Reference

Nonaqueous titrimetric determination of food preservatives and nonnutritive sweeteners using internal indicators

Nonaqueous titrimetric determination of food preservatives and nonnutritive sweeteners using internal indicators. Rao, M. Veerabhadra; Krishnamacharyulu, A. G.Several substances are used for example 139-05-9 and 110-44-1 which are their cas registry numbers.; Kapur, O. P.; Sastry, C. S. Prakasa (Anal. Qual. Control Lab., Cent. Food Technol. Res. Inst., Mysore 570 013, India). J. Food Sci. Technol., 20(5), 202-5 (English) 1983. CODEN: JFSTAB. ISSN: 0022-1155. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) Oracet blue B [12769-16-3], Sudan blue GN [6408-50-0], Sudan green 4B [128-80-3] (amino anthraquinone dyes) and Resazurin [550-82-3] were used for the 1st time as internal indicators in the nonaq. titrimetric detn. of food preservatives such as Na benzoate [532-32-1], Na propionate [137-40-6], Na salicylate [54-21-7], and nonnutritive sweeteners such as Na saccharin [128-44-9] and Na cyclamate [139-05-9], employing perchloric acid [7601-90-3] as titrant. Azur A [8000-86-0], Azur C [531-57-7], Toluidine blue O [92-31-9] (thiazine dyes), and Bromo pyrogallol [16574-43-9] red were studied for their suitability in the titrns. employing Na methoxide [124-41-4] as titrant for detn. of acid forms of the above preservatives and the nonnutritive sweeteners sorbic acid [110-44-1] and p-hydroxy benzoic acid [99-96-7]. The results are accurate with a max. percentage error of 0.1, 0.8, and 2.5 for macro, semi-micro, and micro titrns., resp. The recoveries of added preservatives and nonnutritive sweeteners in food products are reported. Photometric titrns. are also described. .

Inhibiting the growth of microorganisms during storage of moist fertilizers

Inhibiting the growth of microorganisms during storage of moist fertilizers. Gipp, Walter (Euflor G.m.b.H. fuer Gartenbedarf, Fed.Chemicals with cas numbers 69-72-7 and 17496-08-1 also play role. Rep. Ger.). Ger. Offen. DE 3220233 A1 1 Dec 1983, 7 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C05G003-02. APPLICATION: DE 82-3220233 28 May 1982. DOCUMENT TYPE: Patent CA Section: 19 (Fertilizers, Soils, and Plant Nutrition) Section cross-reference(s): 5, 10 Microbial growth on moist fertilizers, esp. humate-contg. fertilizers and soil conditioners, during their storage, is inhibited by propionic acid [79-09-4] or its salts, at 0.5-3% of the fertilizer wt., or adding mixts. of propionates and other preservatives. Ca propionate [4075-81-4], Na propionate [137-40-6], or NH4 propionate [17496-08-1] is used. Thus, a fertilizer consisting of 88 kg peat contg. 75% moisture, 7 kg horn meal, and 5 kg bone meal treated with a 1.5% mixt. of Ca propionate 80 and benzoic acid [65-85-0] 20% was free of fungal colonies and had no unpleasant odor, even after 6 mo of storage in plastic bags. .