The primary goal of the Walnut Improvement Program, which was initiated in 1982 as a cooperative effort between USDA-ARS and U.C. Davis, is to develop germplasm with increased resistance or tolerance to the two major diseases limiting commercial production of Persian walnuts. These are the blackline and the Phytophthora root and crown rot diseases. Also under the auspices of this program are th...

Type 2 diabetes mellitus is associated with an increased risk of coronary heart disease, reflected in the presence of abnormal lipid profiles. Increasing the intake of polyunsaturated fat at the same time as reducing saturated fat can alleviate these risk factors. Including walnuts in a 'whole of diet' approach to managing fat consumption can help to ensure that the desired fatty acid profile i...

oxidative stability of walnut (juglansregia l.) was evaluated over a period of 1 year storage in various conditions. the whole walnuts, walnut kernels, walnut chopped kernels, walnut kernels packaged in polyethylene (pet) under vacuum and poly propylene (pp) contain of co2 were kept in a normal condition (temperature, 19-30˚с and relative humidity (rh), 35-45%). the whole walnuts and walnut ker...

Radio frequency (RF) heating has been explored as a potential non-chemical method to control insects in harvested walnuts and as a quarantine treatment for ‘Bing’ sweet cherries. Walnuts were heated to 50 to 90°C. Heating walnuts to 55°C or higher resulted in 100% mortality of fifth instar navel orangeworm, and heating to 80°C had no effect on walnut quality. Moisture content had a significant ...

Annual and perennial weed control trials were retreatedin Butte, Solano and Yolo counties. The diversified locations continue to provide a vital basis for applicable information on walnut tree tolerance to herbicides and on weed control efficacy. Herbicidal control of a wide spectrum of annual or perennial grass and broadleaf plants has been evaluated for the winter and summer periods of 1980. ...

Research into practical control methods for carpenterworm, Prionoxystus robiniae (Peck), a large wood boring larva, was continued. Observations indicate this pest primarily attacks older trees of the Hartley variety that are infected with deep bark canker, a stress-related bacterial disorder. Carpenterworm (CW) also attacks the Franquette variety. Hartley orchards with substantial deep bark can...

Studies consistently show the beneficial effects of eating nuts, but as high-energy foods, their regular consumption may lead to weight gain. We tested if daily consumption of walnuts (approximately 12 % energy intake) for 6 months would modify body weight and body composition in free-living subjects. Ninety participants in a 12-month randomized cross-over trial were instructed to eat an allott...

Walnut (Juglans regia L.) is a tree with significant economic value and usage for human health and various food industries. However, fresh walnut kernels are a less widespread product than the dried kernels. This study aimed to determine the fresh walnut kernel properties including, fatty acid composition, proximate composition, total phenolics (TPs), total antioxidant capacity (TAC), acidic, p...

BACKGROUND Walnuts significantly decrease total and low-density lipoprotein cholesterol in normo- and hypercholesterolemic individuals. No study to date has evaluated the effects of walnuts on cholesterol efflux, the initial step in reverse cholesterol transport, in macrophage-derived foam cells (MDFC). The present study was conducted to investigate the mechanisms by which walnut oil affects ch...