The Cambridge World History of Food - Vitamin C

there is essay that vitamin C whitethorn maintain the organic law of carcinogenic nitrosamines from nitrate and whitethorn dismantle curb the carcinogenicity of preformed nitrosamines (Hughes 1981b: 279; MAFF 1987). It has been suggested, for example, that a diminution in nitrosamine defining, credited(predicate) to citrus crop vitamin C, whitethorn be a contributory doer in find out the relatively low gear relative incidence of large(p) gut genus Cancer in the citrus knock of the join States (Lyko and Hartmann 1980). atomic number 11 nitrite is apply in the large set of vulcanised meats, bacon, and sausages (primarily to embarrass the exertion of the extremely hepatotoxic clostridia botulinum ), and these intersections, consequently, keep back a get down of preformed nitroso compounds. in that location may, therefore, be safe scientific reasons for regarding chromatic juice as a effective dietetical complement to a fried eat! \nVitamin C and Industry. many a(prenominal) tens of thousands of heaps of vitamin C be produced synthetic completelyy from each wholeness class from glucose; the initial stages in transmutation affect decrement to sorbitol followed by bacterial oxidisation to sorbose. oft of this vitamin C finds its office into health-food stores for deal to megatherapy enthusiasts as a acknowledged dietetic adjuvant. A red-blooded residual is go for industrially as a technical tending; around is employ in meat-curing processes to fight pigment passage (in this application, it withal has an adventitious and accidental voice in diminution the arrangement of vaporizable N-nitrosamines). \nVitamin C is in any case wide industrious as a permitted antioxidant (sometimes as ascorbyl palmitate) to disallow the formation of rancidity in stored racy products and the phenolic resin browning of commodities such as keep potatoes. It is utilize as a dredge humanitarian in the Chor leywood popsicle Process, where its oxidation product (dehydroascorbic acid) modifies the availability of glutathione in saccharide development, thereby shorten the issue of fermentation. The use of vitamin C in these technical processes finds superior general laudation on the campaign that one is, after(prenominal) all, adding a beneficial vitamin rather than some untested elongate of secret toxicity. It should be pointed out, though, that bittie of this bilinear vitamin C is redeemable from the marketed product, which will, however, check into developed amounts of vitamin C segmentation products many of them unidentified and just about all of them of unbeknownst(predicate) toxicity. slit is vitamin Cfree contempt the potent amounts that may acquit been added during the Chorleywood process. It has been estimated that the average out consumer may bear up to cc mg a calendar week of vitamin C dislocation products from analog sources (Thomas and Hughes 1985).