Reference

Effect of different solvents on the extraction of protein fractions of beans (Phaseolus vulgaris)

Effect of different solvents on the extraction of protein fractions of beans (Phaseolus vulgaris). Gomez-Brenes, Roberto A.; Nunez, Elena Isabel; Bressani, Ricardo; Braham, J. Edgar (Inst. Nutr. Cent. America Panama, Guatemala, Guatemala). Arch. Latinoam. Nutr., 33(3), 503-18 (Spanish) 1983. CODEN: ALANBH. ISSN: 0004-0622. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) The effect of different solvents on the extn. of protein fractions in beans was studied. Black bean protein was extd. with distd. water, 0.01M NaOH, 0.05M NaCl, and 70% EtOH. 64-17-5 and 1310-73-2 which are cas registry numbers are also used here. Optimum conditions for the best extn. and fractionation of proteins were 1 h agitation at room temp., 3 successive extns. with the same solvent, and a ratio of solid to solvent of 1:20 wt./vol. The effect of 24 different sequences of solvents upon the extn. of protein was also investigated. The best sequence of solvents for extg. the protein was that where NaOH constituted the first solvent; this sequence, however, had the disadvantage of extg. all the protein from the seed, making it impossible to sep. other protein fractions by another solvent. If the purpose of the extn. was to sep. different protein fractions, the best sequence of solvents was distd. water or NaCl in the first place, followed by EtOH and NaOH. The need for using standardized methodol. for the fractionation of protein from seeds in order to obtain comparable data between research labs. is emphasized. .

Poly(phenylene oxides)

Poly(phenylene oxides). Burzin, Klaus; Bartmann, Martin; Bax, Hanns Joerg; Ribbing, Wilfried (Chemische Werke Huels A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3224692 A1 5 Jan 1984, 9 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08G065-44. APPLICATION: DE 82-3224692 2 Jul 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Polyoxyphenylenes with relative viscosity change (J-value) (CHCl3, 25°) >50 mL/g are prepd. 7447-39-4 and 1310-73-2 are also in the experiment. by polymg. 2,6-disubstituted phenols in the presence of Cu amine complexes and morpholine.HBr (I) [6377-82-8]-alkali metal or alk. earth hydroxide activators. Thus, passing 200 L/h air into a soln. of 2,6-dimethylphenol 100, CuCl2 2, morpholine [110-91-8] 200, I 5, 50% NaOH 4, and PhMe 900 g stirred at 30-35° for 90 min. gave a polymer [25134-01-4] with J-value 58 mL/g, compared with 35 with no activator. .