char = R;code = 82
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = a;code = 97
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = E;code = 69
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = e;code = 101
char = g;code = 103
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = i;code = 105
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = -;code = 45
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
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 = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = y;code = 121
char = .;code = 46
result sql = Rapid assay of vitamin E in vegetable oils by reversed-phase capillary electrochromatography.
Rapid assay of vitamin E in vegetable oils by reversed-phase capillary electrochromatography.
char = A;code = 65
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
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 = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = (;code = 40
char = C;code = 67
char = E;code = 69
char = C;code = 67
char = );code = 41
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = E;code = 69
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = v;code = 118
char = e;code = 101
char = g;code = 103
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = i;code = 105
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = p;code = 112
char = o;code = 111
char = r;code = 114
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = ;code = 32
char = V;code = 86
char = i;code = 105
char = t;code = 116
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = E;code = 69
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = u;code = 117
char = p;code = 112
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = e;code = 101
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
char = m;code = 109
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = T;code = 84
char = O;code = 79
char = H;code = 72
char = s;code = 115
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = o;code = 111
char = l;code = 108
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = s;code = 115
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
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = ;code = 32
char = T;code = 84
char = O;code = 79
char = H;code = 72
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = -;code = 45
char = ,;code = 44
char = ;code = 32
char = g;code = 103
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = -;code = 45
char = ,;code = 44
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = t;code = 116
char = a;code = 97
char = -;code = 45
char = T;code = 84
char = O;code = 79
char = H;code = 72
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = -;code = 45
char = t;code = 116
char = o;code = 111
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = -;code = 45
char = T;code = 84
char = O;code = 79
char = H;code = 72
char = -;code = 45
char = A;code = 65
char = c;code = 99
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = t;code = 116
char = y;code = 121
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = t;code = 116
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = (;code = 40
char = B;code = 66
char = H;code = 72
char = T;code = 84
char = );code = 41
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = T;code = 84
char = O;code = 79
char = H;code = 72
char = ;code = 32
char = a;code = 97
char = u;code = 117
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = p;code = 112
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = i;code = 105
char = z;code = 122
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 = C;code = 67
char = E;code = 69
char = C;code = 67
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = r;code = 114
char = e;code = 101
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 = i;code = 105
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = 7;code = 55
char = 5;code = 53
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = n;code = 110
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = (;code = 40
char = I;code = 73
char = D;code = 68
char = );code = 41
char = ;code = 32
char = f;code = 102
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = -;code = 45
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = y;code = 121
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = c;code = 99
char = k;code = 107
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
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char = t;code = 116
char = h;code = 104
char = ;code = 32
char = 3;code = 51
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = C;code = 67
char = (;code = 40
char = 1;code = 49
char = 8;code = 56
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char = );code = 41
char = s;code = 115
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char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = a;code = 97
char = r;code = 114
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char = p;code = 112
char = h;code = 104
char = a;code = 97
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char = e;code = 101
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char = (;code = 40
char = 3;code = 51
char = 3;code = 51
char = ;code = 32
char = c;code = 99
char = m;code = 109
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char = t;code = 116
char = o;code = 111
char = t;code = 116
char = a;code = 97
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char = l;code = 108
char = e;code = 101
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char = g;code = 103
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char = ,;code = 44
char = ;code = 32
char = 8;code = 56
char = .;code = 46
char = 4;code = 52
char = ;code = 32
char = c;code = 99
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 7;code = 55
char = ;code = 32
char = c;code = 99
char = m;code = 109
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 = a;code = 97
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char = d;code = 100
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = c;code = 99
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = e;code = 101
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char = g;code = 103
char = t;code = 116
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char = s;code = 115
char = ,;code = 44
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char = s;code = 115
char = p;code = 112
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char = c;code = 99
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char = i;code = 105
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = y;code = 121
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char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
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char = o;code = 111
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char = t;code = 116
char = i;code = 105
char = m;code = 109
char = u;code = 117
char = m;code = 109
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char = m;code = 109
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char = h;code = 104
char = a;code = 97
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char = s;code = 115
char = ;code = 32
char = a;code = 97
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char = p;code = 112
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = r;code = 114
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char = o;code = 111
char = r;code = 114
char = g;code = 103
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = c;code = 99
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char = p;code = 112
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
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char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
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char = m;code = 109
char = i;code = 105
char = x;code = 120
char = t;code = 116
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char = r;code = 114
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = m;code = 109
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char = h;code = 104
char = a;code = 97
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char = o;code = 111
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char = o;code = 111
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char = i;code = 105
char = t;code = 116
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char = i;code = 105
char = l;code = 108
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char = i;code = 105
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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 = 5;code = 53
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char = /;code = 47
char = v;code = 118
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char = c;code = 99
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char = i;code = 105
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char = 1;code = 49
char = %;code = 37
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char = e;code = 101
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char = n;code = 110
char = t;code = 116
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char = e;code = 101
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char = n;code = 110
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result sql = A rapid capillary electrochromatographic (CEC) method for the analysis of vitamin E in vegetable oils is reported. Vitamin E consists of a group of eight isomers, tocopherols (TOHs) and tocotrienols. The separation of four TOHs (alpha-, gamma-, delta-TOH), alpha-tocopherol acetate (alpha-TOH-Ac), and an antioxidant compound, butylated hydroxytoluene (BHT) used to prevent TOH autoxidation, was optimized. The CEC experiments were carried out in a 75 microm inner diameter (ID) fused-silica capillary, partially packed with 3 microm C(18 )stationary phase (33 cm total length, 8.4 cm and 7 cm effective and packed lengths, respectively). The optimum mobile phase was a polar organic phase composed of a mixture of methanol-acetonitrile in the ratio 50/50 v/v containing 0.01% ammonium acetate, applying a voltage and temperature set at -25 kV and 20 degrees C, respectively. The tocopherols and the BHT were successfully separated within 2.5 min using the short-end injection method. Under these experimental conditions, repeatability of retention time and peak area, analyte detection and quantitation limits, linearity, precision, and accuracy were studied. The CEC method was applied to determine the content of TOHs in different commercially available oils of virgin olive, hazelnut, sunflower, and soybean. The extraction of vitamin E isomers from oil samples was achieved using methanol and a methanol-isopropanol mixture.

Publication: Electrophoresis 2005 Feb ;26(4-5)::798-803.
Publication Date: 2005 Feb
Study Author(s): Aturki, Zeineb;D'Orazio, Giovanni;Fanali, Salvatore;
Institution: Istituto di Metodologie Chimiche, CNR, Area della Ricerca di Roma 1, Monterotondo Scalo, Rome, Italy. [email protected]
Shortcut link to this study:
A rapid capillary electrochromatographic (CEC) method for the analysis of vitamin E in vegetable oils is reported. Vitamin E consists of a group of eight isomers, tocopherols (TOHs) and tocotrienols. The separation of four TOHs (alpha-, gamma-, delta-TOH), alpha-tocopherol acetate (alpha-TOH-Ac), and an antioxidant compound, butylated hydroxytoluene (BHT) used to prevent TOH autoxidation, was optimized. The CEC experiments were carried out in a 75 microm inner diameter (ID) fused-silica capillary, partially packed with 3 microm C(18 )stationary phase (33 cm total length, 8.4 cm and 7 cm effective and packed lengths, respectively). The optimum mobile phase was a polar organic phase composed of a mixture of methanol-acetonitrile in the ratio 50/50 v/v containing 0.01% ammonium acetate, applying a voltage and temperature set at -25 kV and 20 degrees C, respectively. The tocopherols and the BHT were successfully separated within 2.5 min using the short-end injection method. Under these experimental conditions, repeatability of retention time and peak area, analyte detection and quantitation limits, linearity, precision, and accuracy were studied. The CEC method was applied to determine the content of TOHs in different commercially available oils of virgin olive, hazelnut, sunflower, and soybean. The extraction of vitamin E isomers from oil samples was achieved using methanol and a methanol-isopropanol mixture.
PMID: 15669010

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