MacConkeyn.

Brit.

/məˈkɒnki/, U.S.

/məˈkɑnki/

Forms: 1900s– MacConkey, 1900s– McConkey.

Origin: From a proper name. Etymon: proper name MacConkey.

Etymology: < the name of Alfred Theodore MacConkey (1861–1931), British bacteriologist, who developed the methods (described by him in The Lancet (1900) 7 July 20/1).

Microbiology.

I. Compounds.

1. attributive and in the genitive. Used with reference to methods for the selective culture and identification of enteric bacteria; spec. (now chiefly in MacConkey agar) designating a bacterial culture medium containing bile salts, lactose and a pH indicator (see quot. 1996).

ΚΠ

1902 J. W. H. Eyre Elements Bacteriol. Technique Index 367/2 MacConkey's capsule, stain, media.

1910 P. Hanson & H. Zinsser Textbk. Bacteriol. (heading) 138 MacConkey's bile-salt agar.

1938 Jrnl. Hygiene 38 316 A positive 44°C MacConkey test is indicative of the presence of Bact. coli I.

1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xviii. 240 Subcultures from the fluid media are made on to MacConkey's medium, from which non-lactose-fermenters are picked off and examined.

1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xviii. 256 The specific types..are identified by the slide agglutination technique with individual colonies from blood-agar or MacConkey plates.

1955 J. G. Davis Dict. Dairying (ed. 2) 266 A tube of MacConkey broth is heated in a water bath to 44°C and inoculated lightly from the peptone water culture.

1975 Amer. Jrnl. Clin. Pathol. 64 378 The morphologic and biochemical properties of Corynebacterium aquaticum should be considered for separation from related organisms such as Listeria monocytogenes, Corynebacterium species and oxidative Gram-negative rods that do not grow on MacConkey medium (Flavobacterium spp.).

1996 L. M. Prescott et al. Microbiology (ed. 6) 683 MacConkey agar is used for the selection and recovery of Enterobacteriaceae and related gram-negative rods. The bile salts and crystal violet in this medium inhibit the growth of gram-positive bacteria and some fastidious gram-negative bacteria... Lactose-fermenting bacteria produce colonies that are various shades of red, whereas nonlactose fermenters produce colorless colonies.

II. Simple uses.

2. A MacConkey culture medium; esp. MacConkey agar.

ΘΚΠ

the world > life > biology > laboratory analysis > material > [noun] > culture or medium

culture1880

blood culture1881

cultivation1881

culture medium1883

pure culture1883

agar1885

broth1885

subculture1885

tube-culture1886

bouillon1887

stab-culture1889

streak culture1892

blood agar1893

microculture1893

shake culture1894

streak plate1895

broth culture1897

slant1899

plating1900

stock culture1903

touch preparation1908

tissue culture1912

plaque1924

slope1925

agar-agar1929

isolate1931

MacConkey1938

auxanogram1949

lawn1951

monolayer1952

replica plate1952

1938 Jrnl. Hygiene 38 311 10 ml. of the sample are inoculated into each of five tubes of double-strength MacConkey.

1992 Appl. Bacteriol. 73 168 MacConkey (MC), membrane lauryl sulphate (MIS), membrane faecal coliform emended with rosolic acid (MFC + R) and without the acid (MFC - R) were evaluated.

This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).

单词	macconkey
释义	MacConkeyn. Brit. /məˈkɒnki/, U.S. /məˈkɑnki/ Forms: 1900s– MacConkey, 1900s– McConkey. Origin: From a proper name. Etymon: proper name MacConkey. Etymology: < the name of Alfred Theodore MacConkey (1861–1931), British bacteriologist, who developed the methods (described by him in The Lancet (1900) 7 July 20/1). Microbiology. I. Compounds. 1. attributive and in the genitive. Used with reference to methods for the selective culture and identification of enteric bacteria; spec. (now chiefly in MacConkey agar) designating a bacterial culture medium containing bile salts, lactose and a pH indicator (see quot. 1996). ΚΠ 1902 J. W. H. Eyre Elements Bacteriol. Technique Index 367/2 MacConkey's capsule, stain, media. 1910 P. Hanson & H. Zinsser Textbk. Bacteriol. (heading) 138 MacConkey's bile-salt agar. 1938 Jrnl. Hygiene 38 316 A positive 44°C MacConkey test is indicative of the presence of Bact. coli I. 1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xviii. 240 Subcultures from the fluid media are made on to MacConkey's medium, from which non-lactose-fermenters are picked off and examined. 1953 R. W. Fairbrother Text-bk. Bacteriol. (ed. 7) xviii. 256 The specific types..are identified by the slide agglutination technique with individual colonies from blood-agar or MacConkey plates. 1955 J. G. Davis Dict. Dairying (ed. 2) 266 A tube of MacConkey broth is heated in a water bath to 44°C and inoculated lightly from the peptone water culture. 1975 Amer. Jrnl. Clin. Pathol. 64 378 The morphologic and biochemical properties of Corynebacterium aquaticum should be considered for separation from related organisms such as Listeria monocytogenes, Corynebacterium species and oxidative Gram-negative rods that do not grow on MacConkey medium (Flavobacterium spp.). 1996 L. M. Prescott et al. Microbiology (ed. 6) 683 MacConkey agar is used for the selection and recovery of Enterobacteriaceae and related gram-negative rods. The bile salts and crystal violet in this medium inhibit the growth of gram-positive bacteria and some fastidious gram-negative bacteria... Lactose-fermenting bacteria produce colonies that are various shades of red, whereas nonlactose fermenters produce colorless colonies. II. Simple uses. 2. A MacConkey culture medium; esp. MacConkey agar. ΘΚΠ the world > life > biology > laboratory analysis > material > [noun] > culture or medium culture1880 blood culture1881 cultivation1881 culture medium1883 pure culture1883 agar1885 broth1885 subculture1885 tube-culture1886 bouillon1887 stab-culture1889 streak culture1892 blood agar1893 microculture1893 shake culture1894 streak plate1895 broth culture1897 slant1899 plating1900 stock culture1903 touch preparation1908 tissue culture1912 plaque1924 slope1925 agar-agar1929 isolate1931 MacConkey1938 auxanogram1949 lawn1951 monolayer1952 replica plate1952 1938 Jrnl. Hygiene 38 311 10 ml. of the sample are inoculated into each of five tubes of double-strength MacConkey. 1992 Appl. Bacteriol. 73 168 MacConkey (MC), membrane lauryl sulphate (MIS), membrane faecal coliform emended with rosolic acid (MFC + R) and without the acid (MFC - R) were evaluated. This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022). < n.1902
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