RESUMO
The juçara palm tree produces a small spherical and black-purple fruit similar to açaí. It is rich in phenolic compounds, especially anthocyanins. A clinical trial evaluated the absorption and excretion of the main bioactive compounds in urine and the antioxidant capacity in serum and erythrocytes of 10 healthy subjects after juçara juice intake. Blood samples were collected before (0.0 h) and 0.5 h, 1 h, 2 h, and 4 h after a single dose (400 mL) of juçara juice, while urine was collected at baseline and 0-3 and 3-6 h after juice intake. Seven phenolic acids and conjugated phenolic acids were identified in urine deriving from the degradation of anthocyanins: protocatechuic acid, vanillic acid, vanillic acid glucuronide, hippuric acid, hydroxybenzoic acid, hydroxyphenylacetic acid, and ferulic acid derivative. In addition, kaempferol glucuronide was also found in urine as a metabolite of the parent compound in juçara juice. Juçara juice caused a decrease in the total oxidant status of serum after 0.5 h in comparison to baseline values (p < 0.05) and increased the phenolic acid metabolites excretion. This study shows the relationship between the production of metabolites of juçara juice and the total antioxidant status in human serum, indicating evidence of its antioxidant capacity.
Assuntos
Antioxidantes , Euterpe , Humanos , Antocianinas , Eritrócitos , Frutas , Glucuronídeos , FenóisRESUMO
OBJECTIVE: To evaluate the effects of moderate-term açaí and juçara juice intake on fasting glucose, lipid profile, and oxidative stress biomarkers in healthy subjects. METHODS: A randomized cross-over study was performed with 30 healthy adults. The subjects were assigned to drink 200 mL/day of açaí or juçara juice for four weeks with a 4-week washout period. Before and after each nutritional intervention, blood samples were obtained to evaluate the outcomes: fasting glucose, total cholesterol, triglycerides, high-density lipoprotein-cholesterol (HDL-c), low-density lipoprotein-cholesterol (LDL-c), small, dense LDL-c (sd-LDL-c), total antioxidant capacity (TAC), total oxidant status (TOS), oxidative stress index (OSI), uric acid, and activity of the enzymes superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx). RESULTS: After four weeks, açaí and juçara juices increased the concentrations of HDL-c by 7.7% and 11.4%, respectively (P < 0.05). In addition, açaí juice intake promoted significant increases in TAC (66.7%), CAT (275.1%), GPx (15.3%), and a decrease in OSI (55.7%) compared to baseline (P < 0.05 for all). Juçara juice intake significantly increased CAT activity (~15.0%) in relation to baseline. No significant intergroup differences were observed for any outcomes (P > 0.05). CONCLUSION: The results indicated a positive impact of regular consumption of açaí and juçara juices on the HDL-c levels, as well as on the antioxidant enzyme activities, which may contribute to cardiovascular health.
Assuntos
Antioxidantes/administração & dosagem , HDL-Colesterol/sangue , Ingestão de Líquidos/fisiologia , Euterpe , Sucos de Frutas e Vegetais , Adulto , Biomarcadores/sangue , Glicemia/análise , Colesterol/sangue , LDL-Colesterol/sangue , Estudos Cross-Over , Feminino , Voluntários Saudáveis , Humanos , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo , Oxirredutases/sangue , Triglicerídeos/sangue , Ácido Úrico/sangue , Adulto JovemRESUMO
The palm tree Euterpe edulis, known as juçara, produces spherical and purple fruits, similar to those of the Euterpe oleracea and Euterpe precatoria palm trees, from which the common name açaí originates. Juçara fruit has been gaining prominence in the scientific world for its interesting nutritional composition, which is rich in antioxidants, and for its sustainable production model. Recently, relevant biological activities have been associated with the juçara fruit, and its use in alimentation has become an important nutritional, environmental, and economic alternative. The aim of this review is to compile recent scientific data about the phytochemical characterization and biological activities of E. edulis. A review of the literature was conducted in two electronic databases, Medline and Science Direct. The eligibility criteria were as follows: phytochemicals characterize of the E. edulis fruits and evaluate biological effects in vitro or in vivo with pulp, extract, juice, or product of juçara fruits. Investigations were excluded if they used other parts of the plant (seeds), did not assess biological activities, or have tested methodologies for compound extraction. From the identified reports, 25 articles were eligible for this study. The promotion of health benefits related to juçara fruits seems to have improved antioxidant activity in vivo, benefits to lipid and glycemic profiles, and modulation of inflammatory status in experimental studies in animals.
Assuntos
Antioxidantes/farmacologia , Euterpe/química , Frutas/química , Compostos Fitoquímicos/farmacologia , Antioxidantes/química , Antioxidantes/isolamento & purificação , Promoção da Saúde , Compostos Fitoquímicos/química , Compostos Fitoquímicos/isolamento & purificação , Sementes/químicaRESUMO
Patients undergoing breast cancer treatment are susceptible to changes in eating behavior and nutrition status, thus making nutrition education relevant. Based on the World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) guide, with recommendations for cancer prevention released in 2007, the present study aimed to evaluate the effectiveness of educational nutritional intervention for women with breast cancer undergoing treatment while adhering to the 2007 WCRF/AICR guidelines. A nonrandomized clinical trial was conducted with a population composed of female patients, divided in intervention (IG, n = 18) and comparison (CG, n = 68) groups. Data were evaluated at baseline and after treatment/nutritional intervention. The IG participated in the intervention program for 12 mo by biweekly phone calls, personal meetings, and monthly handouts, while targeting the intake of at least 400 g/day of fruits and vegetables, and no more than 500 g/week of red or processed meats. The recommended adherence to physical activity and food intake was evaluated in compliance with the guidelines. The IG improved their adherence to the guidelines and there was a significant decrease in consumption of animal food (-43.9%) and alcoholic drinks (-0.2 g ethanol/d) and increase in plant food intake (+65.4%). Most women in both groups were sedentary and therefore violated the guidelines. The CG presented an increase in body mass index (+1.0 kg/m2) and waist circumference (+1.9 cm), while no change was observed in the IG. These findings are promising as nutritional intervention for women undergoing breast cancer treatment contributed positively to improving their adherence to the WCRF/AICR guidelines.