Food Chemistry

1.3 Peptides 37 Table 1.15.Bitter taste of dipeptide A–B: dependence of recognition threshold value (mmol/l) on side chain hydro ...

38 1 Amino Acids, Peptides, Proteins Table 1.16.Taste of dipeptide esters of aspartic acida and of amino malonic acidb R^2 R^3 T ...

1.3 Peptides 39 of protein disulfide bonds and a correspond- ing decrease in molecular weight of some of the protein constituent ...

40 1 Amino Acids, Peptides, Proteins Table 1.19.Occurrence of carnosine, anserine and balenine (%) in meata Meat Carnosine Anser ...

1.4 Proteins 41 which determines the molecular conformation (secondary and tertiary structures). Proteins sometimes occur as mol ...

42 1 Amino Acids, Peptides, Proteins Fig. 1.10.Amino acid chromatogram. Separation of a mixture of amino acids (10 nmol/amino ac ...

1.4 Proteins 43 (1.84) The C-terminal amino acids can be removed enzymatically by carboxypeptidase A which preferentially cleave ...

44 1 Amino Acids, Peptides, Proteins (1.86) N→O-acyl migration via the oxazoline and sub- sequent hydrolysis of the ester bond: ...

1.4 Proteins 45 Fig. 1.11.Subtilisin BPN;peptidebonds hydrolyzed by trypsin (T), chymotrypsin (C), and pepsin (P) segment from t ...

46 1 Amino Acids, Peptides, Proteins through second, third and subsequent repetitive reactions: , (1.89) Microvariants allow wor ...

1.4 Proteins 47 Therefore, the primary sequence of a protein can be derived from the nucleotide (base) sequence. For the sequenc ...

48 1 Amino Acids, Peptides, Proteins Fig. 1.13.Fluorescence detection of electrophoreti- cally separated DNA fragments obtained ...

1.4 Proteins 49 small cyclic peptides or in proteins before proline residues). Thus in ribonuclease A, two X-Pro bonds have tran ...

50 1 Amino Acids, Peptides, Proteins Table 1.21.Regular structural elements (secondary structures) in polypeptides Structure Φ ψ ...

1.4 Proteins 51 Fig. 1.19.A pleated sheet structure of a peptide chain planar, parallel sheet structure. When the chains run in ...

52 1 Amino Acids, Peptides, Proteins Fig. 1.22.Right-handedα-helix Fig. 1.23.φ,ψ-Diagram with marked helix param- eters n (---) ...

1.4 Proteins 53 Fig. 1.24.Turns of the peptide chains (β-turns), types I–III.= carbon, = nitrogen,= oxygen. Theα-C atoms of th ...

54 1 Amino Acids, Peptides, Proteins occur only; (2)β-structures occur only; (3)α- helical andβ-structural portions occur in sep ...

1.4 Proteins 55 10 kJnm−^2. Therefore, the total hydrophobic con- tribution to free energy due to folding is: (1.92) This relati ...

56 1 Amino Acids, Peptides, Proteins Fig. 1.28.Tertiary structures (schematic: spiral:α-helix, arrow: pleated sheet) of theβ-cha ...