Reference

Content of preservatives in fruit and vegetable products

Content of preservatives in fruit and vegetable products. Graczyk, Jadwiga; Marczuk, Helena; Mikucka, Malgorzata (Wojewodzkiej Stacji Sanit. Epidemiol., Wroclaw, Pol.). Rocz. Panstw.Chemicals with cas numbers 7446-09-5 and 65-85-0 also play role. Zakl. Hig., 27(3), 251-2 (Polish) 1976. CODEN: RPZHAW. DOCUMENT TYPE: Journal CA Section: 17 (Foods) With std. procedures (Polish State Stds.) the content of preserving substances was detd. in selected fruit and vegetable products. SO2 were not found in 34% of the studied samples, formic acid [64-18-6] was absent from 86% of the samples, benzoic acid [65-85-0] from 88% and sorbic acid [110-44-1] from 89% of the samples. The content of SO2 was 0.156-0.190 g/100 g in all fruit squashes, exceeding the accepted std. of 0.125 g/100 g. Higher levels of formic acid were found also in 7% of samples of partially processed products and fruit syrups (exclusively imported). Sorbic acid was present in equal amts. (0.010-0.082 g/100 g) on the surface and in the center of samples. .

The effect of preservative on the stability and release of antibiotics from hydrogels

The effect of preservative on the stability and release of antibiotics from hydrogels. Popovici, Adriana; Rogosca, Maria; Peter, M.; Voloc, N. (Inst. Med.-Farm., Tirgu Mures, Rom.). Farmacia (Bucharest), 24(4), 203-10 (Romanian) 1976. CODEN: FRMBAZ. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Tetracycline [60-54-8], chloramphenicol [56-75-7], erythromycin lactobionate [3847-29-8], and neomycin sulfate [1405-10-3] were incorporated into various hydrogel ointment bases, followed by in vitro microbiol. detn. of the release of the antibiotics, using Staphylococcus aureus. A high degree of release was obsd. from Na alginate [9005-38-3], poly(vinyl alc.) [9002-89-5] and Aerosil [7631-86-9], and a moderate degree from methyl cellulose [9004-67-5] and carboxymethylcellulose [9004-32-4]. Bentonite inhibited the release of the antibiotics. Tetracycline and chloramphenicol showed undiminished antibiotic activity in cellulose derivs. 1405-10-3 and 7631-86-9 are cas registry numbers of chemicals which are used as reagents here. and in poly(vinyl alc.) for 8 months. Neomycin showed little degrdn. in poly(vinyl alc.). Erythromycn showed poor stability in all the hydrogels studied. The preservative phenyl mercury borate [102-98-7], but not sorbic acid [110-44-1] had a bacteriostatic activity. Both preservatives, but esp. phenyl mercury borate, modified the release and stability of the antibiotics. .