What's the difference between casein and tryptone?
Casein
Definition:
(n.) A proteid substance present in both the animal and the vegetable kingdom. In the animal kingdom it is chiefly found in milk, and constitutes the main part of the curd separated by rennet; in the vegetable kingdom it is found more or less abundantly in the seeds of leguminous plants. Its reactions resemble those of alkali albumin.
Example Sentences:
(1) Concentrations of alpha-lactalbumin and alpha s1-casein were measured in media and explant homogenates by radioimmunoassay, as an index of lactogenesis.
(2) Mixtures of 2 components involving kappa-casein were more readily dephosphorylated than alphas- and beta-casein mixtures.
(3) Human growth hormone stimulated the casein secretion to the same extent as prolactin.
(4) Histochemical and immunocytochemical staining of the outgrowths with reagents that depict epithelial, myoepithelial, and lactating alveolar cells (peanut lectin alone, monoclonal and polyclonal antibodies to rat caseins) indicate similar cell compositions and arrangements for all outgrowths irrespective of their source; these are also similar to the mammary glands of the perphenazine-stimulated or lactating hosts.
(5) The current studies suggest that the autochthonous mammary tumor cells, independent of estrogen for cell growth, were still inducible for casein gene expression in vitro and in vivo by appropriate hormones.
(6) Of the two chymosin fragments of kappa-casein, glycomacropeptide was an inhibitor but p-kappa-casein was not.
(7) The single site of troponin T which exists in a phosphorylated state in vivo (residue Ser-1) undergoes phosphorylation by specific protein kinase (troponin T kinase) related to casein kinases II.
(8) A group of 36 young adult male wistar rats was fed a protein-free diet ad libitum for five weeks; a second group of 36 wistar rats ingested a purified isocaloric 12,5% casein diet for the same period.
(9) Pre-treatment of human neutrophils with myelin basic protein selectively inhibits the formyl-peptide-induced chemotaxis, without affecting chemotaxis evoked by casein and activated serum.
(10) One developed a toxic dilatation of the colon and responded well to a casein hydrolysate based feed.
(11) The regulatory region of the casein gene contains two different TATA signals flanking the duplication site in the promoter region.
(12) A mixture of amino acids simulating the amino acid pattern of casein was used with the same efficiency as casein.
(13) However, telolysosomes did increase temporarily at the onset of lactation and casein micelles were identified within secondary lysosomes throughout the lactation stage.
(14) Similar concentrations also increased directional movement of polymorphonuclear leukocytes to both endotoxin-activated serum and hydrolyzed casein.
(15) Some deviation was noticed in the weights of kidneys and adrenals of the chlorogec acid-free casein diet.
(16) Lower peptides and amino acids in hydrolyzates of casein obtained with protosubtilin were determined using high pressure liquid chromatography (HPLC).
(17) The loss of enzymatic activity towards casein and N-acetyl-L-tyrosine ethyl ester closely correlates with the destruction of one histidyl residue.
(18) Adlloy, 0.3 g or 3 g per body weight (kg), was fed orally with the basal diet consisting of casein, sucrose, bean oil, mineral, and vitamin mixtures.
(19) The protein efficacy of the krill meat slightly decreases in the course of canned food sterilization, However, their biological value remains high, being inferior to casein but insignificantly.
(20) The results of our study show that the substitution of soy protein for casein can be of benefit in those patients who need a long-term hypocaloric diet.
Tryptone
Definition:
(n.) The peptone formed by pancreatic digestion; -- so called because it is formed through the agency of the ferment trypsin.
Example Sentences:
(1) Counts of E. coli were also higher on mFC agar (without rosalic acid) after a period of resuscitation on tryptone-soy agar supplemented with 0.1% yeast extract than on a 4% Teepol-lactose medium.
(2) Neuraminidase inductions were primarily studied with tryptone-yeast extract-grown cells after washing and resuspension in a defined replacement medium.
(3) Cells growing in yeast extract-tryptone-sodium chloride medium (LB broth) were lysed upon the addition of lactose.
(4) McBride Listeria agar (MLA), gum base nalidixic acid tryptone soy agar (GBNTSA), modified Despierres agar (MDA), and modified MLA (MMLA) performed best for recovering all inoculum populations from milk and ice cream mix.
(5) Supplementing NB with tryptone or casein reduced the toxicity of cocoa.
(6) Modified Despierres agar and modified McBride Listeria agar yielded poorer recovery of heat-injured cells than did McBride Listeria agar and gum base-nalidixic acid-tryptone soya agar.
(7) Growth on glutamate in the dark took place without an initial lag phase, whereas growth on tryptone began only after a 2-day lag phase that could be abolished by the simultaneous presence of glucose.
(8) Such media will be quite favourable for certain culturing problems, but complex substrate (yeast extract, peptone, tryptone) should be added for high yields.
(9) The sources which mostly supported the biosynthesis of the inhibitors were tryptone (3%) for TI-1, and peptone (3%) for CI-1 respectively.
(10) A medium based upon tryptone, yeast extract, cystine (TYC) agar and incorporating bacitracin and sucrose has been evaluated for selective isolation of Streptococcus mutans.
(11) Growth of the isolates in an acidified tryptone-yeast extract medium was accompanied by a rise in the pH of the medium from 3.5 to above 7.0 Ammonia production, as indicated by Nesslerization, was associated with the deamination of glutamic and aspartic acids.
(12) The extracellular growth products of Micropolyspora faeni, Thermoactinomyces vulgaris and Thermoactinomyces candidus were prepared by three methods; (1) double dialysis; (2) growth in tryptone soya broth (TSB) and (3) synthetic broth (AOAC).
(13) Using ion-exchange columns, humic acid and the amino acids of tryptone were found to be anionic and cationic in water (pH 7.0), respectively.
(14) Ability of flush without disinfectant to clear sets of contamination was analyzed by collecting multiple samples at each step of the procedure, enriching with tryptone broth and verifying bacterial growth.
(15) Soluble organics, such as tryptone, yeast extract, cysteine, succinic acid, and increasing concentrations of neopeptone, also reduced the toxicity of Pb.
(16) Thus, heat damage was repaired in tryptone broth but not on tryptone agar.
(17) In contrast to the repression observed when cells were grown on glucose, sucrose, or fructose, system II was not repressed by growth on tryptone and casein hydrolysate.
(18) The inoculation of Aspergillus flavus spores into a culture of Streptococcus lactis in Lablemco tryptone broth medium resulted in little or no aflatoxin accumulation even though the growth of the fungus was not hindered.
(19) The necessity to transfer membranes from the non-selective medium tryptone soy agar (TSA) to the selective medium tryptone bile agar (TBA) after pre-incubation for 4 h was considered disadvantageous for practical purposes.
(20) In tryptone broth, recA or polA mutants also recovered but a lex mutant did not.