What's the difference between casein and whey?

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.

Whey


Definition:

  • (n.) The serum, or watery part, of milk, separated from the more thick or coagulable part, esp. in the process of making cheese.

Example Sentences:

  • (1) Whey obtained by acid precipitation or by the application of rennin was devoid of bactericidal activity but was capable of slowing down proliferation of E coli.
  • (2) In respective curds 35.6, 47.1 and 57.7% of Aflatoxin M1 are recovered and 64.4, 52.9 and 42.3% in respective whey.
  • (3) Bovine colostrum whey and immunoglobulins were prepared.
  • (4) (v) Cells on all substrata examined lose virtually all mRNA for whey acidic protein despite the fact that this mRNA is abundant in the mammary gland itself; we conclude that additional, as-yet-unknown, factors are necessary for synthesis and secretion of whey acidic protein in culture.
  • (5) For obtaining protein isolates, water, whey, and waste effluents from a potato processing plant were used as extraction solvents.
  • (6) Concentrate rations during experimental period were: 1) control, 2) 14% dried whole whey, 3) 5.9% high mineral whey product, 4) 11.8% demineralized whey product, and 5) 9.8% lactose.
  • (7) Using a complex, but soluble supplement (whey powder) it is shown that reproducible incremental measurements can be made and that the supplement used gives increases in production of characteristic end-products only (carbon dioxide, methane, acetic and butyric acids).
  • (8) Whey acidic protein (WAP) is a major whey protein in mouse milk.
  • (9) S. aureus strains grown in TSB exhibited hydrophobic surface properties, whereas homologous strains grown in milk whey were hydrophilic.
  • (10) Different adsorption and chelating chromatographic methods were used to isolate immunoglobulins and lactoferrin from cheese whey.
  • (11) A milk protein, occurring in the whey fraction, has been characterized from camel milk.
  • (12) The alpha 2M preparation from mastitis whey migrated essentially as native alpha 2M, representing the 'slow' form of the molecule.
  • (13) It is suggested that this carbohydrate facilitates the adhesion of starter bacteria to the cheese-curd matrix and that during the initial stages of syneresis this serves to prevent their expulsion from the curd with the whey.
  • (14) This is the first documented case of an immunological reaction to the hydrolyzed whey protein, lactalbumin.
  • (15) Incubation of lymphocytes in whey that inhibited thymidine incorporation did not affect DNA synthesis in subsequent culturing of the same cells without whey.
  • (16) Addition of dried skim milk or dried whey to the diet resulted in higher values (P less than .05) for DMD and ED as compared with the basal or corn-soy and lard diet.
  • (17) Fifty to 500 microliter of whey were fractionated with a stepwise ionic strength gradient using water (buffer A) and increasing concentrations of .7 M sodium acetate (buffer B).
  • (18) The heating caused some whey proteins (beta-lactoglobulin) to enter the micelle fractions while the freeze-drying caused some of the largest micelles to disrupt.
  • (19) Most of the lactose of the whey had been utilized in all flask cultures after 168 hr at 29 C.
  • (20) The observed changes, after growth in milk whey, were not due to a mere adsorption of milk whey components.