Oxidative Stability of Tree Nut Oils
The oxidative stability of selected tree nut oils was examined. The oils of almond; Brazil nut; hazelnut; pecan; pine nut; pistachio; and walnut were extracted using two solvent extraction systems; namely; hexane and chloroform/methanol. The chloroform/methanol system afforded a higher oil yield for each tree nut type examined (pine nut had the highest oil content; […]
Elimination of Aspergillus parasiticus from nut surface with low pressure cold plasma (LPCP) treatment
Low pressure cold plasma (LPCP) using air gases and sulfur hexafluoride (SF(6)) was developed and tested for anti-fungal efficacy against Aspergillus parasiticus on various nut samples. Artificially A. parasiticus contaminated hazelnuts; peanuts; and pistachio nuts were treated with air gases plasma and SF(6) plasma for up to 20 min duration. The sterilizing effect of LPCP […]
Chemical composition; and antioxidant and antimicrobial activities of three hazelnut (Corylus avellana L.) cultivars
Hazelnut (Corylus avellana L.) is a very popular dry fruit in the world being consumed in different form and presentations. In the present work; three hazelnut cultivars (cv. Daviana; Fertille de Coutard and M. Bollwiller) produced in Portugal; were characterized in respect to their chemical composition; antioxidant potential and antimicrobial activity. The samples were analysed […]
A survey of the bacteriological quality of preroasted peanut; almond; cashew; hazelnut; and Brazil nut kernels received into three Australian nut-processing facilities over a period of 3 years
There is little information about bacteriological quality of preroasted kernels available in the public domain. An investigation of the bacteriological quality of preroasted peanut; almond; cashew; hazelnut; and Brazil nut kernels received into three Australian nut-processing facilities was performed over a period of 3 years. A total of 836 samples were analyzed for aerobic plate […]
Factors influencing fungal and aflatoxin levels in Turkish hazelnuts (Corylus avellana L.) during growth; harvest; drying and storage: A 3-year study
The levels aflatoxins in Turkish hazelnuts have been monitored over a 3-years period (2002-2004). Periodical sampling was made in 72 different orchards at different locations representative of the hazelnut-growing areas and post-harvest applications. Various parameters (aflatoxins; water activity; moulds) were analysed and environmental conditions (temperature and relative humidity) recorded during growing and at different stages […]
Dietary assessment in children adhering to a food allergen avoidance diet for allergy prevention.
Objective: The purpose of this investigation was to verify if avoidance of allergenic foods in children adhering to a food allergen avoidance diet from birth was complete and feasible; and whether dietary assessment can be used as a tool in predicting the outcome of double-blind; placebo-controlled food challenges (DBPCFCs). Design: Children adhering to an allergen […]
Evaluation of the microelement profile of Turkish hazelnut (Corylus avellana L.) varieties for human nutrition and health
In this study; the levels of boron (B); cobalt (Co); copper (Cu); chromium (Cr); iron (Fe); lithium (Li); nickel (Ni); selenium (Se) and zinc (Zn) microelements in 16 hazelnut samples were determined by inductively coupled plasma mass spectrometry and atomic absorption spectroscopy after microwave digestion; and are discussed for human nutrition and health. Significant differences […]
Chemical composition of hazelnuts (Corylus avellana L.) grown in New Zealand
Antioxidant phytochemicals in hazelnut kernel (Corylus avellana L.) and hazelnut byproducts.
Antioxidant efficacies of ethanol extracts of defatted raw hazelnut kernel and hazelnut byproducts (skin; hard shell; green leafy cover; and tree leaf) were evaluated by monitoring total antioxidant activity (TAA) and free-radical scavenging activity tests [hydrogen peroxide; superoxide radical; and 2;2-diphenyl-1-picrylhydrazyl (DPPH) radical]; together with antioxidant activity in a beta-carotene-linoleate model system; inhibition of oxidation […]
Effects of hazelnut-enriched diet on plasma cholesterol and lipoprotein profiles in hypercholesterolemic adult men.
Objective: Frequent consumption of nuts is associated with favorable plasma lipid profiles and reduced risk of coronary heart disease (CHD). This study was conducted to investigate the effects of hazelnut-enriched diet on plasma cholesterol and lipoprotein profiles in hypercholesterolemic adult men compared with baseline and control diet; and also to measure the anthropometric parameters; habitual […]