What's the difference between sugar and trehalose?

Sugar


Definition:

  • (n.) A sweet white (or brownish yellow) crystalline substance, of a sandy or granular consistency, obtained by crystallizing the evaporated juice of certain plants, as the sugar cane, sorghum, beet root, sugar maple, etc. It is used for seasoning and preserving many kinds of food and drink. Ordinary sugar is essentially sucrose. See the Note below.
  • (n.) By extension, anything resembling sugar in taste or appearance; as, sugar of lead (lead acetate), a poisonous white crystalline substance having a sweet taste.
  • (n.) Compliment or flattery used to disguise or render acceptable something obnoxious; honeyed or soothing words.
  • (v. i.) In making maple sugar, to complete the process of boiling down the sirup till it is thick enough to crystallize; to approach or reach the state of granulation; -- with the preposition off.
  • (v. t.) To impregnate, season, cover, or sprinkle with sugar; to mix sugar with.
  • (v. t.) To cover with soft words; to disguise by flattery; to compliment; to sweeten; as, to sugar reproof.

Example Sentences:

  • (1) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
  • (2) In addition to the changes associated with blood group A, we also found a decrease in sugar content, alterations in other antigens, and changes in the levels of several glycosyltransferases in cancerous tissues.
  • (3) Their contour lengths varied from 0.28 to 51 micron, but unlike in the case of maize, a large difference was not observed in the distribution of molecular classes greater than 1.0 micron between N and S cytoplasms of sugar beet.
  • (4) As a group, the three mammalian proteins resemble bovine serum conglutinin and behave as lectins with rather broad sugar specificities directed at certain non-reducing terminal N-acetylglucosamine, mannose, glucose and fucose residues, but with subtle differences in fine specificities.
  • (5) TK1 showed the most restricted substrate specificity but tolerated 3'-modifications of the sugar ring and some 5-substitutions of the pyrimidine ring.
  • (6) 500-MHz H-NMR spectroscopy of the oligosaccharides derived from gamma-seminoprotein, a human seminal plasma glycoprotein, revealed considerable microheterogeneity both with respect to the degree of branching and with regard to the peripheral sugars.
  • (7) The percentage of energy from fat and added sugars and the amount of sodium and fibre in the diet tended to increase with energy intake.
  • (8) D-Mannitol has not so far been known as a major product of sugar metabolism by yeasts.
  • (9) The concentration dependences of response of frog tongue to D-fructose, D-glucose, and sucrose were almost the same, D-galactose, however, elicited a much larger response in comparison with the other sugars in the whole range of concentrations examined.
  • (10) A brevibacterium, strain TH-4, previously isolated by aerobic enrichment on the monocyclic monoterpenoid cis-terpin hydrate as a sole carbon and energy source, was found to grow on alpha-terpineol and on a number of common sugars and organic acids.
  • (11) These results provide no support for the claims that aprotinin prevents the activation of sugar transport in muscle by contractile activity or that bradykinin is the muscle activity hypoglycemia factor.
  • (12) Increased erythrocyte levels of the pyrimidine-sugar UDP-glucose were also found in patients with the highest orotidine levels.
  • (13) Each of the three A toxins consists of a single basic polypeptide chain of 93 to 99 residues, cross-linked by three or four disulfide bonds, lacking reducing sugar and cysteinyl residues.
  • (14) Well-refined x-ray structures of the liganded forms of the wild-type and a mutant protein isolated from a strain defective in chemotaxis but fully competent in transport have provided a molecular view of the sugar-binding site and of a site for interacting with the Trg transmembrane signal transducer.
  • (15) Two newly discovered enzymes have the capacity to metabolize these sugars but are not essential for their catabolism in wild-type cells.
  • (16) Often, flavorings such as chocolate and strawberry and sugars are added to low-fat and skim milk to make up for the loss of taste when the fat is removed.
  • (17) All components studied, namely amino-sugars, hexoses and neuraminic acid increased with age in men.
  • (18) The presence of serum in the phagocytosis assay did not affect either phagocytosis of Phz-treated RBCs or inhibition by sugars.
  • (19) In addition, 5-imino-derivatives of daunorubicin modified at sugar moiety were less effective in stimulating NADH oxidation and oxygen radical production than 5-iminodaunorubicin itself.
  • (20) Photobinding of 8-methoxypsoralen to 2'-deoxyadenosine also occurs, with covalent bond formation between carbon 3 or 4 of the pyrone ring and the sugar moiety of the nucleoside.

Trehalose


Definition:

  • (n.) Mycose; -- so called because sometimes obtained from trehala.

Example Sentences:

  • (1) After absorption of labeled glucose, two pools of trehalose are found in dormant spores, one of which is extractable without breaking the spores, and the other, only after the spores are disintegrated.
  • (2) The results presented here substantiate the hypothesis that in S. cerevisiae trehalose supplies energy during dormancy of the spores and not during the germination process.
  • (3) In tuberculosis this effect has been indirectly attributed to the production of cord factor (alpha,alpha-trehalose 6,6'-dimycolate).
  • (4) Flight-induced activation of phosphorylase is prevented when the release of AKH from the corpus cardiacum is blocked by the presence of high trehalose levels in the hemolymph, and also when the production of AKH is made impossible by prior removal of the corpus cardiacum glandular lobe.
  • (5) We report that E. coli K-12 and W1485 (sup0) accumulated trehalose but that they required a higher osmotic strength in the growth medium than that required by their sup+ derivatives.
  • (6) Murine peritoneal macrophages activated for cytotoxicity by trehalose dimycolate in vivo and lipopolysaccharide in vitro released cytostatic factor(s) against EMT6 target cells, in 8-hr conditioned medium (CM).
  • (7) We showed previously that trehalose dimycolate (TDM) in oil administered intraperitoneally into susceptible mice produced interstitial and hemorrhagic pneumonitis by the seventh day after injection and that mature T cells are necessary for the production of these lesions.
  • (8) A sharp rise in trehalose level of haemolymph is observed towards the end of 4th instar accompanied with sudden fall of the sugar in fat body during the same period, but after moulting blood trehalose abruptly decreases.
  • (9) In these crude enzyme fractions, high concentrations of trehalose-P inhibited the ADP-Glc and GDP-Glc pyrophosphorylases but did not effect the UDP-Glc or TDP-Glc pyrophosphorylases.
  • (10) We conclude that although development of pulmonary lesions in trehalose dimycolate-treated mice is a T-cell-dependent process, macrophages are also essential and are more directly involved in production of the lung injury.
  • (11) The other major soluble carbohydrate of the sporophore, trehalose, decreased throughout the growth of the sporophore; a parallel decrease was observed in the mycelium.
  • (12) The trehalose molecular was found to be esterified by a complex mixture of corynomycolic acids (3-hydroxy 2-alkyl fatty acids) which were present as saturated, mono-unsaturated and di-unsaturated homologues (carbon numbers C32 to C24).
  • (13) The addition of 0.25 M trehalose or sucrose to LEH results in the maintenance of liposomal size following lyophilization.
  • (14) The penetrant solute glycerol did not induce trehalose synthesis indicating that the loss of cell turgor rather than increasing medium osmolality per se was the mechanism stimulating trehalose synthesis.
  • (15) Trehalose appears to reduce the direct interbilayer hydrogen bond coupling thereby modifying the thermal stability and the phase transition mechanism of the bilayers.
  • (16) alpha-Trehalose was found in the aqueous phase after saponification of the product.
  • (17) Most of them were identified as biotypes D and B, only a few as biotype A, and none as biotype C. Moreover, among the 24 S intermedius strains (96 per cent) biotypes 1 and 2 could be differentiated according to the type of growth on crystal violet agar and their ability to produce acetoin and acid from maltose, mannitol and trehalose.
  • (18) The primary response of bacteria to exposure to a high osmotic environment is the accumulation of certain solutes, K+, glutamate, trehalose, proline, and glycinebetaine, at concentrations that are proportional to the osmolarity of the medium.
  • (19) The adjuvant effects of dimethyl dioctadecyl ammonium bromide (DDA) alone or in combination with trehalose dimycolate (TDM) or muramyl dipeptide (MDP) on bovine humoral and cellular responses to a soluble protein extract of gamma irradiated Brucella abortus strain 19 (SPEBA) were investigated.
  • (20) These results suggest that trehalose synthesis would require G-6-P formation derived from maltose.

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