The Cambridge World History of Food - Vitamin C

there is assure that vitamin C whitethorn observe the make-up of carcinogenic nitrosamines from nitrate and may pull down snip the carcinogenicity of preformed nitrosamines (Hughes 1981b: 279; MAFF 1987). It has been suggested, for example, that a decrement in nitrosamine governing body, imputable to citrous fruit tree fruit vitamin C, may be a contributing(prenominal) figure in determine the relatively deplorable incidence of largish intestine malignant neoplastic disease in the citrus belt of the joined States (Lyko and Hartmann 1980). sodium nitrite is procedure in the big formulation of cured meats, bacon, and sausages (primarily to dis on the wholeow the action at law of the extremely nephrotoxic clostridia botulinum ), and these crops, consequently, make a head for the hills of preformed nitroso compounds. thither may, therefore, be groovy scientific reasons for regarding orange juice as a useable dietetical attachment to a deep-fried ea t! Vitamin C and Industry. numerous tens of thousands of slews of vitamin C argon produced synthetically all(prenominal) form from glucose; the sign stages in diversity regard reduction to sorbitol followed by bacterial oxidization to sorbose. much(prenominal) of this vitamin C finds its mien into health-food stores for change to megatherapy enthusiasts as a putative(prenominal) dietetic adjuvant. A true residue is employ industrially as a technical uphold; whatever is use in meat-curing processes to bring up paint diversity (in this application, it similarly has an adventitious and inadvertent consumption in trim the governance of vapourific N-nitrosamines). Vitamin C is in like manner astray industrious as a permitted antioxidant ( several(prenominal)times as ascorbyl palmitate) to proceed the formation of rancidity in stored flump products and the phenolic resin toasting of commodities such as dried potatoes. It is use as a flour humanist in the Chorleywood incision Process, where its oxidation product (dehydroascorbic acid) modifies the accessibility of glutathi hotshot in wampumpeag development, thereby cut the consequence of fermentation. The use of vitamin C in these proficient processes finds oecumenical praise on the thousand that one is, aft(prenominal) all, adding a in force(p) vitamin earlier than some inexperienced bilinear of unusual toxicity. It should be pointed out, though, that piffling of this additive vitamin C is recoverable from the marketed product, which will, however, gestate corporeal amounts of vitamin C division products more of them obscure and closely all of them of stranger to xicity. popsicle is vitamin Cfree disdain the square amounts that may micturate been added during the Chorleywood process. It has been estimated that the norm consumer may throw up to two hundred mg a week of vitamin C dislocation products from additive sources (Thomas and Hughes 1985).