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10 hasil
A rapid silica spin column-based method of RNA extraction from fruit trees for RT-PCR detection of viruses.
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Efficient recovery of high quality RNA is very important for successful RT-PCR detection of plant RNA viruses. High levels of polyphenols and polysaccharides in plant tissues can irreversibly bind to and/or co-precipitate with RNA, which influences RNA isolation. In this study, a silica spin
Analysis of sucrose esters--insecticides from the surface of tobacco plant leaves.
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Sucrose esters from the surface of leaves of Nicotiana tabacum L. have been shown to possess interesting biological activities. We developed a simple and effective method for their analysis using HPTLC silica gel plates, n-hexane-ethyl acetate (1:3, v/v) as developing solvent and
Detection of cymbidium mosaic potexvirus and odontoglossum ringspot tobamovirus using immuno-capillary zone electrophoresis.
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ABSTRACT Immuno-capillary zone electrophoresis (I-CZE) is a technique that combines the specificity afforded by serological assays with the sensitivity, rapidity, and automation in detection provided by capillary zone electrophoresis. Cymbidium mosaic potexvirus (CymMV) and odontoglossum ringspot
Steroidal glycosides from Nicotiana tabacum L. seeds and their biological activity.
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Steroidal glycosides of the spirostane and furostane series have been isolated from the methanolic extract of Nicotiana tabacum L. seeds by using gel filtration on silica gel and chromatography on a silica gel column. They were tentatively named nicotianosides A (1), B (2), C (3), D (4), E (5), F
Trichomes of tobacco excrete zinc as zinc-substituted calcium carbonate and other zinc-containing compounds.
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Tobacco (Nicotiana tabacum L. cv Xanthi) plants were exposed to toxic levels of zinc (Zn). Zn exposure resulted in toxicity signs in plants, and these damages were partly reduced by a calcium (Ca) supplement. Confocal imaging of intracellular Zn using Zinquin showed that Zn was preferentially
Quantititative determination of glycosylated and aglycon isoprenoid cytokinins at sub-picomolar levels by microcolumn liquid chromatography combined with electrospray tandem mass spectrometry.
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Microcolumn liquid chromatography (microLC) combined with electrospray tandem mass spectrometry is used for the determination of intact glycosylated cytokinins and the corresponding aglycons at picomole and sub-picomole levels in plant tissue. Routine analysis was done on C8-bonded silica using a
Characterization of Inositol-containing Phosphosphingolipids from Tobacco Leaves: Isolation and Identification of Two Novel, Major Lipids: N-Acetylglucosamidoglucuronidoinositol Phosphorylceramide and Glucosamidoglucuronidoinositol Phosphorylceramide.
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A method for a large scale extraction of phosphoglycosphingolipids from the leaves of Nicotiana tabacum L. has been developed. The phosphosphingolipid concentrate consists of a dozen or more polar lipids as judged by thin layer chromatography. Two of these lipids were purified by chromatography on
[Chemical structure and bioactivity of cis-5'-oxopropylnicotine].
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In this paper, the chemical constituents and bioactivities of leaves of Nicotiana tabacum were investigated. Six compounds were isolated by means of various chromatographic techniques (silica gel, Sephadex LH-20, MCI GEL CHP-20P and HPLC), and their structures were elucidated as
A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products.
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Diterpenoids form a diverse class of small molecule natural products that are widely distributed across the kingdoms of life and have critical biological functions in developmental processes, interorganismal interactions, and environmental adaptation. Due to these various bioactivities, many
The use of bead beating to prepare suspensions of nuclei for flow cytometry from fresh leaves, herbarium leaves, petals and pollen.
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"Bead beating" is commonly used to release DNA from cells for genomic studies but it was used here to prepare suspensions of plant nuclei for measurement of DNA amounts by flow cytometry. Plant material was placed in 2-ml screw-capped tubes containing beads of zirconia/silica (2.5 mm diameter) or
Database tanaman obat terlengkap yang didukung oleh sains
- Bekerja dalam 55 bahasa
- Pengobatan herbal didukung oleh sains
- Pengenalan herbal melalui gambar
- Peta GPS interaktif - beri tag herba di lokasi (segera hadir)
- Baca publikasi ilmiah yang terkait dengan pencarian Anda
- Cari tanaman obat berdasarkan efeknya
- Atur minat Anda dan ikuti perkembangan berita, uji klinis, dan paten
Ketikkan gejala atau penyakit dan baca tentang jamu yang mungkin membantu, ketik jamu dan lihat penyakit dan gejala yang digunakan untuk melawannya.
* Semua informasi didasarkan pada penelitian ilmiah yang dipublikasikan
