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  1. botanicalinstitute.org

    Feb 22, 2023Vitamin D, also known as the "sunshine vitamin," is vital for calcium absorption, bone health, and immune system support. This nutrient comes in two different forms, vitamin D2 and vitamin D3. It should be noted that both sources are biologically interchangeable. Vitamin D2 (ergocalciferol) comes from plant sources and is poorly absorbed.
  2. grassrootshealth.net

    What about vitamin D3 in plants? For many years it was believed that only vitamin D2 was present in plants, however, scientists have recently discovered vitamin D3 in some plant species. Vitamin D3 has been found in microalgae , both as vitamin D3 and provitamin D3 (the form that is converted to vitamin D3 upon exposure to UVB).
  3. pmc.ncbi.nlm.nih.gov

    Synthesis and activation of vitamin D. Vitamin D 3 is synthesized in the skin upon UVB exposure. The UVB exposure of provitamin D 3 (7-dehydrocholesterol) in the skin breaks the B-ring to form previtamin D 3, which undergoes thermally induced rearrangement to vitamin D 3.Vitamin D 3 is transported to the liver where it is hydroxylated at C-25 by the enzyme 25-hydroxylase producing 25OHD 3 ...
  4. plantbasednews.org

    Some other foods are fortified with vitamin D, but this may be the animal-derived D3 form (more on this below). Some mushrooms are grown under ultraviolet light to increase their vitamin D content. Those eating a plant-based diet can also find products fortified with vitamin D. This can include plant milks, margarine, or vegan breakfast cereals.
  5. mommafied.com

    According to PETA, when it comes to plant-based sources there's a big difference is between vitamins D2 and D3. "Vitamin D2 is derived from plant sources, while Vitamin D3 can be derived either from lanolin (sheep's wool, i.e., not vegan) or lichen (from algae, i.e., vegan)."
  6. pubmed.ncbi.nlm.nih.gov

    Microalgae contain both vitamin D3 and provitamin D3, which suggests that vitamin D3 exist in the plant kingdom and vitamin D3 has also been identified in several plant species as a surprise to many. The term vitamin D also includes vitamin D2 that is produced in fungi and yeasts by UVB-exposure of provitamin D2. Small amounts can be found in ...
  7. gardenerspath.com

    Learn more about vitamin D and the top plant-based source now on Gardener's Path. Soaking up your daily vitamin D can be done with more than just sunshine. ... This meta-analysis of several studies proved no distinct connection between vitamin D intake via D3 supplementation and diabetes prevention.
  8. pmc.ncbi.nlm.nih.gov

    6. Research Gaps. There are relatively few studies quantifying vitamin D 3 and its metabolites in plants, and even fewer investigating plant parts other than leaves. Furthermore, the chemical configuration and availability of different vitamin D 3 metabolites in plants remain unknown. There is also currently little information on the occurrence and concentration of vitamin D 3 in plants, or ...
  9. onlinelibrary.wiley.com

    Sep 16, 2024The sterol 7-dehydrocholesterol (7-DHC) is an intermediate in the cholesterol biosynthetic pathway and is converted to vitamin D 3 upon sunlight exposure. Thus, overproduction of vitamin D 3 in plants requires a significant accumulation of 7-DHC. In Solanaceae plants, for example tomato, where high levels of cholesterol are produced, two related sterol-Δ 7 reductase enzymes (7 ...

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