Reference

Spectrophotometric method for determining the content of residual fatty substances of washed wool

Spectrophotometric method for determining the content of residual fatty substances of washed wool. Luchian, Alexandrina; Musat, Ioana Cristina; Tuculescu, Floarea (Institutul de Cercetari Textile, Rom.). Rom. RO 83757 B 30 Apr 1984, 3 pp. (Romanian). (Romania). CODEN: RUXXA3. CLASS: IC: G01N031-22. APPLICATION: RO 82-106680 19 Feb 1982. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) Section cross-reference(s): 80 The fat content of washed wool is detd. by dyeing a sample with a fat-sol. dye (C.I. 11020 [60-11-7] or C.I. 12055 [842-07-9]), followed by desorption of the dye with petroleum ether and photometry of the desorbed dye. Thus, a 5-g sample was dried at 105° and treated with 100 mL 0.05 g/L C.I. 11020-MeOH soln. After 20 min, the sample was removed, dried on filter paper, treated with 50 mL petroleum ether, and photometrically analyzed at 500 nm. A linear optical-d.-vs.-concn. relation existed in the 0.05-0.35 mg/mL range. A formula was given for calcn. of the fat content from the optical d.

Effects of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) on metabolism of N,N-dimethyl-4-aminoazobenzene (DAB) by rat liver microsomes

Effects of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) on metabolism of N,N-dimethyl-4-aminoazobenzene (DAB) by rat liver microsomes. Levine, Walter G. (Dep. Mol. Pharmacol., Albert Einstein Coll. Med., Bronx, NY 10461, USA). Res. Commun. Chem. Pathol. Pharmacol., 46(1), 113-20 (English) 1984. CODEN: RCOCB8. ISSN: 0034-5164. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Section cross-reference(s): 17 The antioxidants, BHA [25013-16-5] and BHT [128-37-0], inhibited the N-demethylation and ring hydroxylation of DAB (I) [60-11-7] by liver microsomes from untreated and phenobarbital (PB)-treated rats. BHA was somewhat more potent in this regard than BHT. Microsomal NADPH oxidase [9032-22-8] from PB-treated rates was stimulated by BHA but control microsomal activity was unaffected. Glutathione did not appreciably reverse the inhibitory effect of BHA on DAB metab. and had no effect on NADPH oxidase activity. Thus, inhibition of DAB metab. by BHA cannot be accounted for by interaction with NADPH oxidase, particularly in untreated microsomes. It more likely affects 31 species of cytochrome P 450.