نتایج جستجو برای: gc ms
تعداد نتایج: 145754 فیلتر نتایج به سال:
objective: in order to use natural compounds in controlling plant pests and diseases, many researchers in recent years have studied the antifungal effects of essential oils and plant extracts. the purpose of this study was to investigate the chemical composition and antifungal effects of echium khuzestanium and marubbium anisodan extracts. methods: after extraction and preparation of different...
بیان موقت در بافت برگ با ناقلهای دوتایی روش سریعی برای تولید پروتئین در گیاهان است. عامل های رونویسی باعث تغییر بیان همزمان چند ژن میشوند. به همین دلیل می توان از آنها برای اصلاح صفات کمی مانند سوخت وسازگر (متابولیت)های ثانویه که با چند ژن کنترل می شوند، استفاده کرد. گیاه artemisia annua گیاهی یک ساله، بومی آسیا و به احتمال بسیار زیاد چین است و یکی از مهم ترین سوخت وسازگرهای دارویی یعنی ترکی...
background & aim: turmeric, scientifically named (curcuma longa l.), a member of ginger (zingiberaceae) family, is a perennial plant, with pharmaceutical properties and with a rhizome. this plant has many medicinal characteristics including anti-cancer, anti-bacteria and anti-hepatitis properties. experimental: to study the effects of gibberellic acid and salicylic acid on leaf, the rhizome...
background & aim:jasmonic acid (ja) is regarded as endogenous regulators that play important roles in regulating stress responses, plant growth and development.effect of foliar application of ja on the essential oil and oil chemical components of hyssop (hyssopus officinalis l.) were investigated. experimental: this study conducted in a crd with three replications and in experimental green...
background & aim: the use of herbs in traditional medicine to treatment of diseases and other purposes in the food industry and cosmetics has since long been considered. considering that heracleum lasiopetalum, thymus carmanicus and myrtus communis have many health benefits therefore this research were performed to investigate the chemical composition of essential oils from these plants. e...
Bouea macrophylla Griff is a member of the Anacardiaceae family, which has edible fruits. Due to high nutritional value, appealing taste, and attractive color, fruit juice B. potential be developed as functional beverage. The present study was conducted determine phytochemical profile using GC-MS LC-MS/MS. analysis performed with Agilent Technologies 7890 Gas Chromatograph automated sampling ta...
A gas chromatography-mass spectrometry (GC-MS) method was validated for the determination of 16 polycyclic aromatic hydrocarbons (PAHs) from the FDA list of 93 harmful or potentially harmful constituents of mainstream cigarette smoke (MCS). Target analytes were extracted from total particulate matter using accelerated solvent extraction with a toluene/ethanol solvent mixture. Matrix artefacts w...
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