نتایج جستجو برای: assisted hydrodistillation

تعداد نتایج: 131704  

Journal: :Journal of Food Biochemistry 2023

We aimed at comparing the effects of domestication and extraction technique on chemical profiling antioxidant antimicrobial activities Rosmarinus officinalis essential oil (ROEO). This was isolated from wild (WR) cultivated rosemary (CR) using microwave-assisted (ME) Clevenger hydrodistillation (CH). Domestication main variability source in ROEO constituents, while yield equally determined by t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1389

چکیده در این پایان نامه اجزاء تشکیل دهنده دو گیاه از جنس rubus به شرح زیر بررسی شد: درصد اسانس اندام هوایی منطقه برداشت نام علمی گیاه 037/0% حاشیه دریای خزر 1)rubus anatolicus 025/0% رشت 2)rubus anatolicus 063/0% گردنه حیران(اردبیل) 3)rubus hyrcanus روش اسانس گیری تقطیر با آب hydrodistillation بوده و سپس اجزاء تشکیل دهنده با استفاده از gc/ms شناسایی شدند. -مواد عمده اسانس rubus ...

Journal: :analytical and bioanalytical chemistry research 0
alireza ghiasvand department of chemistry, lorestan university, khoramabad, iran afagh nasirian department of chemistry, lorestan university, khoramabad, iran samira koonani department of chemistry, lorestan university, khoramabad, iran kolsoom nouriasl department of chemistry, lorestan university, khoramabad, iran

since solid-phase and liquid-phase microextraction (spme and lpme) were introduced, as effective solvent-free methods, many efforts have been made to improve their modes and applications. however, due to limitations with sensitivity and efficiency, researchers have focused on improving the performance of their basic primary modes. in this way, in recent years, different methods such as ultrason...

Journal: :nursing and midwifery studies 0
mahboubeh taebi department of midwifery, faculty of nursing and midwifery, isfahan university of medical sciences, isfahan, ir iran; department of midwifery, faculty of nursing and midwifery, isfahan university of medical sciences, isfahan, ir iran. tel: +98-9133252700

2015
Hai-Ning Lv Ke-Wu Zeng Xiao-Yu Guo Jing-Quan Yuan Peng-Fei Tu Yong Jiang

The essential oil from the leaves of Murraya alata Drake was extracted by hydrodistillation and analyzed by GC-MS. A total of 70 components were identified, accounting for 93.7% of the oil composition. The major compound is -cadinol (18.9%), followed by -muurolol (10.0%), trans-prenyl limonene (7.7%), germacra-4(15),5,10(14)-trien-1--ol (6.0%), and cedryl acetate (5.4%). M. alata oil was cha...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2002
Nikolas Fokialakis Prokopios Magiatis Sofia Mitaku

The chemical composition of the essential oils obtained by hydrodistillation of roots, stems with leaves and inflorescences of Valeriana italica Lam. and Valeriana tuberosa L. were studied by GC/MS. Seventy-three and forty-one constituents were identified from each plant, respectively. The major constituent of the oil obtained from the roots of V. italica was isolated and identified as 15-aceto...

2011
Ana Carolina Sbeghen-Loss Mauricio Mato Maria Veronica Cesio Caren Frizzo Neiva Monteiro de Barros Horacio Heinzen

The wood protective action of citrus wax, a waste from the citrus industry that is a mixture of citrus fruit epicuticular waxes and essential oils, was evaluated against the termite Cryptotermes brevis Walker (Isoptera: Kalotermitidae). The antifeedant index (AI) of the total wax and fractions was calculated. The total citrus wax exhibited an AI₅₀ value of 24.69 mg/cm³, the wax after hydrodisti...

Journal: :Natural product communications 2013
Yu-Chang Su Chen-Lung Ho

This study investigated the chemical composition and in-vitro cytotoxic activities of the essential oil isolated from the leaf of Beilschmiedia erythrophloia. The essential oil was isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. Fifty-five compounds were identified, representing 100% of the oil. The main components identified were beta-cary...

2013
Vahid Rowshan Ameneh Tarakemeh

GC-MS analysis identified forty seven and fourteen components in oils extracted using HD and in the volatile fractions extracted using HSE, respectively. eudesm-7(11) en-4-ol (28.46%), α-terpinyl acetate (12%), germacrene D-4-ol(7.3%), 1,8-cineole (6.22%), δ-cadinene (6.49%), bicyclogermacrene (5.20%) and α-cadinol (5.06%) were recorded as the main components of the essential oil and The major ...

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