Persian Walnut

Abstract

Persian walnut ( Juglans regia L.) has been cultivated for nuts and timber for thousands of years. Commercially, the major centers of production are China, the United States, and Europe. Worldwide, walnut production is valued at over $2 billion per year. Walnuts are very high in nutritional content, containing up to 24% protein and up to 70% fats, most of which are polyunsaturated. Several studies have demonstrated the health benefits derived from a diet that includes walnuts. As is true for many heterozygous tree crops, traditional breeding and selection of new walnut cultivars is slow and resource intensive. Therefore, techniques including micropropagation, somatic embryogenesis, and transgenic technology have been developed to speed the incorporation of desirable traits, such as pest and disease resistance, and to clonally propagate select progeny, speeding up the time in which new cultivars can be released to the growers. Transgenic rootstocks will show the greatest promise. However, it is unlikely that transgenic scion cultivars will be commercially available unless there is widespread consumer acceptance.

A Comparative Review on the Extraction, Antioxidant Content and Antioxidant Potential of Different Parts of Walnut (Juglans regia L.) Fruit and Tree

“…Walnut is an appreciated crop because the nut is very popular and widely consumed. Green walnut, shell, husk, kernel, bark, root, and leaves have been extensively used in the pharmaceutical and cosmetic industries [19]. J. regia L. is recognized as a rich source of different valuable chemicals because the kernel, fresh green fruit, husk, shell, skin, bark, leaves, and root are comprehensively studied to use in food, cosmetic and pharmaceutical industries.…”

The double effect of walnut septum extract (Juglans regia L.) counteracts A172 glioblastoma cell survival and bacterial growth

“…Juglans regia L. ( J. regia ), the common walnut, belongs to the Juglandaceae family and is rich, in all parts, in various chemical products, with antimicrobial, anti-biofilm, anti-inflammatory and anti-oxidant activities ( 3 , 4 ). Accordingly, the fresh green fruit, the peel, the skin, the leaves, the bark and the root have been widely used in food, cosmetic and pharmaceutical indus-tries ( 5 ). The brown and thin leathery covering of the kernel contains a high concentration of phenolic compounds and protects the kernel from microbial attack ( 6 ).…”

Growth Optima and Supply-Chain of the Walnut Crop in India

“…Therefore, Jammu and Kashmir enjoy a monopoly in production, acreage, and productivity of walnuts in the country. However, this is extremely low when compared to European and North American counterparts, where transgenic rootstocks have already shown the greatest promise (Britton et al, 2009).…”