Volume 12 No. 2 March – April, 2007 ROMANIAN BIOTECHNOLOGICAL LETTERS – an international journal – CONTENTS 1.ADRIAN IGA, NICOLETA FLORENTINA PREDESCU, SILVIA IGA, ALINA NICOLESCU, DUMITRU PETRU IGAChromatographic Separation from Food Materials of Galactocerebroside and Sulfatide According to their Degree of Hydroxylation and Characterization by 1H and 13C NMR and by IR Spectroscopy ……………30912.ANCA-MARCELA LUPASTEANU, ANCA-IRINA GALACTION, DAN CAŞCAVALBioreactors with immobilized biocatalysts ……………30993.VALENTINA ALEXANDRU, DANIELA N. PETRUSCA, ELVIRA GILLEInvestigation of Pro-apoptotic Activity of Equisetum arvense L. Water Extract on Human Leukemia U 937 Cells ……………3105 4.VAMANU ADRIAN, VAMANU EMANUEL, POPA OVIDIU, CÂMPEANU GHEORGHE, DRUGULESCU MANUELBiotechnological studies on the production of exopolysaccharides by lactic bacteria in batch system ……………31135.ANCA-IRINA GALACTION, MARIA CAMARUT, DAN CASCAVALSelective separation of trans-cinnamic and p-methoxycinnamic acids by facilitated pertraction. Mathematical modeling of pertraction selectivity ……………31216.VESELINKA ĐURIĆ, JOVANKA POPOV-RALJIĆ, M. MALEŠEVIĆEffect of increased nitrogen fertilisation on the breadmaking quality of winter wheat (Triticum aestivum L.) ……………3128 7.ORTANSA CSUTAK, TATIANA VASSU, PETRUTA CORNEA, IRINA GREBENISANGenetic characterization of two new Metschnikowia strains with antifungal activity ……………31348.MIOARA VARGAStochastic approximation – a method for solving a problem of competing antagonism ……………31419.JOVANKA POPOV-RALJIĆ, KATALIN ŠMIT, ALEKSANDAR ŽIVKOVIĆ, IVANA LUKIĆColour and sensory properties of the mixed edible vegetable oils …………… 314610.EVELINA GHERGHINA, GABRIELA LUTAPhitohormons – effectives instruments in modifying the plant’s metabolism – with the aim of obtaining products with superior nutritional qualities …………… 315111.CAMELIA DIGUTA, STEFANA JURCOANE, FLORENTINA ISRAEL–ROMING, MATHIEU BRULE, MIKE MUKENGELE, ANDREAS LEMMER, HANS OECHSNERStudies concerning enzymatic hydrolysis of energy crops …………… 3157 Cover: The Bucharest University Building
