Crusca di riso

Definizione della quantità di vitamina E e gammaoryzanolo nel germe e nella crusca di riso.
Yu S, Nehus ZT, Badger TM, Fang N.
Hubei College of Chinese Traditional Medicine, Wuhan 430065, People's Republic of China.


ABSTRACT
Hubei College of Chinese Traditional Medicine, Wuhan 430065, People's Republic of China.
Rice bran is a rich natural source of vitamin E and gamma-oryzanol, which have been extensively studied and reported to possess important health-promoting properties. However, commercial rice bran is a mixture of rice bran and germ, and profiles of vitamin E and gamma-oryzanol components in these two different materials are less well-studied. In the current study, vitamin E and gamma-oryzanol components in rice bran and germ were analyzed by liquid chromatography/mass spectrometry/mass spectrometry. The components were identified by electrospray ionization mass spectrometry (ESI-MS) with both positive- and negative-ion modes. Both deprotonated molecular ion and protonated molecular ion found as the base peaks in spectra of vitamin E components made ESI-MS a valuable analytic method in detecting vitamin E compounds, especially when they were at very low levels in samples. Ultraviolet absorption was used for quantification of vitamin E and gamma-oryzanol components. While the level of vitamin E in rice germ was 5 times greater than in rice bran, the level of gamma-oryzanol in rice germ was 5 times lower than in rice bran. Also, the major vitamin E component was alpha-tocopherol in rice germ and gamma-tocotrienol in rice bran. These data suggest that rice bran and germ have significantly different profiles of vitamin E and gamma-oryzanol components. The method enables rapid and direct on-line identification and quantification of the vitamin E and gamma-oryzanol components in rice bran and germ.

J Agric Food Chem. 2007 Sep 5;55(18):7308-13. Epub 2007 Aug 11.

I nostri prodotti
Interpretiamo il riso come ingrediente, valorizziamo tutti i componenti e ci poniamo come interlocutore privilegiato nel business to business.
Farine di riso
senza glutine, granulometrie standard e personalizzate, assenza d’impurità
Farine integrali
senza glutine, granulometrie standard e personalizzate
Crusca di riso stabilizzata
crusca di riso senza glutine
Amido di riso
senza glutine, alta viscosità, sapore e colore neutro
Olio di riso
profilo sensoriale neutro, alto punto di fumo
Bevande vegetali
senza glutine, senza lattosio, senza proteine del latte vaccino
Polvere di riso
senza glutine, senza lattosio, solubile
Riso soffiato
riso termo-trattato, senza additivi, senza coloranti, a bassa umidità, pronto all’uso
Scegli il prodotto

in base alle sue proprietà
o ai suoi requisiti qualitativi
PROPRIETÀ

REQUISITI QUALITATIVI