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Titolo:
ISOLATION AND IDENTIFICATION OF THE CAUSATIVE FACTORS RESPONSIBLE FORCOLOR FIXATION IN RICE BRAN OIL
Autore:
KRISHNA AGG;
Indirizzi:
CENT FOOD TECHNOL RES INST,DISCIPLINE CONFECTIONERY & CONVENIENCE FOODS MYSORE 570013 KARNATAKA INDIA
Titolo Testata:
Journal of the American Oil Chemists' Society
fascicolo: 8, volume: 70, anno: 1993,
pagine: 785 - 788
SICI:
0003-021X(1993)70:8<785:IAIOTC>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Keywords:
COLOR FIXATION IN RICE BRAN OIL; DARK COLOR CONSTITUENT IN RBO; OXIDIZED MONOGLYCERIDE IN RBO; RICE BRAN OIL; SYNERGIST FOR INCREASING VISCOSITY OF RBO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
A.G.G. Krishna, "ISOLATION AND IDENTIFICATION OF THE CAUSATIVE FACTORS RESPONSIBLE FORCOLOR FIXATION IN RICE BRAN OIL", Journal of the American Oil Chemists' Society, 70(8), 1993, pp. 785-788

Abstract

To understand the chemical nature of the dark coloring constituents responsible for color fixation in rice bran oil, crude and dewaxed ricebran oils of 6.8% free fatty acids were fractionated on a silica gel column to get a dark-colored material (0.57% of the oil). Thin-layer chromatographic analysis of the material showed a spot corresponding tomonoglycerides, but there were no spots corresponding to other glycerides. It contained traces of phosphorus (<0.1 ppm, which is equivalentto 2.5 ppm phospholipids) and iron (1.3 ppm) that could not be attributed to phospholipids or to any iron-complex. Upon saponification it yielded 12% nonsaponifiable matter. Gas-liquid chromatographic analysisof the saponifiable matter (after acidification and methylation of fatty acids) showed the presence Of palamitic, oleic and linoleic acids. Further, on the basis of comparison with spectroseopic data of synthetic monoglyceride, the constituent was characterized to be a mixture of monoglycerides with side chains of oxidized unsaturated fatty acids.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 19:00:49