Results 211 to 220 of about 93,914 (263)

Volatile Components of Tomatoes

Journal of Food Science, 1965
SUMMARY Methods were developed for the preparation in reproducible yield (2–5 ppm) of odor concentrate from fresh ripe tomatoes. Sufficient concentrate was obtained to allow its separation by gas chromatography and collection of its components for direct investigation.
A. W. PYNE, E. L. WICK
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Pricing Volatility of Stock Returns With Volatile and Persistent Components

SSRN Electronic Journal, 2007
This paper introduces a two-component volatility model based on first moments of both components to describe the dynamics of speculative return volatility. The two components capture the volatile and the persistent part of volatility, respectively. The model is applied to 10 Asia-Pacific stock markets. Their in-mean effects on returns are tested.
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Volatile components of safflower

Journal of Agricultural and Food Chemistry, 1990
Volatile components of safflower (Carthamus tinctorius L.) flowerhead buds, flowers, and leaves and stems were identified by gas chromatography-mass spectrometry. 1-Pentadecene is the major component of buds and leaves and stems.
Ronald G. Binder, Mabry E. Benson, Robert A. Flath   +2 more
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Volatile components of okra

Phytochemistry, 1990
Abstract Valid aroma isolates were prepared from okra followed by analysis using established procedures. One hundred and forty-eight components were identified (ca 93% of the total isolate) in this first study of the volatile components of okra. Sixteen terpenes represented the most abundant chemical class (comprising 26.9% of the isolate), and this ...
Jennifer M. Ames, Glesni Macleod
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Volatile components of starfruit

Phytochemistry, 1990
Abstract Volatile components of starfruit (carambola) were analysed using routine procedures. In all, 178 components ( ca 95% ofthe isolate) were positively identified, of which 116 are reported as starfruit volatiles for the first time. A further 31 components ( ca 2%) were partially characterized.
Glesni MacLeod, Jennifer M. Ames
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Volatile components of chayote

Phytochemistry, 1990
Abstract Using established procedures, volatile components of chayote were analysed for the first time. A total of 61 components ( ca 97% of the isolate) was positively identified, and a further four components ( ca 2%) were partially characterized.
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Volatile Components ofEphedra sinica Stapf.

Flavour and Fragrance Journal, 1997
The composition of the volatile oil from Ephedra sinica Stapf. has been investigated by capillary GC, GC–MS and 1H–NMR. The oil contained 146 volatile components of which 38.9% were terpenoids. The main constituents were α-terpineol (13.0%), tetramethylpyrazine (3.9%), terpinen-4-ol (3.9%), linalol (3.2%), 2,3-dihydro-2-methylbenzofuran (3.1%) and cis ...
Mitsuo Miyazawa, Yukiko Minamino, Hiromu Kameoka   +2 more
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Volatile Components of Green Walnut Husks

Journal of Agricultural and Food Chemistry, 2000
Volatiles were isolated from whole green mature walnuts (Hartley variety) with husks still intact using dynamic headspace sweeping with trapping on Tenax. A total of 45 volatile compounds were identified by GC-MS. Major volatiles identified included (E)-4, 8-dimethyl-1,3,7-nonatriene, pinocarvone, pinocarveol, myrtenal, myrtenol, (E,E)-4,8,12-trimethyl-
R G, Buttery, D M, Light, Y, Nam, G B, Merrill, J N, Roitman   +4 more
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Evaluation of volatile odoriferous components of saliva

Archives of Oral Biology, 1964
Abstract The objectives of this investigation are to elucidate chemical reactions involved in odour production, to characterize the odour components, and to establish suitable chemical methods for the determination of odour intensity of saliva. It is felt that the knowledge gained from this study will contribute to a better understanding of the ...
J, TONZETICH, V J, RICHTER
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Volatile components of figs

Food Chemistry, 1977
Abstract Volatile essences of Calimyrna, Kadota, Black Mission and Adriatic figs were prepared by passing large volumes of headspace gas through porous polymer traps at room temperature. The essences were analysed by gas chromatography, utilising wall-coated open-tubular glass capillary columns; structural elucidations were based on gas ...
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