Quantitation of 1,4-Benzoxazin-3-ones in Maize by Gas-Liquid Chromatography
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چکیده
منابع مشابه
Quantitation of 1,4-Benzoxazin-3-ones in Maize by Gas-Liquid Chromatography.
A gas-liquid chromatographic (GLC) procedure is reported for the quantitation of the trimethylsilyl (TMS) derivatives of substituted 2-hydroxy-2H-1,4-benzoxazin-3(4H)-ones (2-hydroxy-2H-1,4-benzoxazin-3(4H)-one[HBOA]; 2-hydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one[HMBOA];2,4- dihydroxy-2H-1,4-benzoxazin-3(4H)-one[DIBOA]; 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one[DIMBOA]; and 2,4-dihy...
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Gas-liquid chromatography-mass spectrometry (GLC-MS) has been used for the separation, detection, and identification of 1,4-benzoxazin-3-ones (hydroxamic acids and lactams) and benzoxazolinones found in maize (Zea mays L.) extracts. Compounds of interest were partitioned into ethyl acetate from aqueous maize seedling extracts. For analysis by GLC-MS, trimethylsilyl derivatives were prepared, ch...
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Contents of three 1,4-benzoxazin-3-ones in tissue samples from different parts (young leaf, second leaf, old leaf, stem and root) of young maize plants of 4-leaves stage, fed by the third instar larvae of the Asian corn borer, Ostrinia furnacalis (Guenée), were analyzed by high-performance liquid chromatography-mass spectroscopy (HPLC-MS). Samples were taken immediately (set A) or 48 h (set B) ...
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A high performance liquid chromatography method for determining the levels of 4-pregnene-3-ones in tissue containing fat, e.g. in thymus is reported. Following the extraction with chloroform/methanol the fat has been separated from the steroidal-fraction by using disposable extraction-columns. The steroidal-fraction has been analysed in two separation systems, on a RP18-column with a methanol/w...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1979
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.63.1.14