فهرست مقالات Temperature stability

• دسترسی آزاد مقاله
  • صفحه چکیده
  • متن کامل
  
  1 - Molecular dynamics simulation of interaction of Melittin and DMPC bilayer: Temperature dependence
  F. Kaveh H. Pasdar
  The interaction between proteins and membranes has an important role in biological pro-cesses.We have calculated energies of interaction between Melittin and DMPC bilayer in differenttemperatures. We have used the CHARMM software for MD simulation under the canonical (N چکیده کامل

  The interaction between proteins and membranes has an important role in biological pro-cesses.We have calculated energies of interaction between Melittin and DMPC bilayer in differenttemperatures. We have used the CHARMM software for MD simulation under the canonical (N,V, E) ensemble at different temperatures. The computations have shown that water moleculeshave more penetration into the bilayer around the transition temperature of DMPC bilayer.Phosalone, malathion and diazinon were analyzed in corn oil using solid phase extraction (SPE)with lanthanum silicate as a new solid sorbent followed by gas chromatography with nitrogen thedetector پرونده مقاله
• دسترسی آزاد مقاله
  • صفحه چکیده
  • متن کامل
  
  2 - A comparative study of some biochemical characteristics of peroxidase isoenzymes in rosemary plant (Rosmarinus officinalis L.)
  شیلر شمس سارا خاوری نژاد اکرم عیدی
  10.14196/JHD.2018.169
  Background & Aim: Rosemary (Rosmarinus officinalis L.) includes species that have high drug and nutritional values. Considering the importance of the antioxidant enzyme system as an effective factor in increasing the resistance of plants to different environmental s چکیده کامل

  Background & Aim: Rosemary (Rosmarinus officinalis L.) includes species that have high drug and nutritional values. Considering the importance of the antioxidant enzyme system as an effective factor in increasing the resistance of plants to different environmental stresses, in this research, some biochemical properties of catalase and peroxidase enzymes of rosemary plants were investigated in three different situations. Experimental: Rosemary plant was kept at home after being prepared from the greenhouse. For live situation, leaves were extracted directly and for carved situations, they were first airborne for 10 days. For dried sample, plant leaves were exposed to air during 10 days at first and then were completely dried for 2 minutes with 100% microwave power. Extraction of all 3 samples was done separately. The catalase (EC 1.11.1.6) and peroxidase (EC 1.11.1.7) enzymes were extracted from the leaves using 0.1 pH phosphate buffer with pH 7.2. Results & Discussion: According to results, the presence of an isoenzyme catalase with pH optimum 7 and three isoenzymes of peroxidase with optimum pH of 5 and 7 was confirmed in this plant by gel electrophoresis of Rosemary extract. In the enzyme peroxidase, the active isoenzymes in pH 5 were more resistant to temperature rising in the live plant compared to active isoenzyme at pH. Also, the catalase enzyme had higher resistance compared to peroxidase and its activity increased during stress. Industrial/ Practical recommendation: This study showed that rosemary plant is an inexpensive and available source for the extraction of antioxidative compounds such as catalase and peroxidase enzymes. Also, this research with the gaining of more effective herbal ingredients can be of great help to the pharmaceutical industry. پرونده مقاله