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OverviewV t m n are rg n (carbon-containing) nutr nt bt n d thr ugh th d t and essential n small m unt for n rm l m t b l r t n . V t m n n t b th t l t and rt nt n the chemical r t n. A catalyst a ub t n th t n r the r t of a reaction-by decreasing th t v t n n rg r u r d-w th ut t lf b ng rm n ntl h ng d t the nd of th chemical r t n. The b d typically mbl v t m n-d nd nt catalysts fr m a v r t f building bl k , n lud ng m n acids, ug r , phosphates, nd vitamins. E h v t m n t ll used in mult l d ff r nt catalysts nd th r f r h mult l fun t n . Like enzymes, which r l catalysts, vitamins are nt l n m ll quantities. H w v r, nz m r m d b the b d , whereas v t m n are n rm ll obtained through th f d th t we eat. Vitamins r normally nv rt d in th b d to nz m . C nz m r organic, n n- r t n molecules th t r fun t n l parts f n nz m , which r g n r ll r t n . V t m n h w th m rt n of b l n n hum n l f . One n n um n m l nd drink w t r t ddr n ' hung r nd u n h one's thirst. But w th ut b l n n one's d t, n w ll uff r fr m disease. F r example, one needs t consume l nt , such as fru t nd v g t bl , t obtain uff nt m unt of nt l vitamin C, sailors d v r d wh n they f l d t t k fr h f d on their v g . V t m n can b classified as th r w t r lubl , wh h m n th d lv easily in w t r, r f t lubl , wh h m n they are b rb d thr ugh the nt t n l tr t with the help f lipids. Unt l th 1900s, vitamins uld only b bt n d b eating f d. H w v r, th are n w mm r ll v l bl . Th r r a f w vitamins th t w bt n b th r m n th n d r tl fr m the d t: f r example, m r rg n m n the nt t n - mm nl kn wn as gut fl r - r du vitamin K nd b t n, wh l n f rm of vitamin D is synthesized n th k n w th th help f natural ultr v l t sunlight. Some v t m n n l be obtained fr m r ur r th t can b obtained n the diet. Examples n lud vitamin A, wh h n be produced from beta r t n nd n n from th amino acid tr t h n. Full Product DetailsAuthor: Sarah A StonesPublisher: Independently Published Imprint: Independently Published Dimensions: Width: 14.00cm , Height: 0.40cm , Length: 21.60cm Weight: 0.086kg ISBN: 9798676365646Pages: 66 Publication Date: 18 August 2020 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: Temporarily unavailable  The supplier advises that this item is temporarily unavailable. It will be ordered for you and placed on backorder. Once it does come back in stock, we will ship it out to you. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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