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NUTS STOCK FOOD PHOTOS, STOCK FOOD PICTURES & FOOD PHOTO ART PRINTS
Stock photos & stock pictures gallery of fresh nuts.
A nut is a hard-shelled fruit of some plants having an indehiscent seed. While a wide variety of dried seeds and fruits are called nuts in English, only a certain number of them are considered by biologists to be true nuts. Nuts are an important source of nutrients for both humans and wildlife.
Nuts are a composite of the seed and the fruit, where the fruit does not open to release the seed. Most seeds come from fruits, and the seeds are free of the fruit, unlike nuts like hazelnuts, hickories, chestnuts and acorns, which have a stony fruit wall and originate from a compound ovary. Culinary usage of the term is less restrictive, and some nuts as defined in food preparation, like pistachios and Brazil nuts, are not nuts in a biological sense. Everyday common usage of the term often refers to any hard walled, edible kernel, as a nut.
Walnuts (genus Juglans) are plants in the family Juglandaceae. The nut kernels of all the species are edible, but the walnuts most commonly available in shops are from the Persian walnut, the only species which has a large nut and thin shell; black walnut species are more difficult to crack and remove from the shell. One horticultural form selected for thin nut shells and hardiness in temperate zones is sometimes known as the ‘Carpathian’ walnut. Two-thirds of the world export market and 99% of the US commercial production of English walnuts is grown in California’s Central Valley and in Coastal Valleys, from Redding in the north to Bakersfield in the south
Several epidemiological studies have revealed that people who consume nuts regularly are less likely to suffer from coronary heart disease (CHD). Nuts were first linked to protection against CHD in 1993. Since then many clinical trials have found that consumption of various nuts such as almonds and walnuts can lower serum LDL cholesterol concentrations. Although nuts contain various substances thought to possess cardioprotective effects, scientists believe that their Omega 3 fatty acid profile is at least in part responsible for the hypolipidemic response observed in clinical trials.
In addition to possessing cardioprotective effects, nuts generally have a very low glycemic index (GI). Consequently, dietitians frequently recommend nuts be included in diets prescribed for patients with insulin resistance problems such as diabetes mellitus type 2.
One study found that people who eat nuts live two to three years longer than those who do not. However, this may be because people who eat nuts tend to eat less junk food.
Nuts contain the essential fatty acids linoleic and linolenic acids, and the fats in nuts for the most part are unsaturated fats, including monounsaturated fats.
Buy all the stock photos in this gallery on line as Royalty Free or Rights managed stock photo. The stock pictures & stock images are all high resolution digital stock photos made award winning professional photographer Paul Williams.
Photo Art prints are also available to buy on line in large to small print formats for framing as art works for home, restaurant, pubs, office art , or commercial art.
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