Volume 14 No. 5 September – October, 2009

ROMANIAN BIOTECHNOLOGICAL LETTERS

– an international journal –

CONTENTS

Cover: The Bucharest University Building

1.	ANA – MARIA HOSSU, MIHAELA – FLORY MARIA, CRISTIANA RADULESCU, MIHAELA ILIE, VASILE MAGEARU TLC Applications on separation and quantification of fat-soluble vitamins	……………	4615
2.	GABRIELA PAUN ROMAN, ELENA NEAGU, VERONICA MOROEANU, GH. NECHIFOR, GABRIEL LUCIAN RADU The ultrafiltration performance of composite membranes for the concentration of plant extracts	……………	4620
3.	LUCIAN GAVRILA, NICOLAE BARBACAR, IRINA RADU, LILIANA BURLIBASA, LAURA MONICA MAGDALENA, AUREL ARDELEAN, GHEORGHE DANUT CIMPONERIU, ELENA POPOVICI, MARIA DANIELA USURELU, IOANA MACOVEI, FLORICA MORĂNESCU AND MARIAN CARABAS New aspects concerning the study of dipteran polytene chromosomal phenotype elements in Chironomus plumosus	……………	4625
4.	NASREEN JAN, SUDHIR U. MESHRAM AND ARCHANA KULKARNI Plasmid profile analysis of multidrug resistant E. coli isolated from UTI patients of Nagpur City, India	……………	4635
5.	Jong Se Kim, Sook Young Lee, Sang Un Park An efficient protocol for peanut (Arachis hypogaea L.) transformation mediated by Agrobacterium rhizogenes	……………	4641
6.	SONIA GUTT, GEORG GUTT Factors influencing the fermentation process and ethanol yield	……………	4648
7.	ROXANA COJOC, SIMONA MERCIU, GABRIELA POPESCU, LUCIA DUMITRU, MASAHIRO KAMEKURA AND MĂDĂLIN ENACHE Extracellular hydrolytic enzymes of halophilic bacteria isolated from a subterranean rock salt crystal	……………	4658
8.	CARMEN GAIDAU, AURORA PETICA, CONSTANTIN CIOBANU and TAMARA MARTINESCU Investigations on Antimicrobial Activity of Collagen and Keratin Based Materials doped with Silver Nanoparticles	……………	4665
9.	RADIANA TAMBA-BEREHOIU, NICOLAE-CIPRIAN POPA, STEFANA JURCOANE, ANA ROSU, RODICA CULEA Researches regarding bioethanol from renewable sources such as sweetpotato, as an ecotoxic alternative to fossil fuels	……………	4673
10.	ANCA-IRINA GALACTION, ANCA-MARCELA LUPĂŞTEANU, DAN CAŞCAVAL Comparative evaluation of radial impellers efficiency for bioreactors with stirred bed of immobilized cells 3. Paddle with six blades and pitched bladed turbine	……………	4681
11.	ION-OCTAVIAN DOAGĂ, EUGEN RADU, GYÖNGYVÉR KATONA, JUDIT HORVÁTH, ERVIN TANOS, LÁSZLÓ KATONA, ÉVA KATONA Low level long wavelength laser irradiation effects on human T leukemic lymphoblasts mitochondrial reticulum	……………	4694
12.	ŞTEF D. S., GERGEN I., TRAŞCĂ T. I., MONICA HĂRMĂNESCU, ŞTEF LAVINIA, BIRON RAMONA, M. G. HEGHEDUŞ Total antioxidant and radical scavenging capacities for different medicinal herbs	……………	4704
13.	ELENA STOICA Application of T-RFLP analysis to the study of the coastal Black Sea bacterioplankton	……………	4710
14.	RUSU ELENA, ENACHE-SOARE SIMONA, NEGRUTA OANA, VASSU TATIANA The conventional identification and effect of diclofenac and aspirin on the Candida species	……………	4720
15.	YESIM YALCIN-MENDI, CEREN UNEK, SELAY ELDOGAN, YILDIZ AKA-KACAR, SEDAT SERCE, PEMBE CURUK, ESRA KOCAMAN The Effects of Different Hormones on Regeneration of Gazania (Gazania rigens)	……………	4728
16.	MIHAELA ZAULET, LAVINIA RUSU, STELIANA KEVORKIAN, CATALINA LUCA, SORINA MIHACEA, ELENA MARCELA BADEA, MARIETA COSTACHE Detection and quantification of GMO and sequencing of the DNA amplified products	……………	4733
17.	AURA MIHALCEA (CHITU), IRINA STEFAN (BERLIN), VALERIA TICA, ELENA IONICA The detection of mutations in the APC gene of Romanian patients with colorectal cancer through two independent techniques	……………	4747
18.	LUCIA PINTILIE, CATALINA NEGUT, C. ONISCU, M.T. CAPROIU, M. NECHIFOR, LUMINITA IANCU, CRISTINA GHICIUC, RAMONA URSU Synthesis and Antibacterial Activity of Some Novel Quinolones	……………	4756