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ethyl acetate/картофель
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Страница 1 от 85 полученные результаты
The hatching factor of the potato-root eelworm.
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1. The hatching factor of the potato-root eelworm was concentrated from potato-root leachings by adsorption on charcoal. The crude material, extracted from charcoal with acetone, was purified by partition between ethyl acetate and m-potassium dihydrogen phosphate, and ethyl acetate and a solution of
Sweet Potato Peels and Cancer Prevention.
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A bioassay-guided fractionation of an alcoholic extract from the peels of Ipomoea batatas Lam has been carried out. Sulforhodamine B and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays were used to evaluate the anticancer and antioxidant potential, respectively, while silica gel column chromatography
Hepatoprotective effect of meal replacement seeds juice based on sweet potato (MRSJ) against CCl 4-induced cytotoxicity in HepG2 cells
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A sweet potato-based Meal Replacement Seeds Juice (MRSJ) was developed by mixing sweet potatoes and carrots with four types of seeds. Consuming the MRSJ rather than the whole vegetables or whole seeds improved digestive function, proving that it is suitable for the elderly. Its rich composition of
Separation of two constituents from purple sweet potato by combination of silica gel column and high-speed counter-current chromatography.
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It is known that the choice of solvent system for high speed counter-current chromatography separation is of utmost importance. In this study, a simple and rapid thin layer chromatograph coupling with fluorometric (TLC-F) method has been used to determine the partition coefficient of target
Bacillus subtilis BS 107 as an antagonist of potato blackleg and soft rot bacteria.
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Antimicrobial substances were produced by Bacillus subtilis BS 107 in a defined medium and isolated from culture filtrate by precipitation at pH 2.5. Active fractions were extracted in ethyl acetate, acetone, and 80% ethanol and purified by thin-layer chromatography (TLC) on silica gel plates
The inhibitory effects of metabolites from Bacillus pumilus on potato virus Y and the induction of early response genes in Nicotiana tabacum
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To develop a new antiviral preparation from a microbial source, the halophilic bacterium Bacillus pumilus E303035 was isolated from a soil sample collected at Qarhan Salt Lake in Qinghai, China. The inhibitory activity of an ethyl acetate extract of its fermentation broth was higher than that of an
An enzyme-immunoassay of abscisic acid in potato (Solanum commersonii) cultured cells.
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Estimation of abscisic acid (ABA) content in potato (Solanum commersonii) suspension-cultured cells with an enzyme-immunoassay (EIA) was investigated. In crude extracts of potato cultured cells or even after simple clean-up using C18 cartridge, EIA based on commercial monoclonal antibodies (Idetek,
Production of ligninolytic enzymes and some diffusible antifungal compounds by white-rot fungi using potato solid wastes as the sole nutrient source.
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OBJECTIVE
The aim of this study was to evaluate the synthesis of ligninolytic enzymes and some diffusible antifungal compounds by white-rot fungi (WRF) using peels or discarded potato as the sole nutrient source.
RESULTS
The strain Trametes hirsuta Ru-513 highlighted for its laccase activity (595 ±
Changes in potato tuber invertase and its endogenous inhibitor after slicing, including a study of assay methods.
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The increase in the invertase activity of extracts from freshly cut potato (Solanum tuberosum L.) by "foaming," caused by selective denaturation of an endogenous invertase inhibitor, did not occur in extracts made from thin disks 2 days after slicing. Rather, foaming such extracts decreased
Solanidine isolation from Solanum tuberosum by centrifugal partition chromatography.
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The aim of this investigation was the preparative isolation of solanidine (aglycone of the two main potato glycoalkaloids: α-chaconine and α-solanine) from fresh Solanum tuberosum (cv. Pompadour) material by implementing a new preparation scheme using centrifugal partition chromatography (CPC). A
Biosynthesis, deposition, and partial characterization of potato suberin phenolics.
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Alkaline nitrobenzene oxidation of the polymeric materials from wound-healed potato (Solanum tuberosum L. var. White Rose) tuber tissue liberated p-hydroxybenzaldehyde, vanillin, and minor amounts of syringaldehyde as determined by gas chromatography/mass spectrometry. The aromatic aldehydes were
Differentiation of raw spirits of rye, corn and potato using chromatographic profiles of volatile compounds.
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BACKGROUND
The origin of the raw spirits influences the sensory quality of rectified spirits that are subsequently used for the production of vodka. The aim of this research was to evaluate the effectiveness of two methods based on the comparison of profiles of volatile compounds [solid phase
Analysis of the flavor of aged spirits made from sweet potato and rice by gas chromatography-mass spectrometry.
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Flavor patterns of sweet potato spirits (SPS) made from sul-deot manufactured by sweet potato showed an increasing tendency for aging from 64 to 128 weeks. When the SPS was blended with spirits made from sul-deot manufactured by rice in a 7:3 ratio, showing an increase for aging from 16 to 60 weeks,
Potato disc bioassay and cytotoxic effect of Leptadenia pyrotechnica: comparative study of diverse extracts.
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Comparative acute toxicity studies of the latex and sequential extracts of Leptadenia pyrotechnica (Forsk.) Decne (Asclepiadaceae) were recorded using brine shrimp. The higher toxicities were exhibited in latex; methanol, methanol/dichloromethane (1:1), defatted methanol/dichloromethane (1:1),
Bacillus licheniformis strain POT1 mediated polyphenol biosynthetic pathways genes activation and systemic resistance in potato plants against Alfalfa mosaic virus
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Alfalfa mosaic virus (AMV) is a worldwide distributed virus that has a very wide host range and causes significant crop losses of many economically important crops, including potato (Solanum tuberosum L.). In this study, the antiviral activity of Bacillus licheniformis strain POT1 against AMV on
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