نتایج جستجو برای: hexadecanoic acid
تعداد نتایج: 747453 فیلتر نتایج به سال:
Essential oils are considered as very complex natural mixtures containing numerous components at quite various concentrations. Lythrum salicaria has not been previously subjected to examination of its volatile oil. The present study was carried out to evaluate the essential oil composition of the flowering aerial parts of the plant by using conventionally hydro-distillation (HD) and microwave a...
The cellular fatty acid composition and metabolic products of 12 reference strains of Achromobacter sp. and A. xylosoxidans were determined by gas-liquid chromatography (GLC). Results showed that the two Achromobacter groups are strikingly different and can be readily distinguished on the basis of cellular fatty acids and the short-chain acids produced by Achromobacter sp. The major cellular fa...
در چند سال اخیر با توجه به اهمیت مسایل زیست محیطی و درک جایگاه واقعی این مسئله، استفاده از ترکیب های گیاهی در بین محققان به عنوان یکی از روش های جایگزین برای متیل بروماید و فسفین مطرح شده است. در این تحقیقاثر حشره کشی و دور کنندگی عصاره برگ پیچ امین الدوله (lonicera caprifolicum) و برگ گیش برگ(rhazya stricta) روی حشرات کامل شپشه قرمز آرد (tribolium castaneum) و شپشه برنج (sitophylus oryzae) در ...
Eclipta prostrata, an aromatic plant, is known in Chinese herbal medicine for the treatment of various kidney diseases. In the present study, the volatile components were isolated from the aerial parts of this plant by hydrodistillation and analysed by GC-MS. A total of 55 compounds, which were the major part (91.7%) of the volatiles, were identified by matching mass spectra with a mass spectru...
Rhanterium epapposum, native to the Arabian Peninsula, is traditionally used cure skin infections. The objective screen phytochemical content and antimicrobial activity of aqueous, methanol 80% extracts aerial parts R. epapposum. screening methanolic, epapposum was conducted using gas chromatographymass spectrometry. activities were assessed by well diffusion microdilution methods. Qualitative ...
Abstract This study aimed to examine the ultrasonographic characteristics of mammary gland in post-partum ewes (1 4 weeks after lambing) varying genotypes for correlations with chemical composition milk. Ultrasonograms glands coronal (C) and sagittal (S) planes were obtained using 5.0- 7.5-MHz transducers from four Polish Mountain (PMt) six Olkuska (Olk) ewes. Computerized image analyses all im...
Abstract Sterile and fresh tissues of three marine macroalgae red, green brown ( Kappaphycus alvarezii, striatus Padina gymnospora ) collected from Malaysia east costal seas were compared for the antioxidants polysaccharide composition sugars as well active components. Results obtained showed that polysaccharides isolated can be used a source natural antioxidant compounds they possess potential...
Vinca major L. is an evergreen perennial weed of family Apocynaceae, growing naturally in hilly areas Hazara region Khyber Pakhtunkhwa, Pakistan. Flowers this were collected from Khanspur, Ayubia during June 2021, shade dried and extracted pure methanol for two weeks. After filtration, the extract was analyzed by GC-MS identification possible bioactive compounds. ?-Amyrin compounds (32.49%) fol...
Due to the lack of less-volatile compounds composition data macroalgal supercritical CO2 (SC-CO2) extracts, main goal this study was investigate their chemical profiles. SC-CO2 extraction (40 °C and 300 bar) performed on seven species including five brown (Halopteris filicina, Fucus virsoides, Dictyopteris polypodioides, Gongolaria barbata Ericaria amentacea), one green (Codium bursa) red (Amph...
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