Possible origin of n-alkanes in high-wax crude oils (Record no. 51138)

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fixed length control field 01949nam a2200301Ia 4500
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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625160201.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-16973
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fixed length control field 250602s9999 xx |||||s2 |||| ||und|d
245 10 - TITLE STATEMENT
Title Possible origin of n-alkanes in high-wax crude oils
490 0# - SERIES STATEMENT
Volume/sequential designation Nature, 342(6249), p.529-531, 1989
520 3# - SUMMARY, ETC.
Summary, etc. LONG-CHAIN n-alkanes, with a slight preference for odd carbon number, are major constituents of high-wax crude oils. It is generally believed that these n-alkanes form by defunctionalization of (loss of functional groups from)the major components of higher-plant cuticular waxes1. Recently however, another cuticular component - an insoluble, non-hydrolysable highly aliphatic bio-polymer2,3 - was proposed as a possible biological precursor of these n-alkanes3. Here we study n-alkane distributions in high-wax crude oils through a series of artificial maturation experiments performed on one such biopolymer, isolated from the leaf cuticle of the extant vascular plant Agave Americana L. At relatively low temperatures, the homologous series of n-alkanes generated exhibits an internal distribution pattern that is indistinguishable from that of n-alkanes in some naturally occurring high-wax crude oils. Similar types of resistant biopolymers present in algal cell walls might be a major source of n-alkanes in non-waxy crude oils.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ARTIFICIAL MATURATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element BIOPOLYMER
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CRUDE OIL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CUTICULAR WAX
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element DEFUNCTIONALIZATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element LEAF CUTICLEN-ALKANE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element VASCULAR PLANT
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Tegelaar, E.W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Matthezing, R.M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Jansen, J.B.H.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Horsfield, B.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name De Leeuw, J.W.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1W9FayBQvMrvvJX7J1SsgxsCjPY455UBg/view?usp=drivesdk">https://drive.google.com/file/d/1W9FayBQvMrvvJX7J1SsgxsCjPY455UBg/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-16973 25.06.2025 25.06.2025 Documentos solicitados