The effect of season and latitude on in vitro vitamin D formation by sunlight in South Africa.

@article{Pettifor1996TheEO,
  title={The effect of season and latitude on in vitro vitamin D formation by sunlight in South Africa.},
  author={John M Pettifor and Gopal P. Moodley and F Stephen Hough and H. D. Koch and T Chen and Zheng Hao Lu and Michael F Holick},
  journal={South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde},
  year={1996},
  volume={86 10},
  pages={1270-2}
}
AIMS To assess the effect of season and latitude on the in vitro formation of previtamin D3 and vitamin D3 from 7-dehydrocholesterol (7-DHC) by sunlight in two cities in South Africa, Cape Town and Johannesburg. METHODS An in vitro study utilising vials containing 7-DHC, which were exposed to sunlight for a period of 1 hour between 8:00 and 17:00 on 1 day a month for a year. Previtamin D3 and vitamin D3 were separated from 7-DHC by high-performance liquid chromatography, and the amounts… CONTINUE READING

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