《食品化学与分析 Food Chemistry and Analysis》课程PPT教学课件（英文版）Protein

Amino Acids with Amides of Acidic Amino Acids Asparagine (ASN) (a - amino b - succinamide) Glutamine (GLN) (a - amino g - glutaramide) NH3 + C COO￾H CH2 C NH2 O NH3 + C COO￾H CH2 CH2 C NH2 O

Amino Acids with Amides of Acidic Amino Acids Asparagine (ASN) (a - amino b - succinamide) Glutamine (GLN) (a - amino g - glutaramide) NH3 + C COO￾H CH2 C NH2 O NH3 + C COO￾H CH2 CH2 C NH2 O

Basic Amino Acids Lysine (LYS) (a, e - diamino caproate) Arginine (ARG) (a - amino d - guanidine valerate) NH3 + C COO￾H CH2 CH2 CH2 CH2 NH3 + NH3 + C COO￾H CH2 CH2 CH2 NH C NH2 NH2 +

Basic Amino Acids Lysine (LYS) (a, e - diamino caproate) Arginine (ARG) (a - amino d - guanidine valerate) NH3 + C COO￾H CH2 CH2 CH2 CH2 NH3 + NH3 + C COO￾H CH2 CH2 CH2 NH C NH2 NH2 +

Histidine (HIS) (a - amino b - imidazole propionate) Basic Amino Acids NH3 + C COO￾H CH2 HN NH +

Histidine (HIS) (a - amino b - imidazole propionate) Basic Amino Acids NH3 + C COO￾H CH2 HN NH +

Sulfur-containing Amino Acids Cysteine (CYS H) (a - amino b - mercapto propionate) Cystine (CYS-CYS) Di(a - amino b - mercapto propionate) NH3 + C COO￾H CH2 SH N H3 + CH CH2 S S CH2 CH NH3 + COO￾COO-

Sulfur-containing Amino Acids Cysteine (CYS H) (a - amino b - mercapto propionate) Cystine (CYS-CYS) Di(a - amino b - mercapto propionate) NH3 + C COO￾H CH2 SH N H3 + CH CH2 S S CH2 CH NH3 + COO￾COO-

Methionine (MET) (a - amino g - methyl mercapto butyrate) Sulfur-containing Amino Acids NH3 + C COO￾H CH3 CH2 CH2 S

Methionine (MET) (a - amino g - methyl mercapto butyrate) Sulfur-containing Amino Acids NH3 + C COO￾H CH3 CH2 CH2 S