galactinn.

Brit.

/ɡəˈlaktɪn/, U.S.

/ɡəˈlæktɪn/

Forms: 1800s galactine, 1800s– galactin, 1800s gallactin.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek γαλακτ- , γάλα , -in suffix¹.

Etymology: < ancient Greek γαλακτ-, γάλα milk (see galactic adj.) + -in suffix¹.In sense 2a after German †Galactin (1821 or earlier; now Galaktin ). In senses 2b and 3a after French galactine a gelatinous substance found in milk (A. Morin 1854, in Jrnl. de pharm. et de chim. 25 434), a polysaccharide extracted from the seeds of lucerne (A. Muntz 1882, in Comptes rendus hebd. de l'Acad. des Sci. 94 454).

Chemistry and Biochemistry.

†1. A white substance isolated from the latex of the cow tree of South America, Brosimum utile (family Moraceae). Obsolete.

ΚΠ

1831 T. Thomson in Trans. Royal Soc. Edinb. 11 239 When the matter thus retained is exposed to moderate heat it melts, and on cooling assumes the form of a yellowish-white, opac, wax-like substance, which I shall distinguish by the name of gallactin.

1837 H. Murray et al. Encycl. Geogr. (rev. ed.) III. v. iv. 233 From this extraordinary fluid, Dr. Thomson has extracted a new substance, which he calls Galactine.

1873 Galaxy June 853/1 The juice of the Brosimum galactodendron, or cow-tree of Venezuela..contains thirty per cent. of galactin.

†a. = casein n. 1a. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΚΠ

1848 R. Dunglison Med. Lexicon (ed. 7) 378/2 Galactine, casein.

1854 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 356/1 Galactin, the coagulating principle of milk... Germ. anal...Käsestoff, m.

†b. A gelatinous substance found especially in milk. Obsolete.

ΘΚΠ

the world > food and drink > food > dairy produce > [noun] > milk > constituents or extracts of milk

frangipane1844

galactin1854

solids-not-fat1874

Plasmon1900

1854 tr. A. Morin in Chemist 1 657 This property, and the circumstance that the gelatiniform matter exists in considerable quantity in the lactescent secretions, justify the name of galactine, by which I propose to designate it.

1879 A. W. Blyth in Jrnl. Chem. Soc. 35 532 After the liquid from which the galactin has been removed had been freed from the excess of lead by hydrogen sulphide, an alkaloïdal colouring matter..may be separated.

1881 Science 9 Apr. 168/2 The same mixture with small quantities of peptones represents the galactine of Morin.

c. An amorphous proteinaceous substance found in whey. Now disused.

ΚΠ

1879 A. W. Blyth in Jrnl. Chem. Soc. 35 532 On filtering from the mercury sulphide the lead salt, a substance, to which I propose to give the name of galactin, is thrown down by the addition of acetate of lead.

1937 A. L. Winton & K. B. Winton Struct. & Composition Foods III. i. 85 The lactoprotein found in whey..was shown by Blyth in 1879 to be a mixture from which he separated two substances, ‘galactin’ and ‘lactochrome’... More recent investigators question the identity of these substances.

a. A plant polysaccharide consisting of galactose residues; = galactan n. Now disused.

ΘΚΠ

the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > other polysaccharides

trehalose1862

triticin1874

galactin1882

callose1890

floridean starch1902

levan1902

leucosin1914

arabinogalactan1928

laminarin1934

glucan1943

zymosan1943

agarose1953

laminaran1961

1882 Jrnl. Amer. Chem. Soc. 4 231 On galactin... Extracted from the seeds of Lucerne.

1886 Jrnl. Chem. Soc. 50 609 This carbohydrate [from the seed of Lupinus luteus] very closely resembles galactin (or adopting Scheibler's nomenclature galactan), obtained by Muntz from the seed of the lucerne.

1908 W. T. Hall & G. Defren tr. E. Abderhalden Text-bk. Physiol. Chem. iii. 44 In the constructive-tissue of Lupinus luteus is found galactin, a carbohydrate of this group yielding only galactose upon complete hydrolysis.

†b. = lactose n. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > matter > chemistry > organic chemistry > carbohydrates > sugars > oligosaccharides > [noun] > disaccharides > lactose

sugar of milk1753

lactose1847

galactin1885

1885 New Sydenham Soc. Lexicon Galactin... Also, the same as lactin.

4. = prolactin n. Now rare.

ΘΚΠ

the world > life > biology > substance > process stimulators or inhibitors > hormone > [noun] > other hormones

thyro-iodine1896

parathormone1925

parathyroid hormone1925

oestrin1926

oestrogen1927

relaxin1930

theelin1930

prolan1931

galactin1932

inhibin1932

prolactin1932

oestriol1933

oestrone1933

oestradiol1934

adrenocorticotrophin1943

pancreozymin1943

ADH1945

adrenocorticotropin1945

cortisone1949

mineralocorticoid1950

electrocortin1953

aldosterone1954

angiotensin1958

melatonin1958

calcitonin1961

zeranol1971

amylin1988

adiponectin1999

adipokine2001

1932 C. W. Turner & W. U. Gardner in Abstr. Papers presented at 27th Ann. Meeting Amer. Dairy Sci. Assoc. 10 Because it appears to be the first true galactogogue isolated, we have called this hormone galactin.

1952 S. J. Folley in A. S. Parkes Marshall's Physiol. Reprod. (ed. 3) II. xx. 558 When first discovered it was variously named prolactin (Riddle), galactin (Turner) and mammotropin (Lyons).

This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).

单词	galactin
释义	galactinn. Brit. /ɡəˈlaktɪn/, U.S. /ɡəˈlæktɪn/ Forms: 1800s galactine, 1800s– galactin, 1800s gallactin. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek γαλακτ- , γάλα , -in suffix¹. Etymology: < ancient Greek γαλακτ-, γάλα milk (see galactic adj.) + -in suffix¹.In sense 2a after German †Galactin (1821 or earlier; now Galaktin ). In senses 2b and 3a after French galactine a gelatinous substance found in milk (A. Morin 1854, in Jrnl. de pharm. et de chim. 25 434), a polysaccharide extracted from the seeds of lucerne (A. Muntz 1882, in Comptes rendus hebd. de l'Acad. des Sci. 94 454). Chemistry and Biochemistry. †1. A white substance isolated from the latex of the cow tree of South America, Brosimum utile (family Moraceae). Obsolete. ΚΠ 1831 T. Thomson in Trans. Royal Soc. Edinb. 11 239 When the matter thus retained is exposed to moderate heat it melts, and on cooling assumes the form of a yellowish-white, opac, wax-like substance, which I shall distinguish by the name of gallactin. 1837 H. Murray et al. Encycl. Geogr. (rev. ed.) III. v. iv. 233 From this extraordinary fluid, Dr. Thomson has extracted a new substance, which he calls Galactine. 1873 Galaxy June 853/1 The juice of the Brosimum galactodendron, or cow-tree of Venezuela..contains thirty per cent. of galactin. 2. †a. = casein n. 1a. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΚΠ 1848 R. Dunglison Med. Lexicon (ed. 7) 378/2 Galactine, casein. 1854 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 356/1 Galactin, the coagulating principle of milk... Germ. anal...Käsestoff, m. †b. A gelatinous substance found especially in milk. Obsolete. ΘΚΠ the world > food and drink > food > dairy produce > [noun] > milk > constituents or extracts of milk frangipane1844 galactin1854 solids-not-fat1874 Plasmon1900 1854 tr. A. Morin in Chemist 1 657 This property, and the circumstance that the gelatiniform matter exists in considerable quantity in the lactescent secretions, justify the name of galactine, by which I propose to designate it. 1879 A. W. Blyth in Jrnl. Chem. Soc. 35 532 After the liquid from which the galactin has been removed had been freed from the excess of lead by hydrogen sulphide, an alkaloïdal colouring matter..may be separated. 1881 Science 9 Apr. 168/2 The same mixture with small quantities of peptones represents the galactine of Morin. c. An amorphous proteinaceous substance found in whey. Now disused. ΚΠ 1879 A. W. Blyth in Jrnl. Chem. Soc. 35 532 On filtering from the mercury sulphide the lead salt, a substance, to which I propose to give the name of galactin, is thrown down by the addition of acetate of lead. 1937 A. L. Winton & K. B. Winton Struct. & Composition Foods III. i. 85 The lactoprotein found in whey..was shown by Blyth in 1879 to be a mixture from which he separated two substances, ‘galactin’ and ‘lactochrome’... More recent investigators question the identity of these substances. 3. a. A plant polysaccharide consisting of galactose residues; = galactan n. Now disused. ΘΚΠ the world > matter > chemistry > organic chemistry > carbohydrates > sugars > polysaccharides > [noun] > other polysaccharides trehalose1862 triticin1874 galactin1882 callose1890 floridean starch1902 levan1902 leucosin1914 arabinogalactan1928 laminarin1934 glucan1943 zymosan1943 agarose1953 laminaran1961 1882 Jrnl. Amer. Chem. Soc. 4 231 On galactin... Extracted from the seeds of Lucerne. 1886 Jrnl. Chem. Soc. 50 609 This carbohydrate [from the seed of Lupinus luteus] very closely resembles galactin (or adopting Scheibler's nomenclature galactan), obtained by Muntz from the seed of the lucerne. 1908 W. T. Hall & G. Defren tr. E. Abderhalden Text-bk. Physiol. Chem. iii. 44 In the constructive-tissue of Lupinus luteus is found galactin, a carbohydrate of this group yielding only galactose upon complete hydrolysis. †b. = lactose n. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > matter > chemistry > organic chemistry > carbohydrates > sugars > oligosaccharides > [noun] > disaccharides > lactose sugar of milk1753 lactose1847 galactin1885 1885 New Sydenham Soc. Lexicon Galactin... Also, the same as lactin. 4. = prolactin n. Now rare. ΘΚΠ the world > life > biology > substance > process stimulators or inhibitors > hormone > [noun] > other hormones thyro-iodine1896 parathormone1925 parathyroid hormone1925 oestrin1926 oestrogen1927 relaxin1930 theelin1930 prolan1931 galactin1932 inhibin1932 prolactin1932 oestriol1933 oestrone1933 oestradiol1934 adrenocorticotrophin1943 pancreozymin1943 ADH1945 adrenocorticotropin1945 cortisone1949 mineralocorticoid1950 electrocortin1953 aldosterone1954 angiotensin1958 melatonin1958 calcitonin1961 zeranol1971 amylin1988 adiponectin1999 adipokine2001 1932 C. W. Turner & W. U. Gardner in Abstr. Papers presented at 27th Ann. Meeting Amer. Dairy Sci. Assoc. 10 Because it appears to be the first true galactogogue isolated, we have called this hormone galactin. 1952 S. J. Folley in A. S. Parkes Marshall's Physiol. Reprod. (ed. 3) II. xx. 558 When first discovered it was variously named prolactin (Riddle), galactin (Turner) and mammotropin (Lyons). This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022). < n.1831
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