英语词汇“degradation-products”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

c. Structural Bot. A change in the substance of the organized structures of plants, resulting in the formation of products ( degradation-products) which have no further use in the building up of new cell-walls or protoplasmic structures. In wider use in Biochemistry and Chemistry: a simplification of the structure of a molecule, brought about either naturally or artificially, in which it loses some constituent atoms or is broken up into a number of simpler molecules.

ΚΠ

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 628 The substances which cause lignification, suberisation, or cuticularisation are also probably the result of a partial degradation of the cellulose of the cell-walls.

1883 New Sydenham Soc. Lexicon Degradation products, a term applied to such compounds as gum in plants.

1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 511 The transformation or degradation of the alburnum into duramen takes place in some [trees] gradually, in others suddenly.

1900 Jrnl. Chem. Soc. 78 i. 650 (heading) Synthesis and degradation in the coumarone series.

1937 Jrnl. Biol. Chem. 118 781 The general conception has been that the enzymatic degradation of proteins proceeds in two distinct stages; i.e., the proteinases cleave the true protein into polypeptides and..the polypeptidases and dipeptidase complete the degradation to amino acids.

1938 L. Small in H. Gilman Org. Chem. II. xii. 1027 The cyanogen bromide degradation..often succeeds with compounds that resist the Hofmann degradation... Other vigorous degradations are often employed to determine the fundamental structures present.

1949 Nature 15 Jan. 94/2 The identification of this degradation product affords support for the view that one point of attachment of the disulphide grouping in gliotoxin is via a carbon atom directly linked to the indole nitrogen.

1954 Biochem. Jrnl. 58 392/1 The terminal monoribonucleotide..was obtained by stepwise degradation of the polynucleotides listed in Table 1.

1958 D. W. G. Ballentyne & L. E. Q. Walker Dict. Named Effects 192 Weerman degradation. An α hydroxy or α methoxy amide may be degraded to an aldehyde containing one less carbon atom by the action of a cold aqueous solution of sodium hypochlorite.

1966 R. T. Morrison & R. N. Boyd Org. Chem. (ed. 2) iv. 139 We may carry out a degradation: break the molecule apart, identify the fragments, and deduce what the structure must have been.

1968 Times 24 Oct. 7/8 Organic materials that accumulate in deep waters in the sea are relatively resistant to degradation by micro-organisms.

1970 Nature 26 Dec. 1313/1 Most body proteins are continually degraded and resynthesized. The protein content of various organs must represent the net balance between synthesis and degradation over some period of time.

单词	degradation-products
释义	> as lemmas degradation-products c. Structural Bot. A change in the substance of the organized structures of plants, resulting in the formation of products ( degradation-products) which have no further use in the building up of new cell-walls or protoplasmic structures. In wider use in Biochemistry and Chemistry: a simplification of the structure of a molecule, brought about either naturally or artificially, in which it loses some constituent atoms or is broken up into a number of simpler molecules. ΚΠ 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 628 The substances which cause lignification, suberisation, or cuticularisation are also probably the result of a partial degradation of the cellulose of the cell-walls. 1883 New Sydenham Soc. Lexicon Degradation products, a term applied to such compounds as gum in plants. 1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 511 The transformation or degradation of the alburnum into duramen takes place in some [trees] gradually, in others suddenly. 1900 Jrnl. Chem. Soc. 78 i. 650 (heading) Synthesis and degradation in the coumarone series. 1937 Jrnl. Biol. Chem. 118 781 The general conception has been that the enzymatic degradation of proteins proceeds in two distinct stages; i.e., the proteinases cleave the true protein into polypeptides and..the polypeptidases and dipeptidase complete the degradation to amino acids. 1938 L. Small in H. Gilman Org. Chem. II. xii. 1027 The cyanogen bromide degradation..often succeeds with compounds that resist the Hofmann degradation... Other vigorous degradations are often employed to determine the fundamental structures present. 1949 Nature 15 Jan. 94/2 The identification of this degradation product affords support for the view that one point of attachment of the disulphide grouping in gliotoxin is via a carbon atom directly linked to the indole nitrogen. 1954 Biochem. Jrnl. 58 392/1 The terminal monoribonucleotide..was obtained by stepwise degradation of the polynucleotides listed in Table 1. 1958 D. W. G. Ballentyne & L. E. Q. Walker Dict. Named Effects 192 Weerman degradation. An α hydroxy or α methoxy amide may be degraded to an aldehyde containing one less carbon atom by the action of a cold aqueous solution of sodium hypochlorite. 1966 R. T. Morrison & R. N. Boyd Org. Chem. (ed. 2) iv. 139 We may carry out a degradation: break the molecule apart, identify the fragments, and deduce what the structure must have been. 1968 Times 24 Oct. 7/8 Organic materials that accumulate in deep waters in the sea are relatively resistant to degradation by micro-organisms. 1970 Nature 26 Dec. 1313/1 Most body proteins are continually degraded and resynthesized. The protein content of various organs must represent the net balance between synthesis and degradation over some period of time. extracted from degradationn.¹ < as lemmas
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