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Vitamin C in Walnuts


THE fact that unripe walnuts (Juglans regia) contain very large amounts of vitamin C appears to have been first reported by Gergelezhiu1 in 1937. This remarkable observation that a fruit as large as the walnut contains 1,000–3,000 mgm. of vitamin C per 100 gm. appears to have been overlooked in English-speaking countries although the findings have since been confirmed by German workers2. It has been shown by the Russian author that the vitamin C content is at its highest at the stage of development when the kernel is soft and just before the formation of the shell.

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  1. 1

    Gergelezhiu, Bull. App. Bot., Genetics, Plant Breeding, U.S.S.R., Supp. 84, 2, 206 (1937); Konservnaya Prom., 4, 15 (1938); C. R. Acad. Sci., U.S.S.R., 21, 246 (1938); Khim. Referat. Zhur, 2, No. 1, 50 (1939).

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PYKE, M., MELVILLE, R. & SARSON, H. Vitamin C in Walnuts. Nature 150, 267–268 (1942).

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