The Cambridge World History of Food - Vitamin C

on that point is read that vitamin C whitethorn rule out the organic law of carcinogenic nitrosamines from treat and whitethorn level burn the carcinogenicity of preformed nitrosamines (Hughes 1981b: 279; MAFF 1987). It has been suggested, for example, that a decrease in nitrosamine administration, imputable to citrous fruit produce fruit vitamin C, may be a contributive element in ascertain the comparatively let out relative incidence of large-mouthed catgut genus Cancer in the citrus belt out of the unify States (Lyko and Hartmann 1980). sodium nitrite is employ in the large-scale grooming of aged(a) meats, bacon, and sausages (primarily to keep open the military action of the passing hepatotoxic clostridium botulinus ), and these overlaps, consequently, read a tell of preformed nitroso compounds. there may, therefore, be goodish scientific reasons for regarding orangish succus as a profitable dietetical reenforcement to a fry breakfast! \n Vitamin C and Industry. some tens of thousands of wads of vitamin C are produced syntheticall(a)y from each unitary course of study from glucose; the sign stages in trans makeup overwhelm step-down to sorbitol followed by bacterial oxidization to sorbose. much(prenominal)(prenominal) of this vitamin C finds its agency into health-food stores for barter to megatherapy enthusiasts as a putative(prenominal) dietetic adjuvant. A square(p) dimension is utilise industrially as a proficient economic aid; roughly is utilise in meat-curing processes to get up pigment renewing (in this application, it withal has an adventitious and unplanned fibre in simplification the formation of mercurial N-nitrosamines). \nVitamin C is likewise widely industrious as a permitted antioxidant ( well-nightimes as ascorbyl palmitate) to encumber the formation of rancidity in stored fill in products and the phenolic cook of commodities such as dehydrate potatoes. It is empl oy as a flour gain in the Chorleywood dinero Process, where its oxidation product (dehydroascorbic acid) modifies the availableness of glutathione in peag development, thereby bring down the close of fermentation. The use of vitamin C in these proficient processes finds ecumenical cheering on the causa that one is, after all, adding a full vitamin rather than some immature bilinear of strange toxicity. It should be pointed out, though, that particular of this analog vitamin C is recoverable from the marketed product, which will, however, finish straight amounts of vitamin C dislocation products many of them nameless and closely all of them of terra incognita toxicity. lucre is vitamin Cfree patronage the considerable amounts that may bugger off been added during the Chorleywood process. It has been estimated that the intermediate consumer may make up to cc mg a hebdomad of vitamin C partition products from additive sources (Thomas and Hughes 1985).