نتایج جستجو برای: natural compounds

تعداد نتایج: 689587  

Natural food preservation method refers to application of naturally produced antimicrobial compounds that are obtained from plants, animals and microbes to prevent food spoilages microorganism, proliferation and growth of food borne pathogens in food and foods products. Now it is the time of growing interest of many researchers with the application of these natural antimicrobial compounds as sa...

Natural food preservation method refers to application of naturally produced antimicrobial compounds that are obtained from plants, animals and microbes to prevent food spoilages microorganism, proliferation and growth of food borne pathogens in food and foods products. Now it is the time of growing interest of many researchers with the application of these natural antimicrobial compounds as sa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

Journal: :Chemical & pharmaceutical bulletin 2008
Takeaki Naito

Nitrogen-containing compounds are core parts not only of natural and synthetic medicines but also of biologically active compounds including natural products. This review focuses on the development of new synthetic reactions for nitrogen-containing compounds via three methodologies: the reductive photocycloaddition reaction of enamides, radical addition reaction, and nucleophilic addition react...

Journal: :مجله علوم اعصاب شفای خاتم 0
robabeh jafari shefa neuroscience research center, khatam-al-anbia hospital, tehran, iran beheshteh azhdari department of marine chemistry, faculty of basic sciences, university of chabahar maritime and marine sciences, chabahar, iran maryam jafari department of parasitology and mycology, school of medicine, shiraz university of medical sciences, shiraz, iran zahra aeini shefa neuroscience research center, khatam-al-anbia hospital, tehran, iran sara abdolahi shefa neuroscience research center, khatam-al-anbia hospital, tehran, iran ali jahanbazi jahan abad shefa neuroscience research center, khatam-al-anbia hospital, tehran, iran

extensive research in the last decade has defined that most chronic diseases display dysregulation of multiple cell signaling pathways that have been linked to inflammation. neuroinflammation is reaction of living nervous tissue to injury. it may be initiated in response to neurological disease. including infection, traumatic brain injury, toxic metabolites and autoimmunity. the natural compoun...

Journal: :jundishapur journal of natural pharmaceutical products 0
mahdi mojarrab department of pharmacognosy and pharmaceutical biotechnology, faculty of pharmacy, kermanshah university of medical sciences, kermanshah, ir iran roozbeh soltani students research committee, kermanshah university of medical sciences, kermanshah, ir iran; department of medicinal chemistry, faculty of pharmacy, kermanshah university of medical sciences, kermanshah, ir iran alireza aliabadi department of medicinal chemistry, faculty of pharmacy, kermanshah university of medical sciences, kermanshah, ir iran; department of medicinal chemistry, faculty of pharmacy, kermanshah university of medical sciences, kermanshah, ir iran. tel: +98-8314276481, fax: +98-8314276493

conclusions according to the obtained data, synthesized pyridine based chalcones (3a-3j) could be proposed as potential antioxidant lead compounds. background natural chalcones and also their synthetic derivatives have attracted increasing attention due to various pharmacological applications. development and discovery of new chalcones with antioxidant activities is one of the attracting areas ...

Faryal Varaste Hossein Zarei Mehrdad Babarabie,

Gerbera(Gerbera jamesonii) from the family of Asteraceae is regarded as one of the best cut flowers in the world. Despite of the publicity of Gerbera’s cut flowers, they have a short postharvest life. The objective of the present study was to study the replacement feasibility and the comparison of thymol (isolated from zataria), and essential oils of peppermint and rosemary (200, 400 and 600 mg...

Journal: :journal of herbal drugs 0
hakimeh oloumi department of ecology, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran shahryar shakeri department of biotechnology, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iran majid behzadi agricultural research, education and extension organization, kerman center, kerman, iran

background & aim:extracts of roselle calyx,   possess compounds which could be considered as a great source of natural antioxidants.   in this project, antioxidant activities, phenolic compounds content and their   correlation analysis on calices of roselle (hibiscus sabdariffa) was investigated.  experimental: total polyphenolic compound, flavonoids and anthocyanins were determined spectrophot...

Atoosa Danyaei Hossein Zarei Mehrdad Babarabie, Sadegh Atashi Zahra Golsahdi Ghaleh Shahi

Tuberose (Polianthes tuberosa) is one of the most important cut flowers with fragrant buds. To prolong vase life of tuberose, proper preservative solution applying is necessary. For this purpose, two types of chemical and natural treatments were used. Applied treatments were benzyladenine (50, 100, and 150 mg l-1), the extracts of rosemary and Eucalyptus (12, 25 and 50%) and sour orange fruit e...

Journal: :Organic & biomolecular chemistry 2012
Liming Cao John P Maciejewski Stephan Elzner David Amantini Peter Wipf

The intramolecular Staudinger-aza-Wittig reaction is used for a general synthesis of 1,2,5,6-tetrahydro-1,2,4-triazines, a structural motif reported for the natural product noelaquinone. The DEF moiety of noelaquinone was obtained in 13 steps and 2% overall yield, and the structure of the synthetic product was confirmed by X-ray analysis.

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