Design and development of meat-based functional foods with walnut: Technological; nutritional and health impact
With growing understanding of the relationship between diet and health has come the emergence of so-called functional foods. The idea of using food for health purposes and not merely as a source of nutrients opens up a whole new field in the meat industry. In addition to traditional presentations; there a number of ways in […]
The effect of a calorie controlled diet containing walnuts on substrate oxidation during 8-hours in a room calorimeter
OBJECTIVE: Dietary macronutrient proportions affect substrate utilization; but in practice people consume foods. We hypothesized that in overweight adults; a calorie controlled diet based on core foods and including walnuts may be advantageous in promoting greater use of fat stores. METHODS: This crossover study tested the effects of diet-related energy expenditure and fat oxidation in […]
Antioxidant activities and chemical profiles of pyroligneous acids from walnut shell
Three kinds of pyroligneous acids were prepared from walnut shell at different temperature ranges (low: 90~150 °C; SP1; middle: 151~310 °C; SP2; and high: 311~550 °C; SP3). The chemical profiles of the acids were established by GC-MS. Antioxidant activities of the acids were investigated from the aspects of DPPH free radical scavenging capacity; hydroxyl free […]
Ellagic acid and polyphenolics present in walnut kernels inhibit in vitro human peripheral blood mononuclear cell proliferation and alter cytokine production
Tree nuts; including walnuts; are important elicitors of food allergy. We examined the ability of walnut kernel polyphenolics and purified ellagic acid (EA) to modulate cytokine production and cellular proliferation from stimulated human peripheral blood mononuclear cells (PBMC). IL-13 and TNF-alpha production decreased while no change was observed in IL-4 production. Paradoxically; EA and the […]
Effect of whole walnut and walnut-skin extracts on oxidant status in mice
OBJECTIVE: To evaluate the effect of the intake of whole walnuts and walnut fractions on the oxidant status in mice. METHODS: Thirty-six C57BL/6J male mice were randomized to be fed one of three diets: 1) a standard diet (control group); 2) a standard diet with 10% of whole walnuts (walnut-diet group); or 3) a standard […]
Effects of walnut consumption on endothelial function in type 2 diabetic subjects: a randomized controlled crossover trial
OBJECTIVE: To determine the effects of daily walnut consumption on endothelial function; cardiovascular biomarkers; and anthropometric measures in type 2 diabetic individuals. RESEARCH DESIGN AND METHODS: This study was a randomized; controlled; single-blind; crossover trial. Twenty-four participants with type 2 diabetes (mean age 58 years; 14 women and 10 men) were randomly assigned to one […]
Human cancer cell antiproliferative and antioxidant activities of Juglans regia L.
Several studies suggest that regular consumption of nuts; mostly walnuts; may have beneficial effects against oxidative stress mediated diseases such as cardiovascular disease and cancer. Walnuts contain several phenolic compounds which are thought to contribute to their biological properties. The present study reports the total phenolic contents and antioxidant properties of methanolic and petroleum ether […]
Grape Juice; Berries; and Walnuts Affect Brain Aging and Behavior
Numerous studies have indicated that individuals consuming a diet containing high amounts of fruits and vegetables exhibit fewer age-related diseases such as Alzheimer's disease. Research from our laboratory has suggested that dietary supplementation with fruit or vegetable extracts high in antioxidants (e.g. blueberries; strawberries; walnuts; and Concord grape juice) can decrease the enhanced vulnerability to […]
Effect of Polyphenol-Rich Extract from Walnut on Diet-Induced Hypertriglyceridemia in Mice via Enhancement of Fatty Acid Oxidation in the Liver
The kernel pellicles of walnut are rich in ellagitannins with antioxidative activity. A polyphenol-rich extract from walnuts (WP; 45% polyphenol) was prepared and evaluated for its hypolipidemic effect in high fat diet fed mice. Oral administration of WP (100 and 200 mg/kg) significantly reduced liver weight and liver and serum triglycerides (TG). Hepatic beta-oxidation in […]
Walnuts and fatty fish influence different serum lipid fractions in normal to mildly hyperlipidemic individuals: a randomized controlled study
BACKGROUND: Increased consumption of n-3 (omega-3) fatty acids decreases the incidence of coronary heart disease (CHD). OBJECTIVE: The objective was to determine whether walnuts (plant n-3 fatty acid) and fatty fish (marine n-3 fatty acid) have similar effects on serum lipid markers at intakes recommended for primary prevention of CHD. DESIGN: In a randomized crossover […]