char = S;code = 83
char = e;code = 101
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char = i;code = 105
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char = p;code = 112
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char = l;code = 108
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char = l;code = 108
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char = u;code = 117
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char = s;code = 115
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char = o;code = 111
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char = h;code = 104
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char = g;code = 103
char = h;code = 104
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char = m;code = 109
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char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = .;code = 46
result sql = Secondary and tertiary polydiallylammonium salts: novel polymers with high antimicrobial activity.
Secondary and tertiary polydiallylammonium salts: novel polymers with high antimicrobial activity.
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char = v;code = 118
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char = f;code = 102
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char = f;code = 102
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char = e;code = 101
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char = t;code = 116
char = h;code = 104
char = ;code = 32
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char = e;code = 101
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = f;code = 102
char = r;code = 114
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char = e;code = 101
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char = a;code = 97
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char = l;code = 108
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char = (;code = 40
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char = A;code = 65
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char = e;code = 101
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char = ;code = 32
char = o;code = 111
char = b;code = 98
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char = a;code = 97
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char = n;code = 110
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = s;code = 115
char = ;code = 32
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char = g;code = 103
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char = m;code = 109
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char = l;code = 108
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char = r;code = 114
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = H;code = 72
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char = c;code = 99
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char = b;code = 98
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char = ;code = 32
char = t;code = 116
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char = e;code = 101
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char = a;code = 97
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char = i;code = 105
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char = i;code = 105
char = t;code = 116
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char = ;code = 32
char = n;code = 110
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char = e;code = 101
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char = ;code = 32
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
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char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
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char = e;code = 101
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char = P;code = 80
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char = A;code = 65
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char = A;code = 65
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char = W;code = 87
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char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;;code = 59
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = d;code = 100
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = a;code = 97
char = l;code = 108
char = t;code = 116
char = -;code = 45
char = f;code = 102
char = r;code = 114
char = e;code = 101
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = K;code = 75
char = C;code = 67
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = i;code = 105
char = g;code = 103
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = b;code = 98
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = B;code = 66
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = b;code = 98
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = q;code = 113
char = u;code = 117
char = e;code = 101
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = k;code = 107
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = ,;code = 44
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = o;code = 111
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = -;code = 45
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = b;code = 98
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = h;code = 104
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = P;code = 80
char = E;code = 69
char = I;code = 73
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = o;code = 111
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ,;code = 44
char = ;code = 32
char = B;code = 66
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = P;code = 80
char = E;code = 69
char = I;code = 73
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = v;code = 118
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = m;code = 109
char = s;code = 115
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = -;code = 45
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = h;code = 104
char = i;code = 105
char = p;code = 112
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = r;code = 114
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = m;code = 109
char = i;code = 105
char = s;code = 115
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = y;code = 121
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = E;code = 69
char = .;code = 46
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = l;code = 108
char = i;code = 105
char = ;code = 32
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = t;code = 116
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = y;code = 121
char = n;code = 110
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = s;code = 115
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = P;code = 80
char = D;code = 68
char = A;code = 65
char = M;code = 77
char = A;code = 65
char = T;code = 84
char = F;code = 70
char = A;code = 65
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = h;code = 104
char = i;code = 105
char = b;code = 98
char = i;code = 105
char = t;code = 116
char = ,;code = 44
char = ;code = 32
char = u;code = 117
char = n;code = 110
char = l;code = 108
char = i;code = 105
char = k;code = 107
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = q;code = 113
char = u;code = 117
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = i;code = 105
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = k;code = 107
char = n;code = 110
char = o;code = 111
char = w;code = 119
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = f;code = 102
char = f;code = 102
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = b;code = 98
char = i;code = 105
char = o;code = 111
char = c;code = 99
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = c;code = 99
char = e;code = 101
char = e;code = 101
char = d;code = 100
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = t;code = 116
char = .;code = 46
char = ;code = 32
char = N;code = 78
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = y;code = 121
char = t;code = 116
char = e;code = 101
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
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char = h;code = 104
char = e;code = 101
char = ;code = 32
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char = e;code = 101
char = c;code = 99
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char = n;code = 110
char = d;code = 100
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char = y;code = 121
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char = t;code = 116
char = e;code = 101
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char = t;code = 116
char = i;code = 105
char = a;code = 97
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char = y;code = 121
char = ;code = 32
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char = y;code = 121
char = r;code = 114
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char = o;code = 111
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char = i;code = 105
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = c;code = 99
char = y;code = 121
char = c;code = 99
char = l;code = 108
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result sql = Antimicrobial activity of secondary and tertiary poly(diallylammonium) salts (PDAAs) had not been reported before. Due to difficulties with preparation of polymers from the monomers of the diallylamine (DAA) series in the nonquaternary form, up to recently it was not possible to obtain PDAAs with a sufficiently high molecular mass. Here, we describe the investigations of antimicrobial activity of novel water-soluble cationic polyelectrolytes of the PDAA series, namely secondary poly(diallylammonium trifluoroacetate) (PDAATFA) and tertiary poly(diallylmethylammonium trifluoroacetate) (PDAMATFA), in synthesis of which we have recently succeeded, against gram-positive and gram-negative bacteria, and fungi. We have studied the effect of molecular weight (polymeric chain length) and ionic strength of solution on the biocidal efficiency of those polymers; in addition, the concentration dependences of PDAATFA reduced viscosity in salt-free and KCl aqueous solutions have been investigated. The antimicrobial properties of polybase polydiallylamine (BPDAA), which was obtained in an aqueous solution of PDAATFA in presence of alkali, have been also studied as well as biocidal activity of commercial open-chain polybase branched PEI. Those PDAATFA, BPDAA and PEI polymers served as the systems to study the structure-activity relationships. Transmission electronic microscopy study was carried out to characterize the mode of antimicrobial action of PDAATFA using E. coli . It was shown that the synthesized PDAATFA and PDAMATFA exhibit, unlike the quaternary polymers of this series, a rather high biocidal efficiency that is comparable with the activity of known effective cationic polymer biocides or exceeds it. Novel polyelectrolytes exhibit quite strong biocidal properties at different conditions including aqueous solutions of moderate ionic strength (serum, 0.01 M/0.1 M) and aqueous-alkaline solutions (pH 10.5) until the macrochain retains some positive charge, but complete neutralization of the polyelectrolyte in a 1 M salt solution results in the loss of its biocidal activity. The obtained results evidence that the structure of links, which combine the hydrophobic pyrrolidinium rings with the hydrophilic secondary/tertiary ammonium groups, is responsible for the high biocidal activity of the PDAAs. Polymeric nature of the synthesized compounds is one of the most significant factors of their bactericidal efficiency, unlike their high fungicidal activity, which is evidently related to the secondary/tertiary pyrrolidinium cycle.

Publication: Biomacromolecules 2009 Nov 9 ;10(11)::2976-86. :doi: 10.1021/bm900435v.
Publication Date: 2009 Nov 9
Study Author(s): Timofeeva, Larisa M;Kleshcheva, Natalia A;Moroz, Antonina F;Didenko, Lyubov V;
Institution: A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky prosp. 29, Moscow, Russia. [email protected]
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Antimicrobial activity of secondary and tertiary poly(diallylammonium) salts (PDAAs) had not been reported before. Due to difficulties with preparation of polymers from the monomers of the diallylamine (DAA) series in the nonquaternary form, up to recently it was not possible to obtain PDAAs with a sufficiently high molecular mass. Here, we describe the investigations of antimicrobial activity of novel water-soluble cationic polyelectrolytes of the PDAA series, namely secondary poly(diallylammonium trifluoroacetate) (PDAATFA) and tertiary poly(diallylmethylammonium trifluoroacetate) (PDAMATFA), in synthesis of which we have recently succeeded, against gram-positive and gram-negative bacteria, and fungi. We have studied the effect of molecular weight (polymeric chain length) and ionic strength of solution on the biocidal efficiency of those polymers; in addition, the concentration dependences of PDAATFA reduced viscosity in salt-free and KCl aqueous solutions have been investigated. The antimicrobial properties of polybase polydiallylamine (BPDAA), which was obtained in an aqueous solution of PDAATFA in presence of alkali, have been also studied as well as biocidal activity of commercial open-chain polybase branched PEI. Those PDAATFA, BPDAA and PEI polymers served as the systems to study the structure-activity relationships. Transmission electronic microscopy study was carried out to characterize the mode of antimicrobial action of PDAATFA using E. coli . It was shown that the synthesized PDAATFA and PDAMATFA exhibit, unlike the quaternary polymers of this series, a rather high biocidal efficiency that is comparable with the activity of known effective cationic polymer biocides or exceeds it. Novel polyelectrolytes exhibit quite strong biocidal properties at different conditions including aqueous solutions of moderate ionic strength (serum, 0.01 M/0.1 M) and aqueous-alkaline solutions (pH 10.5) until the macrochain retains some positive charge, but complete neutralization of the polyelectrolyte in a 1 M salt solution results in the loss of its biocidal activity. The obtained results evidence that the structure of links, which combine the hydrophobic pyrrolidinium rings with the hydrophilic secondary/tertiary ammonium groups, is responsible for the high biocidal activity of the PDAAs. Polymeric nature of the synthesized compounds is one of the most significant factors of their bactericidal efficiency, unlike their high fungicidal activity, which is evidently related to the secondary/tertiary pyrrolidinium cycle.
PMID: 19795886

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