Tartaric acid acidification with

Food (soybean and soybean products) Sample mixed with water, lead nitrate, tartaric acid, and anti-forming agent acidification and distillation treatment of distillate with pyridine-barbituric acid Spectrophotometry (total cyanide) No data 32-80 Honig et al. 1983... 

Preparation of the jcy/o-configurated deoxyimino sugars 805 and 807 from 802 or 806 illustrates the value of tartaric acid in enantiospecific syntheses of valuable target molecules. Ozonolysis of 802 followed by reduction with sodium borohydride in methanol provides 803. Subsequent borane-dimethylsulfide—THF complex reduction, OTBS deprotection with 60% aqueous acetic acid, and purification with Amberite IRA400(OH) resin provides, after acidification, 804 in 75% yield. Catalytic debenzylation in the presence of palladium hydroxide occurs quantitatively to afford (27, 3/ ,4R)-2-(2-hydroxyethyl)-3,4-dihydroxypyrrolidine hydrochloride (805) in an overall yield of 53% (Scheme 176). 

Table 1.10. Composition of Chardonnay wines after tartaric stabilization, depending on the time of acidification (addition to must or wine after malolactic fermentation). Cuvees were acidified with 1 g/1 tartaric acid and second pressings with 1.5 g/1. (Dartiguenave, 1998)...

European legislation does not impose must deacidification limits, but there is a limit of 1 g/1 of the total acidity as tartaric acid for wine. Table wines must have a minimum total acidity of 4.5 g/1 as tartaric acid. In any case, this treatment must be declared and cannot be combined with an acidification. 

Benitez J.G., Grandal-Delgado M.M. and Martin J.D. (1993) Study of the acidification of sherry musts with gypsum and tartaric acid. Am. J. Enol. Vitic., 44, 400-404. 

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