compounds are lost when exposed to heat. This study evaluated bioactive compounds, antioxidant activity and Maillard reaction products of raw (RG), boiled (BG) and fried garlic (FG). Total phenolic compounds, flavonoids, allicin and phytosterol were quantified as well as dietary fibres and min...

This study compared the regular and decaffeinated coffees in relation to antioxidant capacity, levels of some antioxidant molecules and stability of these parameters over a six-month period under different storage conditions. The regular coffee samples analyzed right after the industrial production showed higher antioxidant capacity (ORAC and DPPH)...

This study investigated the effect of a 28-day administration of coffee brew in the activity of antioxidant enzymes in rats. After this period given 2.0 mL/day of this beverage, the activity of hepatic superoxide dismutase, catalase and glutathione peroxidase increased 74.8 %, 59.4 % and 135.2 % respectively while cytosolic level of Nrf2 increased...

The objective of the study was to compare the effect of organic and conventional cultivation on the antioxidant compound content and antioxidant activity of the Carmen tomato cultivar. Tomatoes were analyzed regarding ascorbic acid, phenolic compounds, lycopene content and antioxidant activity. Organic tomatoes presented higher content of ascorbic...

This paper aimed to evaluate the influence of seasonality on the chemical composition of oysters (Crassostrea rhizophorae). Samples were collected during summer and winter from the estuary and lagoon complex of the municipality of Barra de São Miguel, Alagoas, Brazil. Statistical differences (p<0.05) between summer and winter were observed in relat...

No Estado de São Paulo, o camarão marinho Xiphopenaeus kroyeri foi a segunda principal espécie marinha desembarcada em 2011, colocando o Estado como principal produtor do crustáceo. O cenário mundial é de preocupação quanto a oferta de alimentos inócuos. No Brasil, o principal parâmetro utilizado na avaliação da qualidade do pescado in natura é o s...

Objective: The aim of this study was to compare the effects of medium light roast (MLR) and medium roast (MR) paper-filtered coffee on cardiovascular risk factors in healthy volunteers. Methods: This randomized crossover trial compared the effects of consuming three or four cups (150 mL) of MLR or MR coffee per day for 4 wk in 20 healthy volunte...

We compared the effects of medium light roast (MLR) and medium roast (MR) paper-filtered coffee on antioxidant capacity and lipid peroxidation in healthy volunteers. In a randomized crossover study, 20 volunteers consumed 482 ± 61 ml/day of MLR or MR for four weeks. Plasma total antioxidant status (TAS), oxygen radical absorbance capacity (ORAC), o...