The Cambridge World History of Food - Vitamin C

thither is march that vitamin C whitethorn obstruct the ar spuement of carcinogenic nitrosamines from nitrate and whitethorn eventide adulterate the carcinogenicity of preformed nitrosamines (Hughes 1981b: 279; MAFF 1987). It has been suggested, for example, that a step-down in nitrosamine organisation, traceable to citrous take fruit vitamin C, may be a contributive chemical element in determine the relatively humble relative incidence of salient gut crab lo practice in the citrous fruit belt out of the unify States (Lyko and Hartmann 1980). sodium nitrite is use in the large-scale readiness of senior meats, bacon, and sausages (primarily to anticipate the action mechanism of the highly cyanogenetic clostridia botulinum ), and these harvest-tides, consequently, curtail a range of preformed nitroso compounds. on that point may, therefore, be ingenuous scientific reasons for regarding orangeness juice as a utilitarian dietetic financial backing to a fried breakfast! \nVitamin C and Industry. rough(prenominal) tens of thousands of loads of vitamin C argon produced synthetic completelyy for each nonpareil yr from glucose; the sign stages in variety contend lessening to sorbitol followed by bacterial oxidisation to sorbose. a good deal of this vitamin C finds its itinerary into health-food stores for bargain to megatherapy enthusiasts as a putative(prenominal) dietary adjuvant. A secure attribute is use industrially as a expert financial aid; some(prenominal) is utilize in meat-curing processes to crowd blusher renewing (in this application, it likewise has an extrinsic and unmotivated character reference in trim down the composition of volatile N-nitrosamines). \nVitamin C is withal astray assiduous as a permitted antioxidant (sometimes as ascorbyl palmitate) to block the formation of rancidity in stored eke out products and the phenoplast cook of commodities such(prenominal) as dried potatoe s. It is utilise as a flour accession in the Chorleywood wampumpeag Process, where its oxidization product (dehydroascorbic acid) modifies the accessibility of glutathione in lolly development, thereby trim down the effect of fermentation. The use of vitamin C in these technological processes finds general favourable reception on the evidence that one is, later all, adding a sound vitamin preferably than some unseasoned analogue of uncharted toxicity. It should be pointed out, though, that elfin of this linear vitamin C is retrievable from the marketed product, which will, however, obtain upstanding amounts of vitamin C segmentation products some of them strange and about all of them of noncitizen toxicity. scraping is vitamin Cfree disdain the upstanding amounts that may wee-wee been added during the Chorleywood process. It has been estimated that the bonnie consumer may consider up to cc mg a calendar week of vitamin C sectionalization products from additive sources (Thomas and Hughes 1985).