Showing 3 results for nemati
H Ekhtiarzadeh , A Akhondzadeh Basti , A Misaghi, H Ebrahimzadeh Mousavi , S Bokaee , P Taherkhani, S Abbaszadeh , A Khanjari , Gh Nemati, S Sadeghi ,
year 10, Issue 40 (12-2011)
Abstract
Background: Essential oils and their components have antimicrobial effects. They use with spices as flavoring agents all over the world. They have been used safely since ancient times as herbal medicines. Zataria multiflora Boiss. is one of medicinal herbs in Iran and its antimicrobial effects on foodborne pathogens have to investigate in foodstuff. Objective: The aim of this study was to determine of the effect of Zataria multiflora Boiss. Essential oil on the growth of Listeria monocytogenes in salted (4%) silver carp. Methods: Effect of different concentrations of this Essential oil (0.0%, 0.045%, 0.135%, 0.405%, and 0.810%) on behavior of Listeria monocytogenes was determined by evaluation of the bacterial growth in salted fish fillets. Results: The essential oil in used concentrations had significant inhibitory effect on the growth of Listeria monocytogenes in salted fish during the storage time. The higher concentration until 0.405%, the more significant inhibitory effects on the growth of Listeria monocytogenes (p<0.05) but 0.405% and 0.810% concentrations had no different significant inhibitory effects on the growth of Listeria monocytogenes (p>0.05). Organoleptical survey showed that the concentrations of the essential oil used until 0.405% not only had no undesirable effect on flavoring but also it improve taste and flavor of salted fish. Conclusion: the result suggested that the Zataria multiflora Boiss. Essential oil can be considered as a natural preservative in salted fish.
F Salehi , H Arouiee , Ha Naghdi Badi , Sh Nemati , Sm Tolyat Abulhassani ,
year 16, Issue 64 (Supplement 11 2017)
Abstract
Background: Salvia multicaulis Vahl. a medicinal plant belonging to the Lamiaceae family, has an extensive application in native and traditional medicine.
Objective: This research was conducted to investigate diversity of morphophysiological traits and content of essential oil, phenol and flavonoid of Salvia multicaulis ecotypes in different districts of Hamedan province, Iran.
Methods: In this study, 11 ecotypes of Salvia multicaulis were collected from different districts of Hamedan Province at the full flowering stage in spring 2016 and were evaluated for their morphophysiological and phytochemical characteristics. The classification of ecotypes was done on the basis of phytochemical and morphophysiological traits by cluster analysis and correlations among quantitative traits was also conducted by Pearson method.
Results: Result showed that the essential oil content had positive significant correlation with plant height, inflorescence length, dry matter of flowering branche and essential oil yield. Also there was a positive significant correlation between essential oil yield with receptacle length, flower fresh and dry matter and plant dry matter. The heighes dry weight of flowering branch and flower was related to ecotypes of Lashkardar and west of Hamedan, respectively. The maximum plant dry weight was belong to Yelfan ecotype. The most essential oil content was related to Lashkardar and west of Hamedan ecotypes. Also, the highest content of phenol and flavonoid related to Vehnan ecotype. According to the cluster analysis, 11 ecotypes were divided into two groups.
Conclusion: The evaluation of morphophysiological and phytochemical traits showed that there was a considerable variation among different ecotypes of Salvia multicaulis in respect of morphophysiological and phytochemical characteristics.
N Qavami , M Azizi , F Yazdian , A Qaderi , H Nemati ,
year 17, Issue 65 (3-2018)
Abstract
Background: Papaver bracteatum Lindl. Commonly known as Iranian poppy is an important medicinal plant due to the presence of benzylisoquinoline alkaloids.
Objective: To evaluate the hairy root culture as a novel method for thebaine production.
Methods: To optimize the hairy root culture of P. bracteatum, five strains of Agrobacterium rhizogenes (ATCC15834, C318, A13, 9453 and A4) were used by means of Sonication-Assisted Agrobacterium-mediated Transformation (SAAT).
Results: Strain C318 proved to be more efficient than the other strains to hairy root induction ability. Among different experimental conditions, the highest transformation rate (28.5 %) was observed 4 weeks after inoculation, once the explants were subjected to sonication (45 s) following a heat treatment of 41°C for 5 min. Transgenic status of the hairy roots was confirmed by PCR using rolB specific primers.
Conclusion: Strain C318 proved to be more efficient than the other strains to hairy root induction ability. Among different experimental conditions, the highest transformation rate (28.5 %) was observed 4 weeks after inoculation, once the explants were subjected to sonication (45 s) following a heat treatment of 41°C for 5 min. Transgenic status of the hairy roots was confirmed by PCR using rolB specific primers.
