Volume 17 No. 5 September – October, 2012

ROMANIAN BIOTECHNOLOGICAL LETTERS

– an international journal –

CONTENTS

Cover: The Bucharest University Building

1.	FU QIYUN, LU JUNZHONG, LIN NIN, ZHENG SHAOTONG The Structures of Hydrazine Crystal and Its Antibacterial Activities	……………	7557
2.	NESLIHAN DIKBAS, KENAN KARAGÖZ, FATIH DADAŞOĞLU, RECEP KOTAN Determination of Relationship Between Satureja hortensis L. Essential Oil Susceptibility of Bacillus cereus Strains and Their Fatty Acid Methyl Ester Profiles	……………	7564
3.	CATALINA VOAIDES, R. DIMA The effect of nitrogen source on carotenoids production by Rhodotorula sp	……………	7570
4.	SATISH C. JAIN, BOSKEY PANCHOLI,RENUKA JAIN Aizoaceae plants as potential antimicrobial agents	……………	7577
5.	R.S. PELMUS, G. C. PISTOL, C. LAZAR, D. E. MARIN, M. GRAS, M. RADU, E. GHITA Preliminary study on milk composition and milk protein polymorphism in the Romanian local sheep breed Teleorman Black Head Tsigai	……………	7582
6.	TUTUNARU ALEXANDRU COSMIN, ŞONEA ALEXANDRU Current anesthetic protocols used in obtaining leporidae experimental models: a review	……………	7592
7.	STANKOVIĆ SLAĐAN, KOSTIĆ MIROSLAV, SIVČEV IVAN, JANKOVIĆ SNEŽANA, KLJAJIĆ PETAR, TODOROVIĆ GORAN , RADOSAV JEVĐOVIĆ Resistance of Colorado potato beetle (Coleoptera: Chrysomelidae) to neonicotinoids, pyrethroids and nereistoxins in Serbia	……………	7599
8.	OANA-ALINA SICUIA, F. OANCEA, FLORICA CONSTANTINESCU, SORINA DINU, CĂLINA PETRUŢA CORNEA Bacillus strains useful in improving vegetal mulch technology trough bio-activation	……………	7610
9.	ALICE GRIGORE, SVETLANA COLCERU-MIHUL,INA PARASCHIV, SULTANA NITA,RALUCA CHRISTOF, RASIT IUKSEL, MARIA ICHIM Chemical analysis and antimicrobial activity of indigenous medicinal species volatile oils	……………	7620
10.	IOAN CALINESCU, TEIU CORINA, CHIPURICI PETRE, TRIFAN ADRIAN, ALEXANDRESCU ELVIRA, ALEXANDRA IONESCU, ROMULUS DIMA Saccharomyces cerevisiae immobilization in polyacrylamide hydrogel obtained at low temperature	……………	7628
11.	JAIME A. TEIXEIRA DA SILVA, JUDIT DOBRÁNSZKI What constitutes ethical international scientific writing collaboration, co-operation and partnerships in Hungary?	……………	7639
12.	IULIANA DIANA BARBULESCU, MARIANA FERDES,CARMEN BEJAN, ANGHEL RODICA, RAZVAN TEODORESCU Improving wine-making products with selenium and total polyphenols	……………	7646
13.	MONICA LUIZA MALINOVSCHI, PETRONELA GRADINARU, ALEXANDRU MANOLIU The Influence of infrared radiation (IR) on catalase and peroxidase activity in the cellulolytic species Chaetomium globosum	……………	7656
14.	MIHAELA RĂCUCIU Influence of extremely low frequency magnetic field on assimilatory pigments and nucleic acids in Zea mays and Curcubitapepo seedlings	……………	7661
15.	YONGMIN YAN, HUI QIAN, WEI ZHU, FEI MAO, TINGFEN LI, WENRONG XU Hepatocyte growth factor modified human umbilical cord mesenchymal stem cells accelerate the recovery of mouse hepatic injury	……………	7673
16.	IRINA MIRELA APETREI, GABRIELA BAHRIM, MARIA LUZ RODRIGUEZ-MENDEZ Electrochemical study of polyphenols with amperometric tyrosinase based biosensors	……………	7684
17.	DURMUŞ ALPASLAN KAYA, MARIANA FERDES, NICOLETA BADEA, MADALINA GEORGIANA ALBU The effect of laurel and thymbra essential oils on antioxidant and antimicrobial properties of collagen hydrolysate	……………	7684
18.	MANUELA ADRIANA COSTACHE, GHEORGHE CAMPEANU, GABRIELA NEATA Studies concerning the extraction of chlorophyll and total carotenoids from vegetables	……………	7702
19.	MANUELA STĂNESCU (PASCAL), ALIN ION BÎRŢOIU Freezing of dog’s sperm: a review		7709