Incense Cedar Libocedrus Decurrens
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Incense Cedar
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Author : United States. Forest Service
language : en
Publisher:
Release Date : 1907
Incense Cedar written by United States. Forest Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1907 with Cedar categories.
Incense Cedar Libocedrus Decurrens
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Author : Harold Scofield Betts
language : en
Publisher:
Release Date : 1955
Incense Cedar Libocedrus Decurrens written by Harold Scofield Betts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Incense cedar categories.
Incense Cedar Libocedrus Decurrens
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Author :
language : en
Publisher:
Release Date : 1927
Incense Cedar Libocedrus Decurrens written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1927 with Incense cedar categories.
California Incense Cedar Libocedrus Decurrens
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Author : Harold Scofield Betts
language : en
Publisher:
Release Date : 1944
California Incense Cedar Libocedrus Decurrens written by Harold Scofield Betts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Incense cedar categories.
Incense Cedar
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Author : Alexander Dunlop Lindsay
language : en
Publisher:
Release Date : 1932
Incense Cedar written by Alexander Dunlop Lindsay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1932 with Incense cedar categories.
Incense Cedar Libocedrus Decurrens Torrey
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Author : Arthur B. Anderson
language : en
Publisher:
Release Date : 1965
Incense Cedar Libocedrus Decurrens Torrey written by Arthur B. Anderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
The Peeling Of Thick Veneer Of Incense Cedar Libocedrus Decurrens Torr
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Author : Jorge Tomas Muller Rothgiesser
language : en
Publisher:
Release Date : 1971
The Peeling Of Thick Veneer Of Incense Cedar Libocedrus Decurrens Torr written by Jorge Tomas Muller Rothgiesser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Incense cedar categories.
The Nature Of The Chemical Constituents Of Incense Cedar Libocedrus Decurrens Torr Bark
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Author : James Edward Smith
language : en
Publisher:
Release Date : 1952
The Nature Of The Chemical Constituents Of Incense Cedar Libocedrus Decurrens Torr Bark written by James Edward Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with Bark categories.
The purpose of this investigation was to determine the nature of the chemical constituents of incense cedar bark with the hope that such an endeavor would spur future research, development and use of a now neglected natural raw material. The bark from nine trees, which were separated into three age groups, was sampled from the bottom, middle and top sections. The age groups were 146-195 years, 261-285 years and 326-351 years. The nine samples were successively extracted with hexane, benzene, ethyl ether, hot water and 95 per cent ethanol to show the distribution and amounts of the extractives. The total extractive content varied between 13.70 per cent for the bottom sample of the oldest age group and 30.39 per cent for the top sample of the youngest age group. Similarly, the total extractive content of Port Orford cedar bark was found to range from 15.49 per cent to 25.69 per cent with the distribution corresponding closely to that of incense cedar. In both species, the greatest amount of extraneous material was removed with hot water and the variations between the total extractive content of the bottom and top samples were due primarily to the deviations in the amounts of this extract. The hexane extract was found to comprise 3.53 per cent of the ovendry unextracted bark. The components of the hexane extract and the yields based on the oven-dry weight of the hexane solubles were: volatile oil, 0.95 per cent; crystalline fatty ester, 5.83 per cent; free acids, 46.21 per cent; neutrals, 46.67 per cent; and undetermined, 0.34 per cent. Saponification of the crystalline fatty ester gave cerotic acid and an alcohol fraction equivalent to a mixture of behenyl and lignoceryl alcohols. The free acids were shown to contain 1.93 per cent resin acids, 1.11 per cent of a crystalline acid fraction equivalent to a mixture of behenic and lignoceric acids, and a fatty acid fraction, having a neutral equivalent of 435.8 and a Hanus iodine number of 41.2, which comprised 44.28 per cent of the hexane solubles. The neutral fraction contained 25.08 per cent combined acids, which had a neutral equivalent of 446.6 and a Hanus iodine number of 80.1, and 21.59 per cent unsaponifiables from which a crystalline phytosterol was isolated in a yield of 1.07 per cent of the hexane solubles. The yield of benzene soluble material was 2.46 per cent of the ovendry unextracted bark. The major components of this extract were resin acids, present in both the free and combined forms. The yield of free resin acids was 64.4 per cent of the benzene extract; the fraction melted at 181-182° C., had a neutral equivalent of 347.7 and was optically active. The combined resin acids comprised 7.8 per cent of the benzene solubles. They melted at 151-152° C., had a neutral equivalent of 358.0 and were optically active. The remainder of the benzene extract was found to contain 8.2 per cent free fatty acids, 10.8 per cent combined fatty acids and 8.2 per cent unsaponifiables. The tannin content of incense cedar bark ranged from 3.5 to 7.8 per cent, whereas that of Port Orford cedar varied between 4.2 and 7.0 per cent. These tannin yields are insufficient for economical commercial extraction. A crude carbohydrate material was obtained with hot water in a yield of approximately nine per cent of the oven-dry weight of unextracted bark. It contained 65.9 per cent reducing sugars, 24.0 per cent tannin and 10.2 per cent insolubles. The composition of the reducing sugars based on the crude carbohydrate material was: pentosans, 13.46 per cent; mannans, 3.09 per cent; galactans, 21.50 per cent; uronic anhydride, 1.87 per cent; and glucosans, 25.98 per cent. A composite sample of unextracted bark contained 14.93 per cent alcohol-benzene solubles; 3.04 per cent alcohol solubles, 7.47 per cent hot-water solubles, 37.06 per cent lignin, 36.40 per cent holocellulose, 8.51 per cent pentosans, 2.69 per cent methoxyl, 0.59 per cent acetyl, and 0.97 per cent ash.
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California
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Author : Michael L. Morrison
language : en
Publisher:
Release Date : 1989
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California written by Michael L. Morrison and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Avian ecology categories.
Seasonal differences in use of food and habitat have been shown for numerous bird species. Especially during winter, when insect food is often at its lowest availability, birds may be unable to secure enough food for survival. In earlier work in the mixed-conifer zone of the western Sierra Nevada (Blodgett Forest, El Dorado County), observers found that many birds significantly increased their relative use of incense-cedar (Calocedrus decurrens [Torr.] Florin.) for foraging in winter as compared to summer. Preliminary examination of cedar showed the presence of one predominant arthropod species: the incense-cedar scale (Xylococculus rnacrocarpae Coleman). Scales were abundant under the loose, flaky bark of small (
Cellular Distribution Of Extractives In Redwood Sequoia Sempervirens And Incense Cedar Libocedrus Decurrens Wood
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Author : Mon-Lin Kuo
language : en
Publisher:
Release Date : 1977
Cellular Distribution Of Extractives In Redwood Sequoia Sempervirens And Incense Cedar Libocedrus Decurrens Wood written by Mon-Lin Kuo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Extraction (Chemistry) categories.